# JASC 7321: Fuel Control/Turbine Engines

- Type: JASC system/component code (FAA)
- ATA chapter: 73 Engine Fuel and Control
- Title in the code table: FUEL CONTROL/TURBINE ENGINES
- Service difficulty reports: 2,878
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=62
- Page: https://openairdocs.org/jasc/7321

## What it covers

The components which electronically control metered fuel flow under infinite temperature, altitude, and barometric pressure conditions. This code is also to be used for turbine engines which utilize electronic and non-electronic fuel controls. Typical parts are computer, amplifier, sync box, CIT sensor, etc.

## Service difficulty reports (2,878, newest 50)

- [SDR SWAA2026081411846](https://openairdocs.org/sdr/SWAA2026081411846), Aug 10, 2026: Boeing 7377CT. ENGINE. AUTO SHUTDOWN. OTS - NR 2 ENGINE AUTO SHUTDOWN WITH ENG FAIL LIGHT ILLUMINATED DURING TAXI. CW EEC BITE WITH NO RECENT OR FAULT HISTORY (N7821L)
- [SDR X2ZR202607284051](https://openairdocs.org/sdr/X2ZR202607284051), Jul 28, 2026: DRIVE SHAFT. WORN. FUEL CONTROL UNIT P/N 897801-2 S/N: 2336073 WAS RECEIVED FOR REPORTED LOW FUEL FLOW DURING ENGINE OPERATION. THE FUEL CO
- [SDR SWAA2026072962174](https://openairdocs.org/sdr/SWAA2026072962174), Jul 25, 2026: Boeing 7378. PRESSURE SYSTEM. FAULTED. NR 2 ENGINE SHUTDOWN, NOT START, WHILE STARTING. PS3 FAULT. REMOVED AND REPLACED IAW AMM 73-21-11-401. (N8903H)
- [SDR G1IA20260702112](https://openairdocs.org/sdr/G1IA20260702112), Jul 2, 2026: Beech C90A. FCU. FAULTED. DURING CRUISE FLIGHT, LEFT ENGINE STARTED TO SURGE THEN LOST PARTIAL POWER. DECLARED EMERGENCY WITH ATC AND PROCEEDED DI (N692W)
- [SDR DXTA2026060408300](https://openairdocs.org/sdr/DXTA2026060408300), May 31, 2026: Bombdr BD7001A11. FMU. FAILED. WHILE DESCENDING, AT APROX FL340 THE CREW OBSERVED 2 LARGE BANGS SOUNDED LIKE COMPRESSOR STALLS. FLT ATTENDANT NOTED BAN (N100QS)
- [SDR QXEA2026060200131](https://openairdocs.org/sdr/QXEA2026060200131), May 31, 2026: Emb ERJ170200LR. FMU. MALFUNCTIONED. ENG 2 SHORT DISPATCH, EICAS MESSAGE POPULATED ON ROLLOUT AND TAXI AFTER LANDING. PLACED ON MEL 73-21-01B. MEL CLEARED BY (N661QX)
- [SDR X2ZR2026072804022](https://openairdocs.org/sdr/X2ZR2026072804022), May 19, 2026: DRIVE SHAFT. WORN. FUEL CONTROL UNIT P/N 897801-2 S/N 2173786 WAS INSPECTED IN ACCORDANCE WITH WOODWARD INSPECTION CRITERIA CONTAINED IN WG
- [SDR DEMA202605270001](https://openairdocs.org/sdr/DEMA202605270001), May 19, 2026: Cessna 208B. FUEL CONTROL. UNCONTROLLABLE. LOSS OF ENGINE THROTTLE RESPONSE FOLLOWED BY AN UNCOMMANDED ENGINE SHUTDOWN ON THE TAXIWAY PRIOR TO TAKEOFF. THE AIRCRAF (N774FE)
- [SDR 2026FA0000322](https://openairdocs.org/sdr/2026FA0000322), May 7, 2026: MANIFOLD. MISCONFIGURED. DURING A VISUAL INSPECTION BY A CUSTOMER FOLLOWING AN IN-FLIGHT EVENT. - REPLACEMENT OF THE MANIFOLD PERFORMED ON PSS. 
- [SDR 2026FA0000334](https://openairdocs.org/sdr/2026FA0000334), May 4, 2026: Cessna 208B. BELLOWS. FAULTED. PILOT NOTICED AFTER DESCENT TO FLIGHT LEVEL 1500 FEET, LEVELING OFF AND ADDING POWER, TORQUE INDICATION DROPPED 200 AND  (N347KA)
- [SDR 2026FA0000500](https://openairdocs.org/sdr/2026FA0000500), May 2, 2026: Cessna 680SOV. FUEL CONTROL. FAILED. LEFT ENGINE ROLL BACK AT FL410, CO-PILOT ENGAGED FUEL BOOST PUMP AND DIVERTED TO KICT. TROUBLESHOT DOWN TO FAULTY FUEL C (N799MJ)
- [SDR 2026F00095](https://openairdocs.org/sdr/2026F00095), Apr 30, 2026: Bell 407. HMU. FAULTED. PILOT GOT RESTART FAIL LIGHT ON CAUTION PANEL. TESTING UNIT REVEALED ERRATIC READINGS OF THE FUEL METERING VALVE POTENTI (N670RL)
- [SDR I5PA2026033075709](https://openairdocs.org/sdr/I5PA2026033075709), Mar 30, 2026: Boeing 75729J. FUEL CONTROL. FAULTED. FLIGHT MGE301, RIGHT ENGINE HUNG START. FOUND FCU/EEC EPCS MESSAGE, REPLACED FCU PER AMM. (N757QM)
- [SDR DALA2026013000727](https://openairdocs.org/sdr/DALA2026013000727), Jan 29, 2026: Boeing 757232. FUEL CONTROL. FAULTED. DURING LEFT ENGINE START, LEFT ENGINE EXPERIENCED A TAIL PIPE FIRE. FLIGHT CREW FOLLOWED QRH. ARFF RESPONDED AND SPRAYED (N650DL)
- [SDR ASAA2026011462871](https://openairdocs.org/sdr/ASAA2026011462871), Jan 14, 2026: Airbus A330243. EEC. FAULTED. AIR TURNBACK, ENG 1 FADEC OVHT. COMPLETED ECAM ACTION SHUTDOWN NR 1 ENGINE. GROUNDED - YES. [EUPB COOLING AIR DUCTS /EEC (N382HA)
- [SDR SWI2026F00086](https://openairdocs.org/sdr/SWI2026F00086), Jan 13, 2026: Cndair CL6002B19. FUEL CONTROL. BROKEN. NUMBER 1 ENGINE STUCK AT 70% N1 WITH THRUST LEVER AT IDLE. ENGINE 1 INDICATED MCT DURING THIS TIME. NO CAUTION MESSAGE,  (N464SW)
- [SDR QXEA2026011800011](https://openairdocs.org/sdr/QXEA2026011800011), Jan 13, 2026: Emb ERJ170200LR. FADEC. MALFUNCTIONED. FLIGHT 2088. ENG 1, NO DISPATCH AND ENG 1 FADEC FAULT APPEARED UPON EXITING RUNWAY AFTER LANDING. REMOVED FROM SERVICE.  (N647QX)
- [SDR CALA2026010812807](https://openairdocs.org/sdr/CALA2026010812807), Jan 6, 2026: Boeing 75733N. GOVERNOR. FAULTED. RIGHT ENGINE WOULD NOT GO TO TAKEOFF THRUST WITH AUTO THROTTLE ENGAGED, REMOVED NR 2 ENGINE (PHASE 2) FUEL FLOW GOVERNOR (N77871)
- [SDR DXTA2025120205928](https://openairdocs.org/sdr/DXTA2025120205928), Dec 1, 2025: Emb EMB505. FUEL CONTROL. FAILED. FUEL FEED 1 FAULT & FUEL FEED 2 FAULT MESSAGES DISPLAYED IN FLT, ACCOMPANIED WITH YELLOW XS OVER MOTIVE FLOW PUMPS ON FU (N331QS)
- [SDR SWAA2025120241853](https://openairdocs.org/sdr/SWAA2025120241853), Nov 29, 2025: Boeing 7377H4. HMU. FAILED. AFTER EXITING RUNWAY (AFTER LANDING) NR 1 ENGINE FAILED. FAIL ON ENGINE INSTRUMENTS. NR 1 GEN OFF LINE AT SAME TIME. NR  (N217JC)
- [SDR 2026FA0000052](https://openairdocs.org/sdr/2026FA0000052), Nov 23, 2025: Piper J3C65. SPARK PLUG. CRACKED. LEVELED AT 4000FT, ENGINE POWER WAS REDUCED TO 80% WITH FUEL CONSUMPTION LEANED TO 17GAL/HR. AFTER BEING SET IN THIS CRU (N77541)
- [SDR DALA2025110608081](https://openairdocs.org/sdr/DALA2025110608081), Nov 5, 2025: Airbus A320212. ECU. FAULTED. UNCOMMAND ENGINE SHUT DOWN, RESET STARTING IAW MC ENG N1 HUNG. REMOVED AND REPLACED NR 1 ENG ECU IAW AMM 73-21, FADEC BI (N359NW)
- [SDR YENA2025102101048](https://openairdocs.org/sdr/YENA2025102101048), Oct 20, 2025: Airbus A321231. FCU. LEAKING. FLT#734, SFO-BOS. "OIL FUME EVENT RECOGNIZED BY PILOTS, INTERMITTENT THROUGHOUT DESCENT FROM 10,000 FT TO THE GROUND. UN (N969JT)
- [SDR AALA202508222533](https://openairdocs.org/sdr/AALA202508222533), Aug 21, 2025: Boeing 737823. HMU. FAILED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: AT 37K FEET OVER CUBA, NUMBER 1 ENGINE ROLLED BACK TO 40-50% N1 (N805NN)
- [SDR 2025F00193](https://openairdocs.org/sdr/2025F00193), Aug 13, 2025: Cirrus SF50. FUEL CONTROL. FAILED. RECEIVED A RED CAS MESSAGE "FADEC NO DISPATCH" AND "FUEL DEGRAD 58". FUEL CONTROL UNIT WAS REPLACED WITH NEW AND WILLIAM (N71NP)
- [SDR X2ZR202607283587](https://openairdocs.org/sdr/X2ZR202607283587), Jul 28, 2025: DRIVE SHAFT. WORN. FUEL CONTROL UNIT P/N 897801-2, S/N: 2122481 WAS RECEIVED FOR PRECAUTIONARY SPLINE INSPECTIONS DUE TO CUSTOMER REPORTED 
- [SDR X2ZR403508](https://openairdocs.org/sdr/X2ZR403508), Jun 27, 2025: DRIVE SHAFT. WORN. FUEL CONTROL UNIT P/N 897801-2 S/N: 2481460, WAS RECEIVED FOR REPORTED LOW FUEL FLOW DURING ENGINE OPERATION. THE FUEL C
- [SDR X2ZR2026072903548](https://openairdocs.org/sdr/X2ZR2026072903548), Jun 27, 2025: DRIVE SHAFT. WORN. FUEL CONTROL UNIT WAS RECEIVED FOR REPORTED LOW FUEL FLOW DURING ENGINE OPERATION. THE FUEL CONTROL UNIT WAS INSPECTED I
- [SDR 2025FA0000413](https://openairdocs.org/sdr/2025FA0000413), Jun 20, 2025: Diamon DA40NG. ECU. FAULTED. PILOT REPORT: COMING BACK IN ON LIFT ARRIVAL, FELT ENGINE SHUDDER FOLLOWED BY DUAL ECU FAILURE. ECU A KEPT COMING ON AND (N670L)
- [SDR AALA202506208702](https://openairdocs.org/sdr/AALA202506208702), Jun 19, 2025: Boeing 7378. EEC. FAULTY. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING CLIMB, "REVERSER LIMITED" LIGHT ILLUMINATED FOR THE NUMB (N334TL)
- [SDR SWAA2025061680519](https://openairdocs.org/sdr/SWAA2025061680519), Jun 10, 2025: Boeing 7377H4. HMU. FAILED. ENG FAIL MSG ON #1 ENG INDICATIONS ON LOWER MFD<[01] INFORMATIONAL ONLY- PER THE 3 WAY PHONE CALL WITH THE CAPT & DISPAT (N919WN)
- [SDR HALA20250527152](https://openairdocs.org/sdr/HALA20250527152), May 26, 2025: Airbus A330243. ENGINE. FAULTED. ETOPS - BLOCK TURNBACK DUE TO ENG FAULTS. REPLACED FMU (ENG #1) PER AMM 73-21-52-000-802-A & 73-21-52-400-802A. OPS + LE (N378HA)
- [SDR QXEA2025050900174](https://openairdocs.org/sdr/QXEA2025050900174), May 6, 2025: Emb ERJ170200LR. FADEC. FAULTED. ENG 2 SHORT DISPATCH ADVISORY ON EICAS. REMOVED FROM SERVICE. INTERROGATED CMC FOUND RELATED SHORT DISPATCH F/C:73217422 (N635QX)
- [SDR QXEA2025050900173](https://openairdocs.org/sdr/QXEA2025050900173), May 2, 2025: Emb ERJ170200LR. FADEC. FAULTED. REPLACED #2 ENGINE FADEC DUE TO ECMP REQUEST (ECMP-4144). (N643QX)
- [SDR FDEA202504280684](https://openairdocs.org/sdr/FDEA202504280684), Apr 28, 2025: Boeing 757222. FUEL CONTROL. FAULTED. FOLLOWING RIGHT ENGINE START, FLIGHT CREW NOTICED YELLOW FLASH ON RIGHT SIDE OF AIRCRAFT AS WELL AS LOSS OF N1 INDICATIO (N792FD)
- [SDR QXEA2025042200123](https://openairdocs.org/sdr/QXEA2025042200123), Apr 22, 2025: Emb ERJ170200LR. FADEC. MALFUNCTIONED. HORTLY AFTER THE START OF DESCENT THE EGINE #1 N1 AND ITT INDICATIONS STARTED BLINKING ON AND OFF BETWEEN GREEN VALUES A (N620QX)
- [SDR 2025F00079](https://openairdocs.org/sdr/2025F00079), Mar 25, 2025: Boeing 7378. FUEL CONTROL. MALFUNCTIONED. ENGINE CONTORL ALT LIGHT STAY IN ON LH SIDE (N759AM)
- [SDR DALA2025032702258](https://openairdocs.org/sdr/DALA2025032702258), Mar 24, 2025: Boeing 737832. FUEL CONTROL. MALFUNCTIONED. SHIP 3769 -DIV- TO PDX DUE TO RIGHT ENGINE SUSPECTED STALL. CORRECTIVE ACTION: BSI SHOWS NO DAMAGE TO COMPRESSOR. REPLAC (N3769L)
- [SDR 2025FA0000069](https://openairdocs.org/sdr/2025FA0000069), Jan 29, 2025: Cessna 172S. FUEL CONTROL. FAILED. DEFECTIVE PRECISION FUEL SERVO CAUSED LOSS OF POWER AND ENGINE SHUT DOWN IN FLIGHT. AIRCRAFT ABLE TO LAND WITH NO DAMAGE (N864SP)
- [SDR 2024F00268](https://openairdocs.org/sdr/2024F00268), Oct 31, 2024: Boeing 73736N. CONTROL SYSTEM. FAILED. CANCELED FLIGHT 646 CBB/VVI DUE TO ENGINE #2 SLOW ACCELERATION IN DIFFERENTE PHASES OF FLIGHT AND HOT STARTS. CORRECTIVE (N836CC)
- [SDR VQMA99AG092424R0](https://openairdocs.org/sdr/VQMA99AG092424R0), Sep 24, 2024: Cessna 525B. FUEL CONTROL. LOW PRESSURE. ON TUESDAY, SEPTEMBER 24TH 2024, CESSNA CITATION 525B (CJ3), REGISTRATION NUMBER N99AG, SERIAL NUMBER 525B-0258 EXPERIEN (N99AG)
- [SDR CALA2024092600695](https://openairdocs.org/sdr/CALA2024092600695), Sep 23, 2024: Boeing 75733N. GOVERNOR. FAULTY. RT ENG REDUCED PWR EPR LIMITED TO 1.44 CREW REPORTS FUEL FLOW INDICATION LOWER ON RH ENGINE REMOVED AND REPLACED #2 ENGI (N57869)
- [SDR YENA2024081201115](https://openairdocs.org/sdr/YENA2024081201115), Aug 11, 2024: Airbus A321271NX. FUEL CONTROL. FAULTED. FLT#2123, JFK-LAX. 'FUEL CTR R XFR FAULT ON CLIMB OUT; NO EXISTING FAULTS DISPLAYED. PERFORM FLSS BITE & FQIS TEST . NO  (N4074J)
- [SDR ABXA2024052196](https://openairdocs.org/sdr/ABXA2024052196), May 21, 2024: Boeing 767231. FUEL CONTROL. FAULTED. L ENG EPR, N1 EGT FLUCTUATED IN FLIGHT. SEE VIDEO SENT MECH/MTC AC RETURED TO FIELD AND GROUNDED BY MAINTENANCE DETERMIN (N650GT)
- [SDR DALA2024042604724](https://openairdocs.org/sdr/DALA2024042604724), Apr 25, 2024: Boeing 757251. FCU. FAULTED. SHIP 5647 -IFSD- RIGHT ENGINE SHUT DOWN ON APPROACH, EMERGENCY DECLARED. CORRECTIVE ACTION: REPLACED FUEL CONTROL UNIT & (N547US)
- [SDR 2024FA0000273](https://openairdocs.org/sdr/2024FA0000273), Apr 1, 2024: Snias AS350B2. FUEL CONTROL. MALFUNCTIONED. AFTER DEPARTURE PILOT EXPERIENCED SLIGHT NG FLUCTUATION AND SLIGHT YAW MOTION. PILOT RETURNED FOR LANDING. DURING TROUBL (N711JH)
- [SDR DALA2024032803905](https://openairdocs.org/sdr/DALA2024032803905), Mar 27, 2024: Boeing 757232. FUEL CONTROL. ABNORMAL. SHIP 6702 - ATB- FLIGHT RETURNED TO ATL DUE TO LEFT ENGINE FUEL VALVE MESSAGE. CORRECTIVE ACTION: PERFORMED WIRING CHECK (N6702)
- [SDR DALA2024031203242](https://openairdocs.org/sdr/DALA2024031203242), Mar 11, 2024: Boeing 737932ER. FUEL CONTROL. INOPERATIVE. (LOG 5021672) TAXIING OUT AFTER NORMAL ENGINE START WENT TO TRANSFER POWER AND LEFT ENGINE UN-COMMANDED SHUT DOWN. REMOV (N813DN)
- [SDR VE7A2024012504006](https://openairdocs.org/sdr/VE7A2024012504006), Jan 22, 2024: Urocop EC135P2. EEC. FAILED. #2 FADEC FAIL INFLIGHT DURING INFLIGHT POWER CHECK. IMC. 5000'MSL 60 TQ. CPDS INDICATIONS: FADEC MINR, FADEC FAIL, FLI D (N376PH)
- [SDR QXEA2024011600010](https://openairdocs.org/sdr/QXEA2024011600010), Jan 11, 2024: Emb ERJ170200LR. FMU. LEAKING. #1 ENGINE FUEL IS LEAKING FROM FMU. R&R #1 ENG FMU REF E175 AMM 73-21-03-400/000-801-A. OPS CHECK GOOD. LEAK CHECK GOOD. (N634QX)

All 2,878: https://openairdocs.org/jasc/7321/reports.md

## Other codes in chapter 73

- [JASC 7300](https://openairdocs.org/jasc/7300): Engine Fuel and Control (465 reports)
- [JASC 7310](https://openairdocs.org/jasc/7310): Engine Fuel Distribution (1,981 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 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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