# SDR AALA20160627011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 2016
- Submitted: June 28, 2016
- Operation: Air carrier
- Aircraft: N9403W
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53139
- Aircraft time: 66,524 hours, 32,842 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Trim Switch
- Part number: 3065300
- Condition: Worn
- Location: Cockpit
- Stage of operation: CL
- 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/AALA20160627011

## Discrepancy

AIRCRAFT WAS GROUNDED.  AIR INTERRUPT, EMERGENCY DECLARED, LANDING UNEVENTFUL.  DURING CLIMB THE HORIZONTAL STABILIZER PRIMARY TRIM FAILED.  ALTERNATE TRIM OPERATED NORMALLY.  R & R THE CAPTAIN"S PRIMARY TRIM YOKE SWITCH IAW AMM 27-40-02.  RESET PRIMARY TRIM DRIVE A, B AND C CIRCUIT BREAKERS AND ACCOMPLISHED OPS CHECK.  SYSTEM CHECKS NORMAL.

---
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.