# SDR 95ZZZM751

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N911TW](https://openairdocs.org/aircraft/N911TW), registered now
- 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: 49182
- Engine: Pwa JT8D217A
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Bushing
- Part number: 783310
- Condition: Failed
- Location: Nr 1 Eng Gearbox
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZM751

## Discrepancy

ICT - DURING CRUISE, NR 1 ENGINE, S/N 3210, SPOOLED DOWN.  SHUT DOWN ENGINE.  FOUND INTERNAL MALFUNCTION IN N-2 ACCESSORY GEARBOX, MFG P/N 758300.  CHANGED ENGINE AND ENGINE OPERATION CHECKED NORMAL.  INVESTIGATION OF SPOOL DOWN OF NR 1 ENGINE, REVEALED A BUSHING, P/N 783310, ALLOWED THE INPUT GEAR TO SHIFT CAUSING RAPID TOOTH WEAR, RESULTING IN GEARBOX FAILURE.  GEARBOX REPAIRED AND RETURNED TO SERVICE.  (M)

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