# JASC 7310: Engine Fuel Distribution

- Type: JASC system/component code (FAA)
- ATA chapter: 73 Engine Fuel and Control
- Title in the code table: ENGINE FUEL DISTRIBUTION
- Service difficulty reports: 1,981
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=62
- Page: https://openairdocs.org/jasc/7310

## What it covers

For components and parts of the engine fuel system from the main quick disconnect fitting or airframe fuel system strainer to the fuel control unit. Does not include the controlling or metering aspects filed in JASC code 7322, or the primer systems in JASC code 2820 on reciprocating engines, or the engine fuel pumps, fuel heater, cooler, divider, or injector nozzle (turbine and piston engines). Typical parts are supply lines, hoses, fuel, filters on turbine engines, shutoff and solenoid valves, etc.

## Service difficulty reports (1,981, newest 50)

- [SDR SWAA2026100765165](https://openairdocs.org/sdr/SWAA2026100765165), Oct 6, 2026: Boeing 7378H4. PRESSURE SWITCH. FAULTED. NR 1 ENG FUEL FILTER BYPASS LIGHT ILLUMINATED, DRAINED FUYEL FILTER NO CONTAMINATION NOTED. FILTER TO BE REPLACED IN 1 C (N8631A)
- [SDR SWAA2026100735774](https://openairdocs.org/sdr/SWAA2026100735774), Oct 6, 2026: Boeing 7378H4. FILTER. WARNING MESSAGE. NR 1 ENG FUEL FILTER BYPASS LIGHT ILLUMINATED. DRAINED FUEL FILTER NO CONTAMINATION NOTED. FILTER TO BE REPLACED IN 1 CY (N8631A)
- [SDR AALA202610103443](https://openairdocs.org/sdr/AALA202610103443), Oct 5, 2026: Airbus A319112. PRESSURE SWITCH. FAULT MESSAGE. AIRCRAFT WAS GROUNDED: ENGINE 2 FUEL FILTER CLOG MESSAGE - MAINTENANCE REPLACED THE ENGINE 2 FUEL FILTER DIFFERENTIAL PR (N700UW)
- [SDR SWAA2026081943593](https://openairdocs.org/sdr/SWAA2026081943593), Aug 15, 2026: Boeing 7377H4. PACKING. LEAKING. OTS - NR 1 ENGINE FLUID LEAK FROM FAN COWLS, COMPLIED WITH E.A. M-21-173-01075 PERFORMED NR 1 ENG. IDLE LEAK CHECKED IAW (N212WN)
- [SDR 2026FA0000637](https://openairdocs.org/sdr/2026FA0000637), Aug 13, 2026: Piper PA32RT300. SERVO. FAULTED. PILOT REPORTED THE FUEL PRESSURE PEGGED MAX PRESSURE CAUSING THE GAUGE TO BECOME INOP. IT WAS REPLACED AND AGAIN THE GAU (N3041B)
- [SDR YENA2026080300641](https://openairdocs.org/sdr/YENA2026080300641), Aug 1, 2026: Airbus A321271NX. FUEL FILTER. NOT REPORTED. FLT 842, DUB-JFK. (ETOPS), REF EC A7323031-01 ENG NR 2 FUEL FILTER INSPECTION AND REPLACEMENT NEEDED, R & R ENG NR 2 FUE (N2199J)
- [SDR DALA2026071304130](https://openairdocs.org/sdr/DALA2026071304130), Jul 10, 2026: Boeing 717200. O-RING. LEAKING. NR 1 ENGINE FUEL LEAK ON WALK AROUND STRONG FUEL ODOR ON APU AIR. R & R O-RING IAW AIPC 73-12-05-22. (8831910) (AIRCRAFT (N906AT)
- [SDR SCNA20260708285](https://openairdocs.org/sdr/SCNA20260708285), Jul 8, 2026: Boeing 7378BK. PRESSURE SWITCH. BYPASSING. LOG 834743 - NR 2 FILTER BYPASS LIGHT ILLUMINATED. PERFORMED FIM TASK 73-05 TASK801. NO FAULTS FOUND. REPLACED NR 2 ENG. (N822SY)
- [SDR SWAA2026061612734](https://openairdocs.org/sdr/SWAA2026061612734), Jun 14, 2026: Boeing 7377H4. VALVE. INOPERATIVE. NO FUEL FLOW TO NR 2 ENGINE AFTER PUSHBACK. CYCLED NR 2 SPAR VALVE BREAKER AND PERFORMED TWO ENGINE STARTS. OPS CHECKED  (N459WN)
- [SDR AALA202605209972](https://openairdocs.org/sdr/AALA202605209972), May 15, 2026: Boeing 737823. FUEL FILTER. CLOGGED. AIRCRAFT WAS NOT GROUNDED: FUEL FILTER BYPASS CAUTION LIGHT AFTER TAKE OFF. LIGHT IS INTERMITTENT. REMOVED AND REPLACE N (N901NN)
- [SDR AALA202604214379](https://openairdocs.org/sdr/AALA202604214379), Apr 17, 2026: Boeing 737823. PRESSURE SWITCH. FAILED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: RIGHT ENGINE FUEL FILTER BYPASS. LIGHT ILLUMINATED SHORTLY  (N973NN)
- [SDR AALA202604215499](https://openairdocs.org/sdr/AALA202604215499), Apr 17, 2026: Boeing 737823. FUEL FILTER. CLOGGED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: RIGHT ENGINE FUEL FILTER BYPASS. LIGHT ILLUMINATED SHORTLY  (N973NN)
- [SDR AALA202604075355](https://openairdocs.org/sdr/AALA202604075355), Apr 6, 2026: Boeing 737823. FUEL FILTER. CLOGGED. AIRCRAFT WAS GROUNDED: FUEL FILTER BYPASS LIGHT ON NUMBER 2 ENGINE CAME ON AFTER BOTH ENGINES STARTED AND STABILIZED. RE (N826NN)
- [SDR AALA202602096255](https://openairdocs.org/sdr/AALA202602096255), Feb 8, 2026: Boeing 737823. FUEL FILTER. CLOGGED. AIRCRAFT WAS GROUNDED: ENGINE NUMBER 2 FUEL FILTER BYPASS LIGHT ILLUMINATED AFTER TAKEOFF. REMOVED AND REPLACED NR 2 ENG (N948AN)
- [SDR 2026FA0000098](https://openairdocs.org/sdr/2026FA0000098), Feb 6, 2026: Piper PA28181. FUEL LINE. BROKEN. PILOT REPORTED POWER LOSS AND ENGINE ROUGHNESS. UPON INSPECTION, FOUND #1 INJECTOR LINE BROKEN AT FERRULE AT INJECTOR NO (N776N)
- [SDR DALA2025120208791](https://openairdocs.org/sdr/DALA2025120208791), Dec 1, 2025: Airbus A330941. FUEL SYS. LEAKING. DIVERSION TO DTW DUE TO RIGHT ENGINE FUEL LEAK. RIGHT ENGINE WAS SHUTDOWN. CORRECTIVE ACTION: REPLACED HMU PER AMM 73-21 (N411DX)
- [SDR YENA2025120201168](https://openairdocs.org/sdr/YENA2025120201168), Nov 28, 2025: Airbus A321271NX. FUEL HEATER. FAILED. FLT 1224, LAX-JFK. (ETOPS), NR 1 ENG HEAT SYS DEGRADED AFTER LANDING. HEAT SYS DEGRAD CAUTIONS ON ECAM EWD. REF L/P 4526 (N2151J)
- [SDR AALA202510315548](https://openairdocs.org/sdr/AALA202510315548), Oct 30, 2025: Boeing 737823. FUEL FILTER. CLOGGED. AIRCRAFT WAS NOT GROUNDED: LEFT FUEL FILTER BYPASS LIGHT CAME ON AFTER TAKEOFF. REMOVED AND REPLACED LEFT ENGINE FUEL FI (N960NN)
- [SDR AALA202510278954](https://openairdocs.org/sdr/AALA202510278954), Oct 25, 2025: Boeing 737823. FUEL FILTER. CLOGGED. AIRCRAFT WAS NOT GROUNDED: NUMBER 1 FUEL FILTER BYPASS LIGHT ILLUMINATED SHORTLY AFTER TAKEOFF. REMOVE AND REPLACED THE  (N937AN)
- [SDR DALA2025102707838](https://openairdocs.org/sdr/DALA2025102707838), Oct 22, 2025: Boeing 737932ER. TRANSMITTER. LEAKING. (LOG 7403834) FAIRLY STRONG RAW FUEL ODOR IN THE FLIGHT DECK UPON SHUTDOWN OF #1 ENGINE. FOUND FUEL FLOW TRANSMITTER LEA (N811DZ)
- [SDR AALA202510212775](https://openairdocs.org/sdr/AALA202510212775), Oct 20, 2025: Boeing 737823. FUEL SYS. LEAKING. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING CRUISE, SUSPECTED FUEL LEAK ON ENGINE NUMBER 1. VERIFIED (N910AN)
- [SDR HALA20251020324](https://openairdocs.org/sdr/HALA20251020324), Oct 19, 2025: Airbus A330243. FUEL FILTER. CLOGGED. ETOPS - APPROX 2 HOURS INTO FLIGHT, FL 360 ECAM ENG 1 FUEL FILTER CLOG MAINTENANCE NOTIFIED. REMOVED AND REPLACED ENG 1  (N385HA)
- [SDR KCSA2025100954](https://openairdocs.org/sdr/KCSA2025100954), Oct 7, 2025: Boeing 747481F. MANIFOLD. CRACKED. NR 3 ENG FAILED, STABLE/NO VIBRATIONS, N1-26.9, OIL PSI 9 PSI 1 MIN THEN ABOVE 10 PSI. N2-26.2, TIME OF FAIL 2243 IN THE (N767CK)
- [SDR 2025FA0000688](https://openairdocs.org/sdr/2025FA0000688), Oct 7, 2025: Bolkms BK117D3. MODULATING VALVE. OUT OF ADJUST. DURING ENGINE START WITH A PATIENT ON BOARD THE NR 1 ENGINE WOULD NOT START. AFTER 2 FAILED ATTEMPTS MX WAS CONTACTED. F (N540SF)
- [SDR YENA2025100300996](https://openairdocs.org/sdr/YENA2025100300996), Oct 5, 2025: Airbus A321271NX. CONTROLLER. FAILED. FLT#1926, LGW-BOS. (ETOPS) "AFTER LANDING GOT ENG 2 HEAT SYSTEM DEGRADED CAUTION MSG; REMOVED AND REPLACED IFPC IAW AMM  (N2169J)
- [SDR AALA202509173276](https://openairdocs.org/sdr/AALA202509173276), Sep 16, 2025: Boeing 737823. FUEL FILTER. CLOGGED. AIRCRAFT WAS GROUNDED: LEFT FUEL FILTER BYPASS LIGHT ILLUMINATED FOR APPROX 4 MINUTES. REMOVED AND REPLACED FUEL FILTER  (N879NN)
- [SDR HALA20250904272](https://openairdocs.org/sdr/HALA20250904272), Sep 3, 2025: Airbus A330243. FUEL FILTER. CLOGGED. ETOPS - ENG 1 FUEL FILTER CLOG MESSAGE DISPLAYED IN CRUISE. REPLACED ENG 1 LP FUEL FILTER PER AMM 73-11-41. NO FINDINGS, (N388HA)
- [SDR RJEF20250901001](https://openairdocs.org/sdr/RJEF20250901001), Aug 29, 2025: Airbus A320251N. TRANSDUCER. FAULTED. ON ENGINE 1: PERFORMED BORESCOPE OF BOOSTER BLADES IAW AMM 72-21-00-290-802-A NO DISCREPANCIES FOUND. REPLACED LEFT VSV  (N788AV)
- [SDR 3EJA2025090401](https://openairdocs.org/sdr/3EJA2025090401), Aug 26, 2025: Cessna 560XL. FUEL FILTER. NOT REPORTED. LH FUEL BYPASS FILTER CAUTION LIGHT ILLUMINATED. CHECKED L/H FUEL FILTER FOR UNUSUAL OR CONTAMINATION NONE FOUND REPLACE (N872JS)
- [SDR 2025FA0000643](https://openairdocs.org/sdr/2025FA0000643), Aug 22, 2025: Cessna 172S. SERVO. CONTAMINATED. AIRCRAFT DIED IN RUNUP AREA TWICE. ONCE ON RAMP, ONCE IN RUNUP. FAILED IDLE CHECK. FUEL SERVO WAS REMOVED AND FOUND TO B (N25194)
- [SDR 2025FA0000644](https://openairdocs.org/sdr/2025FA0000644), Aug 21, 2025: Cessna 172S. SERVO. CONTAMINATED. AIRCRAFT HAD MOMENTARY POWER LOSS/VIBRATION AFTER ADDING FULL POWER ON A TOUCH AND GO. ABORTED TAKEOFF. TOOK AIRCRAFT TO (N25113)
- [SDR SWAA2025081100402](https://openairdocs.org/sdr/SWAA2025081100402), Aug 5, 2025: Boeing 7377H4. PUMP. FAILED. NR 1 ENGINE FAILED UPON EXITING THE RUNWAY. SHUTDOWN ENG IAW QRH. R&R HMU;FUEL PUMP PACKAGE REF 773-11-00; R&R MW03102 H (N238WN)
- [SDR HALA20250715215](https://openairdocs.org/sdr/HALA20250715215), Jul 12, 2025: Airbus A330343. VALVE. FAULTED. ETOPS - FUEL ENG 2 LP VALVE FAULT. REMOVED & REPLACED LP FUEL VALVE ACTUATOR IAW A330 AMM 28-24-51-000/400-803-A. PERFOM (N5843K)
- [SDR DALA2025080105758](https://openairdocs.org/sdr/DALA2025080105758), Jul 6, 2025: Airbus A350941. O-RING. LEAKING. CREW DIVERTED TO ANC DUE TO REPORTED FUEL LEAK SUSPECTED ECAM MESSAGE WITH 8,000LB BELOW PLANNED BURN. REPLACED O-RINGS  (N574DZ)
- [SDR SWAA2025070788684](https://openairdocs.org/sdr/SWAA2025070788684), Jul 5, 2025: Boeing 7377H4. FUEL FILTER. FAULTED. FLYING APPROACH INTO SJC AND AT APPROX 2500 FT AUTOPILOT KICKED. OFF #2 ENG ROLLBACK WITH ENG FAIL INDICATION. NORMAL AP (N491WN)
- [SDR AALA202506235746](https://openairdocs.org/sdr/AALA202506235746), Jun 22, 2025: Airbus A321211. PRESSURE SWITCH. FAULTED. AIRCRAFT WAS NOT GROUNDED: ENGINE 2 FUEL FILTER CLOG MESSAGE ASSOCIATED WITH MEL 73-09 CONTINUOUSLY CYCLES ON AND OFF PR (N150UW)
- [SDR AALA202506230269](https://openairdocs.org/sdr/AALA202506230269), Jun 20, 2025: Airbus A321211. PRESSURE SWITCH. FAULTED. AIRCRAFT WAS NOT GROUNDED: ENGINE 2 FUEL FILTER CLOG ECAM AFTER TAKEOFF, CLOG REMAINED ON UNTIL CRUISE AND CLEARED. MANI (N150UW)
- [SDR HALA20250530156](https://openairdocs.org/sdr/HALA20250530156), May 29, 2025: Airbus A330243. FUEL LINE. CRACKED. ETOPS - DURING WALKAROUND, FOUND FUEL LINE CRACKED ON #1 ENG. REMOVED HP FUEL LINE PER AMM 75-33-51. REPLACED HP FUEL LI (N385HA)
- [SDR UIEA2025052900707](https://openairdocs.org/sdr/UIEA2025052900707), May 29, 2025: Boeing 76731B. FUEL FILTER. CONTAMINATED. R ENG FUEL FILT EICAS MESSAGE ILLUMINATED BRIEFLY TWICE ON CLIMB OUT.(<P>ITEM 1: FOUND CONTAMINATION. REMOVED AND REPLAC (N664GT)
- [SDR HALA20250527153](https://openairdocs.org/sdr/HALA20250527153), May 25, 2025: Airbus A330343. FUEL FILTER. CLOGGED. ETOPS - ON DEPARTURE .ENG2 FUEL FILTER CLOG COME ON ON ECAM.THEN WENT AWAY , THEN ON LANDING CAME ON BACK ON. REMOVED AN (N5879K)
- [SDR SWAA2025052071814](https://openairdocs.org/sdr/SWAA2025052071814), May 16, 2025: Boeing 7378. LRU. LEAKING. ON ARRIVAL (APPROX 14K FT) #1 FUEL TANK IMBAL. AT GATE LARGE FUEL LEAK DISCOVERED FROM #1ENG<[01] C/W AMM 71-71-00 #1 EN (N8896L)
- [SDR HALA20250512131](https://openairdocs.org/sdr/HALA20250512131), May 11, 2025: Airbus A330243. FUEL LINE. LEAKING. ETOPS - DURING WALK AROUND, FOUND FUEL LEAK COMING FROM #2 ENG STATOR VANE CONTROLLER FUEL LINE. PN: FK12075, LOW PRESSU (N396HA)
- [SDR CALA2025051304647](https://openairdocs.org/sdr/CALA2025051304647), May 10, 2025: Boeing 757224. GOVERNOR. FAULTY. LEFT ENG FAILED TO GET 1.60 EPR ON TAKEOFF ONLY REACHED 1.30 REJ ECTED AT 80KTSPERFORMED FIM 77-11 FAULT TREE 805. REMOV (N19141)
- [SDR SWAA2025050868690](https://openairdocs.org/sdr/SWAA2025050868690), May 7, 2025: Boeing 7377H4. SWITCH. FAULTY. NR 2 ENG FUEL FILTER BYPASS LIGHT ILLUMINATED IN FLIGHT<[01] REMOVED AND REPLACED DIFFERENTIAL PSI SWITCH PER AMM 73-34- (N938WN)
- [SDR SWAA2025050868723](https://openairdocs.org/sdr/SWAA2025050868723), May 7, 2025: Boeing 7377H4. FILTER. FAULTY. NR 2 ENG FUEL FILTER BYPASS LIGHT ILLUMINATED IN FLIGHT. REMOVED AND REPLACED DIFFERENTIAL PSI SWITCH PER AMM 73-34-01 A (N938WN)
- [SDR AALA202504147437](https://openairdocs.org/sdr/AALA202504147437), Apr 13, 2025: Airbus A321231. FUEL FILTER. CLOGGED. AIRCRAFT WAS NOT GROUNDED: ENGINE 2 FUEL CLOG INDICATION DURING CLIMB AND CONDITION SELF CORRECTED AFTER 20 MINUTES. MAI (N150NN)
- [SDR HALA20250414106](https://openairdocs.org/sdr/HALA20250414106), Apr 11, 2025: Airbus A330243. FILTER. CLOGGED. ETOPS-ENG 1 FUEL FILTER FAULT CLOG.PERFORMED TSM 73-21-79-810-803A. REMOVED AND REPLACED FUEL FILTER PER AMM 73-11-41. N (N385HA)
- [SDR NACA2025031000007](https://openairdocs.org/sdr/NACA2025031000007), Mar 10, 2025: Boeing 767323. PRESSURE SWITCH. NO TEST. FOUND FUEL PRESSURE SWITCH TEST FAIL AT ENGINE 2. REPLACED SWITCH FOR ENGINE 2. (N321CM)
- [SDR NACA2025031000005](https://openairdocs.org/sdr/NACA2025031000005), Mar 10, 2025: Boeing 767323. PRESSURE SWITCH. NO TEST. FOUND FUEL PRESSURE SWITCH TEST FAIL AT ENGINE 2. (N321CM)
- [SDR AALA202503034279](https://openairdocs.org/sdr/AALA202503034279), Mar 1, 2025: Airbus A321211. FILTER. FAULTED. AIRCRAFT WAS GROUNDED: ENGINE 1 FUEL FILTER CLOGGED ECAM AFTER TAKE OFF WENT OUT AFTER ONE MINUTE. MAINTNANCE REPLACED F (N193UW)

All 1,981: https://openairdocs.org/jasc/7310/reports.md

## Other codes in chapter 73

- [JASC 7300](https://openairdocs.org/jasc/7300): Engine Fuel and Control (465 reports)
- [JASC 7311](https://openairdocs.org/jasc/7311): Engine Fuel/Oil Cooler (226 reports)
- [JASC 7312](https://openairdocs.org/jasc/7312): Fuel Heater (254 reports)
- [JASC 7313](https://openairdocs.org/jasc/7313): Fuel Injector Nozzle (529 reports)
- [JASC 7314](https://openairdocs.org/jasc/7314): Engine Fuel Pump (1,734 reports)
- [JASC 7320](https://openairdocs.org/jasc/7320): Fuel Controlling System (4,390 reports)
- [JASC 7321](https://openairdocs.org/jasc/7321): Fuel Control/Turbine Engines (2,878 reports)
- [JASC 7322](https://openairdocs.org/jasc/7322): Fuel Control/Reciprocating Engines (1,272 reports)
- [JASC 7323](https://openairdocs.org/jasc/7323): Turbine Governor (544 reports)
- [JASC 7324](https://openairdocs.org/jasc/7324): Fuel Divider (74 reports)
- [JASC 7330](https://openairdocs.org/jasc/7330): Engine Fuel Indicating System (407 reports)
- [JASC 7331](https://openairdocs.org/jasc/7331): Fuel Flow Indicating (197 reports)
- [JASC 7332](https://openairdocs.org/jasc/7332): Fuel Pressure Indicating (158 reports)
- [JASC 7333](https://openairdocs.org/jasc/7333): Fuel Flow Sensor (80 reports)
- [JASC 7334](https://openairdocs.org/jasc/7334): Fuel Pressure Sensor (198 reports)
- [JASC 7397](https://openairdocs.org/jasc/7397): Engine Fuel System Wiring (532 reports)

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