# Service difficulty reports: JASC 4930

A list on [JASC 4930](https://openairdocs.org/jasc/4930.md).

Reports filed under 4930 · APU Engine Fuel and Control, newest first.

Page 1 of 22 · 1,087 reports

- [SDR YENA2026100900933](https://openairdocs.org/sdr/YENA2026100900933.md): Pump · failed · Oct 8, 2026 · N4073J · Airbus A321271NX
  > FLT 033, BOS-CDG. (ETOPS) AT PREFLIGHT APU START APU FUEL LO PR ECAM (APU FUEL PUMP). R & R APU FUEL PUMP IAW AMM 28-22-51. OPS & LEAK CHKD GOOD. FAULT IS CLEARED. MX-4 UPDATED. PLACARD RMVD.
- [SDR AALA202610108558](https://openairdocs.org/sdr/AALA202610108558.md): Fcu · leaking · Oct 7, 2026 · N932AM · Airbus A321231
  > AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANTS REPORTED A CRAYON TYPE BURNING SMELL DURING APPROACH AND TAXI AFTER LANDING. SMELL DISSIPATED AFTER SINGLE ENGINE TAXI - MAINTENANCE FOUND THE APU GEARBOX VENT LINE HAD EVIDENCE OF COKING AND REPLACED IT *AALA2026101043
- [SDR CALA2026092119558](https://openairdocs.org/sdr/CALA2026092119558.md): Packing · leaking · Sep 19, 2026 · N76055 · Boeing 767424ER
  > ODOR IN A/C APU SUPPLYING PACKS FOUND APU FUEL CONTROL CLUSTER LEAKING. O-RINGS NEED TO BE REPLACED. EIGHT O-RINGS WERE CHANGED ON THE APU FUEL CONTROL UNIT IAW AMM 49-11-00. OK TO CONTINUE.
- [SDR DALA2026092205276](https://openairdocs.org/sdr/DALA2026092205276.md): Packing · leaking · Sep 15, 2026 · N842MH · Boeing 767432ER
  > AFTER APU START HAD A FUEL ODOR AFTER SHUT DOWN, IT BEGAN TO DECREASE. BOTH PACKING ON FUEL SUPPLY TUBE FUEL CONTROL UNIT REPLACED PERFORMED AS PER AMM 45-31-01(9513560)(AIRCRAFT GROUNDED)
- [SDR AALA202608215048](https://openairdocs.org/sdr/AALA202608215048.md): Fcu · leaking · Aug 19, 2026 · N829AW · Airbus A319132
  > AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED DIRTY SOCK SMELL WITH APU ON - MAINTENANCE FOUND THE APU AIR INTAKE PLENUM ASSEMBLY SATURATED IN OIL AND NOTED OIL OUTSIDE THE FCU DRAIN - MAINTENANCE REPLACED THE FCU *AALA202608215048* AND THE APU INTAKE PLENUM ASS
- [SDR CALA2026070717599](https://openairdocs.org/sdr/CALA2026070717599.md): Packing · leaking · Jul 6, 2026 · N69059 · Boeing 767424ER
  > CREW REPORTED FUEL ODOR FROM PACKS. FOUND SUBSTAINTIAL FUEL LEAK FROM APU ACCESS DOOR AND 313AL (APU CONTROL BAY ACCESS DOOR). REPLACED PACKINGS FROM THE SUPPLY TUBES FOR THE IGV ACUATOR AND CONTROL VALVE IAW AMM 49-31-01. OP CHECK AND LEAK CHECKED GOOD.
- [SDR SWIA2026070176357](https://openairdocs.org/sdr/SWIA2026070176357.md): Solenoid Valve · odor · Jul 1, 2026 · N218PS · Cndair CL6002B19
  > DURING CRUISE, SMELL OF FUEL IN COCKPIT. FA REPORTED SMELL OF FUEL IN THE CABIN. SMELLED STRONGER TOWARD THE REAR OF CABIN. (FLIGHT 5137) FOUND APU FUEL SHUT OFF SOLENOID VALVE LEAKING. REMOVED AND REPLACED THE APU FUEL SHUT OFF SOLENOID VALVE REF AMM 49-31-
- [SDR CALA2026060916951](https://openairdocs.org/sdr/CALA2026060916951.md): Fcu · faulted · Jun 7, 2026 · N76055 · Boeing 767424ER
  > WITH APU RUNNING EXHAUST FUMES ENTERING AIRCRAFT.DURING TRANSIT CHECK FOUND BIG FUEL LEAK FROM FCU APU, CHECKED WITH ALL MAIM FUEL PUMPS ON,APU OFF NO MORE LEAKS NOTED,FOR THAT REQUEST DISPATCH A/C IAW MEL 4911F MEL 4911F PLEASE APPLY 4911D AS PREVIOUSLY AG
- [SDR AALA202606038566](https://openairdocs.org/sdr/AALA202606038566.md): Fcu · leaking · May 31, 2026 · N167US · Airbus A321211
  > AIRCRAFT WAS GROUNDED: FLIGHT DECK EXPERIENCED MODERATE "MOLDY SOCK" ODOR DURING IDLE POWER DESCENT INTO CLT. THE ODOR STRENGTH REDUCED IN INTENSITY WITH ENGINE N1 LEVELS WERE ABOVE 64%. ODOR WAS NOT NOTICEABLE ON GROUND DURING TAXI TO GATE OR ON APU BLEED SUP
- [SDR AALA202604205833](https://openairdocs.org/sdr/AALA202604205833.md): Fcu · leaking · Apr 14, 2026 · N762US · Airbus A319112
  > AIRCRAFT WAS GROUNDED: WITH APU BLEED ON, STRONG FOUL SMELL. AFTER ENGINE START AND APUSELECTED OFF, SMELL DISSIPATED. ON DESCENT WITH ENGINES IDLE, SMELL CAME BACK.SINGLE PACK OPERATION AS WELL. #2 PACK WAS SELECTED OFF PER MEL. MAINTENANCE REPLACED APU FCU I
- [SDR YENA2026041000386](https://openairdocs.org/sdr/YENA2026041000386.md): Pressure System · failed · Apr 8, 2026 · N4074J · Airbus A321271NX
  > FLT# 724, LAX-JFK. (ETOPS) "APU AUTOSHUTDOWN; REMOVED AND REPLACED SWITCH PRESSURE 7QC IAW AMM 28-22-83 OPS CHK GOOD A/C OK FOR CONT. SVC"
- [SDR CALA2026040615069](https://openairdocs.org/sdr/CALA2026040615069.md): Fuel Line · leaking · Apr 5, 2026 · N893UA · Airbus A319132
  > WHEN PACKS ARE RUNNING ON APU BLEED STRONG FUEL OR EXHAUST SMELL INBD CREW REPOERTED ONLY SMELL WHEN USING THE APU. AFTER TAKEOFF SMELL WENT AWAY. WHEN APU STARTED AGAIN IN EWR SMELL CAME BACK. CONFIRMED STRONG FUEL SMEEL THROUGHT THE CABIN. AND FLIGHT DECK. F
- [SDR CALA2026040615068](https://openairdocs.org/sdr/CALA2026040615068.md): Seal · leaking · Apr 3, 2026 · N76055 · Boeing 767424ER
  > APU LEAKING, SMELLS LIKE GAS IN AIRPLANE FOUND DEFECTIVE APU FUEL POWER UNIT LINE SEAL, R/R APU FUEL POWER UNIT SEALS PER IPC 49-31-00-02 ITEM 5,15,20. OPERATED APU NO LEAKS NOTED AT THIS TIME AND NO SMELL OF FUEL NOTED.
- [SDR YENA2026032700343](https://openairdocs.org/sdr/YENA2026032700343.md): Fuel Control · failed · Mar 26, 2026 · N2199J · Airbus A321271NX
  > FLT # 8580 MLB- JFK (ETOPS). " APU AUTO SHUTDOWN.; REMOVED AND REPLACED FCU IAW AMM 49-32-11. OPS CHK GOOD. A/C OK FOR SVC. NO LEAKS NOTED.
- [SDR DALA2026031101673](https://openairdocs.org/sdr/DALA2026031101673.md): Actuator · leaking · Mar 10, 2026 · N322NB · Airbus A319114
  > DURING TAXI OUT, STRONG FUME ODOR FILLED THE FLIGHT DECK. FO DID NOT NOTICE (BUT SAID HE HAS BAD SENSE OF SMELL) STRONGER ODOR AFTER PARKING AT GATE. SMELLED LIKE EXHAUST NOTICED ON ARRIVAL PREV FLIGHT A SMELL BUT IT WAS QUICK AND I WASN'T SURE OR WAS ABLE TO
- [SDR HNAA2026030200165](https://openairdocs.org/sdr/HNAA2026030200165.md): Gasket · leaking · Mar 2, 2026 · N690AE · Emb EMB145LR
  > AMMAENDED: STRONG FUEL SMELL/ODOR ENTERED COCKPIT AND CABIN ON APU START HAS EXTENSIVE HISTORY - APU FAIL ON EICAS MESSAGE ALSO DISPLAYED MEL 02MAR26 11:53 GRR C06116 49-1 APU AUXILIARY POWER UNIT DFRL 04MAR26 08:46 SBY ENGINE PROGRAMS DEPARTM
- [SDR AALA202602183501](https://openairdocs.org/sdr/AALA202602183501.md): Fcu · leaking · Feb 16, 2026 · N773XF · Airbus A319112
  > AIRCRAFT WAS GROUNDED: AIRCRAFT HAD SUBTLE HINTS OF ODOR SIMILAR TO SOF EVENT BUT NOT BAD ENOUGH OR PERSISTENT ENOUGH TO WARRANT ACTION AIRBORNE. IT WAS NOTICEABLE FOR A SHORT TIME DURING ENGINE START AND TAXI BUT THEN DISSIPATED, AND AGAIN IN A SIMILAR FASHIO
- [SDR AALA202602189663](https://openairdocs.org/sdr/AALA202602189663.md): Fcu · odor · Feb 10, 2026 · N773XF · Airbus A319112
  > AIRCRAFT WAS GROUNDED: INBOUND FLIGHT ATTENDANTS REPORTED THAT ON THE DECENT IN THE KEY WEST BELOW 10,000 FT THEY SMELT A VERY STRONG OILY, CAR GARAGE, MUSTY SOCK ODOR SMELL ONE OF THEM FELT FLUSH THE OTHER ONE BEGAN TO GET SYMPTOMS OF A HEADACHE. DURING PRE-
- [SDR CALA2026021013647](https://openairdocs.org/sdr/CALA2026021013647.md): Packing · leaking · Feb 8, 2026 · N66051 · Boeing 767424ER
  > PUDDLE OF LIQUID UNDERNEATH APU. LIQUID APPEARS TO BE DRIPPING FROM APU. UPON INSPECTION OF APU, FOUND APU RETURN TUBE FOR THE IGV ACTUATOR AND SURGE CONTROL VALVE LEAKING. R & R PACKINGS IAW AMM 49-31-01. OPS & LEAK CHKD GOOD. NO FUEL ODORS NOTED.
- [SDR YENA2026020900159](https://openairdocs.org/sdr/YENA2026020900159.md): Fcu · leaking · Feb 7, 2026 · N625JB · Airbus A320232
  > FLT 471, LGA-FLL, F4 REPORTED ODOR EVENT BELOW 10000 FT DECENDING INTO FLL DESCRIBED AS METALLIC CHEMICAL ODOR AND FEELING LIGHT HEADED AND HAVING A HEADACHE.; COMPLIED WITH INFO-NOTICE 2017-T015 M. IDENTIFIED SOURCE OF ODOR TO APU FCU FUEL DRIP FROM DRAIN
- [SDR CALA2026011913037](https://openairdocs.org/sdr/CALA2026011913037.md): O-Ring · leaking · Jan 15, 2026 · N76055 · Boeing 767424ER
  > APU LEAKING FUEL STRONG ODER OF FUEL IN CABIN. APU FUEL SUPPLY LINE [6] MM 49-31-01-004-001-001 (401) FIG 401 SHEET 2 (SUPPLY TUBE FOR THE IGV ACT AND SURGE CONTROL VALVE LEAKS). CLEANED RESIDUAL FUEL FROM APU COMP. LINE IS SECURED. CURRENTLY NO SMELL IN TH
- [SDR DALA2026011900408](https://openairdocs.org/sdr/DALA2026011900408.md): Actuator · leaking · Jan 10, 2026 · N536DN · Airbus A321271NX
  > PRE-DEPARTURE UPON USING APU BLEED FOR ACFT, WE EXPERIENCED MILD FUMES CONTINUED FOR 1 MINUTE. FOUND APU IGV ACTUATOR LEAKING FUEL, REPLACED APU IGV ACTUATOR IAW AMM 49-23-51 AND PERFORMED APU WASH. (LP 8062337)
- [SDR FDEA202601060006](https://openairdocs.org/sdr/FDEA202601060006.md): Valve · leaking · Jan 6, 2026 · N131FE · Boeing 7673S2F
  > DURING POST FLIGHT WALK AROUND FOUND FUEL LEAKING FROM LEFT WING AFT SPAR FWD OF LMLG, SHUT DOWN THE APU AND FUEL STOPPED LEAKING. VERIFIED FUEL LEAK AT APU FUEL SHUTOFF VALVE V96 AND THAT WITH FUEL PUMPS ON AND APU OFF "FSV CLOSED" THE FUEL HAS STOPPED LEAK
- [SDR NACA2025123000001](https://openairdocs.org/sdr/NACA2025123000001.md): Actuator · failed · Dec 30, 2025 · N563NC · Boeing 7673BG
  > APU FUEL SHUT OFF VALVE FAILED AN OPS CHECK. APU FIRE SWITCH CHECK, DOES NOT CLOSE OR OPEN ELECTRICALLY. R & R THE APU SHUT OFF VALVE ACTUATOR IAW AMM 28-25-00-004-032, & AMM 28-25-02-404-008 STEPS 3.G. (3) - 3.G (8). PERFORMED APU FUEL FEED SYS TEST. TES
- [SDR YENA2025102101045](https://openairdocs.org/sdr/YENA2025102101045.md): Valve · leaking · Oct 16, 2025 · N655JB · Airbus A320232
  > FLT#429, PHL-FLL. F/AS ADVISE CABIN ODOR SMELL ON AIRCRAFT; COMPLIED WITH ALL TASKS ASSIGNED TO W/O 1448876. APU & COMP CLEANING. FOUND APU FCU LEAKING, FOUND SURGE VLV LEAKING, FOUND IGV ACTUATOR LEAKING. A LVL B ECS DECONTAMINATION WAS COMPLIED WITH. INSPECT
- [SDR CALA2025101610165](https://openairdocs.org/sdr/CALA2025101610165.md): O-Ring · leaking · Oct 14, 2025 · N66056 · Boeing 767424ER
  > FUEL FUMES IN THE CABIN AND COCKPIT CONFIRMED FUEL ODOR COMING FROM BOTH PACKS. T/S TO APU FUEL LEAKING FUEL. APU FIRE HANDLE PULLED. INSPECTED APU, FOUND LEAK AT FUEL LINE. REMOVED AND REPLACED RECIRCULATION AIR FILTERS IAW AMM 21-25-02 AS PRECAUTION IAW AMM
- [SDR I5PA2025101375701](https://openairdocs.org/sdr/I5PA2025101375701.md): Shutoff Valve · faulty · Oct 13, 2025 · N757QM · Boeing 75729J
  > FLT: MGE831, APU FUEL VAL EICAS. R & R APU FUEL SHUTOFF VALVE IAW AMM, OPS CHECK NORMAL.
- [SDR YENA2025101401033](https://openairdocs.org/sdr/YENA2025101401033.md): Fcu · leaking · Oct 13, 2025 · N969JT · Airbus A321231
  > FLT 189, JFK-SAN. DESCENDING THROUGH 9000 FT ON ARRIVAL, FLIGHT ATTENDANT IN AFT GALLEY REPORTED FUMES (DIRTY SOCK SMELL). NO SMELL REPORTED IN FORWARD GALLEY. FOUND FCU LEAKING, R & R IAW AMM 49-32-11, LEVEL A DECON IAW AMM 21-00-00,
- [SDR CALA2025092509249](https://openairdocs.org/sdr/CALA2025092509249.md): Drain Line · clogged · Sep 24, 2025 · N884UA · Airbus A319132
  > FUEL ODOR IN CABIN WITH APU DEBRIEFED CREW, FUEL ODOR DURING APU BLEED ON. SMELLED ODOR IN FLIGHT DECK FOR A FEW MINS. PARAMETER WERE NORMAL. TALKED TO FA, FA DID NOT SMELL ANY ODOR..INSPECTED APU COMPARTMENT. FOUND FUEL BACKED UP IN AFT DRAIN LINE. SUSPECTE
- [SDR CALA2025090808562](https://openairdocs.org/sdr/CALA2025090808562.md): Fuel Control · leaking · Sep 6, 2025 · N69059 · Boeing 767424ER
  > UPON APU START CABIN FILLED WITH FUEL VAPOR. SHUTDOWN APU UPON INSP OF APU FOUND FUEL LEAK FROM APU FUEL CONTROL FOUND APU FUEL CONTROL LEAKING. SHUT DOWN APU AND VERIFIED FUEL LEAK STOPS WITH SWITCH OFF AND BOOST PUMPS. REQUESTING MEL FOR APU INOP. DDP COMPLI
- [SDR CALA2025090208342](https://openairdocs.org/sdr/CALA2025090208342.md): Fuel Sys · leaking · Aug 30, 2025 · N77066 · Boeing 767424ER
  > CREW REPORTS FUEL SMELL IN CABIN. FUEL FOUND LEAKING FROM APU COPMARTMENT. APU FUEL CONTROLLER LEAKING AT SURGE CONTROL VALVE SUPPLY AND RETURN LINES. REMOVED SUPPLY LINES TO IGV ACTUATOR, FUEL FLOW DIVIDER, AND SCV REF AMM TASK 49-31-01-004-001-001. FOUND PAC
- [SDR NACA2025081900001](https://openairdocs.org/sdr/NACA2025081900001.md): Shutoff Valve · stuck · Aug 19, 2025 · N563NC · Boeing 7673BG
  > APU ECU SELF TEST SHOWS FAULT IGV ACT. PERFORMED APU ECU BITE TEST IAW AMM 49-61-05-742-045. NO FAULTS FOUND. BITE TEST PASSED. FOUND APU SHUTOFF VALVE STUCK IN CLOSED POSITION & RELEASED THE VALVE, SYSTEM CHECKED OK IAW AMM 49-11-00-802-002.
- [SDR CALA2025081407732](https://openairdocs.org/sdr/CALA2025081407732.md): Packing · leaking · Aug 12, 2025 · N76055 · Boeing 767424ER
  > ODOR IN CABIN DURING APU VISUAL INSPECTION, FOUND APU FCU LEAKING FUEL AT IGV ACTUATOR LINES ON FCU SIDE, R & R FUEL DRAIN, RETURN TUBE & TWO SUPPLY TUBE PACKINGS TO FCU IAW AMM 49-31-01-004-001-001. OPS & LEAK CHECKS PERFORMED. NO LEAKS NOTED. PERFORMED CHEC
- [SDR YENA2025081300830](https://openairdocs.org/sdr/YENA2025081300830.md): Pressure Switch · faulted · Aug 12, 2025 · N4076J · Airbus A321271NX
  > FLT#2288, JFK-AMS. (ETOPS) APU FUEL LO PRESS ON APU PAGE ( APU SYSTEM A321NEO ETOPS); REMOVED AND REPLACED APU FUEL PUMP PER AMM 28-22-51 OPS CHK GOOD MX-4 UPDATED PLACARD REMOVED.
- [SDR CALA2025080507288](https://openairdocs.org/sdr/CALA2025080507288.md): O-Ring · deteriorated · Aug 1, 2025 · N67058 · Boeing 767424ER
  > SIGNIFICANT FUEL SMELL THROUGHOUT CABIN WHILE DOING EXTERIOR WALKAROUND FOUND APU LEAKING FUEL. UPON FURTHER INSPECTION FOUND FUEL LINES GOING TO APU FUEL CONTROL LEAKING FUEL. REMOVED FUEL TUBES TO FUEL CONTROL UNIT. FOUND O-RINGS DETERIORATED. REPLACED O-RI
- [SDR YENA2025072100736](https://openairdocs.org/sdr/YENA2025072100736.md): Fcu · failed · Jul 18, 2025 · N4077J · Airbus A321271NX
  > FLT#1333, BOS-SFO. (ETOPS) APU FAILED TO START IAW A49-00-01A. 3 START ATTEMPTS MADE OAT - 48 FL 360 ( APU SYSTEM A321NEO ETOPS); REMOVED AND REPLACED APU FCU IRT AMM 49-32-11. OPS CHK SATISFACTORY. THIS CLEARS MDDR #588838. MCC NOTIFIED. MX-4 UPDATED. PLACAR
- [SDR HALA20250715214](https://openairdocs.org/sdr/HALA20250715214.md): Fuel Control · faulted · Jul 14, 2025 · N396HA · Airbus A330243
  > ETOPS - APU AUTO SHUTDOWN @ 80%. REMOVED & REPLACED APU FUEL CONT UNIT IAW AMM 49-32-51-000/400-801A. BLEED/LEAK /OPS CHECK GOOD. OK FOR SVC
- [SDR CALA2025070806313](https://openairdocs.org/sdr/CALA2025070806313.md): Fuel Sys · leaking · Jul 6, 2025 · N66056 · Boeing 767424ER
  > TOXIC FUMES IN CABIN. APU FUEL LEAK. RAN BOTH PACKS, INSPECTED THE CABIN AND PERFORMED INSPECTION IAW AMM 05-54-56. NO SIGN OF ODOR FUMES THROUGHOUT THE CABIN.
- [SDR DALA2025063004847](https://openairdocs.org/sdr/DALA2025063004847.md): O-Ring · leaking · Jun 29, 2025 · N841MH · Boeing 767432ER
  > CREW NOTED, FUEL SMELL IN CABIN. CORRECTIVE ACTION: FOUND FUEL LEAK AT APU INLET GUIDE VANE SURGE CONT. VALVE SUPPLY LINE. R+R O-RING ON LINE PER B767 AMM 49-31. R+R O-RINGS ON OTHER SUPPLY RETURN + DRAIN LINES AS PRECAUTIONARY MEASURES, PER B767 AMM 49-31. NO
- [SDR WX0A2025063032477](https://openairdocs.org/sdr/WX0A2025063032477.md): Fuel Control · leaking · Jun 27, 2025 · N279NV · Airbus A320214
  > (AIRCRAFT NOT GROUNDED) FLIGHT ATTENDANT REPORTS DIRTY SOCK SMELL AT 18,000 FEET IN DECENT. / TC 21-000-001 ACCOMPLISHED, FOUND AND CLEANED OFF OIL AROUND INLET OF APU PLENUM AND EDGE OF INLET SCREEN. RAN BOTH PACK INDIVIDUALLY WITH APU, ENG 1, AND ENG 2 SEPAR
- [SDR YENA2025062300646](https://openairdocs.org/sdr/YENA2025062300646.md): Fuel Control · failed · Jun 23, 2025 · N4080J · Airbus A321271NX
  > FLT#2220, LHR-JFK. (ETOPS) 'APU AUTO SHUTDOWN; REMOVED AND REPLACED APU FUEL CONTROL UNIT IAW AMM 49-32-11. OPS CHECK GOOD. NO LEAKS FOUND.'
- [SDR YENA2025061300604](https://openairdocs.org/sdr/YENA2025061300604.md): Fuel Filter · failed · Jun 12, 2025 · N4077J · Airbus A321271NX
  > FLT#2220, LHR-JFK. (ETOPS). 'APU FAILED AFTER COLD SOAK START (3) ATTEMPTS ( APU SYSTEM A321NEO ETOPS); FOLLOWED TSM 49-00-81-810-821-A. REPLACED FUEL FILTER IAW AMM 49-32-41 AND IGNITER PLUG IAW AMM 49-41-41. MDDR CLEAR. MX-4 UPDATED. PLACARD REMOVED. APU O
- [SDR HALA20250611176](https://openairdocs.org/sdr/HALA20250611176.md): Fuel Control · faulted · Jun 10, 2025 · N389HA · Airbus A330243
  > ETOPS - AFTER THE LANDING APU FAULT. REMOVED AND REPLACED FUEL CONTROL UNIT AT APU PERFORMED TEST ARE OK A/C IS OK TO CONTINUE IAW AMM 49-32-51-400-801-A
- [SDR YENA2025060400564](https://openairdocs.org/sdr/YENA2025060400564.md): Pump · illuminated · Jun 4, 2025 · N2165J · Airbus A321271NX
  > FLT#324, LAX-JFK. (ETOPS). APU CLASS II MESSAGE ( CLASS II MAINTENANCE MESSAGES DISPLAYED). REPLACED APU FUEL PUMP REF LP 4302345-1 MX-4 UPDATED, PLACARD REMOVED.
- [SDR UIEA2025052100663](https://openairdocs.org/sdr/UIEA2025052100663.md): Fuel Filter · not reported · May 21, 2025 · N664GT · Boeing 76731B
  > APU REQUIRES REPLACEMENT OF FUEL FILTER AT OR BEFORE 450 FLIGHT HOURS PER AMM 28-11-00-582-342. REMOVED FILTER IAW 767 AMM 49-31-04-004-001. FILTER GOOD TO INSTALL. INSTALL FILTER IAW 767 AMM 49-31-04-404-006. CONDUCT LEAK AND OPS CHECK, NO LEAKS OBSERVED & O
- [SDR HALA20250512130](https://openairdocs.org/sdr/HALA20250512130.md): Apu · shutdown · May 11, 2025 · N378HA · Airbus A330243
  > ETOPS - APU AUTO SHUTDOWN. BLED APU FUEL LINE AND REMOVED AND REPLACED FUEL TRIM PIPE ISOLATION VALVE ACTUATOR IAW AMM28-27-53-400-801-A PERFORMED TEST IS OK IAW AMM 49-00-00-860-801A A/C OK TO CONTINUE
- [SDR HALA20250421111](https://openairdocs.org/sdr/HALA20250421111.md): Pressure Switch · inoperative · Apr 20, 2025 · N380HA · Airbus A330243
  > ETOPS-AFTER LANDING DURING APU START APU AFT PUMP FAULT. REMOVED AND REPLACED APU LOW FUEL PRESSURE SWITCH PER AMM 49-31-000-801-A PERFORMED OPS CHECK GOOD LEAK CHECK GOOD BITE TEST GOOD OK TO CONTIUE SERVICE.
- [SDR HALA20250421110](https://openairdocs.org/sdr/HALA20250421110.md): Fuel Filter · faulted · Apr 18, 2025 · N213HA · Airbus A321271N
  > ETOPS-APU AUTO SHUTDOWN TWICE ON STARTUP. FOUND CLOGGED OIL FILTER GEN SCAV + LUBE FILTERS MSG. REMOVED AND REPLACED OIL FILTERS APU. OPS AND LEAK CHK GOOD REF AMM49-91-41. REMOVED AND REPLACED APU FUEL FILTER PER AMM 49-32-41-920-001-A. OPS CHECK GOOD NO LEAK
- [SDR YENA2025041600405](https://openairdocs.org/sdr/YENA2025041600405.md): Pump · failed · Apr 15, 2025 · N4062J · Airbus A321271NX
  > FLT#34, CDG-BOS. '(ETOPS) 'APU CLASS 2 MAINTENANCE MESSAGE AT SHUTDOWN'; REMOVED AND REPLACED APU FUEL FILTER IAW AMM 49-32-41 AND REMOVED AND REPLACED APU FUEL PUMP IAW AMM 28-22-51 OPS NORMAL AT THIS TIME.
- [SDR HALA20250407102](https://openairdocs.org/sdr/HALA20250407102.md): Pump · faulted · Apr 5, 2025 · N380HA · Airbus A330243
  > ETOPS - FUEL APU AFT PUMP FAULT CAME ON AFTER START UP. REMOVED AND REPLACED APU AFT FUEL PUMP PER AMM 28-22-52. OPS AND LEAK CHKS OK. OK FOR SVC. NO FAULTS NOTED

Next page: https://openairdocs.org/jasc/4930/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE jasc_code = '4930'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/4930/reports

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