# SDR TWAA9801406

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N925TW
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49357
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Gyro
- Part number: 2587335113
- Condition: Worn
- Location: Nr 1
- Stage of operation: DE
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TWAA9801406

## Discrepancy

STL - FLT 455 - STARTING DESCENT INTO OMA, BOTH FLIGHT DIRECTORS FAILED.  RETURNED TO FLIGHT ORIGINATION STATION, STL. REPLACED NR 1 VERTICAL GYRO.  CHECK-C, 8-17-97 BFM.  (X)

---
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.