# JASC 2121: Air Distribution Fan

- Type: JASC system/component code (FAA)
- ATA chapter: 21 Air Conditioning
- Title in the code table: AIR DISTRIBUTION FAN
- Service difficulty reports: 4,375
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=16
- Page: https://openairdocs.org/jasc/2121

## What it covers

For reports pertaining to the fan/blower including associated motor which distributes air within the confine for comfort or equipment cooling. Typical parts are bearing, bushing, motor, etc.

## Service difficulty reports (4,375, newest 50)

- [SDR DALA2026102005760](https://openairdocs.org/sdr/DALA2026102005760), Oct 20, 2026: Airbus A319114. FAN. FAILED. IN DESCENT OUT OF FL330 GOT BURNING ELECTRICAL AND RUBBER ODOR THROUGHT ACFT. AMBER FAN ON CONDITION PAGE. REMOVED CABIN (N348NB)
- [SDR AALA202610190251](https://openairdocs.org/sdr/AALA202610190251), Oct 18, 2026: Airbus A319115. RELAY. DAMAGED. AIRCRAFT WAS GROUNDED: ON DESCENT OUT OF 10,000 FLIGHT DECK HAD AN ELECTRICAL SMELL. DISSIPATED BY 6,000. MAINTENANCE PE (N4032T)
- [SDR VNAA2026102026701](https://openairdocs.org/sdr/VNAA2026102026701), Oct 17, 2026: Cndair CL6002D24. FAN. FAILED. EVACUATION FOR FUMES IN AIRCRAFT. C/W FIM 21-22-00-810-806-A01 AND 21-21-00-810-806-A01. CABIN FUMES APPEAR TO BE FROM A (N574NN)
- [SDR SWAA2026100891056](https://openairdocs.org/sdr/SWAA2026100891056), Oct 4, 2026: Boeing 7378. FAN. ODOR. ACRID ODOR ON DESCENT, DISSIPATED WITH RECIRC FANS TURNED OFF. REAPPEARED WITH FANS BACK ON AT GATE. R & R LT RECIRC FAN (N8790Q)
- [SDR CALA2026100520077](https://openairdocs.org/sdr/CALA2026100520077), Oct 2, 2026: Boeing 757224. APU. ODOR. AFTER ENG SHUTDOWN AT GATE APU BLEED ON. SMOKE FILLED CABIN SLIG HT BURN SMELL PERFORM CONDITIONAL INSPECTION PER AMM 05 (N14115)
- [SDR EVCA2026100126](https://openairdocs.org/sdr/EVCA2026100126), Sep 30, 2026: Bell 206L3. BLOWER MOTOR. UNSERVICEABLE. ELECTRICAL SMELL WHEN AIR CONDITIONER IS TURNED ON. AFT BLOWER MOTOR WAS THE CAUSE. SYSTEM MEL'ED UNTIL A REPLACEMENT AR (N293AE)
- [SDR DALA2026093005427](https://openairdocs.org/sdr/DALA2026093005427), Sep 29, 2026: Airbus A321271NX. FAN. FAILED. ENROUTE, VENTB LOWER FAULT. ALSO HAD BURNING RUBBER ODOR. COMPLIED WITH ECAM ACTIONS & ODOR DISAPPEARED. FOUND VENT BLOW (N581DA)
- [SDR 2026FA0000791](https://openairdocs.org/sdr/2026FA0000791), Sep 29, 2026: Piper PA44180. MOTOR. OVERHEATED. VENT MOTOR FOUND INOPERATIVE, WITH EVIDENCE OF OVERHEATING. (N443BG)
- [SDR QMLA2026092120072](https://openairdocs.org/sdr/QMLA2026092120072), Sep 20, 2026: Bell 407. BLOWER. ODOR. ON GOING ISSUE WITH AN ELECTRICAL SMELL IN FLIGHT. HAPPENED AGAIN LAST NIGHT FIRST TIME ME THE PILOT EVER SMELLED IT. WO (N229AM)
- [SDR DALA2026092205287](https://openairdocs.org/sdr/DALA2026092205287), Sep 19, 2026: Airbus A321213. FAN. FAULTED. FUMES, DECLARED AN EMERGENCY DUE TO AN ELECTRICAL ODOR FOLLOWED BY VENT EXTRACT FAULT ECAM WARNING. FOUND VENT EXTRACT F (N318DX)
- [SDR QMLA2026092820074](https://openairdocs.org/sdr/QMLA2026092820074), Sep 18, 2026: Urocop EC130B4. BLOWER MOTOR. FAILED. ELECTRICAL BURN SMELL 5 TO 10 MINUTES INTO FLIGHT IN CABIN. THE SMELL WAS VERY POTENT BUT ONLY LASTED ABOUT 5 TO 10 SECO (N388AM)
- [SDR N6WA2026091819](https://openairdocs.org/sdr/N6WA2026091819), Sep 17, 2026: Cndair CL6002C11. COOLING FAN. FAULTED. DISPLAY COOL CAUTION MESSAGE (B1-006414 DISPLAY FAN1 / LOW FAN SPEED) - RETURN FLIGHT. REMOVED AND REPLACED DISPLAY SUPP (N563GJ)
- [SDR AALA202609172244](https://openairdocs.org/sdr/AALA202609172244), Sep 14, 2026: Airbus A321231. FAN. ODOR. AIRCRAFT WAS NOT GROUNDED: 1 HOUR 40 MINUTES INTO FLIGHT TO CANCUN FLIGHT, AT FL 370, WE STARTED GETTING A CONSTANT NOIS (N908AA)
- [SDR DALA2026091405116](https://openairdocs.org/sdr/DALA2026091405116), Sep 13, 2026: Airbus A320212. FAN. FAILED. TEN MINUTES PRIOR TO TOP OF DESCENT BOTH PILOTS SMELLED A BURRING PLASTIC SMELL WHICH CONTINUED THROUGH MOST OF THE DESC (N341NW)
- [SDR AALA202609167972](https://openairdocs.org/sdr/AALA202609167972), Sep 12, 2026: Airbus A321231. COOLING FAN. LEAKING. AIRCRAFT WAS GROUNDED: DESCENDING THRU10000 FT THE PACKS GIVE OFF STRONG ODOR - MAINTENANCE FOUND THE APU OIL COOLING FA (N111ZM)
- [SDR SWIA2026090277099](https://openairdocs.org/sdr/SWIA2026090277099), Sep 2, 2026: Cndair CL6002C10. FAN. ODOR. STRONG ELECTRICAL ODOR NEAR GALLEY & ODOR CONTINUES THROUGH ACFT. (FLIGHT 4953) ON ARRIVAL TO ACFT, NO BURNING OR ELECTR (N719SK)
- [SDR CALA2026090319226](https://openairdocs.org/sdr/CALA2026090319226), Sep 2, 2026: Airbus A319131. FAN. FAULTED. VENT BLOWER FAULT ECAM ON GROUND. SWITCHING BLOWER TO OVERIDE C AUSES CHEMICAL ODOR REMOVED BLOWER FAN REF AMM 21-26-51- (N851UA)
- [SDR RJEF20263108001](https://openairdocs.org/sdr/RJEF20263108001), Aug 31, 2026: Airbus A320214. FAN. FAULTED. CABIN PRESSURE EXCESS CAB ALTITUDE DISPLAYED ON ECAM PROCEDURE WAS MADE ACCORDING TO OEB 61. PERFORMED GENERAL VISUAL IN (N686TA)
- [SDR AALA202608317383](https://openairdocs.org/sdr/AALA202608317383), Aug 24, 2026: Airbus A321231. FAN. FAULT MESSAGE. AIRCRAFT WAS NOT GROUNDED: DURING CRUISE FLIGHT AN ELECTRICAL ODOR IN THE AFT CABIN WAS REPORTED BY THE FLIGHT ATTENDANT (N543UW)
- [SDR EVCA202608250001](https://openairdocs.org/sdr/EVCA202608250001), Aug 24, 2026: Bell 206L4. BLOWER MOTOR. UNSERVICEABLE. BURNING ELECTRICAL ODOR IN THE CABIN. BLOWER MOTOR UNSERVICABLE. (N465AE)
- [SDR 8LFA202608250003](https://openairdocs.org/sdr/8LFA202608250003), Aug 23, 2026: Bell 407. RESISTOR. FAILED. DURING FLIGHT SMOKE/FUMES EMANATED FROM LEFT AIR CONDITIONING BLOWER. TROUBLESHOOTING REVEALED THAT A FAILED RESISTOR CA (N409LF)
- [SDR QMLA2026081320055](https://openairdocs.org/sdr/QMLA2026081320055), Aug 13, 2026: Urocop EC130B4. BLOWER MOTOR. BURNED OUT. ODOR OF BURNT ELECTRICAL WIRING. FOUND SMELL COMING FROM AFT AC VENTS. FOUND CONDENSATION/WATER IN ELECTRICAL MOTOR. REP (N910U)
- [SDR QMLA2026081420058](https://openairdocs.org/sdr/QMLA2026081420058), Aug 11, 2026: Urocop EC135P2. BLOWER MOTOR. ODOR. FUMES IN CABIN/ COCKPIT DURING CRUISE FLIGHT SHORTLY AFTER TAKEOFF. RESULTED IN ABORTED FLIGHT AND RETURN TO BASE. REPLA (N137AM)
- [SDR DALA2026081804714](https://openairdocs.org/sdr/DALA2026081804714), Aug 10, 2026: Airbus A321211. FAN. FAULTED. AIRCRAFT 3096, AT CRUISE GOT A CALL FROM AFT FA OF SMELLS. TURNED OFF CAB FANS, EXTRACT OVRD, BLOWER OVRD & GALLEY & CAB (N396DN)
- [SDR YENA2026080700659](https://openairdocs.org/sdr/YENA2026080700659), Aug 5, 2026: Airbus A321271NX. FAN. FAILED. FLT 220, SAN-BOS. MUSTY ODOR IN COCKPIT AND CABIN DURING DESCENT FROM 4000 FEET UNTIL LANDING PACK 1 OFF AND APU OFF. PA (N2180J)
- [SDR YENA2026080700658](https://openairdocs.org/sdr/YENA2026080700658), Aug 5, 2026: Airbus A320232. FAN. FAILED. FLT 588, MCO-ORH. AT FL 350 VERY HEAVY ELECTRICAL ODOR IN COCKPIT. CIRCUIT BREAKER X-18 POPPED AND ODOR SUBSIDED - LT RE (N606JB)
- [SDR YENA2026080500653](https://openairdocs.org/sdr/YENA2026080500653), Aug 4, 2026: Airbus A320232. COOLING FAN. FAILED. FLT 944, BZN-JFK. OIL FUMES EVENT INITIALLY OCCURED AT FL 250 ON DECENT. ODORS DISSIPATED FUMES AGAIN OCCURED ON FINAL A (N536JB)
- [SDR 2026FA0000617](https://openairdocs.org/sdr/2026FA0000617), Jul 31, 2026: Bell 407. BLOWER MOTOR. BURNED OUT. CREW SMELLED A BURNING OR SMOKY SMELL COMING FROM AC VENTS. TURNED OFF AC AND BLOWER MOTOR, PULLED CIRCUIT BREAKER FOR A (N407BU)
- [SDR CALA2026080218157](https://openairdocs.org/sdr/CALA2026080218157), Jul 30, 2026: Boeing 757224. FAN. FAULTY. STRONG FUME/ODOR IN FLIGHT DECK. PERFORMED CONDITIONAL INSPECTION IAW AMM 05-51-58. UNABLE TO FIND SUSPECTED CAUSE, AND  (N14121)
- [SDR AALA202607301669](https://openairdocs.org/sdr/AALA202607301669), Jul 27, 2026: Airbus A321211. FAN. FAULTED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED INBOUND INTO CLT DUE TO THE FLIGHT CREW REPORTING LOW FREQUENCY VIBRATI (N189UW)
- [SDR YENA2026072800629](https://openairdocs.org/sdr/YENA2026072800629), Jul 26, 2026: Airbus A320232. COOLING FAN. FAILED. FLT 23, DCA-DJT. DURING DESCENT 14000 MSL LIGHT INTENSITY ODOR DIRTY SOCK IN COCKPIT - PACK ONE OFF SEEMED TO DIMINISH O (N536JB)
- [SDR HNAA2026072800638](https://openairdocs.org/sdr/HNAA2026072800638), Jul 25, 2026: Emb EMB145LR. FAN. INOPERATIVE. REPORTED FUMES/ODOR WITH APU OPERATION. WHILE T/S FPOUND NO 1 RECIRC FAN INOP W FUSE F0059 BLOWN R/R FUSE F0059 IRW AMM  (N645AE)
- [SDR QXEA2026072800168](https://openairdocs.org/sdr/QXEA2026072800168), Jul 24, 2026: Emb ERJ170200LR. RELAY. FAILED. FLIGHT 2117. RECIRC 2 FAN FAILED. PLACED ON MEL 21-24-01A. MEL CLEARED BY CHECKED AND FOUND NO VOLTAGE AT RECIRCULATION  (N669QX)
- [SDR YENA2026072100607](https://openairdocs.org/sdr/YENA2026072100607), Jul 20, 2026: Airbus A321271NX. FAN. WARNING MESSAGE. FLT 1408, CDG-JFK. (ETOPS) COND LAV & GALLEY FAN FAULT CAUTION APPEARED DURING FLIGHT. ASSOCIATED WITH THE MESSAGE FWD & (N4048J)
- [SDR CALA2026072417963](https://openairdocs.org/sdr/CALA2026072417963), Jul 18, 2026: Boeing 737824. FAN. FAILED. FA REPORTS SMOKE AND FUMES IN AFT OF ACFT. SUBSIDED WITH QRC UPDATED. PER CHECKLIST, SHUTDOWN RECIRC FANS AND SMOKE & OD (N18223)
- [SDR CALA2026071517790](https://openairdocs.org/sdr/CALA2026071517790), Jul 9, 2026: Boeing 767322. FAN. FAULTED. STRONG ELEC BURNING ODOR, FOLLOWED BY LT RECIRC FAN CAS MESSAGE ODOR, ODOR DISAPATED WITH FAN OFF. DEBRIEF WITH CREW, NO (N671UA)
- [SDR CALA2026070617561](https://openairdocs.org/sdr/CALA2026070617561), Jun 29, 2026: Boeing 78710. FAN. FAULTED. DUE TO MULTIPLE LAV/AFT GALLEY LOW AIRFLOW AND LAVATORY/GALLEY FAN 1 MESSAGE WITH ADDITIONAL ITEMS OF LAV ODOR AT LAV "C (N12004)
- [SDR CALA2026070117497](https://openairdocs.org/sdr/CALA2026070117497), Jun 29, 2026: Boeing 767322. FAN. FAULTED. AT TOP OF DESCENT LOUD POPPING NOISE FOLLOWED BY LOUD AIR SURGE SOUND FOLLOWED BY A BURNING SMELL FOR ONE MINUTE THEN TH (N654UA)
- [SDR CALA2026070117496](https://openairdocs.org/sdr/CALA2026070117496), Jun 29, 2026: Boeing 7878. FAN. FAULTED. FWD ZONAL DRYER FAN FAILS, LATCHED MAINTENANCE MESSAGE 21-71211. R & R FWD ZONAL DRYER IAW AMM 21-72-01-00A-720A.MESSAGE (N30913)
- [SDR VNAA2026062920404](https://openairdocs.org/sdr/VNAA2026062920404), Jun 26, 2026: Cndair CL6002D24. FAN. UNSERVICEABLE. APU DOOR CAUTION MSG AFTER TAKE OFF. FA AND AFT FA REPORT A STRONG BURNING ODOR AT THE SAME TIME DURING TAKE OFF . RAN A (N559NN)
- [SDR VNAA2026062619801](https://openairdocs.org/sdr/VNAA2026062619801), Jun 23, 2026: Cndair CL6002D24. FAN. FAILED. RECIRCULATION FAN FAULT MESSAGE. DEFERRED RECIRCULATION FAN NR 2 IAW MEL 21-22-01-2 CAT C. FC FUNCTION C/W BY PULLING AN (N560NN)
- [SDR 2026FA0000545](https://openairdocs.org/sdr/2026FA0000545), Jun 22, 2026: Bolkms BK117C2. BLOWER MOTOR. BROKEN. UNUSUAL NOISE FROM THE PASSENGER BLOWER MOTOR. (N240SF)
- [SDR EVCA20260714001](https://openairdocs.org/sdr/EVCA20260714001), Jun 21, 2026: Bell 407. MOTOR. FAULTED. AIRCRAFT DEPARTED THE BASE FOR A SCENE FLIGHT IN NASHVILLE ARKANSAS. APPROXIMATELY 5 MINUTES AFTER DEPARTURE CREW DESCRI (N102AE)
- [SDR U2RA202606200031](https://openairdocs.org/sdr/U2RA202606200031), Jun 20, 2026: Airbus A330243. FAN. FAILED. SMOKE IN COCKPIT FOR A MOMENT AT 2320Z ASSOCIATED BURNING SMELL (ELECTRICAL) INTERMITTENT FOR REMAINDER OF FLT IN ALL GA (N828CA)
- [SDR WX0A2026061932855](https://openairdocs.org/sdr/WX0A2026061932855), Jun 17, 2026: Airbus A320214. FAN. ODOR. (AIRCRAFT NOT GROUNDED) AT 23:00Z 45 MIN FROM LANDING AT ATW AT 35,000 CRUZE FWD FA AND FLIGHT DECK CREW SMELLED ELECTRI (N196NV)
- [SDR RU3A202606250249](https://openairdocs.org/sdr/RU3A202606250249), Jun 16, 2026: Beech 300BEECH. COOLING FAN. ARCED. DURING FLIGHT INSPECTION AT KSAV IN N77 ALL CREW MEMBERS ACKNOWLEDGED SIGNIFICANT EYE IRRITANT PRESENT. MYSELF AND MS HA (N77)
- [SDR QMLA2026061220037](https://openairdocs.org/sdr/QMLA2026061220037), Jun 11, 2026: Bell 407. BLOWER MOTOR. FAILED. DURING DECELERATION ON APPROACH TO HOME BASE, BOTH AIR-CONDITIONING BLOWERS CEASED OPERATING. SHORTLY THEREAFTER, ALL OC (N407LS)
- [SDR REXA2026061700966](https://openairdocs.org/sdr/REXA2026061700966), Jun 10, 2026: Cndair CL6002D24. FAN. INOPERATIVE. DURING FINAL APPROACH FLIGHT ATTENDANT REPORTED SMELL OF SMOKE AS WELL AS HAZE { LIGHT SMOKE} IN FWD CABIN EMERGENCY DEC (N926XJ)
- [SDR 2026FA0000509](https://openairdocs.org/sdr/2026FA0000509), Jun 9, 2026: Bolkms BK117C2. BLOWER. FAULTY. DURING TAKEOFF IT WAS NOTED AN UNUSUAL NOISE WAS HEARD IN THE CABIN OVERHEAD FOLLOWED BY AN ODOR. ABORTED TAKEOFF AND SH (N240SF)
- [SDR DALA2026061303559](https://openairdocs.org/sdr/DALA2026061303559), Jun 8, 2026: Boeing 767332. CHECK VALVE. FAULTED. DURING PUSH GALLEYS LOST POWER UPON RESET OF UTIITY BUSES A BRIEF ELECTRICAL ODOR WAS NOTED IN THE COCKIT AND FWD GALLEY (N180DN)

All 4,375: https://openairdocs.org/jasc/2121/reports.md

## Other codes in chapter 21

- [JASC 2100](https://openairdocs.org/jasc/2100): Air Conditioning System (1,354 reports)
- [JASC 2110](https://openairdocs.org/jasc/2110): Cabin Compressor System (252 reports)
- [JASC 2120](https://openairdocs.org/jasc/2120): Air Distribution System (15,360 reports)
- [JASC 2130](https://openairdocs.org/jasc/2130): Cabin Pressure Control System (3,454 reports)
- [JASC 2131](https://openairdocs.org/jasc/2131): Cabin Pressure Controller (2,041 reports)
- [JASC 2132](https://openairdocs.org/jasc/2132): Cabin Pressure Indicator (94 reports)
- [JASC 2133](https://openairdocs.org/jasc/2133): Pressure Regulator/Outflow Valve (1,711 reports)
- [JASC 2134](https://openairdocs.org/jasc/2134): Cabin Pressure Sensor (40 reports)
- [JASC 2140](https://openairdocs.org/jasc/2140): Heating System (1,020 reports)
- [JASC 2150](https://openairdocs.org/jasc/2150): Cabin Cooling System (12,384 reports)
- [JASC 2160](https://openairdocs.org/jasc/2160): Cabin Temperature Control System (3,040 reports)
- [JASC 2161](https://openairdocs.org/jasc/2161): Cabin Temperature Controller (308 reports)
- [JASC 2162](https://openairdocs.org/jasc/2162): Cabin Temperature Indicator (69 reports)
- [JASC 2163](https://openairdocs.org/jasc/2163): Cabin Temperature Sensor (154 reports)
- [JASC 2170](https://openairdocs.org/jasc/2170): Humidity Control System (1,332 reports)
- [JASC 2197](https://openairdocs.org/jasc/2197): Air Conditioning System Wiring (497 reports)

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