# SDR KKF2001F00000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 21, 2001
- Submitted: July 10, 2001
- Operation: Air carrier
- Aircraft: [N63CK](https://openairdocs.org/aircraft/N63CK), registered now
- Make and model: Lear 24A
- Registry model: [Lear 24A](https://openairdocs.org/model/learjet-24a) (OpenAirDocs)
- Aircraft serial: 119
- System (JASC): [2731 · Elevator Tab Control System](https://openairdocs.org/jasc/2731)
- Part: Socket
- Part number: M39029218
- Condition: Failed
- Location: Vertical Stab
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KKF2001F00000

## Discrepancy

PRIMARY PITCH TRIM FAILED, WILL TRIM NOSE UP BUT NOT NOSE DOWN.  REPLACED 3 SOCKETS IN CONNECTOR P1023 AT 2 SPEED TRIM BOX PINS B,C, AND D.  PERFORMED TRIM SYSTEM CHECKS.

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