# SDR 3EJA202101962200

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 2026
- Submitted: October 19, 2026
- Operation: Air carrier
- Aircraft: [N752JS](https://openairdocs.org/aircraft/N752JS), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0228
- Aircraft time: 10,487 hours, 7,083 cycles
- System (JASC): [2731 · Elevator Tab Control System](https://openairdocs.org/jasc/2731)
- Part: Actuator
- Part number: 6396022206
- Condition: Frozen
- Location: Zone 300
- Part time: 10,487 hours, 7,083 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: S
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/3EJA202101962200

## Discrepancy

DESCENDING THROUGH 43,000’ WE GOT A YELLOW TRIM MISCOMPARE ANNUNCIATION ON BOTH PFD’S FOLLOWED BY A RED TRIM MISCOMPARE ON BOTH PFD’S. I WAS PF AND DISCONNECTED THE AUTOPILOT. THE AIRPLANE JUMPED NOSE UP. I CAUGHT IT AND BROUGHT IT BACK TO A STABILIZED DESCENT. I COULD NOT MOVE THE MANUAL TRIM WHEEL EITHER DIRECTION. ASKED FOR AND WERE GIVEN A LEVEL OFF AT 42000 TO WORK OUT THE PROBLEM. HAVING TO PUSH VERY HARD TO OVERCOME THE NOSE UP TRIM AND STAY LEVEL.  GAVE THE TRIM WHEEL A HARSH PUSH AND GOT A LITTLE RELIEF.  HAVING TO USE BOTH HANDS TO KEEP THE AIRPLANE LEVEL. (RS,PM) REACHED OVER AND ALSO GAVE THE WHEEL ANOTHER HARD NOSE DOWN PUSH AND WAS ABLE TO GET A LITTLE MORE RELIEF.   LUBRICATED LT /RT ELEVATOR TRIM TAB ACTUATORS IAW 12-21-01. OPS CHECKS GOOD IAW  MM 27-30-01, GOT OUT THE QRH AND REFERRED TO T3 ELECTRIC ELEVATOR TRIM INOPERATIVE.

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