# JASC 2742: Stabilizer Actuator

- Type: JASC system/component code (FAA)
- ATA chapter: 27 Flight Controls
- Title in the code table: STABILIZER ACTUATOR
- Service difficulty reports: 610
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=26
- Page: https://openairdocs.org/jasc/2742

## What it covers

The component which actuates the horizontal stabilizer to infinite angles of incidence to provide pitch trim. Includes both manual and power assist types. Typical parts are actuator, actuator bracket, clutch, motor, seal, etc.

## Service difficulty reports (610, newest 50)

- [SDR WH6A20261021999LR](https://openairdocs.org/sdr/WH6A20261021999LR), May 18, 2026: Gulstm GVSPG550. ACTUATOR. FAILED. ON MAY 18 2026, N999LR HAD A FLIGHT CONTROL MALFUNCTION HORIZOTAL STABILIZER ACTUATOR (HSTA) WHICH LED TO THE CREW DECLA (N999LR)
- [SDR CALA2026030314244](https://openairdocs.org/sdr/CALA2026030314244), Mar 1, 2026: Boeing 767322. ACTUATOR. FAULTED. HORIZONTAL STAB VISUAL INSPECTION, FOUND HAND ETCHED MARKING AT TOP OF JACKSCEW, FOUND ADDITONAL ETCHING ON SECOND THREA (N670UA)
- [SDR CALA2025052905056](https://openairdocs.org/sdr/CALA2025052905056), May 26, 2025: Airbus A320232. CONTROL SERVO. FAULTED. TEST FLIGHT DISCREPANCY. . RSP3 ON RIGHT SIDE FLOATED WITH BLUE HYD DEPRESSURIZED. REFLY R EQD. REMOVED AND REPLACED RH  (N464UA)
- [SDR DALA2025021001018](https://openairdocs.org/sdr/DALA2025021001018), Feb 7, 2025: Boeing 737932ER. BALLNUT. LEAKING. (LOG 0800558) HORIZONTAL STABILIZER TRIM ACTUATOR BALLNUT HAS RAISED/LEAKING RETURN TUBE. HORIZONTAL STABILIZER TRIM ACT (N857DZ)
- [SDR DALA2024102110231](https://openairdocs.org/sdr/DALA2024102110231), Oct 18, 2024: Boeing 737932ER. ACTUATOR. MAKING METAL. (LOG 0616130) FOUND METALLIC DEBIS IN THE GREASE OF THE BALL NUT. (REF) AA 2740-0177-0101. HORIZONTAL STABILIZER TRIM AC (N849DN)
- [SDR DALA2024051405170](https://openairdocs.org/sdr/DALA2024051405170), May 10, 2024: Boeing 717200. JACKSCREW. NICKED. -AD- A NICK WAS FOUND ON THREAD OF THE ACME SCREW AT THE HORIZONTAL STAB. SUMMARY OF NRC 00485: HORIZONTAL STABILIZER AC (N923AT)
- [SDR DALA2023101908621](https://openairdocs.org/sdr/DALA2023101908621), Oct 18, 2023: Airbus A319114. UNKNOWN. UNKNOWN. SHIP 3129 CORROSION ELEVATOR ACTUATOR CONNECTOR O/B SIDE ON LH HORIZONTAL STABILIZER. CORRECTIVE ACTION: REPLACED SERVO  (N329NB)
- [SDR DALA2023101908620](https://openairdocs.org/sdr/DALA2023101908620), Oct 18, 2023: Airbus A319114. UNKNOWN. UNKNOWN. SHIP 3129 CORROSION SERVO CONTROL ACTUATOR ELEVATOR CONNECTOR I/B POSITION ON RH HORIZONTAL STABILIZER (2 EA). CORRECTIV (N329NB)
- [SDR DALA2023101908619](https://openairdocs.org/sdr/DALA2023101908619), Oct 18, 2023: Airbus A319114. UNKNOWN. UNKNOWN. SHIP 3129 CORROSION SERVO CONTROL ACTUATOR ELEVATOR CONNECTOR O/B POSITION ON RH HORIZONTAL STABILIZER (2 EA). CORRECTIV (N329NB)
- [SDR DALA2023080706382](https://openairdocs.org/sdr/DALA2023080706382), Aug 3, 2023: Boeing 7379. UNKNOWN. UNKNOWN. (LOG 2899657) HORIZONTAL STABILIZER BALLSCREW FITTING UPPER GIMBAL FWD ATTACHMENT NUT IS NOT ENGAGED IN COTTER PIN REF.  (N933DJ)
- [SDR AALA202304136836](https://openairdocs.org/sdr/AALA202304136836), Apr 12, 2023: Boeing 737823. MOTOR. FAILED. AIRCRAFT WAS GROUNDED: AFTER TAKEOFF THE STABILIZER TRIM TOTALLY FAILED WITH SPEED TRIM FAILED ANNUNCIATION. EMERGENCY D (N810NN)
- [SDR AALA202303272555](https://openairdocs.org/sdr/AALA202303272555), Mar 25, 2023: Boeing 737823. TRIM MOTOR. FAULTY. AIRCRAFT WAS GROUNDED: AFTER TAKEOFF NO ELECTRIC TRIM WITH YOKE SWITCH. MANUAL TRIM WORKED NORMAL. EMERGENCY DECLARED; F (N321RL)
- [SDR AALA202303017930](https://openairdocs.org/sdr/AALA202303017930), Feb 8, 2023: Boeing 737823. TRIM MOTOR. STUCK. AIRCRAFT WAS GROUNDED: ON CLIMB UNABLE TO TRIM STABILIZER WITH YOKE TRIM SWITCHES OR MANUALLY WITH TRIM WHEEL. PITCH TRI (N941AN)
- [SDR DALA2023012200465](https://openairdocs.org/sdr/DALA2023012200465), Jan 18, 2023: Boeing 737932ER. BOLT. DAMAGED. DURING INSPECTION, FOUND DAMAGE THREADS ON THE BOLT OF THE HORIZONAL STAB TRIM ACTUATOR SUPPORT PLATE. DAMAGE TRIM ACTUA (N816DN)
- [SDR DALA2022123008498](https://openairdocs.org/sdr/DALA2022123008498), Dec 29, 2022: Boeing 7379. JACKSCREW. CORRODED. (LOG 2559400) DURING ACCOMPLISHMENT OD AD CARD 2740-01077-0101, FOUND LIGHT CORROSION AROUND THE THREADS OF THE HORIZONT (N951DA)
- [SDR DALA2022120807922](https://openairdocs.org/sdr/DALA2022120807922), Dec 6, 2022: Boeing 737932ER. BUSHING. GOUGED. DURING REMOVAL OF HORIZONTAL STABILIZER TRIM ACTUATOR, GOUGES WERE FOUND ON RH INBDOARD BUSHING OF UPPER JACKSCREW FITTI (N813DN)
- [SDR 2022FA0000335](https://openairdocs.org/sdr/2022FA0000335), Jul 5, 2022: Swrngn SA227AC. NONE. FAILED. PILOT REPORTED PTITCH TRIM FAILS INFLIGHT. MX REMOVED AND REPLACED FAILED PITCH TRIM ACTUATOR WITH OVERHAULED UNIT IAW T (N538KL)
- [SDR 9JLA2022071238675](https://openairdocs.org/sdr/9JLA2022071238675), Jun 30, 2022: Lear 60LEAR. ACTUATOR. FAILED. THE FLIGHT CREW REPORTED AN AMBER PITCH TRIM ANNUNCIATOR ILLUMINATED IN CRUISE FLIGHT WHILE TRIMMING. THE MAINTENANCE PR (N24GU)
- [SDR F3LA2022070500068](https://openairdocs.org/sdr/F3LA2022070500068), Jun 30, 2022: Airbus A320251N. RUDDER. MISRIGGED. DISCREPANCY: REFERENCE LP 231897 ITEM 1; CLIMBING THROUGH FL300 MODERATE AIRFRAME VIBRATION @ MACH.79 SLOWED TO .7 AND T (N335FR)
- [SDR DALA2022061004084](https://openairdocs.org/sdr/DALA2022061004084), Jun 7, 2022: Boeing 737832. BALL JOINT. LEAKING. (LOG 2268162) LARGE AMOUND OF GREASE IS PRESENT AROUND THE STABILIZER TRIM ACTUATOR DUE GREASE IS ESCAPING FROM BALL NUT (N371DA)
- [SDR AALA202205105758](https://openairdocs.org/sdr/AALA202205105758), May 9, 2022: Airbus A319112. ACTUATOR. FAULTY. AIRCRAFT WAS GROUNDED: DURING DESCENT INTO CLT, AUTOPILOT #2 DISCONNECTED; SOON AFTER, BOTH ELAC'S FAILED. DECLARED AN E (N737US)
- [SDR HALA2022042500142](https://openairdocs.org/sdr/HALA2022042500142), Apr 24, 2022: Airbus A330243. NONE. NONE. SHIP 378 WHILE WORKING W/C 2740-2101-HAL FOUND METAL PARTICLES AT THE BASE OF THE ROD SPHERE. CORRECTIVE ACTON: REMOVED  (N378HA)
- [SDR 9JLA2022042631165](https://openairdocs.org/sdr/9JLA2022042631165), Apr 13, 2022: Lear 45LEAR. ACTUATOR. DEFECTIVE. THE FLIGHT CREW REPORTED THAT UPON BATTERY POWER UP IMMEDIATE CLICKING NOISE HEARD FROM TAIL SECTION WHILE IN PRIMARY TR (N15CF)
- [SDR N6WA2022021402](https://openairdocs.org/sdr/N6WA2022021402), Feb 11, 2022: Cndair CL600*. NONE. FAILED. IB FLT SPOILER, IB SPOILERONS, PITCH FEEL, IB GND SPOILER, AND AP PITCH TRIM CAUTION MSGS. T/S THRU MDC B1 CODE 007992 F (N565GJ)
- [SDR 9JLA2021120831806](https://openairdocs.org/sdr/9JLA2021120831806), Dec 5, 2021: Hawbee 4000. ACTUATOR. DEFECTIVE. THE FLIGHT CREW REPORTED THAT THE HORIZONTAL STABILIZER TRIM FAILED IN FLIGHT, THE FLIGHT CREW ELECTED TO DIVERT FLIGHT  (N143RL)
- [SDR 2022F00050](https://openairdocs.org/sdr/2022F00050), Nov 20, 2021: Gulstm G150. STABILIZER. FAILED. WHILE CRUISING AT 38,000 FT. WE HAD A MACH TRIM FAIL INDICATION. AUTO PILOT KICKED OFF AND AIRCRAFT STARTED TO PITCH UP. (N787BN)
- [SDR VNAA202111231111](https://openairdocs.org/sdr/VNAA202111231111), Nov 20, 2021: Cndair CL6002D24. CONTROL UNIT. UNSERVICEABLE. ENROUTE TO CLT THE CREW RECEIVED A STAB TRIM/MACH TRIM FAIL MESSAGES. THE CREW RAN THE QRH AND THE RESET WAS UNSUCCESSFU (N573NN)
- [SDR AALA202110200390](https://openairdocs.org/sdr/AALA202110200390), Oct 15, 2021: Airbus A320214. MOTOR. LEAKING. AIRCRAFT GROUNDED: BURNING ODOR AFTER T/O, SMELLED LIKE OVEN, BUT NONE WERE ON. LASTED 3-5 MINS. F/AS IN AFT GALLEY SAID (N110UW)
- [SDR AALA202110200960](https://openairdocs.org/sdr/AALA202110200960), Oct 15, 2021: Airbus A320214. MOTOR. LEAKING. AIRCRAFT GROUNDED: BURNING ODOR AFTER T/O, SMELLED LIKE OVEN, BUT NONE WERE ON. LASTED 3-5 MINS. F/AS IN AFT GALLEY SAID (N110UW)
- [SDR JIKA2021072801](https://openairdocs.org/sdr/JIKA2021072801), Jul 26, 2021: Swrngn SA227AT. ACTUATOR. INOPERATIVE. SHORTLY AFTER TAKEOFF FROM KSTT, PITCH TRIM FAILED IN TAKEOFF POSITION. THE PILOT THEN FOLLOWED A QRH BUT UNABLE TO RESE (N242DH)
- [SDR SCNA20210125003](https://openairdocs.org/sdr/SCNA20210125003), Jan 23, 2021: Boeing 7378Q8. ACTUATOR. FAULTED. DURING CRUISE STAB OUT OF TRIM ILLUMINATED UNABLE TO MOVE TRIM MANUALLY. DIVERTED TO MEM. EMERGENCY DECLARED. FLIGHT LAN (N809SY)
- [SDR 3WTR20201211](https://openairdocs.org/sdr/3WTR20201211), Dec 11, 2020: Lear 45LEAR. ACTUATOR. BINDING. AIRCRAFT HAD HISTORY OF INTERMITTENT PITCH TRIM FAULT ON ECAS. TROUBLESHOT AND FOUND HORIZONTAL STABILIZER ACTUATOR P/N  (N443SL)
- [SDR F3LA202007300032](https://openairdocs.org/sdr/F3LA202007300032), Jul 26, 2020: Airbus A320251N. ACTUATOR. LEAKING. THS ACTUATOR LEAKING AND SIGHT GLASS READS MIN. REMOVED AND REPLACED ACTUATOR PER A320 AMM 27-44-51-000-001-A & 27-44-51 (N337FR)
- [SDR HYIA20200716001](https://openairdocs.org/sdr/HYIA20200716001), Jul 16, 2020: Tecnam P2012. ACTUATOR. EXCESS PLAY. CREW REPORTED EXCESSIVE VIBRATION IN FLIGHT DURING CRUISE CONFIGURATION. THE VIBRATION WAS FELT IN YOKE, RUDDER PEDALS,  (N266CA)
- [SDR FDEA2020061621211](https://openairdocs.org/sdr/FDEA2020061621211), Jun 12, 2020: Doug MD11F. TRIM MOTOR. DIRTY. RECEIVED "HYD 3 ELEV OFF" IN CLIMB. FOUND NR 3 SYSTEM DECREASING. RECEIVED "HYD 3 OFF" AND "HYD 3 FAIL" IN TURN AS LEVEL (N525FE)
- [SDR FDEA2020060321107](https://openairdocs.org/sdr/FDEA2020060321107), Jun 2, 2020: Doug MD11F. SPROCKET. DAMAGED. FOUND RT THS DRIVE CHAIN OUTBOARD IDLER SPROCKET DAMAGED AND MISSING BEARING, FOUND DURING HORZ STAB LUBE. (N601FE)
- [SDR AALA202005299008](https://openairdocs.org/sdr/AALA202005299008), May 28, 2020: Boeing 737823. TRIM MOTOR. DEFECTIVE. AIRCRAFT WAS NOT GROUNDED: DURING ILS 35R STAB OUT OF TRIM LIGHT CAME ON JET DID NOT INTERCEPT GS AND TRIM WHEEL WAS NOT (N890NN)
- [SDR FDEA2020050410890](https://openairdocs.org/sdr/FDEA2020050410890), May 1, 2020: Doug MD11F. TRIM MOTOR. CRACKED. 2:00 INTO FLT, FLT 370 HYD 3 ELEV OFF ALER. HYD SYS 3 WAS AT 3.9 OVER NEXT FIVE MINUTES DROPPED TO 3.6. DEPRESSURIZED SY (N617FE)
- [SDR SWIA2020041350118](https://openairdocs.org/sdr/SWIA2020041350118), Apr 13, 2020: Emb ERJ170200LR. TRIM SWITCH. FAILED. UPON TAKEOFF, PLANE CONTINUED TO PITCH UP. WHILE AP ON PLANE CONTINUED TO PITCH HIGH WITH AIRSPEED FROZEN TO LOWER NUMBE (N184SY)
- [SDR CALA2020032100660](https://openairdocs.org/sdr/CALA2020032100660), Mar 16, 2020: Boeing 737824. TRIM MOTOR. MALFUNCTIONED. STAB TRIB RUNAWAY WHILE HANDFLYING FLAPS 0 SPEED TRIM FAIL LIGHT BOTH TRIMS MANUEL DISCNT CREW REPORTS THAT INITIALLY AF (N24211)
- [SDR DALA2019110406395](https://openairdocs.org/sdr/DALA2019110406395), Nov 4, 2019: Bombdr BD1001A10. BRAKE. MALFUNCTIONED. DESCENDING THRU FL240 STAB TRIM FAIL EICAS MESSAGE. FAULT CODES 2741F0013, 2741F0013, 2741F0036 AND 274F0037 IN FAULT MS (N109DU)
- [SDR O2GA2019111651101](https://openairdocs.org/sdr/O2GA2019111651101), Nov 1, 2019: Cessna 560XL. TRIM MOTOR. FAULTY. DURING DESCENT FROM FL410 TO FL310 THE CREW RECEIVED A PITCH TRIM AMBER ANNUNCIATION ON THE PFD'S AT AROUND FL320. AUTOP (N511UP)
- [SDR RAIA201909230002](https://openairdocs.org/sdr/RAIA201909230002), Sep 23, 2019: Emb EMB145XR. CONTROL UNIT. INOPERATIVE. PITCH TRIM MAIN INOP FOLLOWED BY PITCH TRIM BACKUP INOP. RETURNED FROM FLIGHT AND DECLARED EMERGENCY. LANDED WITHOUT INC (N17138)
- [SDR ESMR2019092601](https://openairdocs.org/sdr/ESMR2019092601), Sep 20, 2019: Cirrus SF50. ACTUATOR. DEFECTIVE. PILOT ABORTED TAKEOFF DUE TO ABNORMAL PITCH CONTROL PRESSURE NEEDED TO ROTATE / TAKEOFF. THE LT MAIN WHEEL / TIRE ASSEMB (N204HS)
- [SDR AALA201909179007](https://openairdocs.org/sdr/AALA201909179007), Sep 16, 2019: Boeing 737823. TRIM MOTOR. FAILED. AIRCRAFT WAS GROUNDED: FLIGHT RETURNED TO ABQ ON ACCOUNT OF STABILIZER ELECTRIC TRIM INOPERATIVE. AN EMERGENCY WAS DECLA (N961NN)
- [SDR ASAA2019091330699](https://openairdocs.org/sdr/ASAA2019091330699), Sep 13, 2019: Boeing 737890. TRIM MOTOR. FAILED. AFTER DEPARTURE ELECTRIC TRIM INOP ON BOTH CONTROL COLUMNS. ENGAGED AUTOPILOT PER QRH & STAB OUT OF TRIM LIGHT ILLUMINAT (N584AS)
- [SDR SIMA20190912001](https://openairdocs.org/sdr/SIMA20190912001), Sep 12, 2019: Emb EMB145LR. ACTUATOR. FAILED. PTRIM MAIN INOP "TRANSFERRED TO NRWC 698-ORD-04545". WLS 1 HEAT FAIL. C/A-REMOVED AND REPLACED HORIZONTAL-STABILIZER ACT (N698CB)
- [SDR SIMA20190903001](https://openairdocs.org/sdr/SIMA20190903001), Sep 3, 2019: Cndair CL6002C10. ACTUATOR. FAILED. PITCH FEEL CAUTION MSG IN FLIGHT. QRH COMPLIED WITH. EMERGENCY DECLARED. C/A-REMOVED AND REPLACED LINEAR PITCH TRIM ACTU (N543EA)
- [SDR YENA201909020500](https://openairdocs.org/sdr/YENA201909020500), Sep 2, 2019: Airbus A320232. ACTUATOR. FAILED. FLT 2824, MEX-MCO. WHILE ACCOMP T.C A32-027-49-00-710-00 ITEM 7 STEP 1 THE ELAC 2 PITCH FAULT MESSAGE DID NOT COME ON AN (N523JB)
- [SDR CALA2019072401235](https://openairdocs.org/sdr/CALA2019072401235), Jul 22, 2019: Boeing 737824. TRIM MOTOR. INOPERATIVE. NO ELECTRIC OR AP STAB TRIM AFTER TAKE OFF REPLACED STAB TRIM MOTOR IAW AMM27-41-71-000-801 AND STAB INTERLOCK RELAY PER (N79279)

All 610: https://openairdocs.org/jasc/2742/reports.md

## Other codes in chapter 27

- [JASC 2700](https://openairdocs.org/jasc/2700): Flight Control System (1,742 reports)
- [JASC 2701](https://openairdocs.org/jasc/2701): Control Column Section (510 reports)
- [JASC 2710](https://openairdocs.org/jasc/2710): Aileron Control System (2,967 reports)
- [JASC 2711](https://openairdocs.org/jasc/2711): Aileron Tab Control System (415 reports)
- [JASC 2720](https://openairdocs.org/jasc/2720): Rudder Control System (3,130 reports)
- [JASC 2721](https://openairdocs.org/jasc/2721): Rudder Tab Control System (686 reports)
- [JASC 2722](https://openairdocs.org/jasc/2722): Rudder Actuator (284 reports)
- [JASC 2730](https://openairdocs.org/jasc/2730): Elevator Control System (2,647 reports)
- [JASC 2731](https://openairdocs.org/jasc/2731): Elevator Tab Control System (1,295 reports)
- [JASC 2740](https://openairdocs.org/jasc/2740): Stabilizer Control System (2,126 reports)
- [JASC 2741](https://openairdocs.org/jasc/2741): Stabilizer Position Indicating (889 reports)
- [JASC 2750](https://openairdocs.org/jasc/2750): Trailing Edge Flap Control System (10,186 reports)
- [JASC 2751](https://openairdocs.org/jasc/2751): Trailing Flap Position Indicating System (3,078 reports)
- [JASC 2752](https://openairdocs.org/jasc/2752): Trailing Edge Flap Actuator (1,978 reports)
- [JASC 2760](https://openairdocs.org/jasc/2760): Drag Control System (3,502 reports)
- [JASC 2761](https://openairdocs.org/jasc/2761): Drag Control Actuator (1,070 reports)
- [JASC 2770](https://openairdocs.org/jasc/2770): Gust Lock Damper System (90 reports)
- [JASC 2780](https://openairdocs.org/jasc/2780): Leading Edge Slat Control System (2,157 reports)
- [JASC 2781](https://openairdocs.org/jasc/2781): Leading Edge Slat Position Indicating System (1,398 reports)
- [JASC 2782](https://openairdocs.org/jasc/2782): Leading Edge Slat Actuator (1,225 reports)
- [JASC 2797](https://openairdocs.org/jasc/2797): Flight Control System Wiring (919 reports)

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