# SDR USAASB00055

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 2000
- Submitted: July 12, 2000
- Operation: Air carrier
- Aircraft: [N355US](https://openairdocs.org/aircraft/N355US), registered now
- Make and model: Boeing 737301
- Aircraft serial: 23558
- System (JASC): [2742 · Stabilizer Actuator](https://openairdocs.org/jasc/2742)
- Part: Actuator
- Part number: AR7077M3
- Condition: Failed
- Location: Stab Trim
- Part time: 28,205 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAASB00055

## Discrepancy

PHL - FLT 1063 - EN ROUTE FROM RIC TO BOS, THE STABILIZER ELECTRIC TRIM HAD FAILED.  FLIGHT DIVERTED TO PHL AND LANDED WITHOUT FURTEHR INCDIENT.  NO EMEGENCY WAS DECLARED.  MAINTENANCE PERFORMED FUNCTIONAL CHECK ON STABILIZER TRIM SYSTEM AND FOUND ALL FUNCTIONS NORMAL.  REMOVED AND REPLACED THE STABILIZER TRIM ACTUATOR ASSY AS PRECAUTIONARY AND PERFORMED OPERATIONAL CHECK PER MM 27-41-71.  ALSO, REMOVED AND REPLACED STABILIZER TRIM SAFETY RELAY R66 AND STABILIZER CONTROL RELAY R64 (P/N 9123-8071) AS PRECAUTIONARY.  SYSTEM CHECKS NORMAL.  VISUALLY INSPECTED STABILIZER JACKSCREW AND GIMBAL AND MOUNTING OF CUTOFF SWITCHES.  NO DEFECTS NOTED.  (M)

---
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.