# JASC 2800: Aircraft Fuel System

- Type: JASC system/component code (FAA)
- ATA chapter: 28 Fuel
- Title in the code table: AIRCRAFT FUEL SYSTEM
- Service difficulty reports: 740
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=27
- Page: https://openairdocs.org/jasc/2800

## What it covers

The units and components storing and delivering fuel to the engine. Includes the integral tank leak detection and sealing. Does not include the structure of integral, tip fuel tanks, fuel cell backing boards covered in the structures JASC Chapters 53 and 57, or the fuel flow rate sensing, transmitting, or indicating systems which are covered in JASC Chapter 73. Use this code for fuel system reports with insufficient information to file in a more specific JASC 2800 series code. This code is also used to report problems involving two or more aircraft fuel system JASC codes.

## Service difficulty reports (740, newest 50)

- [SDR EVCA20261006001](https://openairdocs.org/sdr/EVCA20261006001), Sep 30, 2026: Bell 206L. SWITCH. UNSERVICEABLE. RAW FUEL ODOR IN CABIN AND COCKPIT AREAS IN FLIGHT. (N133AE)
- [SDR YENA2026082600708](https://openairdocs.org/sdr/YENA2026082600708), Aug 26, 2026: Airbus A321271NX. SENSOR. ACTIVATED. FLT # 2261, BOS-MAD. (ETOPS) "ACT 2 HIGH LEVEL SENSOR SPARE ACTIVATED VIA SWITCH 72QJ2. OPEN (N4083J)
- [SDR YENA2026081900692](https://openairdocs.org/sdr/YENA2026081900692), Aug 19, 2026: Airbus A321271NX. FUEL SYS. WARNING MESSAGE. FLT 2261, BOS-MAD. (ETOPS) "FUEL AFT 2 ACT HI LVL ( HIGH LEVEL FUEL DETECTION SYSTEM ADDITIONAL CENTER TANK(S) ). (N4083J)
- [SDR CALA2026081918731](https://openairdocs.org/sdr/CALA2026081918731), Aug 18, 2026: Boeing 737924ER. CHECK VALVE. CONTAMINATED. TECH SUPPORT UPDATE ON A LEVEL C REPEAT CHRONIC NGS DEGRADED W/PRIOR HISTORY OF A 63 FAULT ASM FAULTING BUT LOW HIGH FLO (N69830)
- [SDR CALA2026080718362](https://openairdocs.org/sdr/CALA2026080718362), Aug 6, 2026: Airbus A319132. FUEL SYS. NO DISCREPANCY. FUEL BURN WAS DOUBLE WHAT IT SHOULD BE TAXIING TO THE RUNWAY. FAS SAID THEY SMELLED FUEL VAPORS IN THE CABIN WHILE SITTI (N893UA)
- [SDR YENA2026080500649](https://openairdocs.org/sdr/YENA2026080500649), Aug 3, 2026: Airbus A321271NX. WARNING MESSAGE. ILLUMINATED. FLT 1333, BOS-SFO. (ETOPS) FUEL, CLASS II MAINTENANCE MESSAGE. OPEN (N2151J)
- [SDR IPXA2026071799616](https://openairdocs.org/sdr/IPXA2026071799616), Jul 16, 2026: Boeing 76734AF. FUEL SYS. OUT OF BALANCE. FUEL BALANCED AT TAKEOFF,3 HOURS IN TO FLIGHT GOT FUEL CONFIG LIGHT-RAN QRH TO BALANCE FUEL.2 HOURS AFTER BALANCING FUEL (N328UP)
- [SDR YENA2026071300560](https://openairdocs.org/sdr/YENA2026071300560), Jul 11, 2026: Airbus A321271NX. WARNING MESSAGE. ILLUMINATED. FLT # 7, JFK-LHR. (ETOPS) "CLASS 2 FUEL MSG ( CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SYSTEM (N4083J)
- [SDR IPXA2026060148785](https://openairdocs.org/sdr/IPXA2026060148785), May 12, 2026: Boeing 75724APF. FUEL SYS. OUT OF BALANCE. **SUPPLEMENTAL SDR** FUEL IMBALANCE. REMOVED AND REPLACED FWD AND AFT ENGINE FUEL CROSS FEED VALVE BODIES REF. UPS B757  (N447UP)
- [SDR YENA2026050500449](https://openairdocs.org/sdr/YENA2026050500449), May 3, 2026: Airbus A321271NX. WARNING MESSAGE. FALSE ACTIVATION. FLT 1216, SFO-JFK. (ETOPS) FUEL CLASS II MESSAGE. CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SY (N2205J)
- [SDR SWAA2026050494327](https://openairdocs.org/sdr/SWAA2026050494327), Apr 29, 2026: Boeing 7378H4. CONTROL VALVE. LEAKING. NR 1 ENGINE FUEL LEAK AFTER PUSHBACK. CONTINUE AFTER 5 MINUTES. REMOVED AND REPLACED NR 1 ENGINE HPTACC IAW AMM 75-21-01 (N8540V)
- [SDR 2026FA0000127](https://openairdocs.org/sdr/2026FA0000127), Feb 16, 2026: Amd FALCON7X. FUEL SYS. CONTAMINATED. POLLUTION FOUND IN FUEL TANKS AFTER REMOVAL OF BOTH WINGS - FOLLOWING REMOVAL OF BOTH WINGS FOR REPLACEMENT OF LOWER PAN (N990HA)
- [SDR EVCA20260105001](https://openairdocs.org/sdr/EVCA20260105001), Jan 3, 2026: Bell 407. BRACKET. LEAKING. FUEL FUMES COMING OUT OF NURSE'S STATION SEAT BELT SLOT. REPAIRED BY REMOVING ROLLOVER ACCESS PANEL AND APPLIED SEALANT  (N481AE)
- [SDR DXTA2025120505944](https://openairdocs.org/sdr/DXTA2025120505944), Dec 2, 2025: Emb EMB505. PRESSURE SWITCH. FAULTED. PASSING FL215 "FUEL 1 FEED FAULT" WHITE CAS DISPLAYED. ON FUEL SYNOPTIC PAGE, DISPLAYED AMBER X OVER EJECTOR PUMP 1. REM (N374QS)
- [SDR VNAA202511210005](https://openairdocs.org/sdr/VNAA202511210005), Nov 21, 2025: Cndair CL6002D24. COUPLING. CORRODED. CORROSION ON FUEL DUCTS BWT LBL 53 AND RBL 53 AND FS 797.00 AT LEFT & RIGHT MLG WHEEL WELLS. CORROSION ON FUEL DUCTS BWT (N647NN)
- [SDR IPXA2025110755667](https://openairdocs.org/sdr/IPXA2025110755667), Nov 7, 2025: Boeing 75724APF. FUEL SYS. MALFUNCTIONED. APPEARS TO BE MIGRATING FROM THE RIGHT TO LEFT TANK. STARTED WITH 7.2 IN LEFT TANK 7.5 IN RIGHT, 0.3 IN CENTER. AT TOP O (N438UP)
- [SDR AALA202511063979](https://openairdocs.org/sdr/AALA202511063979), Nov 5, 2025: Boeing 737823. FUEL SYS. OUT OF BALANCE. AIRCRAFT WAS GROUNDED: ON CLIMB OUT LESS THAN 1000 LBS IN THE CENTER TANK, GOT A FUEL IMBALANCE WITH THE LEFT TANK LOW,  (N939AN)
- [SDR YENA2025102801063](https://openairdocs.org/sdr/YENA2025102801063), Oct 26, 2025: Airbus A321271NX. WARNING MESSAGE. ILLUMINATED. FLT 2233, BOS-SFO. (ETOPS) CLASS II MESSAGE FUEL. CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SY (N2169J)
- [SDR AALA202510305231](https://openairdocs.org/sdr/AALA202510305231), Oct 16, 2025: Boeing 737823. FUEL SYS. MALFUNCTIONED. AIRCRAFT WAS NOT GROUNDED: AFTER TAKEOFF RECEIVED FUEL IMBALANCE OF 1200 LBS. DIFFERENCE NOTED. COMPLIED WITH CONDITIONA (N930AN)
- [SDR AALA202510175231](https://openairdocs.org/sdr/AALA202510175231), Oct 16, 2025: Boeing 737823. FUEL SYS. OUT OF BALANCE. AIRCRAFT WAS NOT GROUNDED: AFTER TAKEOFF RECEIVED FUEL IMBALANCE OF 1200 LBS. DIFFERENCE NOTED. (OPEN). (N930AN)
- [SDR YENA2025101401030](https://openairdocs.org/sdr/YENA2025101401030), Oct 13, 2025: Airbus A321271NX. CONTROL UNIT. FAULTED. FLT 1333, BOS-SFO. (ETOPS) CLASS II MSG MAINTENANCE MSG FUEL AT GATE; (RESOLVED ON W/O: 1449175 TASKCARD: NR-00001) AVIA (N2165J)
- [SDR AALA202510138180](https://openairdocs.org/sdr/AALA202510138180), Oct 12, 2025: Boeing 737823. FUEL SYS. ABNORMAL. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING CLIMBOUT, RIGHT FUEL QUANTITY BEGAN DECREASING RAPIDLY.  (N951NN)
- [SDR IPXA2025101600639](https://openairdocs.org/sdr/IPXA2025101600639), Oct 8, 2025: Doug MD11F. FUEL SYS. OUT OF BALANCE. DURING CLIMB LEVEL 2 LAT FUEL UNBAL UN COMMANDED FUEL CROSS FEED FROM TANK THREE TO ENGINE 1 FUEL DECREASING IN TANK THR (N278UP)
- [SDR CALA2025100209532](https://openairdocs.org/sdr/CALA2025100209532), Oct 2, 2025: Boeing 737724. BATTERY PACK. EXPIRED. EMERGENCY FUEL SHUTOFF BATTERY REPLACE {B737-28-3-0190} - AS PER TASK CARD. TIME CHANGE. REMOVED AND REPLACED EMERGENCY  (N14731)
- [SDR QXEA2025090900302](https://openairdocs.org/sdr/QXEA2025090900302), Sep 8, 2025: Emb ERJ170200LR. FUEL FEED. FAULTED. FLIGHT 2007. AT LOW SPEED FUEL FEED (2) FAULT APPEARED LESS THAN 40% N1. TAKEOFF WAS ABORTED. REMOVED FROM SERVICE. INFO (N662QX)
- [SDR QXEA2025090900303](https://openairdocs.org/sdr/QXEA2025090900303), Sep 6, 2025: Emb ERJ170200LR. FUEL FEED. FAULTED. FLIGHT 2014. AS THRUST WAS APPLIED 40% N1 FUEL FEED FAULT (2) APPEARED ON EICAS. REJECTED TAKEOFF AND REMOVED FROM SERVI (N658QX)
- [SDR 2025FA0000600](https://openairdocs.org/sdr/2025FA0000600), Sep 1, 2025: Cessna 172S. SERVO. CONTAMINATED. FUEL SERVO FOUND TO HAVE CONTAMINATION. HEAVY THICK BLUE STAIN. (N23177)
- [SDR YENA2025082900899](https://openairdocs.org/sdr/YENA2025082900899), Aug 28, 2025: Airbus A321271NX. CONTROL UNIT. FAILED. FLT#842, DUB-BOS. (ETOPS) CLASS II MSG FUEL ( CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SYSTEM (N2169J)
- [SDR 2025FA0000601](https://openairdocs.org/sdr/2025FA0000601), Aug 25, 2025: Cessna 172S. SERVO. CONTAMINATED. MOMENTARY ENGINE ROUGHNESS/VIBRATION. AIRCRAFT HAD MOMENTARY POWER LOSS AFTER ADDING FULL POWER ON A TOUCH AND GO. ABORT (N25113)
- [SDR CALA2025082608142](https://openairdocs.org/sdr/CALA2025082608142), Aug 24, 2025: Boeing 737824. FUEL SYS. FAULTED. DURING FLT, CREW NOTICED FUEL BURN WAS NOT MATCHING INDICATED IN FLT PLAN REPORTS EXCESSIVE FUEL BURN AT CHECK POINTS. C (N14230)
- [SDR 2025FA0000599](https://openairdocs.org/sdr/2025FA0000599), Aug 22, 2025: Cessna 172S. SERVO. CONTAMINATED. FUEL SERVO FOUND TO HAVE ENGINE OIL CONTAMINATION. (N300KX)
- [SDR CALA2025081807897](https://openairdocs.org/sdr/CALA2025081807897), Aug 14, 2025: Boeing 737824. PUMP. NO DISCREPANCY. LOW PRESSURE LIGHT FOR THE FUEL PUMP LIGHT ON CENTER TANK, LEFT PUMP CREW DEBRIEF, 2 ATTEMPTS ON L CENTR PUMP NO GOOD. A (N26208)
- [SDR CALA2025081407716](https://openairdocs.org/sdr/CALA2025081407716), Aug 13, 2025: Boeing 737824. BATTERY. FAULTY. EMERGENCY FUEL SHUTOFF BATTERY OPS CHECK FAILED ON TEST FLIGHT PRE-FLIGHT CHECK. REMOVED AND REPLACED EMERGENCY FUEL SHU (N37253)
- [SDR 2025FA0000598](https://openairdocs.org/sdr/2025FA0000598), Aug 12, 2025: Cessna 172S. SERVO. CONTAMINATED. MOMENTARY ENGINE ROUGHNESS/VIBRATION/ LOSS OF POWER. PILOT REPORTED:"IN THE UPWIND ON FIRST LAP IN THE PATTERN ENGINE RP (N569RJ)
- [SDR 2025FA0000596](https://openairdocs.org/sdr/2025FA0000596), Aug 11, 2025: Cessna 172S. SERVO. CONTAMINATED. MOMENTARY ENGINE ROUGHNESS/VIBRATION WHILE IN THE PATTERN TURNING FROM CROSSWIND TO DOWNWIND, LOSS OF RPM. ENGINE INDICA (N24239)
- [SDR CALA2025081107551](https://openairdocs.org/sdr/CALA2025081107551), Aug 11, 2025: Boeing 737824. FUEL SYS. OUT OF BALANCE. AT FL320 NOTICED SIGIFICANT FUEL IMBALANCE RT TANK DROPPED 900LBS WITHIN 15 MINS TOTAL DROPED 1700LBS , CAPT REPORTED FU (N33289)
- [SDR 2025FA0000597](https://openairdocs.org/sdr/2025FA0000597), Aug 7, 2025: Cessna 172S. SERVO. CONTAMINATED. MOMENTARY ENGINE ROUGHNESS/VIBRATION/ LOSS OF POWER. PILOT REPORTED:"ON TAKEOFF OUT OF LVK AT 600 AGL THE ENGINE LOST TO (N1668C)
- [SDR NACA2025080600002](https://openairdocs.org/sdr/NACA2025080600002), Aug 6, 2025: Boeing 76733A. CONTROL PANEL. FAILED. FUEL SYSTEM CONTROL PANEL HAS BROKEN KORRY LIGHT. REMOVED AND REPLACED FUEL MANAGEMENT PANEL REF 767-300 AMM 28-22-17 OP (N567NC)
- [SDR AALA202507250856](https://openairdocs.org/sdr/AALA202507250856), Jul 17, 2025: Boeing 737823. FUEL PANEL. FAULTED. AIRCRAFT WAS NOT GROUNDED: IN FLIGHT RIGHT AFTER FUEL LOW PRESSURE LIGHT ILLUMINATED STEADY FOR SEVERAL MINUTES AND DID  (N913NN)
- [SDR DALA2025063004850](https://openairdocs.org/sdr/DALA2025063004850), Jun 25, 2025: Boeing 717200. FUEL SYS. LEAKING. SHIP 9584 PER ERA 621136-14AD WORKING CARD 5720-01103-01B. FUEL LEAK FOUND DURING INSPECTION OF RH WING AFT LOWER SKIN D (N986AT)
- [SDR 2025F00145](https://openairdocs.org/sdr/2025F00145), Jun 20, 2025: Raythn 390. WARNING LIGHT. MULTIPLE FAIL. THROUGHOUT THE FLIGHT, OBSERVED THAT THE FUEL KEPT MOVING AROUND WITHOUT US MOVING THE FUEL TRANSFER SWITCH. WE WOULD EV (N145J)
- [SDR IPXA2025070183508](https://openairdocs.org/sdr/IPXA2025070183508), Jun 18, 2025: Doug MD11F. FUEL SYS. INOPERATIVE. **SUPPLEMENTAL SDR** DURING FLIGHT AT FL390 WE GOT A LEVEL 1 TANK 2 PUMPS OFF. FUEL SYSTEM WAS IN MANUAL MODE PER MEL 28 (N251UP)
- [SDR AALA202506238865](https://openairdocs.org/sdr/AALA202506238865), Jun 17, 2025: Boeing 737823. RELAY. FAILED. AIRCRAFT WAS NOT GROUNDED: AFTER ENGINE STARTED WITH BOTH CENTER PUMP FUEL SWITCHES IN THE ON POSITION, THE RIGHT CENTER (N976AN)
- [SDR AALA202506239921](https://openairdocs.org/sdr/AALA202506239921), Jun 17, 2025: Boeing 737823. RELAY. FAILED. AIRCRAFT WAS NOT GROUNDED: AFTER ENGINE STARTED WITH BOTH CENTER PUMP FUEL SWITCHES IN THE ON POSITION, THE RIGHT CENTER (N976AN)
- [SDR F3LA202506090246](https://openairdocs.org/sdr/F3LA202506090246), Jun 8, 2025: Airbus A320251N. COMPUTER. FAULTED. AC WAS PULLED OOS FOR THIS EVENT. REFERENCE LP493674 ITEM 1, ALMOST 3000LB FUEL IMBALANCE ON A 2.5 HOUR FLIGHT. RIGHT SI (N309FR)
- [SDR HALA20250525149](https://openairdocs.org/sdr/HALA20250525149), May 23, 2025: Airbus A330343. MASTER SWITCH. MALFUNCTIONED. ETOPS - FUEL ENG 1 + 2 LP VALVE FAULT. FUEL SDP FUEL LINES PARTIALLY CLOSING& AMBER. REPLACED ENG 2 MASTER SWITCH SLAVE  (N4663K)
- [SDR DXTA2025050603378](https://openairdocs.org/sdr/DXTA2025050603378), May 7, 2025: Cessna 560XL. SWITCH. OUT OF POSITION. FUEL CROSSFEED HARDWARE: CROSSFEEDING LEFT TO RIGHT, BOTH FUEL BOOST L AND R ILLUMINATED ALONG WITH BOTH LO FUEL PRESS L (N576QS)
- [SDR DXTA2025050203276](https://openairdocs.org/sdr/DXTA2025050203276), Apr 29, 2025: Cessna 680SOV. CONTROL VALVE. FAULTED. RIGHT ENGINE ENGINE COMPRESSOR STALL: AT APPROX. 42000FT IN THE DECENT, A COMPRESSOR STALL WAS FELT FOR ABOUT 5-10 SECON (N372QS)
- [SDR YENA2025042500436](https://openairdocs.org/sdr/YENA2025042500436), Apr 25, 2025: Airbus A321271NX. WARNING MESSAGE. FALSE ACTIVATION. FLT#7, JFK-LHR. (ETOPS). FUEL CLASS II MX MSG ON ECAM ( CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF E (N4048J)
- [SDR AALA202504022621](https://openairdocs.org/sdr/AALA202504022621), Apr 1, 2025: Boeing 737823. UNKNOWN. UNKNOWN. AIRCRAFT WAS GROUNDED: FUEL IS CONTINUOUSLY GOING INTO THE CENTER TANK WITH CENTER PUMPS OFF. FUEL WILL NOT BURN BELOW 0 (N881NN)

All 740: https://openairdocs.org/jasc/2800/reports.md

## Airworthiness concern sheets (4)

- [AIR720-2025-01-S-2800-ACS](https://openairdocs.org/acs/AIR720-2025-01-S-2800-ACS): Fuel Primer Pump. Issued Mar 19, 2025
- [AIR750-2019-03-S-2800-ACS](https://openairdocs.org/acs/AIR750-2019-03-S-2800-ACS): Fuel Selector. Issued Aug 5, 2019
- [AIR760-2009-06-S-2800-ACS](https://openairdocs.org/acs/AIR760-2009-06-S-2800-ACS): Wire Harness/Connector(S). Issued Jun 5, 2009
- [AIR760-2007-01-S-2800-ACS](https://openairdocs.org/acs/AIR760-2007-01-S-2800-ACS): Fuel Shutoff Valve Control. Issued Jan 29, 2007

## Other codes in chapter 28

- [JASC 2810](https://openairdocs.org/jasc/2810): Fuel Storage (3,517 reports)
- [JASC 2820](https://openairdocs.org/jasc/2820): Aircraft Fuel Distribution System (3,627 reports)
- [JASC 2821](https://openairdocs.org/jasc/2821): Aircraft Fuel Filter/Strainer (366 reports)
- [JASC 2822](https://openairdocs.org/jasc/2822): Fuel Boost Pump (2,745 reports)
- [JASC 2823](https://openairdocs.org/jasc/2823): Fuel Selector/Shut-Off Valve (423 reports)
- [JASC 2824](https://openairdocs.org/jasc/2824): Fuel Transfer Valve (572 reports)
- [JASC 2830](https://openairdocs.org/jasc/2830): Fuel Dump System (125 reports)
- [JASC 2840](https://openairdocs.org/jasc/2840): Fuel Indicating System (1,863 reports)
- [JASC 2841](https://openairdocs.org/jasc/2841): Fuel Quantity Indicator (1,152 reports)
- [JASC 2842](https://openairdocs.org/jasc/2842): Fuel Quantity Sensor (544 reports)
- [JASC 2843](https://openairdocs.org/jasc/2843): Fuel Temperature Indicator (24 reports)
- [JASC 2844](https://openairdocs.org/jasc/2844): Fuel Pressure Indicator (272 reports)
- [JASC 2897](https://openairdocs.org/jasc/2897): Fuel System Wiring (656 reports)

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