# JASC 2731: Elevator Tab Control System

- Type: JASC system/component code (FAA)
- ATA chapter: 27 Flight Controls
- Title in the code table: ELEVATOR TAB CONTROL SYSTEM
- Service difficulty reports: 1,295
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=25
- Page: https://openairdocs.org/jasc/2731

## What it covers

The system components and parts from the cockpit trim control to the elevator, ruddervator or stabilator tab, which controls position and movement. Includes the manual and electrical trim system parts. Does not include the hinges or structure, which are filed in JASC code 5520, the balance weights in JASC code 5520, or the autopilot servo in JASC code 2216. Typical parts are jackscrew, cable, actuator, sensor, motor, chain, sprocket, indicator, etc.

## Service difficulty reports (1,295, newest 50)

- [SDR 2026FA0000786](https://openairdocs.org/sdr/2026FA0000786), Sep 25, 2026: Quest KODIAK100. CONTROL CABLE. FAILED. DURING PREFLIGHT, ONE OF OUR PILOTS FOUND A BROKEN ELEVATOR TRIM CABLE. IT BROKE UP FRONT NEAR THE FIREWALL RIGHT AROUND
- [SDR 3EJA752JS09132026](https://openairdocs.org/sdr/3EJA752JS09132026), Sep 13, 2026: Cessna 525B. ACTUATOR. MECHANIC ERROR. AT FL450 WE GOT A RED E WITH A DOWN ARROW ANNUNCIATION ON BOTH PFD’S. RON WAS PF AND FIRMLY GRIPPED THE YOKE AS I GAVE H (N752JS)
- [SDR 3EJA202101962200](https://openairdocs.org/sdr/3EJA202101962200), Sep 12, 2026: Cessna 525B. ACTUATOR. FROZEN. DESCENDING THROUGH 43,000’ WE GOT A YELLOW TRIM MISCOMPARE ANNUNCIATION ON BOTH PFD’S FOLLOWED BY A RED TRIM MISCOMPARE  (N752JS)
- [SDR 2026FA0000680](https://openairdocs.org/sdr/2026FA0000680), Sep 3, 2026: Cirrus SR20. MOTOR. DEFECTIVE. ELEVATOR PITCH TRIM MOTOR HOUSING ATTACH SCREWS ARE WORKING LOOSE AND CAUSING EXCESSIVE MOVEMENT IN THE ELEVATOR CONTROL (N2117)
- [SDR UATA202609092701](https://openairdocs.org/sdr/UATA202609092701), Aug 24, 2026: Cessna 207. CONTROL CABLE. MISINSTALLED. A POST MAINT FLIGHT CHECK OF ACFT WAS CONDUCTED DUE TO AN ENG CHANGE, PROPELLER CHANGE, MULTIPLE FLT CONTROL SURFACE, CO (N26TA)
- [SDR DXTA2026081809299](https://openairdocs.org/sdr/DXTA2026081809299), Aug 15, 2026: Cessna 680A. TRIM SWITCH. FAULTED. ON DEPARTURE THROUGH 500 FT THERE WAS NO RESPONSE FROM THE PITCH TRIM. THE NOSE CONTINUED TO PITCH UP AND WE ACTIVATED T (N540QS)
- [SDR VNAA2026062920101](https://openairdocs.org/sdr/VNAA2026062920101), Jun 25, 2026: Cndair CL6002D24. ACTUATOR. UNSERVICEABLE. PITCH FEEL CAUTION IN FLIGHT / REMOVED LINEAR ACTUATOR #1 A141 AND INSTALLED LINEAR ACTUATOR #2 A140 IN ITS POSITION. OP (N574NN)
- [SDR 2026FA0000540](https://openairdocs.org/sdr/2026FA0000540), Jun 25, 2026: Cirrus SR20. TRIM MOTOR. DEFECTIVE. ELEVATOR PITCH TRIM MOTOR BASE ATTACH SCREWS (4EA) LOOSE ON MOUNTING BRACKET. EXCESSIVE PLAY IN THIS AREA IS CAUSING EXC (N2132)
- [SDR 2026FA0000294](https://openairdocs.org/sdr/2026FA0000294), Apr 24, 2026: Cirrus SR20. TRIM MOTOR. DEFECTIVE. ELEVATOR PITCH TRIM MOTOR HOUSE ATTACH SCREWS ARE WORKING LOOSE AND CAUSING EXCESSIVE MOVEMENT OF THE ELEVATOR SYSTEM. T (N2130)
- [SDR VNAA2026033115301](https://openairdocs.org/sdr/VNAA2026033115301), Mar 30, 2026: Cndair CL6002D24. POSITION SENSOR. FALSE INDICATION. PITCH FEEL CAUTION IN FLIGHT. / REMOVED AND REPLACED THE POSITION SENSOR ASSY IAW AMM 27-42-05-000/400-801. OPS CHECK OF (N553NN)
- [SDR EVGR20260325001](https://openairdocs.org/sdr/EVGR20260325001), Mar 25, 2026: Quest KODIAK100. ACTUATOR. JAMMED. PITCH TRIM WHEEL COULD ONLY BE MOVED WITHIN A VERY SMALL RANGE. MAINTENANCE INVESTIGATED AND FOUND THAT THE LH PITCH TRI (N28NR)
- [SDR IPXA2026032556716](https://openairdocs.org/sdr/IPXA2026032556716), Mar 19, 2026: Boeing 7478F. RETAINER. CRACKED. FOUND RH INBD ELEVATOR LOWER SPAR RETAINER DAMAGE. (REPLACE) 1. REMOVED DAMAGE RETAINER I.A.W SRM 51-40-02-0G REV.48. IN (N633UP)
- [SDR AALA202604021832](https://openairdocs.org/sdr/AALA202604021832), Mar 16, 2026: Boeing 737823. SPRING. MISSING. AIRCRAFT IN BASE MAINTENANCE: LEFT HORIZONTAL STABILIZER ELEVATOR TAB CONTROL MECHANISM HAS MISSING SPRING. INSTALLED NE (N914AN)
- [SDR ENHA20260218002](https://openairdocs.org/sdr/ENHA20260218002), Feb 17, 2026: Cessna 208B. TRIM SYSTEM. LOCKED. DURING TAKEOFF THE ELEVATOR CONTROL WAS LOCKED IN A SLIGHT CLIMB POSITION. ALSO ON TAKEOFF, THE ELECTRIC ELEVATOR PITCH  (N502GV)
- [SDR 2026FA0000085](https://openairdocs.org/sdr/2026FA0000085), Feb 4, 2026: Cessna T310R. HOUSING. MISOVERHAULED. TRIM TAB ACTUATOR HOUSING WAS IMPROPERLY DRILLED SEVERAL TIMES WHEN IT IS REQUIRED TO REUSE THE SAME HOLES WITHOUT ENLAR (N98869)
- [SDR DXTA2026010906453](https://openairdocs.org/sdr/DXTA2026010906453), Jan 5, 2026: Emb EMB505. ACTUATOR. FAULTED. AT FL430 THE PTRIM NML FAIL AMBER CAS MESSAGE PRESENTED (PICTURE ATTACHED). THE PITCH TRIM INDICATOR ON THE MFD INITIALL (N460QS)
- [SDR CALA2025120911960](https://openairdocs.org/sdr/CALA2025120911960), Dec 6, 2025: Boeing 7378. RELAY. FAULTY. FEEL DIFF PRESS LIGHT CAME ON DURING HIGH SPEED REGIME TAKEOFF ROLL. REFERENCED QRC. PERFORMED FIM 27-31 TASK 803 UP TO  (N27287)
- [SDR AALA202511181845](https://openairdocs.org/sdr/AALA202511181845), Nov 15, 2025: Boeing 737823. TAB. CORRODED. AIRCRAFT WAS GROUNDED: WHILE PERFORMING J/C 08T33027001, DVI OF LEFT ELEVATOR TAB INSTALL, FOUND ELAVATOR TAB CONTROL AC (N916AN)
- [SDR AALA202511188320](https://openairdocs.org/sdr/AALA202511188320), Nov 15, 2025: Boeing 737823. TAB. CORRODED. AIRCRAFT WAS GROUNDED: WHILE PERFORMING J/C 08T34027001, DVI OF RIGHT ELEVATOR TAB INSTALL, FOUND ELAVATOR TAB CONTROL A (N916AN)
- [SDR AALA202509254859](https://openairdocs.org/sdr/AALA202509254859), Aug 31, 2025: Boeing 737823. BUSHING. CORRODED. AIRCRAFT IN BASE MAINTENANCE: RIGHT ELEVATOR TAB CONTROL MECHANISM LOWER HARDWARE HAS EVIDENCE OF SURFACE RUST. REMOVED  (N301NW)
- [SDR AALA202509250670](https://openairdocs.org/sdr/AALA202509250670), Aug 31, 2025: Boeing 737823. BUSHING. CORRODED. AIRCRAFT IN BASE MAINTENANCE: RIGHT ELEVATOR TAB CONTROL MECHANISM LOWER HARDWARE HAS EVIDENCE OF SURFACE RUST. REMOVED  (N301NW)
- [SDR 2025F00228](https://openairdocs.org/sdr/2025F00228), Aug 29, 2025: Cessna 560XL. CONTROL CABLE. BROKEN. AMBER AP PITCH MISTRIM INFLIGHT DURING CLIMB OUT AT 210 IAS. DETERMINED THAT ELECTRIC AND MANUAL TRIM INOP. MANUAL PITCH (N606CB)
- [SDR 2025F00227](https://openairdocs.org/sdr/2025F00227), Aug 29, 2025: Cessna 560XL. CONTROL CABLE. BROKEN. AMBER AP PITCH MISTRIM INFLIGHT DURING CLIMB OUT AT 210 IAS. DETERMINED THAT ELECTRIC AND MANUAL TRIM INOP. MANUAL PITCH (N606CB)
- [SDR 2025F00226](https://openairdocs.org/sdr/2025F00226), Aug 29, 2025: Cessna 560XL. CONTROL CABLE. BROKEN. AMBER AP PITCH MISTRIM INFLIGHT DURING CLIMB OUT AT 210 IAS. DETERMINED THAT ELECTRIC AND MANUAL TRIM INOP. MANUAL PITCH (N606CB)
- [SDR 2025F00225](https://openairdocs.org/sdr/2025F00225), Aug 29, 2025: Cessna 560XL. CONTROL CABLE. BROKEN. AMBER AP PITCH MISTRIM INFLIGHT DURING CLIMB OUT AT 210 IAS. DETERMINED THAT ELECTRIC AND MANUAL TRIM INOP. MANUAL PITCH (N606CB)
- [SDR AALA202507099682](https://openairdocs.org/sdr/AALA202507099682), Jun 18, 2025: Boeing 737823. SPRING. CORRODED. AIRCRAFT IN BASE MAINTENANCE: RIGHT HAND ELEVATOR TAB CONTROL MECHANISM HAS EVIDENCE OF CORROSION ON LOWER SPRING ATTACH (N902AN)
- [SDR AALA202506127305](https://openairdocs.org/sdr/AALA202506127305), Jun 9, 2025: Boeing 737823. COMPUTER. LEAKING. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: FEEL DIFFERENTIAL PRESS LIGHT ILLUMINATED ON CLIMBOUT AFTER TAK (N800NN)
- [SDR AALA202506104795](https://openairdocs.org/sdr/AALA202506104795), May 23, 2025: Boeing 737823. SPRING. CORRODED. AIRCRAFT IN BASE MAINTENANCE: RIGHT HAND ELEVATOR CONTROL TAB MECHANISM SPRING SUPPORTS RUST. REMOVED AND REPLACED RIGHT (N997NN)
- [SDR AALA202506092409](https://openairdocs.org/sdr/AALA202506092409), May 21, 2025: Boeing 737823. MECHANISM. RUSTED. AIRCRAFT IN BASE MAINTENANCE: RIGHT HORIZONTAL STABILIZER ELEVATOR TAB CONTROL MECHANISM SPRINGS LOWER HARDWARE HAS EVID (N839NN)
- [SDR AALA202506097514](https://openairdocs.org/sdr/AALA202506097514), May 21, 2025: Boeing 737823. MECHANISM. CORRODED. AIRCRAFT IN BASE MAINTENANCE: LEFT HORIZONTAL STABILIZER ELEVATOR TAB CONTROL MECHANISM SPRINGS LOWER HARDWARE HAS EVIDE (N839NN)
- [SDR AALA202506093836](https://openairdocs.org/sdr/AALA202506093836), May 21, 2025: Boeing 737823. SPRING. BROKEN. AIRCRAFT IN BASE MAINTENANCE: RIGHT HORIZONTAL STABILIZER FOUND A BROKEN SPRING ON ELEVATOR TAB CONTROL MECHANISM. REMOV (N839NN)
- [SDR 2025FA0000370](https://openairdocs.org/sdr/2025FA0000370), May 20, 2025: Cessna T206H. ACTUATOR. BROKEN. WHILE CHECKING ELEVATOR TRIM CABLE TENSIONS, FOUND TENSIONS LOW. AFTER SETTING CORRECT TENSIONS, FOUND ELEVATOR TRIM TAB (N42178)
- [SDR SWI2025F00640](https://openairdocs.org/sdr/SWI2025F00640), May 13, 2025: Cndair CL6002C11. ACTUATOR. FAULTED. PITCH FEEL CAUTION MESSAGE DURING CLIMB. (FLIGHT 4229 - FILED CLOSED)INSPECTED MDC AND FOUND B1# 007978 PITCH FEEL ACT2/ (N719EV)
- [SDR 3EJA202503280001](https://openairdocs.org/sdr/3EJA202503280001), Mar 28, 2025: Cessna 525B. TRIM SYSTEM. MALFUNCTIONED. DURING CLIMB MAX TRIM INDICATOR SHOWED MAX FORWARD. WHEN WE WENT TO MANUALLY TRIM WE NOTICED THE WHEEL SPUN FREELY AND W (N736JS)
- [SDR 2025FA0000198](https://openairdocs.org/sdr/2025FA0000198), Mar 21, 2025: Cessna T182T. ACTUATOR. FAULTED. PILOT REPORTED: WHILE ON DESCENT INTO KPWG I DISCONNECTED THE AUTOPILOT AT 500 FT AGL. I WENT TO MAKE A MANUAL ADJUST OF (N65927)
- [SDR CVGA20250218004](https://openairdocs.org/sdr/CVGA20250218004), Feb 13, 2025: Beech 400A. CONTROLLER. FAILED. PITCH TRIM MOTOR FAILURE - EMERGENCY DECLARED - REMOVED RH PITCH TRIM CONTROLLER P/N 76621-4 S/N 2392. INSTALLED SERVICE (N452TM)
- [SDR 4DPA2025012600001](https://openairdocs.org/sdr/4DPA2025012600001), Jan 26, 2025: Emb EMB145LR. TRIM SYSTEM. INOPERATIVE. CREW REPORTED UPON TAKE OFF PTRIM MAIN INOP EICAS APPEARED. RESET MAIN PITCH TRIM SYSTEM REMOTELY WITH MOC OVER THE PHON (N915JX)
- [SDR CWQA2024122302](https://openairdocs.org/sdr/CWQA2024122302), Dec 22, 2024: Gulstm GVSPG550. PITCH CONTROL. FAULTED. DURING CLIMB CREW NOTICED ELECTRIC PITH TRIM UNRESPONSIVE, CREW USED MANUAL PITCH TRIM WHEEL TO CONTROL PITCH TRIM. CHEC (N888KZ)
- [SDR AALA202412041566](https://openairdocs.org/sdr/AALA202412041566), Dec 1, 2024: Boeing 737823. ACTUATOR. LEAKING. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: HYDRAULIC SYSTEM-A QUANTITY DECREASED FROM 93% TO 77% WITHIN 5  (N966AN)
- [SDR 3EJA202407220001](https://openairdocs.org/sdr/3EJA202407220001), Jul 20, 2024: Cessna 560XL. TRIM SYSTEM. FAULTED. PITCH TRIM ISSUE WAS CONFIRMED AFTER NOTICING A CONSTANT BUFFETING AT FL400,I FELT THE PITCH TRIM WHEEL CLICKING , DISCO (N868JS)
- [SDR CALA2024070801977](https://openairdocs.org/sdr/CALA2024070801977), Jul 8, 2024: Boeing 7378. COTTER PIN. MISSING. DURING ELEVATOR LUBE, FOUND BOTH COTTER PINS FOR T-BOLTS MISSING ON ELEVATOR TAB CONTROL RODS. REPLACED MISSING COTTER P (N17285)
- [SDR ABXA20240313155](https://openairdocs.org/sdr/ABXA20240313155), Mar 11, 2024: Boeing 767281. SWITCH. FAILED. DURING TAXI ,ELEVATOR FEEL / STAB TRIM EICAS APPEARED. AC RETURNED TO GATE AND MAINTENANCE GROUNDED AC. WHILE PERFORMING (N774AX)
- [SDR MCCA202402150176](https://openairdocs.org/sdr/MCCA202402150176), Feb 7, 2024: Stbros SD330. CABLE. BROKEN. ELEVATOR TRIM TAB CABLE BROKE AFTER TAKEOFF (N262AG)
- [SDR AALA202401104696](https://openairdocs.org/sdr/AALA202401104696), Jan 7, 2024: Boeing 737823. CONTROL MODULE. TRIPPED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: YAW DAMPER MALFUNCTION. AIRCRAFT RETURN TO AND LANDED SAFELY AT (N343PN)
- [SDR 4DPA2023121600001](https://openairdocs.org/sdr/4DPA2023121600001), Dec 16, 2023: Emb EMB145LR. UNKNOWN. UNKNOWN. CREW REPORTED PITCH TRIM BACKUP INOP. RAN QRH AND RETURNED DUE TO NO MX IN GUNNISON. CORR ACTION; MX TROUBLESHOT TO DIRT (N962JX)
- [SDR 2023F00305](https://openairdocs.org/sdr/2023F00305), Oct 12, 2023: Honda HA420. ACTUATOR. DEFECTIVE. AFTER TAKEOFF CREW OBSERVED PITCH TRIM FAULT CAS MESSAGE AND EXPERIENCED INCREASED BACK PRESSURE ON THE YOKE DURING CLIM (N719SJ)
- [SDR 2023FA0000596](https://openairdocs.org/sdr/2023FA0000596), Oct 12, 2023: Gulstm GVSPG550. CHAIN. DETACHED. ELEVATOR TRIM SERVO CHAIN MISSING AND CAS ELEV TRIM 1-2 FAIL DURING FLIGHT. UPON ARRIVAL - CHAIN LOCATED IN TAIL COMPART (N940TT)
- [SDR HYIA20230707002](https://openairdocs.org/sdr/HYIA20230707002), Jun 30, 2023: Tecnam P2012. UNKNOWN. UNKNOWN. PILOT REPORTED PITCH TRIM ONLY GOES NOSE DOWN, WILL NOT GO NOSE UP. MAINTENANCE INSPECTED PITCH TRIM SYSTEM, VERIFIED PI (N288CA)
- [SDR UIEA2023011500043](https://openairdocs.org/sdr/UIEA2023011500043), Jan 23, 2023: Boeing 767324. PCA. OUT OF ADJUST. RH HORIZONTAL STABILIZER, INBOARD PCA FREEPLAY OUT LIMIT.(<P>PCA WAS REPLACED AND THE PCA INPUT ROD WAS ADJUSTED PER AMM (N645GT)
- [SDR AALA202301231567](https://openairdocs.org/sdr/AALA202301231567), Jan 20, 2023: Boeing 737823. RELAY. FAULTY. AIRCRAFT WAS GROUNDED: MAIN ELECTRIC TRIM FAILED AT 5000 FEET. EMERGENCY DECLARED; FLIGHT RETURNED TO MIA LANDING SAFELY (N306SW)

All 1,295: https://openairdocs.org/jasc/2731/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 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 2742](https://openairdocs.org/jasc/2742): Stabilizer Actuator (610 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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