# SDR FDEA200911173999

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2009
- Submitted: November 18, 2009
- Operation: Air carrier
- Aircraft: [N257FE](https://openairdocs.org/aircraft/N257FE), registered now
- Make and model: Boeing 727233
- Aircraft serial: 20939
- Aircraft time: 57,715 hours, 36,613 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 258580212
- Part serial: 1242106
- Condition: Failed
- Location: Autopilot
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA200911173999

## Discrepancy

ON CLIMBOUT "STAB OUT OF TRIM LIGHT" LIGHT ON CONTINUOUSLY WITH AUTOPILOT ON.  AUTOPILOT WOULD NOT TRIM OR HOLD ALTITUDE.  RAN " STABILIZER OUT OF TRIM  LIGHT REMAINING ILLUMINATED" CHECKLIST TWICE.  AUTOPILOT WOULD NOT ENGAGE PROPERLY WITH A/P DISCONNECTED, ALL TRIM SEEMED TO WORK PROPERLY. MADE DESCENT AND LANDING WITH A/P DISENGAGED.  AACFT WAS IN SERVO "A" AT THE TIME.  RELEASED FOR SERVICE IAW MEL: 22-01-11-A.   REMOVED AND REPLACED A/P MODE CONTROL PANEL IAW MM 22-11-181-4.  PERFROMED A/P RTS CKS IAW MM 22-11-008-5.  NO DISCREPANCIES NOTED.  A/P SERVO "A" REMAINS NOT II.  SERVO "B" IS CK II.

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