FLT#453, BOS-PLS. "MAGIC MARKER SMELL ON DECENT THROUGH FL230. ON GROUND WITH APU SELECTED, SMELL PERSISTED AND NOTICED BY ALL CREW MEMBERS." (SUPPLEMENTAL INFORMATION TO FOLLOW)

FLT#421, JFK-NAS. FUME EVENT UPON LANDING IN NAS VERY STRONG ODOR FILLED THE COCKPIT AFTER CLEARING THE RUNWAY. THE ODOR WAS TAILD BUT NOTICED IN THE AFT OF THE AIRCRAFT. OPEN.

SMOKE ODOR IN COCKPIT & CABIN DURING CRUISE AT FLT LEVEL 220. OPS BOTH PACKS WITH NO FAULTS. FOUND BOTH MUFFLERS TO HAVE TEARS & EVIDENCE OF BURNS. R & R BOTH RECIRC MUFFLERS. PERFORMED OPS CHECK OF PACK SYS. FAULT PERSISTS, RAN PACK 1 & 2 ON BOTH APU & ENGS INDIVIDUALLY. ODOR IS PRESENT WITH ONLY APU BLEED SELECTED. PERFORMED GVI OF PACK SYS 1 & 2. NO DEFECTS NOTED. REMOVED AND REINSTALLED CROSS BLEED VALVE FOR GVI. NO DEFECTS NOTED. FOUND APU LEAKING & CONSUMING OIL. PERFOR

DURING TAKE-OFF AROUND 600' DURING GEAR RETRACTION WE GOT A HYDRAULIC/ELECTRICAL ODOR IN THE CABIN. AROUND 1500' THE ODOR CONTINUED TO GET STRONGER. LEVELED OFF AT 4000' STARTED A RETURN BACK INTO KDAL. THE ODOR STARTED TO DISSIPATE A LITTLE, THE FLIGHT ATTENDANT NOTICED THE ODOR IMMEDIATELY AFTER TAKE-OFF. ON THE APPROACH BACK INTO KDAL LOWERING THE LANDING GEAR CAUSED THE SMELL TO COME BACK. ONCE WE LANDED WE CHECKED THE ELECTRICAL AND HYDRAULIC SYNATIC PAGES. THE ELECTRICA

HEAVY MUSK STENCH WITH PACS ON. DIFFICULT TO BREATH DUE TO STRONG ODOR. PERFORM CONDITIONAL INSPECTION AMM 05-51-58-800-801-C3. RAN BOTH PACKS AND OPENED & INSPECTED BOTH PACK COMPARTMENTS WITH NO DISCREPANCIES. OPENED & INSPECTED ELECTRONICS BAY WITH NO DISCREPANCIES. STRONGEST ODOR IN THE FLT DECK. UNABLE TO DETERMINE SOURCE AT THIS TIME. APU R & R. THERE IS NO LONGER SMOKE OR ODOR IN CABIN OR FLIGHT DECK.

DURING CRUISE FL370 FLIGHT ATTENDANT REPORTED ODOR IN AFT CABIN AND FAINTLY IN FOWARD FWD CABIN.REFERRED TO ODOR CHKLIST. PACK 2 SUSPECTED AND TURNED OFF. 5 MINS LATER F/A CONFIRM ODOR HAD DISSIPATED-PERFORMED TSM 05-50-00-810-831-A, ACCOMPLISHED LEVEL A DECONTAMINATION OF THE ENVIROMENTAL CONTROL SYSTEM IAW AMM 21-00-00-615-802-A, REMOVED AND REPLACED RECIRCULATION FILTER AS PRECATUION IAW AMM 21-21-41.

JUST AFTER TAKEOFF DURING INITIAL CLIMB, CREW NOTICED BLUE SMOKE IN COCKPIT COMING FROM LEFT SIDE. CREW DONNED MASKS/GOGGLES AND STARTED IMMEDIATE RETURN TO AIRPORT, AFTER POWER REDUCED SMOKE STOPPED. CHECKLIST FOLLOWED, UNSCHEDULED LANDING PERFORMED AND LANDED WITHOUT INCIDENT. MAINTENANCE EVALUATION FOUND EVIDENCE OF APU LEAKING COMPRESSOR SEAL AS EVIDENCED BY THE OIL/SOOT/COKING ON THE COMPRESSOR BLADES. APU PLACED ON MEL AND SCHEDULED FOR COMPRESSOR CARBON SEAL REPLACEMEN

DIRTY SOCK/OIL ODOR IN FLT DECK AFTER GEARDOWN ON FINAL APPROACH. PERFORM AMM 05-50-00-810-831-A IDENTIFICATION OF THE CAUSE FOR CABIN ODOR, SMOKE OR FUME, AND TSM TASK 71-00-00-810-801-A SMOKE AND/OR OIL SMELL IN THE CABIN DUE TO AN ENGINE LEAKAGE. ACCOMPLISHED TSM 05-50-00-810-831-A, FOUND THROTTLE VALVE LEAKING HYD FLUID. ACCOMPLISHED TSM 71-00-00-810-801-A ON ENG 1 & 2 WITH NO DIRTY SOCK/ OIL SMELL AT VARIOUS POWER SETTINGS WITH ENGINES SUPPLING RESPECTIVE BLEEDS. NO ODOR

(AIRCRAFT NOT GROUNDED) ODOR REPORTED BY CABIN ON DECENT TO LANDING. PERFORMED LEVEL 1 DECONTAMINATION PER TASK CARD A32X-21-000-001 WITH ENGS ONLY. PERFORMED LEVEL A DECONTAMINATION OF ECS IAW AMM 21-00-00-615-802-A. NO ODOR NOTED. WHILE PERFORMING TC 05-000-011, APU FOUND TO BE LEAKING IN INLET. IAW TSR-1848 APU LUBE MODULE REQUIRES REPLACEMENT. REMOVED APU LUBE MODULE REF AMM 49-91-45-000-003-A. INSTALLED NEW APU LUBE MODULE IAW AMM 49-91-45-400-003-A AND REINSTALLED FCU I

VERY STRONG CHEMICAL BURNING LIKE SMELL INTERMITTENT IN FLIGHT DECK AND CABIN. NO VISIBLE SMOKE OR OTHER ABNORMAL INDICATIONS. STRONGEST DURING T/O AND 2 TIMES IN CRUISE FLT / T/S PER FIM 21-21-00-810-806-A01/ FIM 21-22-00-810-806-A01, PERFORMED CLEANING OF BOTH ENGINES FOR PERFORMANCE RECOVERY IAW AMM 72-00-00-100-801-A01 SECTION 4 G FROM ITEM 4 THOUGH 19 . NO FUMES OR /AND SMELL ARE NO LONGER PRESENT.

3/4 FA REPORTED BURNING OIL SMELL AROUND ROW 7 LAST HALF OF FLIG HT FLIGHT ATTENDANTS FILLED OUT ODOR IN PLANE FORM 46-6020. INBOUND CREW DID NOT REPORT ODOR. ONCOMING O/B CREW CREATED LOG. ONE F/A REPORTED NOT SMELLING ANYTHING AND THAT AN INBOUND PILOT ALSO DIDNT CONFIRM SMELL AT LOCATION REPORTED. FOLLOWED CONDITIONAL INSPECTION REF AMM TASK 05-51-26-800-801-C1. REQUESTED ENGINE RUNS ALONG WITH CONDITIONAL INSPECTION. ALL AND INSPECTION REQUIREMENTS COMPLIED WITH. COULD NO

PAX AND FA AS WELL AS A OFF LINE PILOT REPORTED VERY STRONG SMELL COMING FROM THE CABIN THAT BEGAN AS WE TOOK OFF FROM ORD AND WAS INTERMITTENT THROUGH OUT DESCENT MOST PEOPLE INCLUDING OFF LINE PILOT DESCRIBED IT AS A HOUSEHOLD HEATER THAT HAS NOT BEEN USED UNTIL WINTER. "TRANSFERRED TO NRWC 786-CLE-02041" POWERED APU, PACKS, LIGHTS, CHECKED CB, NO SMELL OR SMOKE PRESENT. GRND RAN AT IDLE APROX 10 MIN, CHECKED GALLEY, LAVS, CABIN AREA FOR ODOR OR SMOKE. NONE PRESENT. HIGH PO

FLIGHT ATTENDANT REPORTED WET TOWEL SMELL FEW MINUTES BEFORE GEAR EXTENSION THROUGH TAXIN AFTER LANDING. ON GROUND AFT FA REPORTED SMELL WENT AWAY ON TAXI IN BUT FWD FLIGHT ATTENDANT SAID SMELL PERSISTED. NO SMELL NOTED BY CA/FO NR 2 PACK TURNED OFF FOR TAXI IN. CONTINUED ON LOG PAGE 3586835. DESCRIPTION OF ODOR/FUMES: PERSISTENT, MUSTY DRY SMELL. APPARENT CABIN SOURCE: UNKNOWN. FWD CABIN, MID CABIN, AND AFT CABIN. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED-FOR CORR

FLT#123, JFK-LAX. AFTER PARKING TOW INFLIGHT CREW MEMBERS REPORTED DIRTY SOCK SMELL IN THE AFT GALLEY FROM DESCENT THROUGH 10,000 UNTIL TOUCHDOWN. APU WAS OFF. ENTERED A CLOUD LAYER AT ABOUT 5,000' TILL 400' , SMELL INTENSITY REPORTED AS MILD. ONE FWD FA ALSO REPORTED THE MILD SMELL AT 2,500; PER CAQE REPORT, APU IS THE PROBLEM CAUSE OF THE SOURCE. INSPECTED APU, APU COMPARTMENT NO OIL LEAKS FOUND/NOTED. INSPECTED BOTH M/L/G WHEEL WELLS AND BELLY AREA UP TO APU INLET. NO EVID

ATB/FUME - RETURNED TO JFK DUE TO ODOR IN CABIN. P-TRAK SNIFFER RESULTS INDICATE APU AS SOURCE OF THE ODOR. COMPLETED LEVEL B ECS DECONTAMINATION. DEFERRED APU PER MEL 49-10-01A. LATER, COMPLIED WITH CLEAN APU AIR INTAKE AND COMPARTMENT PER WORK CAR 4916-2001. NO LEAK FOUND, PERFORMED P-TRACK TEST, NO ABNORMAL ODORS. (LP 7360328, 7360336)

CREW REPORTED FLIGHT ATTENDANTS EXPERIENCEED FUMES IN THE CABIN. ACCOMPLISHED FIM TASK 21-00 TASK 830. OPERATED ALL REQUIRED SYSTEMS, RAN BOTH ENGINES AND OPERATED PACKS. RAN APU AND OPERATED PACK. NO FUMES OR SMELLS NOTED. AIRCRAFT OK FOR SERVICE.

SMOKE/FUMES COMING FROM 1C OVERHEAD BIN (AIRCRAFT IS IN SBM) (CLIMB PASSING THRU 220, NO MEDICAL ATTENTION REQUIRED). DEFERRED BALLAST AT 1CD IAW MEL 33-21-01A CAT C OCN 70095855

AIRCRAFT WAS GROUNDED: FUME SMELL FORWARD AND AFT CABIN ABOUT 40 MINUTES INTO FLIGHT ON DESCENT. MAINTENANCE REPLACED THE APU GEARBOX VENT LINE DUE TO EVIDENCE OF COKING ((AALA202511117382) AND REPLACED THE APU GEARBOX AIR OIL SEPARATOR (AALA202511117922) PER TASK CARD 26L00021002. A DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM PER TASK CARD 26L00021014 WAS ACCOMPLISHED WITH NO LEAKS OR ODORS NOTED.

SUSPECTED FUME EVENT IN CRUISE W/ ANTI-ICE ON, TURNED OFF AND PACK 1 SMELL DISSIPATED, CYCLED PACK AND SMELL CAME BACK. LEFT PACK OFF REST OF FLIGHT. DESCRIPTION OF ODOR/FUMES: TEMPORARY, DIRTY SOCKS/ ACRID/ PUNGENT/ IRRITATING/ BURNING EYE SMELL. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. FLIGHT DECK. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-PERFORMED IDENT. OF CAUSE OF CABIN ODOR IAW TSM 05-50-00-810-831-A. T/S INFORMATION DETERMINED TYPE 5 (PACK 1), ACCOMP

AIRCRAFT WAS NOT GROUNDED: FLIGHT ATTENDANT NOTICED A PLASTIC SMELL IN FORWARD GALLEY. ACCOMPLISHE JOB CARD 09L00021001, FOUND NUMBER 2 OVEN IN FORWARD GALLEY TO BE THE SOURCE OF ODOR. REMOVED AND REPLACED NUMBER 2 OVEN. PER AMM 25-32-03.

STRONG FISH ODOR SMELLED IN FRONT OF AIRCRAFT DURING BOARDING. NOW BELIEVED IN DUCTING. RAN PACKS DETECT NO ODOR IN CABIN, OK CONTINUE OF SERVICE.

AFTER PARKING AT THE GATE LEAD FA REPORTED AIR QUALITY EVENT PRIOR TO LANDING ROW 28. DESCRIPTION OF ODOR/FUMES: TEMPORARY, FUEL SMELL. APPARENT CABIN SOURCE: UNKNOWN. AFT CABIN. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-PERFORMED TYPE 1 LEVEL A INSPECTION AND DECONTAMINATION PROCEDURES PER TSM 05-50-00-810-831-A, NO FUMES NOTED. SEE LOGPAGE 3599165-2 FOR WORK CONINUATION.

ON TAKEOFF COCKPIT HAD DIRTY SOCK SMELL BUT MASKED BY TYPE I FLUID THAT HAD JUST BEEN APPLIED. NO SMELL ANYWHERE ELSE. SMELL RETURNED WITH THRUST REVERSE APPLICATION. DISSIAPATED WITH APU USE. INSPECTED BOTH ENG INLETS , PACK INLETS AND APU INLETS NO EVIDENCE OF FOD NOTED. FOUND OIL INSIDE NR 1 ENG SPINNER. C/W WC 0550-2001 DURING RT ENG ISOLATION IMMEDIATELY FOUND STRONG ODOR. NO ODOR WITH LT ENG OR APU ISOLATED. C/W WC 0550-6001 FWD RT ENGINE BLEED TO MEL 36-12-00A AND PLAC

WE TURNED THE BATTERY MASTER ON TO TEST A LANDING LIGHT THAT WAS REPORTED TO BE OUT. AFTER ABOUT ONE MINUTE OF THE BATTERY MASTER BEING ON, LARGE AMOUNTS OF SMOKE CAME FROM THE LEFT ENGINE. TROUBLESHOOTING FOUND THAT THE ALTERNATOR OUTPUT WIRE WAS SHIELDED AND VERY OLD. IT HAD DETERIORATED TO THE POINT WHERE THE POWER FROM THE BATTERY SHORTED TO THE SHIELD OF THE WIRE ROUGHLY ONE MINUTE AFTER POWER WAS APPLIED TO THE AIRCRAFT. THE SHORT CAUSED THE WIRE TO ALMOST COMPLETELY BU

SUSPECTED AIR QUALITY/ FUME EVENT PACK 2. DESCRIPTION OF ODOR/FUMES: PERSISTENT, UNFAMILIAR CHEMICAL SMELL DURING CRUISE. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-ACCOMPLISHED LEVEL A DECONTAMINATION IAW AMM 21-00-00. NO ODORS DETECTED. A/C OK FOR SERVICE.

DURING THE CLIMB, THE CREW NOTICED A SMOKE SMELL, FOLLOWED BY VISIBLE SMOKE IN THE COCKPIT AND AN OVERTEMPERATURE INDICATION AT THE AIR CONDITIONING SYSTEM OUTLET (PACK OUTLET). THE CREW THEN DECIDED TO RETURN TO KIN AIRPORT IN JAMAICA. THE AIR CYCLE MACHINE (ACM) OF PACK 1 WAS FOUND SEIZED. PACK 1 WAS DEFERRED UNDER MEL 21-52-01 (1), AND THE AIRCRAFT THEN FLEW TO BOG STATION, WHERE THE PACK 1 ACM WAS REPLACED.

FOWL SMELL ON CLIMB & CRUISE. SEEMED LIKE WAS EVERYTIME WENT THRU IMC CONDITIONS. CAPT STATED ODOR WAS INTERMITTENT & OCCURS WHEN FLYING THROUGH MOISTURE OR CLOUDS. ODOR WAS PRESENT WITH ANTI ICE ON OR OFF. ISOLATED APU & APU BLEED WITH PACKS ON, OFF & INDIVIDUAL OPS, NO ODOR. RAN NR 2 ENG NO ODOR DETECTED. RAN NR 1 ENG NO ODOR DETECTED. PERFORMED HIGH POWER RUN ON BOTH ENGINES. HAD A VERY FAINT ODOR WITH NR 1 ENG RUNNING. OPENED ENGINE, GVI OF ENGINE, NO SIGNS OF OIL LEAK. B

F/A SMELLED ELECTRICAL ODOR DURING DESCENT, AND AFTER LANDING NEAR L1 DOOR. RAN PACKS WITH APU, DID NOT SMELL ANYTHING. PILOT REPORTED NO ABNORMALTIES AND NO FAULTS FOUND IN HISTORY.

FA REPORTED LIKE FUME SMELL IN THE BACK. DESCRIPTION OF ODOR/FUMES: TEMPORARY, DIRTY SOCKS SMELL DURING DESCENT. APPARENT CABIN SOURCE: UNKNOWN. AFT CABIN/GALLEY(LAV). NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-PER TSM 05-50-00-810-831-A, PERFORMED GVI OF APU PER AMM 49-00-00-200-812. FOUND NO DEFECTS & NO LEAKS. APU OIL LEVEL WITHIN LIMITS. PERFORMED GVI OF ENG #1 & ENG #2 PER AMM 71-00-00-810-847-A. FOUND NO LEAKS. FOUND ENG #1 & ENG #2 OVERSERVICED. REMOVED 3 QT

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO CLT DUE TO THE FLIGHT CREW REPORTING THAT DURING CRUISE THE FLIGHT ATTENDANTS REPORTED DIRTY SOCK SMELL BETWEEN ROWS 13 AND 23. IT WAS STRONG ENOUGH TO MAKE THE FLIGHT ATTENDANT SICK. SHORTLY THERE AFTER THE SMELL MOVED AFT. ON APPROACH STARTED TO GET THE SMELL IN THE FRONT OF THE AIRCRAFT. THE AIRCRAFT LANDED SAFELY AT CLT AND TAXIED TO THE GATE UNDER ITS OWN POWER, MAINTENANCE ACCOMPLISHED SMOKE /

POSSIBLE AIR QUALITY EVENT EXPERIENCED ON DOWNWIND LEG. OCCURED AFTER FILLING THROUGH A CLOUD. DETECTED ALL THROUGH THE CABIN AND FLIGHT DECK--

DIV TO DTW DUE TO DIRTY SOCK SMELL ON TAKEOFF THAT DISSIPATED. CORRECTIVE ACTION: T/S PER WORKCARDS FOUND SOURCE OF ODOR COMING FROM RIGHT ENGINE. C/W AMDS WC 0550-6001 AND 0550-2003. ODOR DOES NOT PERSIST. (LP# 7675577, 1288692)

AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED THEY RECEIVED ECAM WARNING SMOKE LAVATORY SMOKE AT CRUISE ALTITUDE. FLIGHT ATTENDANTS REPORTED NO EVIDENCE OF PASSENGER SMOKING/VAPING NOR SMOKE IN WASTE BINS IN ANY LAVATORY. MAINTENANCE RESET SMOKE DETECTION SYSTEM AND ACCOMPLISHED BITE TEST PER AMM 26-17-00 WITH NO FAULTS OR ISSUES NOTED.

ON TAXI IN, STARTED APU, TURNED ON APU AIR. SMELLED SMOKE, TURNED OFF APU AIR AND APU. TURNED OFF RECIRCULATION FAN ODOR CLEARED. SMOKE ODOR IN ENTIRE CABIN, FWD AND AFT. C/W INSPECTION 05-51-56-0200-801 COULD NOT DUPLICATE. REPLACED COALESCER BAGS NR 1 & 2, PACKS IAW AMM 21-51-05. OPS CHECK GOOD.

AIRCRAFT WAS GROUNDED: WHEN POWER LEVERS WERE AT IDLE FOR A FEW MOMENTS ON ARRIVAL APPROXIMATELY 5 MINS FROM LANDING A PUNGENT DIRTY SOCK SMELL IN THECOCKPIT MUCH MORE THAN USUAL. LINGERED FOR A WHILE. APU WAS OFF.F/A'S DID NOT SMELL THE ODOR IN THE CABIN. MAINTENANCE FOUND APU SOURCE OF THE ODOR WITH LEAKS IN LOAD COMPRESSOR AND REPLACED APU.

JET FUEL ODOR IN AFT GALLEY AREA DURING TAKEOFF AND LANDING. PERFORMED APU DRAIN MAST INSPECTION IN REF AMM 49-16-11. NO FUEL LEAK DETECTED PERFORMED SMOKE OR FUMES IN CABIN CONDITIONAL INSPECTION IN REF AMM 05-51-56. NO FUEL FUMES DETECTED IN CABIN. ENGINE RUN.

NOTICED UNPLEASANT ODOR ON TAXI IN AFTER APU START AND OBSERVED LEAKING DARK FLUID UNDERNEATH APU COMPARTMENT ON SUBSEQUENT WALK AROUND. APU OIL CAP NOT PROPERLY SEATED AND APU AND COMPARTMENT AND AFT FUSELAGE COVERED WITH OIL. THE APU OIL CAP WAS PROPERLY SEVURED AND APU AND EXTERNAL AFT FUSELAGE WAS CLEANED. R/R COALESCER BAGS PER B717 AMM 21-54. CLEANED OUT AND BURNED OUT PNEUMATIC DUCTING. (7978044)

F/A REPORTED STRONG FUMES IN CABIN ON TAXI OUT. TRIED ALL COMBINATION OF PACKS, BLEED AIR M & L IAW AMM 05-51-58-910-801-C1, PERFORMED CONDITIONAL INSPECTION, FOUND NO DEFECTS. SUSPECT INJESTION OF ENGINE EXHAUST DUE TO HIGH WINDS. ITEM HAS NO REPORTED HISTORY OF FUMES IN CABIN.

AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANT REPORT BURNING SMELL IN AFT GALLEY. TROUBLESHOT AND FOUND AFT GALLEY UPPER COFFEE MAKER LEAKING ON HEATING PAD. REMOVE AND REPLACED AFT GALLEY UPPER COFFEE MAKER. PER AMM 25-32-00. GROUND OPERATIONAL CHECK GOOD ATTHIS TIME.

AIRCRAFT WAS NOT GROUNDED: LEFT AFT LAVATORY SMOKE DETECTION WARNING IN FLIGHT WITH NO ONE IN THE LAVATORY. MAINTENANCE ACCOMPLISHED FIM 26-17-00-810 SYSTEMS AND LAVATORY D SMOKE TEST WITH NO FAULTS NOTED.

DUE TO SMOKE FILLED CABIN ODI EVENT, MECHANICS RECOMENDED A COMP WASH DURING THE BORROSCOPE PROCEDURE. (FLIGHT 6512) TROUBLESHOT WRITE UP FOR CABIN SMOKE AND OR ELECTRICAL BURNING ODOR IAW FIM 21-21-00-810-806, FIM 21-22-00-810-806 AND FIM 79-30-00-810-821. FOUND NO SIGNS OF SMOKE OR ABNORMAL ODORS WHILE RUNNING ENGS & APU AT MULTIPLE POWER SETTINGS INCLUDING HIGH POWER SETTINGS WITH PACKS AT FULL COLD & FULL HOT. OPS CHECKED GOOD. ACFT OKAY FOR RETURN TO SERVICE. CONFIRMED W

AFT FLIGHT ATTENDANT REPORTED FUMES AND A ELECTRICAL SMELL IN THE CABIN. PASSENGERS WERE COMPLAINING ABOUT THEIR EYES BURNING. THE CAPTAIN MADE THE DECISION TO RETURN TO FIELD. THEY DECLARED AN EMERGENCY WITH ATC. FIRETRUCKS MET THE AIRCRAFT ON THE ARRIVAL BACK IN BUT WERE NOT NEEDED. THERE WAS ALSO NO INJURIES TO PASSENGERS OR CREW MEMBERS. / REMOVED AND REPLACED LH ACM IAW CRJ 900 AMM 21-51-08-000/400-801-A01. OPS CHECKS GOOD. LEAK CHECK GOOD. NO MORE SMELL OF EYE BURNING N

FLIGHT 393 HVN-ATL. OCT. 31, 2025. RIGHT PACK OVERHEAT THEN TRIP OFF AND SMOKE ODOR IN THE FLIGHT DECK AND CABIN. AIR RETURN TO BDL.

(AIRCRAFT NOT GROUNDED) MUSTY DIRTY SOCK SMELL-DURING CLIMB OUT JUST AFTER STERILE COCKPIT SIGNAL (10,000FT) FA 1 CALLED AND REPORTED MUSTY DIRTY SOCK SMELL IN AFT GALLEY AREA.SMELL INITALLY WAS MODRATLY STRONG DISIPATING TO ZERO SMELL WITH IN 10-15 MINUTES / C/W TC 21-000-002. (RESOLVED ON W/O: 536215 TASKCARD: NR-00001 ) C/W TC # 21-000-003, OIL TYPE SMELL PHASE 3.

DURING DESCENT BELOW 10000FT FAS REPORTED A STRONG DIRTY SOCK SMELL. DESCRIPTION OF ODOR/FUMES: CONTINOUS AND DISCOMFORTABLE, DIRTY SOCKS/ ACRID/ PUNGENT/ IRRITATING/ BURNING EYE SMELL. SOURCE: CABIN AIR SUPPLY VENTS. FWD CABIN AND MID CABIN. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-REF TSM 05-50-00-810-831-A APU VERIFIED NO LEAKS , ISOLATED PACK 1 AND PACK 2 , PERFORMED DECONTAMINATION , PACK BURN OUT IAW AMM 21-00-00 & R+R RECIRCULATION FILTERS IAW AMM 21-21-41

SUSPECTED BIRDSTRIKE DURING CLMB AROUND 800 FT. SMALL BIRD LEFT ENGINE. BRIEF ODOR, ON CLIMB NOTICED SMALL BIRD PASS ON LT SIDE OF ACFT, A BURNT ODOR WAS NOTICED BY CA/FO WHICH WAS ALSO REPORTED BY FA, NO ADVERSE ENGINE PARAMETERS NOTICED. PERFORMED BIRD STRIKE CONDITIONAL INSPECTION IAW 05-51-18-210-801, NO ISSUES NOTED, NO EVIDENSE OF BIRD INGESTION NOTED INTO E1/E2 INLET/CORE AREA,

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: FLIGHT ATTENDANTS IN THE AFT CABIN REPORTED A STRONG BURNING SMELL OF A BURNING ELECTRICAL CABLE JUST AFTER TAKEOFF. THIS WAS ALSO REPORTED BY PASSENGERS IN THE LAST 6 ROWS OF THE CABIN. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT CLT. ACCOMPLISHED J/C 08L00021001. COULD NOT DUPLICATE SMELL.

AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED A SMOKE LAVATORY SMOKE ECAM MESSAGE DISPLAYED FOR LESS THAN TWO SECONDS. FLIGHT ATTENDANTS REPORTED THEY DID NOT GET AN INDICATION. MAINTENANCE ACCOMPLISHED RESET PROCEDURE PER TSM 24-00-810-818A.

AIRCRAFT 5091, WHILE CLIMBING THROUGH FL 280- FL 300, FLIGHT ATTENDAT REPORTED "ROTTON EGG" SMELL DURING CLIMBOUT. CYCLING FROM PRESENT TO NOT PERSENT EVERY FEW MINUTES. EQRH STEPS TAKEN TO ISOLATE ODOR COMING FROM PACK 1. PACK 1 TURNED OFF FOR REMAINDER OF FLT. NO ODOR PRESENT. CORRECTIVE ACTION: T/S SOURCE OF ODOR TO NO.1 ENG OVERSERVICED. RAN NO. 1 ENGINE AND DRAINED TO PROPER LEVEL. REF AMDS 0550-2002 AND A321 AMM 21-00-00-615-803-A. (LP 7190572, 1278749)

SMOKE SEEN & BURNT ELECTRICAL ODOR IN FWD GALLEY IN CRUISE. COMPLETED SMOKE, FIRE, OR FUMES CHECKLIST 8.6 IN QRH. SMOKE & FUME ODOR DISSAPATED. PERFORMED OPS TEST OF FWD DOOR AREA HEATER IAW AMM 21-45. GOT AN ODOR FROM DOOR HEATER OUTLET. SUSPECT FWD DOOR AREA HEATER. FOUND FWD DOOR HEATER BURNED FWD TO MEL 21-00- 41A (M) PROCEDURES. C/W DEACTIVATED FWD ENTRY DOOR C/B PLACARD INSTALLED, (LP: 5768603)

AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED A SMOKE LAVATORY SMOKE ECAM DISPLAYED FOR 3 SECONDS WHICH CLEARED ITSELF. FLIGHT CREW REPORTED THAT NO SMOKE WAS NOTED. MAINTENANCE PERFORMED OPERARIONAL CHECK OF LAVATORY SMOKE DETECTION PER AMM 26-17-00 WITH NO FAULTS NOTED.

AIRCRAFT WAS GROUNDED: DIRTY SOCK SMELL ON CLIMB OUT AND LANDING IN THE CABIN AND COCKPIT. (OPEN).

AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED THAT THE APU DISCHARGE SWITCH LIGHT WAS ON IN FLIGHT. NO RELATED ECAM MESSAGES WERE NOTED. MAINTENANCE PERFORMED OPERATIONAL TEST OF THE APU FIRE EXTINGUISHING LOOP/SQUIB PER AMM 26-22-00 AND NO ISSUES WERE NOTED. MAINTENANCE REPORTED THAT THERE WAS NO DISCHARGE LIGHT ILLUMINATED PRIOR OR AFTER OPERATIONAL TEST.

AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANTS REPORT DIRTY FEET SMELL ON DECENT. A FAINT ODOR WAS NOTED IN THE FLIGHT DECK. MAINTENANCE ACCOMPLISHED SMOKE / ODOR / FUME APU TROUBLESHOOTING TASK CARD 26L00021002 AND ACCOMPLISHED A DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM PER TASK CARD 26L00021014. A SATISFACTORY LEAK / OPERATIONAL CHECK WITH NO ISSUES OR ODORS NOTED.

FLT#2169, BOS-FLL. ON TAKEOFF & DURING DECENT MUSTY ODOR IN COCKPIT THROUGH GASPERS. ACCOMPLISHED BD50-A-J21-22-00-04AAA-423-A. APU INSPECTIONS & APU ENGINE RUNS ACCOMPLISHED. NO LEAKS OR ODOR PRESENT. ACCOMPLISHED LT & RT ENG VISUAL INSPECTIONS & ENG RUNS. NO LEAKS OR ODOR PRESENT. PER STEP #30 NO FAULTS FOUND ACFT OK FOR SERVICE. TO BE MONITORED NEXT (3) FLIGHTS.

AIRCRAFT WAS GROUNDED DUE TO THIS EVENT. ODOR EVENT WITH A STALE OR MUSTY ODOR THROUGHOUT THE PLANE, BUT MOSTLY TOWARD THE AFT. FOUND APU LUBE MODULE LEAKING FROM BASE, REMOVED AND REPLACED LUBE MODULE IAW AMM 49-91-45-000/400-003-A. LEAKS CHECK GOOD. RAN APU BLEED WITH PACKS ON, NO SMELL NOTED. COMPRESSOR WASH REQUIRED. NO LEAKS AT THIS TIME. APU PLACED ON MEL 49-10-01A. AIRCRAFT RETURNED TO SERVICE.

FOUL ODOR FROM VCS SYSTEM THROUGHOUT CABIN, GOES AWAY IN FLIGHT. CLEANED FWD AND AFT EVAPORATOR MODULES. OPS CHECK GOOD. IAW AMM CH1 52-03-160-801A

AIRCRAFT 5008, FLIGHT ATTENDANTS FROM FWD AND AFT GALLEYS REPORTED A DIRTY SOCK ODOR JUST PRIOR TO LANDING THAT DISSIPATED AFTER A FEW MINS. NO ODOR DETECTED IN THE FLIGHT DECK. CORRECTIVE ACTION: FOUND OIL BEHIND #1 AND #2 ENGINE SPINNER. REPLACED #1 AND #2 ENGINE FAN SHAFT COVER SEALS IAW A321 AMM 72-15 NO LEAKS NOTED. DECONTAMINATION BLEED DUCT OF ECS PER A321 AMM 21-00-00-615-803-A. (LP 7930156, 1272004)

FLT#8357, PHX-LAX. "ON DEPARTURE FROM FLL AFTER A HEAVY RAIN SHOWER WE EXPERIENCED AN ODOR IN THE A/C THAT WAS SENSED BY BOTH PILOTS AND FWD FAS DISSAPATED ABOUT 20 MINS LATER AND NOT SENSED AGAIN UNTILL INDIE DESCENT INTO PHX YET NOT AS STRONG LEVEL 1 ODOR; REF LOGPAGE 4487530 ITEM 1. FOUND SOURCE OF OIL ODOR TO BE APU, RAN PACKS WITH DECAM PERFORMED. SYSTEM RESPONDS NORMALLY."

FLT#318, JFK-BOS. "FWD GALLEY HEATER ( GALLEY HEATER (GHTR) FWD GALLEY )FA1 REPORTED STRONG CIGARETTE SMOKE SMELL ON SHORT FINAL NEAR ROW 1 NOT OBSERVED IN FLIGHT DECK" (SUPPLEMENTAL INFORMATION TO FOLLOW)

FLT#2321, BOS-PBI. "DESCENDING THROUGH 9,000 AFT FLIGHT ATTENDANT REPORTED HOT PLASTIC ODOR EMITTING FROM AFT GALLEY THE ODOR WAS TRANSIENT. FOLLOWED A320 ODOR RECOGNITION & ISOLATION GUIDANCE FCOM PAGE 4-54 STEPS 1,2,14; COMPLIED WITH INFORMATION NOTICE 2017-T015 SECTION A, ISOLATED FAULT TO TYPE 10 CONTAMINATION (CABIN ITEMS ACCOMPLISHED FULL VISUAL INSPECTION OF COFFEE MAKERS AND GALLEY WIRING NO FAULT FOUND). COULD NOT DUPLICATE TRANSIENT ODOR. LEVEL 1 DECONTAMINATION ACC

AIRCRAFT 5034, ON TAKEOFF TO 3000FT FAINT ACRID ODOR. @33000 FEET 54 MIN INTO FLIGHT STRONG SOCK/ACRID ODOR FOR 2MIN DURING AIRCRAFT SLOWING. ON DESCENT 18000FT -14000FT STRONG ODOR AGAIN. APPEARS TO BE RELATED TO THURST CHANGES. CORRECTIVE ACTION: PERFORMING LEVEL B AND WORKCARD 2100-2005 FOR DUCT BURNOUT. DUCT BURNOUT COMPLETED LEAK CHECKS GOOD. WORK CARD 2100-2005 COMPLETED. REPLACED NBR 1 ENGINE (LP 7203510, 1269350)

ATB/SMOKE- PERFORMED AIR TURN BACK DUE TO CREW REPORTS OF ODOR IN FLIGHT DECK. T/S PER A330 05-50-810-829-A. NO EVIDENCE OF OIL LEAK. NO SMELL OF CONTAMINATION. PERFORMED ENGINE RUN AND LEAK CHECK. (LP# 7972910,1269341,1268168)

MUSTY SMELL FROM A/C PACKS, STARTED DURING T/O ROLL AND CONTINUED DURING CLIMB. SMELL GONE AT CRUISE. PERFORMED ENGINE WASH AT LAST NIGHT STATION. WITH THAT INFO WE CHANGED RECICULATION FILTER AND RAN PACKS, CHECKED OK. MM 21-25-01. FIM 21-00 TASK 806.

FLT#1233, MCO-SJU. "DURING CLIMB AND CRUISE INFLIGHT CREW REPORTED STRONG ODOR/SMELL OF STINKY CHEESE/DIRTY SOCKS . REPORT FROM FWD GALLEY TO ROW 4. MODERATE INTENSITY LEVEL2. FOM POLICY COMPLIED WITH AND CALLS TO DISPATCH AND MX. IRRITATING NOSE SMELLS; ACCOMPLISHED INFORMATION NOTICE 2017-T015L, SECTION B2. IDENTIFIED ODOR LEVEL 2 COMING FROM APU. DECONTAMONATION LEVEL B WAS ACCOMPLISHED PER TSM 05-50-00-810-831A. AIRCRAFT IS OK FOR SVC. R/R RECIRCULATION FILTERS REF AMM 21

(AIRCRAFT NOT GROUNDED) CHEMICAL / DIRTY SOCK ODOR REPORTED ROWS 23 TO AFT GALLEY. COMPLIED WITH QRH. ODOR DISSIPATED WITH PACK 2 OFF BUT RETURNED DURING DESCENT THEN DISSIPATED AGAIN. SMOKE / ODER REPORT COMPLETED / PERFORMED LEVEL 2 IAW TASK CARD 21-000-002. CHECKS GOOD. THIS CLEARS M313 MDDR 221413. PER TC A32X-21-000-002 M313 REQUIRED TO C/W TC A32X-21-000-003 WITHIN 10 CALENDAR DAYS. TASK CARD 21-000-003 C/W M313 CREATED TO COMPLY WITH TASK CARD 05-000-011 BETWEEN 5 AND

ON ROTATION BURNING SMELL IN COCKPIT AND CABIN; SMELL DISSIPATED IN COCKPIT BUT REMAINED IN CABIN ALL ENGINE INDICATIONS NORMAL. SMELL RETURNED IN CABIN ON APPROACH. PER AMM 05-51-56-201-MAX (SMOKE OR FUMES IN CABIN - MAINTENANCE PRACTICES (CONDITIONAL INSPECTION) PERFORMED FIM TASK 21-00-00-810-830. NO FUMES NOTED IN THE CABIN. ENGINE PARAMETERS NORMAL. REMOVED AND REPLACED RT RECRCULATION AIR FILTER IAW AMM 21-25-01.

AIRCRAFT WAS NOT GROUNDED: PASSING THROUGH 10K FT, SMELLED AN OILY MUSTY ODOR, AFTER LANDING & AT THE GATE THE ODOR INTENSIFIED. APU TURNED ON AFTER LANDING & ODOR OF OIL/MUSK INCREASED MORE. AFTER OPENING DOOR, ODOR DISSIPATED, BUT REMAINED AFTER DOOR REMAINED OPEN. CLEANING CREW & GATE AGENT ALSO SMELLED DIRTY OIL/SOCK ODOR AFTER BOARDING. MAINT FOUND APU OIL COOLING FAN WAS LEAKING OIL & REPLACED IT PER AMM 49-52-51. MAINT FOUND APU GEABOX VENT LINE HAD EVIDENCE OF COKING

BURNING SMELL COMING FROM AFT GALLEY. NO SMOKE SEEN BUT FUMES A RE STRONG RAN ALL AFT GALLEY APPLIANCES (COFFEEMAKER, OVENS, WARMERS). RAN APU WITH BOTH PACKS ON HIGH. NO SMELL DETECTED. INSPECTED AFT CARGO PIT AND APU COMPARTMENT. NO SMELL DETECTED. FA'S REPORT ODOR IN AFT GALLEY AFTER AC WAS AT GATE, ENGINE SHUT DOWN AND APU SHUT DOWN. ACCOMPLISHED FIM 21-00 TASK 830 WITH BOTH ENGINE AND APU RUNNING. RAN L AND R PACKS SYSTEM, BLEED AIR SYSTEM, HYD SYSTEMS,AND ALL GALLEY APP

Monday November 10th, 2025 The second incident of the day involved an Iberia Airbus A330-300 (EC-LUX), which was performing flight IB381 from Madrid Barajas Airport to Luis Munoz Marin International Airport in Puerto Rico. It was climbing out of Madrid’s runway 36L when the crew stopped the climb at 5,000 feet after reporting a strong odor of smoke in the cabin. The aircraft returned to Madrid safely, but the flight was subsequently canceled, and the aircraft remains grounded

FLT#1189, JFK-SAN. "MILD PERSISTENT ODOR NOTED, IN CABIN DURING FINAL APPROACH. APPARENT SOURCE WAS AIR CONDITIONING SYSTEM. ODOR PERSISTENT THROUGHOUT CABIIN. ODOR SIMILAR TO DIRTY SOCKS ODOR DISSIPATED AFTER LANDING; PERFORMED IDLE AND HIGH POWER ENG RUN. COULD NOT DUPLICATE ODOR. COMPLIED WITH INFORMATION NOTICE 2017-1015. SECTION A ISOLATED FAULT TO TYPE 10 (MUSTY) PER TSM 05-50-00-810-085-B/TSM 05-50-00-810-085-D. AC OF FOR SERVICE. MCC NOTIFIED."

Wednesday October 15th, 2025 A United Airlines Boeing 767 scheduled to fly from Washington Dulles International Airport (IAD) to Rome Fiumicino Airport (FCO) returned to Washington after a passenger’s laptop dropped through the passenger cabin into the cargo bay. As the laptop had a lithium-ion battery, its unattended presence in the cargo hold represented a credible threat to safety.

DURING ARRIVAL, DESCENDING THROUGH 8000'. BOTH PILOTS NOTICED A DIRTY SOCK SMELL. FLIGHT ATTENDANTS CONFIRMED THE ODOR. BOTH PILOTS DONNED 02 MASKS. AFTER ARRIVAL, APU WAS STARTED AND NO ODOR NOTICED. FOUND NBR 1 ENG SPINNER WET WITH OIL. REPLACED NBR 1 INLET SPINNER BEARING COVER SEAL PER A321 AMM 72-11. NO LEAKS NOTED. (LP 7619980)

REPLACE RECIRC FILTERS DUE TO ODOR EVENT REPLACED RECIRC FILTER IAW AMM 21-25-01. NO DEFECTS NOTED. FA AND PAX SMELLED SOMETHING LIKE BURNING RUBBER APPEARED TO BE STRONGER IN AFT CABIN. DEBRIEFED CREW. CREW STATED INITIALLY SMELLED BURNING RUBBER SMELL IN FLT DECK & THEN AFTER COUPLE MINS IN AFT GALLEY AFTER TAKE-OFF. ENGINE BLEEDS WERE OFF DUE TO MEL. ONLY APU BLEED WAS ON FOR T/O FOR PRESSURIZATION. AFTER TAKE OFF, NO VISIBLE SMOKE WAS NOTED ONLY TASTED RUBBER/FUEL SMELL M

FLIGHT ATTENDANTS REPORT OF FUME (SMELLY SOCKS) AFT FA SMELLED FOR 1 MIN FORWARD FA 3MIN NEITHER PILOT SMELLED ANYTHING ( DID NOT SMELL). DESCRIPTION OF ODOR/FUMES: TEMPORARY, DIRTY SOCKS SMELL DURING DESCENT. APPARENT CABIN SOURCE: UNKNOWN. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-AIRCRAFT TO BE MX FERRIED TI IAH

WET SOCK SMELL IN COCKPIT DURING DESCENT AND LANDING OPS CHECKED ON PNEUMATIC SYSTEM REF AMM 36-00-00. FOUND NO FAULT/ ODOR AT THIS TIME. COULD NOT DUPLICATE FAULT. OK TO SERVICE.

(LOG 7403834) FAIRLY STRONG RAW FUEL ODOR IN THE FLIGHT DECK UPON SHUTDOWN OF #1 ENGINE. FOUND FUEL FLOW TRANSMITTER LEAKING. R/R TRANSMITTER PER B737 AMM 73-31. NO LEAKS OR FUEL SMELL PRESENT.

SHIP 3953 -ATB/FUMES- RETURNED TO ATL DUE TO STRONG ODOR IN COCKPIT. CORRECTIVE ACTION: FOUND LEFT PACK ACM SEIZED. REPLACED SAME. OPS CHECK GOOD.

FUME EVENT ON APPROACH. DIRTY SOCKS SMELL. SOURCE, CABIN AIR SUPPLY VENTS. FWD CABIN/GALLEY(LAV), MID CABIN, AFT CABIN/GALLEY(LAV). NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-UPON TURNING ON AC AND PACKS 2 CONFIMRED SMELL. FOLLOWED TSM 05-50-00-810-831-A PERFORMED LEVEL A DECONTAMINATION IAW AMM 21-0-00-602-802-A AND CHANGED RECIRCULATION FILTER IAW AMM 21-21-41. PERFORMED OPERATIONAL TEST OF BLEED AIR SYSTEM IAW AMM 36-12-00. NO SMEL NOTED AT THIS TIME.

ON TAKEOFF, BURNING LUBRICANT SMELL. WAS NOT DURING TAXI/GROUND IDLE DEBRIEFED CREW. SMELL DISSAPTED SHORTLY AFTER TAKEOFF. FIRST FLIGHT AFTER #1 ENGINE WATER WASH COMPLETED OVERNIGHT. DEBRIEFED CREW. CREW STATED SMELL DISSIPATED VERY SHORTLY AFTER TAKEOFF AND DID NOT RETURN. #1 ENGINE WATER WASH L/P 6226966 COMPLETED PRIOR TO THIS FLIGHT. NO FURTHER MAINTENANCE ACTION NEEDED. NO PRIOR HISTORY.

FA AND PAX SMELLED SOMETHING LIKE BURNING RUBBER APPEARED TO BE STRONGER IN AFT CABIN DEBRIEFED THE CREW. CREW STATED THAT INITIALLY SMELLED BURNING RUBBER SMELL IN FLIGHT DECK AND THEN AFTER COUPLE MINUTES IN THE AFT GALLEY AFTER TAKE-OFF. ENGINE BLEEDS WERE OFF DUE TO MEL. ONLY APU BLEED WAS ON FOR T/O FOR PRESSURIZATION. AFTER TAKE OFF. NO VISIBLE SMOKE WAS NOTED ONLY TASTED RUBER/FUEL SMELL MOSTLY IN AFT GALLEY. WILL REQUIRE CONDITIONAL INSPECTION REF AMM 05-51-26-800-801

DIRTY SOCK SMELL ON DESC ENT CREW STATES SMELL WAS COMING FROM FWD CABIN/FLIGHT DECK...PACK 1 DID INSPECTION OF APU PER AMM TASK 49-00-00-200-812-A NO OIL, FUEL OR HYDRAULIC LEAKS FOUND ON GROUND WITH APU BLEED ON AND BOTH PACKS ON, NOTED AN OIL SMELL IN COCKPIT AND FWD GALLEY AREA. PERFORMED IDLE ENG RUN OF ENGS 1 AND 2 TO ISOLATE WHERE ODOR WAS COMING FROM. WITH ENG 1 BLEED AND LH PACK ONLY, NO SMELL. WITH ENG 2 BLEED AND RH PACK ONLY, NO SMELL. UPON ENG SHUTDOWN WITH APU B

(AIRCRAFT NOT GROUNDED) FAS REPORTED EARTHY & MUSKY SMELL DURING CLIMB IN AFT 4 ROWS AND GALLEY THEN AFTER LANDING DESCRIBED SMELL WORSENED IN DESCENT AND DESCRIBED AS DIRTY SOCK SMELL. CLEANING AND DECONIMATION FO DIRTY SOCK /LOCKER ROOM/MUSTY SMELL REPORT REQUIRE ACCOMPLISHMENT SEE AML 2095735 INITIAL DISCREPANCY. C/W OIL TYPE PHASE 3 TROUBLESHOOTING IAW TASK CARD 21-000-003. NO DEFECTS NOTED AT THIS TIME.

FLT#1552, RSW-HPN. "CABIN ODOR WITNESSED BY INFLIGHT CREW AT CRUISE. DIRTY SOCK PLASTIC BURNING AFT OF ROW 22 STRONGEST AFT GALLEY A.C LEFT; PERFORMED INFO NOTICE 2017-T015L. C/W APU COMPARTMENT INSPECTION NO OIL/FUEL LEAKS NOTED VISUAL OR WITH BLACK LIGHT. APU PREVIOUSLY REPLACED ON 10/10/2025 INSPECTED IFE SYS NO EXPOSED WIRING OR ELECTRICAL BURNS NOTED. PERFORMED ENG RUN UPS CYCLING PACKS AND ISOLATING ENG BLEED/ APU BLEED. NO SMELL NOTED. INSPECTED AFT GALLEY COFFEE MAKER

FLT#734, SFO-BOS. "OIL FUME EVENT RECOGNIZED BY PILOTS, INTERMITTENT THROUGHOUT DESCENT FROM 10,000 FT TO THE GROUND. UNABLE TO ISOLATE/IDENTIFY SOURCE. F/A'S DID NOT RECOGNIZE ODOR; C/W INFO NOTICE 2017-T015 SECTION B2, FOUND SOURCE TO BE APU TYPE 1, FOUND FCU LEAKING, REMOVED AND REPLACED FCU IAW AMM 49-32-11, OPS CHECKS GOOD, PERFORMED ECS LEVEL A DECON IAW AMM 21-00-00-615-B02-A NO ODOR PRESENT AT THIS TIME."

FLIGHT 2273. SULFUR OR SEWAGE SMELL COMING THROUGH CABIN GASPERS. CONFIRMED NO LAV CART IN AREA OF EXTERNAL AIR INTAKES. REMOVED FROM SERVICE. SMELL COMING FROM OUTSIDE SOURCE AFTER SOURCE REMOVED, SMELL DEPARTED. COULD NOT DUPLICATE. RETURNED TO SERVICE. NO PARTS REPLACED.

STRONG SMELL OF SMOKE DURING TAKEOFF IN BURBANK. BECAME VERY PRONOUNCED IN TO THRUST AND THEN DISSIPATED WHEN THRUST WAS REDUCED TO CLIMB. FLIGHT ATTENDANTS NOTICED THE STRONG SMELL OF SMOKE WHEN I CALLED THEM AT 10,000 FT. NO FURTHER ANOMALIES IN FLIGHT. (FLIGHT 3681 - FILED CLOSED) TROUBLESHOT STRONG SMELL OF SMOKE DURING TAKEOFF PER FIM 21-20-00-810-801-A NO FAULT FOUND PREFORMED FURTHER TROUBLESHOOTING PER FIM 21-20-00-810-803-A DURING ENGINE RUNS NOTED AN ABNORMAL SMELL

DURING PREFLIGHT CREW NOTICED FUMES/OILY SMELL WHEN APU BLEED AIR WAS ACTIVATED . SMELL ESPECIALLY STRONG AROUND ROW 26. C/W W/C 0550-2002 CLASSIFED AS TYPE 1 APU LEAK. C/W W/C 4900- 2001 PLACED APU ON MEL REF LOG 7967753 . C/W LEVEL B DECONTAMINATION OF THE ECS AND DUCTS PER A320 AMM 21-00-00 AND AMM 36-10-00 . CONTACTED MCC NO 1261830.NO ODORS PRESENT. OK FOR SVC REF. MDLOG 1261830. (LP: 7967752)

Monday October 20th, 2025 A fire has broken out on an Air China flight, forcing the plane to make an emergency landing, with a lithium battery in a passenger’s carry-on luggage blamed for the incident. The Air China flight CA139 from Hangzhou, China, to Seoul, South Korea , was forced to make an emergency landing in Shanghai when the battery “spontaneously combusted” in the cabin on October 20.

NUMEROUS FUME ISSUES PREVIOUSLY REPORTED BY ATL MAINTENANCE. OIL RESIDUE/BURNING SMELL STRONG ON APPROACH AND TAXI IN FLL. CAME FROM ENG 1. SOURCE UNKNOWN. FLIGHT DECK. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.--

FLT#1498, DEN-JFK. "INFLIGHT REPORTED ELECTRICAL SMOKE SMELL IN AFT LAV AREA; ACCOMPLISHED FIM FAULT ISOLATION PROCEDURES FOR FUMES / SMOKE IN CABIN. NO ELECTRICAL SMOKE SMELL NOTED. IAW FIM J21-22-00. A/C OK FOR CONT SVC."

DIV/DE- TO SLC DUE TO ELECTRICAL SMELL IN THE FLIGHT DECK AND STANDBY INVERTER MESSAGE. REPLACED STANDBY INVERTER.

AIRCRAFT WAS GROUNDED: ON DESCENT GOT FUMES OF BURNT PLASTIC THROUGH 8000 FT. UPON LANDING FA'S REPORTED SMELLS OF BURNT OIL AND DIRTY SOCKS. MAINTENANCE REPLACED APU.

(LOG 8004328) ODOR ON T/O DISSIPATED WHILE CLIMBING ODOR RETURNED WHILE ON APPROACH THROUGH FL180. ISOLATED ODOR FROM APU BLEED AIR. PERFORMED OIL DECONTAMINATION. COMPLETED BLACK LIGHT USE AT APU DUCT, LIGHT OIL RESIDUE NOTED. DUCT REASSEMBLED. BLACK LIGHT USED IN PACK COMPARTMENT APU BLEED DUCT, ACM, CONDENSOR, + HEAT EXCHANGER, NO OIL NOTED.

SMELLED "DIRTY SOCK" ODOR SHORTLY AFTER FLAP 1 SELECTION DURING APPROACH. LASTED APPROX 2 MINS ANS DISSAPATED. C/W WORKCARD 0550-2002 IDENTIFIED OIL LEAKING FROM APU INTO PLENUM. PERF LEVEL B ECS DECONTAMINATION WORKCARD 2100-2005. CHANGED RECIRC FILTERS PER A320 AMM 21-21. ODOR CLEARED. A/C OK FOR SVC. (LP: 7653294)

(AIRCRAFT NOT GROUNDED) FA'S REPORT DIRTY SOCK SMELL FWD CABIN IN THE DESCENT PHASE ROW 5 AND FORWARD, DID NOT SMELL ANY ODOR IN THE FLIGHT DECK / (RESOLVED ON W/O: 534158 TASKCARD: NR-00001 ) LEVEL II DECONTAMINATION COMPLETED. FOUND LEAK AT OIL COOLER FAN ASSY. R&R'D APU OIL COOLING FAN ASSY. REF AMM 49-52-51-000-002-A AND AMM 49-52-51-400-002-A LEAK AND OPS CHECK GOOD.

SUSPECT FUME FROM AIR PACK ONE -PERFORMED TSM 05-50-00-810-831-A AND FOUND APU TO BE THE SOURCE OF THE ODOR EVENT. PERFORMED ENGINE RUNS WITH CREW USING HUFFER CART. PACK 1 AND PACK 2 CHECKS SATISFACTORY ON BOTH ENGINES; NO ODORS NOTED. A/C OK FOR SERVICE. MOC #120882. REF LOGPAGE 3427040-2 FOR APU DEFERRAL.

AIRCRAFT WAS GROUNDED: SOF EVENT, TO BE ACCOMPLISHED BEFORE FURTHER FLIGHT,DUE TO PIREP 1608215, POSSIBLE CABIN ODOR ON DESCENT AND TAXI IN". FOUND SOURCE OF ODOR CAUSED BY LEAKING SELECTOR VALVE 2576GM REF MIC # 1609035. MAINTENANCE REPLACED UPPER OUTBOARD LEFT UNIONS AND O-RINGS ON AUTOBRAKE SELECTOR VALVE IAW AMM 32-42-13

ENGINE 2 FIRE ON TAKE OFF. SHUT ENGINE DOWN AND FIRE ALERT WENT AWAY. SPARKS AND SMOKE REPORTED SEEN BY FAS AND PASSENGERS. PERFORMED INSPECTION AFTER ENGINE WINDMILLING ON ENG#2 AFTER ENGINE IN-FLIGHT SHUTDOWN AND FOUND HARNESS CONNECTOR DAMAGE ON CONNECTORS P105, P110, 401VC, 405VC, 404VC, 454VC AND 4108VC. FUEL RETURN LINE P/N AE1002-624-AS1072, AIR OIL HEAT EXCHANGER BELOW SEAL P/N 5323415, FIRE HARNESS CONNECTOR FIN WCOS P/N 1020890-2 ENG # PEDAL CABLES FIN 4002XV, 4003X

MUSTY ODOR ON FLIGHT DECK AS WE DESCENDED TO 4000' MIL. SEEMED TO GO AWAY BUT RETURNED AFTER LANDING. REPLACED APU. (LP 7781910, 1252891)