# SDR MDAS091012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2002
- Submitted: August 20, 2002
- Operation: Air carrier
- Make and model: Boeing 737-800
- Registry model: [Boeing 737-800](https://openairdocs.org/model/boeing-737-800) (OpenAirDocs)
- Aircraft serial: 28236
- Aircraft time: 4,168 hours, 2,227 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Actuator
- Part number: 10622336
- Part serial: 1183
- Condition: Malfunctioned
- Location: Tail Cone
- Part time: 4,168 hours, 2,227 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: S, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MDAS091012

## Discrepancy

ON AUG19TH, AE 857 FLIGHT (A/C B-16802, S/N 28236) EXPERIENCED THAT "SPEED TRIM FAIL" LIGHT CAME ON DURING CLIMBED THROUGH 2500 FEET. BY 10 SECONDS, THE LIGHT WENT OFF. WHILE CLIMBED THROUGH 5000 FEET AND THE CREW ENGAGED THE "AUTO-PILOT", THE "STAB OUT OF TRIM" WARNING LIGHT CAME ON. THE CREW FOLLOWED QRH PROCEDURE, AND FOUND THAT THE CONDITION REMAINED UNCHANGED.  DUE TO THE ROUTE NEED RNP AND RVSM OPERATION, IT HAD TO HAVE "AUTO-PILOT". IF NOT, THE CRUISE HEIGHT HAD TO DESCENT BELOW FL290. CONSIDERATION OF FUEL QUANTITY IN THAT SITUATION, THE CREW ASK ATC FOR AIR TURNED BACK TO CKS AIRPORT. AIRCRAFT LANDED SAFELY.    IAW AMM PART 2  27-41-71, REPLACED STAB TRIM MOTOR. FUNCTION CHECK NORMAL.   PER AMM 22-11-8

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.