# JASC 7322: Fuel Control/Reciprocating Engines

- Type: JASC system/component code (FAA)
- ATA chapter: 73 Engine Fuel and Control
- Title in the code table: FUEL CONTROL/RECEIPROCATING ENGINES
- Service difficulty reports: 1,272
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=63
- Page: https://openairdocs.org/jasc/7322

## What it covers

The component which meters fuel/air mixture for engine combustion on reciprocating engines. This code is to be used for fuel injection systems, carburetor systems or other mechanical fuel metering devices reciprocating engine. The typical parts are carburetor, fuel injector, float, diaphragm, bellows, shaft, venturi, control arm, throttle body, servo, discharge tube, bushing, needle, seat, accelerator pump, pin, bearings, etc.

## Service difficulty reports (1,272, newest 50)

- [SDR QR9R2026092200001](https://openairdocs.org/sdr/QR9R2026092200001), Sep 22, 2026: Bolkms BK117C2. FUEL CONTROL. FLUCTUATES. CONTINUAL NEEDLE SPLIT GREATER THAN 15% CAUSING VAR NR CAUTION TO COME ON DURING HOVERING FLIGHT. A TEST FLIGHT EVAL FOU
- [SDR 3EJA202608200026](https://openairdocs.org/sdr/3EJA202608200026), Jul 23, 2026: Cessna 560XL. FCU. FAILED. NOTICED RT ENG NOT MAKING POWER. R & R RT FUEL CONTROL UNIT. (N810JS)
- [SDR 2026FA0000604](https://openairdocs.org/sdr/2026FA0000604), Jul 2, 2026: Cessna 172N. CARBURETOR. FAULTED. AFTER ONLY 360.49 TACH HOURS IN SERVICE FOUND THROTTLE GETTING STUCK BEFORE FULL THROTTLE STOP. SUSPECTED ACCELERATOR PU (N172KJ)
- [SDR 2025FA0000794](https://openairdocs.org/sdr/2025FA0000794), Nov 12, 2025: Piper PA24180. CARBURETOR. FAULTED. UPON LANDING, ENGINE RPM ROLLED BACK. UNRESPONSIVE TO ANY ENGINE CONTROL INPUTS. ENGINE QUIT ON THE RUNWAY. TOWER HAD TH (N5937P)
- [SDR 8WWA2026F00002](https://openairdocs.org/sdr/8WWA2026F00002), Aug 31, 2025: Stbros SD3*. CONTROL CABLE. CHAFED. DURING INSPECTIONS WE HAVE DISCOVERED A TREND WHERE THE TELEFLEX CABLES THAT CONNECT TO THE FCU POWER CONTROL ARE SHOWIN (N725WW)
- [SDR QR9R2025082200001](https://openairdocs.org/sdr/QR9R2025082200001), Aug 22, 2025: Bolkms BK117C2. FUEL CONTROL. FLUCTUATES. VARNAR FAILED IN FLIGHT. ON DOWNWIND TRAFFIC PATTERN, VARNAR FAILED TO MANUAL MODE WITH SPLIT UP TO 4FLI DIFFERENCE OBSE
- [SDR CALA2025072106798](https://openairdocs.org/sdr/CALA2025072106798), Jul 18, 2025: Airbus A320232. PROBE. FAULTED. REJECTD T/O 50-60 KIAS DUE TO SPLIT POWER SETTING W/ NO ECAM ITEM UPDATED WITH CURRENT P2T2 SENSOR. ENG #2 REPLACED AT E (N484UA)
- [SDR QR9R2025031100006](https://openairdocs.org/sdr/QR9R2025031100006), Mar 11, 2025: Bolkms BK117C2. FUEL CONTROL. FLUCTUATES. VARTOMS INOP DURING HOVER TAXI. A TEST FLIGHT EVAL DETECTED AFTER 1.6 HR OF FLIGHT, FLI NEEDLES STARTED TO SPLIT AND VAR
- [SDR 2025FA0000096](https://openairdocs.org/sdr/2025FA0000096), Feb 8, 2025: Cessna 172M. THROTTLE CONTROL. LOOSE. ACFT RETURNED TO BASE DUE TO VIBRATION AT 300FT ON 2/8/25. PILOT REPORTED ENGINE STARTED SHAKING SIGNIFICANTLY. HE PULLE (N73454)
- [SDR 2025FA0000204](https://openairdocs.org/sdr/2025FA0000204), Nov 15, 2024: Piper PA28181. CARBURETOR. FAULTED. FARGO, ND (FAR): N113SW, P28A, FAR-FAR, DECLARED AN EMERGENCY DUE TO A ROUGH RUNNING ENGINE. ACFT RETURNED TO FAR ARPT,  (N113SW)
- [SDR 2024FA0000812](https://openairdocs.org/sdr/2024FA0000812), Nov 1, 2024: Piper PA28181. FUEL CONTROL. FOULED. THE ENGINE QUITS AT IDLE AND APPEARS TO BE DUE TO AN OVERLY RICH SETTING. THIS LATEST FAILURE THE FUEL SERVO WAS FOUND O (N274M)
- [SDR 2024FA0000778](https://openairdocs.org/sdr/2024FA0000778), Sep 17, 2024: Piper PA28181. SERVO. DEFECTIVE. NOTED THAT THE FUEL INJECTOR SERVO WOULD NOT HOLD AN IDLE MIXTURE SETTING. MIXTURE SETTING WOULD NEED TO BE ADJUSTED FRE (N409CA)
- [SDR EVCA01122023](https://openairdocs.org/sdr/EVCA01122023), Jan 6, 2023: Bell 206L3. FUEL CONTROL. LEAKING. FUEL SMELL IN CABIN UPON TAKE OFF. FOUND FUEL SEEP AT FUEL CONTROL UNIT. (N132AE)
- [SDR HALA2022122300313](https://openairdocs.org/sdr/HALA2022122300313), Dec 22, 2022: Airbus A330243. FMU. FAULTED. ETOPS - ENG 1 CTL SYS FAULT. ENG 1 SLOW RESPONSE ON CLIMB OUT AND AFTER LANDING. TROUBLE SHOOT PER TSM 73-21-72-810-899- (N370HA)
- [SDR CVGA20221025001](https://openairdocs.org/sdr/CVGA20221025001), Oct 21, 2022: Cessna 525B. FUEL CONTROL. FAILED. RH #2 ENGINE FLAME OUT IN FLIGHT OAT: 21C, SAT: 19C, SPEED:275 KIAS, WX: VFR CLEAR CLOUDS FLIGHT CONDITIONS DURING DESCE (N286N)
- [SDR CALA2022100702742](https://openairdocs.org/sdr/CALA2022100702742), Oct 7, 2022: Airbus A320232. EIU. INOPERATIVE. ENG 1 FUEL VALVE FAULT ON CLIMBOUT UPDATED PICTURES UNABLE TO POWER UP FADEC 1 ON CHANNEL A OR B ALSO LOWER ECAM SWAPPED (N429UA)
- [SDR HALA2022100600268](https://openairdocs.org/sdr/HALA2022100600268), Oct 6, 2022: Airbus A300*. NONE. NONE. BTB- ECAM MESSAGE ENG 2 CTL SYS FAULT. TURNOVER FROM DAYSHIFT- PREVIOUS T/S FOUND VCVC FAULT. REMOVED AND REPLACED VARIA (N399HA)
- [SDR CHIR202210130001](https://openairdocs.org/sdr/CHIR202210130001), Sep 28, 2022: BEARING. SPALLED. DURING PRE-TEST IT WAS FOUND THAT 70/110° NF POSITION TEST WAS EXTREMELY OUT OF LIMITS. MECHANICS SUGGESTED THAT THIS WA
- [SDR 2022FA0000551](https://openairdocs.org/sdr/2022FA0000551), Sep 23, 2022: Piper PA18150. CARBURETOR. MISOVERHAULED. DURING DESCENT AND THROTTLE REDUCTION INTO KBZN, THIS AIRCRAFT EXPERIENCED A POWER LOSS DUE TO A HYDRAULIC LOCKING OF TH (N8576)
- [SDR AALA202209081644](https://openairdocs.org/sdr/AALA202209081644), Sep 5, 2022: Boeing 777. EEC. INOPERATIVE. AIRCRAFT WAS GROUNDED: RIGHT THRUST REVERSER APPEARED ON ENGINE INDICATING AND CREW ALERTING SYSTEM 3 TIMES IN THE AIR,  (N717AN)
- [SDR CVGA20220830001](https://openairdocs.org/sdr/CVGA20220830001), Aug 25, 2022: Cessna 525B. FUEL CONTROL. FAULTED. RIGHT ENGINE FAILURE ON DESCENT. UNRESPONSIVE TO THROTTLE MOVEMENT AS N1 & N2 DECREASED. OIL PRESSURE IN RED. PERFORMED  (N444AM)
- [SDR GTIA2022082236603](https://openairdocs.org/sdr/GTIA2022082236603), Aug 21, 2022: Airbus A319132. NONE. FAULT MESSAGE. ENG 1 EPR MODE FAULT IN FLT-REMOVED AND REPLACED #1 ENG P2/T2 SENSOR IAW AMM 73-22-48. PERFORMED ENG POWER ASSURANCE RUN (N504NK)
- [SDR CALA2022081002009](https://openairdocs.org/sdr/CALA2022081002009), Aug 10, 2022: Airbus A320232. SENSOR. FAULTY. **RTBL** LOW SPEED RTO ENGINE 1 ACCELERATION ABNORMAL TROUBLESHOOT NO FAILURE MESSAGES ON MAINTENANCE POST FLIGHT REPORT (N466UA)
- [SDR 2022FA0000422](https://openairdocs.org/sdr/2022FA0000422), Jul 18, 2022: Piper PA28180. CARBURETOR. INACCURATE. FACTORY OVERHAULED ENGINE INSTALLED IN AIRFRAME. PERFORMANCE WAS NORMAL, BUT NOTED THAT CARBURETOR WAS DIFFICULT TO SET  (N7933N)
- [SDR HALA2022070800126](https://openairdocs.org/sdr/HALA2022070800126), Jul 7, 2022: Airbus A330243. NONE. NONE. ETOPS - ENG 1 CTL SYS FAULT. ASSOCIATED WITH: ENG 1 HP FUEL // LAST LEG REPORT SHOWED "OPU E1-4072KS". PERFORMED BITE OF (N382HA)
- [SDR N6WA2022053002](https://openairdocs.org/sdr/N6WA2022053002), May 29, 2022: Cndair CL600*. ENGINE. FAILED. LEFT ENGINE SHOWS NO N1 DURING START.PERFORMED TWO ENGINE STARTS IAW CRJ 550 AMM 71-00-00. OPS CHECK GOOD. NO L ENG DEGR (N541GJ)
- [SDR HALA2022052300104](https://openairdocs.org/sdr/HALA2022052300104), May 22, 2022: Boeing 717200. NONE. NONE. ATB- ENG L FADEC ALTERNATE (AIRBORNE) WOULD NOT RESET // PERFORMED FIM 71-00 TASK 812. NO FAULTS FOUND. RAN #1 ENG TWICE (N480HA)
- [SDR ECPR2022051900001](https://openairdocs.org/sdr/ECPR2022051900001), May 19, 2022: Piper PA28161. CARBURETOR. FAULTY. FOLLOWING A POST-INSPECTION ENGINE RUNUP, FUEL WAS FOUND LEAKING FROM THE CARBURETOR VENTURI. IT IS SUSPECTED THAT AN UN (N4445K)
- [SDR CHIRNC#24635](https://openairdocs.org/sdr/CHIRNC%2324635), Apr 20, 2022: Skrsky CH34C. BEARING. WORN. FCU UNIT RECEIVED FOR WARRANTY INSP/ TEST. CUSTOMER FAULT: N1/NG OVERSPEED “107%” OF THE #1 ENGINE. ENGINE ASSY INSTALLE
- [SDR ECPR2022042100001](https://openairdocs.org/sdr/ECPR2022042100001), Apr 13, 2022: Piper PA28161. CARBURETOR. FAULTY. DURING DOWNWIND FOR LANDING WITH A SIMULATED POWER LOSS, AN ACTUAL PARTIAL POWER LOSS OCCURRED. PILOT CONTINUED APPROACH (N159ND)
- [SDR 2022FA0000183](https://openairdocs.org/sdr/2022FA0000183), Apr 1, 2022: Piper PA28181. CARBURETOR. LOOSE. WHERE THE 2 HALVES MEET AND MATE. THE SCREWS HOLDING THEM TOGETHER WERE STILL LOCKED INTO POSITION BY SPECIAL DEVICES. B (N2231Y)
- [SDR HALA2022031100074](https://openairdocs.org/sdr/HALA2022031100074), Mar 10, 2022: Airbus A330243. NONE. NONE. ETOPS - ENG2 CTL SYS FAULT - PER MOC NO-GO ODI PREVENTION TEST TO BE COMPLETED FOR #2 ENGINE // REMOVED AND REPLACED VSV (N385HA)
- [SDR FDEA202203030409](https://openairdocs.org/sdr/FDEA202203030409), Mar 3, 2022: Doug MD11F. BRACKET. BROKEN. ENG 3 FADEC MAINT LEVEL 1 ALERT, FOLLOWED BY ENG 3 RPM LOW LEVEL 2 ALERT, FOLLOWED BY GEN 3 OFF ALERT. ATTEMPT RE START, (N603FE)
- [SDR HALA2022030200060](https://openairdocs.org/sdr/HALA2022030200060), Mar 1, 2022: Boeing 717200. NONE. NONE. AIR TURN BACK - SELECT FADEC ALTN ALTERT ILLUMINATES IN-FLIGHT #1 ENGINE // REMOVED=REPLACED #1 EEC PER AMM 73-21-01. FU (N491HA)
- [SDR HALA2022022500057](https://openairdocs.org/sdr/HALA2022022500057), Feb 24, 2022: Boeing 717200. NONE. NONE. BTB - ON TAXI OUT “ENG L SYS FAIL” ALERT ILLUMINATED, ACFT RETURN TO THE GATE // PERFORM DUAL ENG RUN AT IDLE PER FIM 73 (N476HA)
- [SDR HALA2022021800050](https://openairdocs.org/sdr/HALA2022021800050), Feb 17, 2022: Airbus A330243. NONE. NONE. BTB ECAM ENG 2 START CNL FAULT AFTER #2 ENG START // REPLACED VSV CONTROL UNIT IAW AMM 75-33-51 OPS AND LEAK CK 2228794  (N360HA)
- [SDR HALA2022021700049](https://openairdocs.org/sdr/HALA2022021700049), Feb 16, 2022: Boeing 717200. NONE. NONE. ATB - ENG 2 SYS FAIL ALERT MESSAGE DURING CLIMBOUT // PER FIM 73-21 TASK 864 STEP E.5. NEED TO REPLACE EEC 18053 2/16/22 (N475HA)
- [SDR HALA2022020700041](https://openairdocs.org/sdr/HALA2022020700041), Feb 6, 2022: Airbus A330243. NONE. NONE. AFTER TAKE-OFF ECAM ENG 1 CTL SYS FAULT // REMOVED AND REPLACED VSV CONTROLLER #1 ENG IAW AMM 75-33-51 REQUIRES LEAK CK  (N392HA)
- [SDR VNAA202202071111](https://openairdocs.org/sdr/VNAA202202071111), Feb 3, 2022: Cndair CL6002C10. CABLE. FAULT MESSAGE. EMERGENCY DUE TO AN ENGINE WARNING LIGHT FOLLOWED BY A KNOCKING NOISE IN THE ENGINE. AIRCRAFT REQUESTED TO RETURN TO CLT (N507AE)
- [SDR HALA2022020300037](https://openairdocs.org/sdr/HALA2022020300037), Feb 2, 2022: Airbus A330243. NONE. NONE. AFTER SHUTDOWN AT PARKING ECAM ENG 2 CTL SYS FAULT // INTERROGATED EEC CHAN A/B LAST LEG REPORT. NO FAULTS NOTED. ALSO P (N373HA)
- [SDR HALA2022020100036](https://openairdocs.org/sdr/HALA2022020100036), Jan 31, 2022: Airbus A330243. NONE. NONE. NEED TO REPLACE EEC DUE TO MCC REQUEST (MULTIPLE MINOR FAULTS) #1 ENGINE // REMOVED AND REPLACED #1 ENGINE EEC PER AMM 7 (N393HA)
- [SDR HALA2022010300004](https://openairdocs.org/sdr/HALA2022010300004), Jan 1, 2022: Airbus A330243. CONTROLLER. INOPERATIVE. ATB - AFTER T/O ENG 2 CTL SYS FAULT AIR TURN BACK AVOID RAPID THR CHANGES // PERFORMED WIRE CHECKS PER TSM 75-33-00-810- (N393HA)
- [SDR HALA2021122700199](https://openairdocs.org/sdr/HALA2021122700199), Dec 23, 2021: Airbus A330243. CONTROLLER. INOPERATIVE. ATB - ENGINE - UPON CLIMBOUT ENG 2 CTL SYS FAULT OCCURRED // N2 OVERSPEED FOUND ON PFR, T/S PER TSM 77-11-00-810-856. NO (N370HA)
- [SDR GTIA2021122336185](https://openairdocs.org/sdr/GTIA2021122336185), Dec 23, 2021: Airbus A300*. UNKNOWN. NONE. ENG 2 EPR MODE FAULT INFLIGHT N1 DEGRADED MODE-REF TSM 73-22-00-818-820-A. INSPECTION & WIRE CHECKS C/W. NO DEFECTS NOTE (N521NK)
- [SDR R3WA202112300006](https://openairdocs.org/sdr/R3WA202112300006), Dec 22, 2021: Cessna 560XL. FUEL BOWL. DIRTY. AT CRUISE FL410 PF NOTICED WHILE SCANNING THE INSTRUMENTS A MASTER WARNING AND CAUTION LIGHTS ILLUMINATED AND IMMEDIATEL (N692TX)
- [SDR 2021FA0000413](https://openairdocs.org/sdr/2021FA0000413), Dec 17, 2021: Piper PA28151. CARBURETOR. JAMMED. ACCELLERATOR PUMP INJECTION NOZZLE WAS DISLODGED FROM CASTED CARBURATOR CAVITY. NOZZLE BECAME LODGED BETWEEN CARBURATOR  (N4491F)
- [SDR HALA2021121300186](https://openairdocs.org/sdr/HALA2021121300186), Dec 10, 2021: Airbus A330243. LINE. ABNORMAL. ETOPS - INFO TO MX AFTER ENG START RESET OK ENG 1 CTL SYS FAULT // REMOVED AND REPLACED #1 ENG VSV PER AMM 75-33-51. CON (N374HA)
- [SDR GTIA2021112236130](https://openairdocs.org/sdr/GTIA2021112236130), Nov 19, 2021: Airbus A320232. RELAY. DEGRADED. AT LIFT OFF XXS APPEARED ON ENG 1 A/THURST, AFTER OFF ECAM FILLOWED N1 DEGRADED MODE KEPT THRUST BELOW N1 LIMITS BACK TO (N602NK)
- [SDR HALA2021110800155](https://openairdocs.org/sdr/HALA2021110800155), Nov 5, 2021: Airbus A330243. NONE. NONE. BLOCK TURN BACK ENG 2 CTL SYS FAULT ECAM ACTIONS COMPLETED // PERFORMED TSM 71-00-00-810-924-A PERFORMED VSV SYSTEM TEST (N391HA)
- [SDR HALA2021110100150](https://openairdocs.org/sdr/HALA2021110100150), Oct 29, 2021: Airbus A330243. NONE. NONE. ETOPS - UPON ENG SHUTDOWN ECAM ENG1 CTL SYS FAULT. COMPLIED WITH THR LEVER1 IDLE STATUS MSG BMC 2 // REMOVED AND REPLACE (N383HA)

All 1,272: https://openairdocs.org/jasc/7322/reports.md

## Airworthiness concern sheets (1)

- [AIR750-2025-07-E-7322-ACS](https://openairdocs.org/acs/AIR750-2025-07-E-7322-ACS): Engine Shutdowns During Power Reduction to Idle. Issued Dec 16, 2025

## 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 7321](https://openairdocs.org/jasc/7321): Fuel Control/Turbine Engines (2,878 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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