# SDR 95ZZZX6348

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N9110F](https://openairdocs.org/aircraft/N9110F), registered now
- Make and model: Hughes 369HS
- Registry model: [Hughes 369HS](https://openairdocs.org/model/hughes-369hs) (OpenAirDocs)
- Aircraft serial: 1190210S
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Bolt
- Part number: NAS130424H
- Condition: Wrong Part
- Location: T/R Grbox
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX6348

## Discrepancy

ACFT WAS IN FOR A 100-HOUR INSP.  MECHANIC PERFORMING TAIL ROTOR GEARBOX MOUNT RE-TORQUE, CUT THE SAFETY WIRE AND THE BOLT PULLED OUT.  IT WAS ALSO FOUND THAT 2 OTHER BOLTS WERE ONLY IN PLACE BY 2 THREADS.  MECHANIC STATED BOLTS WERE INCORRECT, PN NAS1304-24H, AND THERE WAS A WASHER UNDER THE HEAD OF EACH OF THE 4 BOLTS.  RECORDS REVEALED THE TAIL BOOM HAD BEEN REPLACED WITH AN ALTERNATE TAIL BOOM, PN 369A3500-619.  PARTS MANUAL INDICATES MODEL TAIL BOOM, BOLT, PN NAS1304-26H (ITEM 38) WAS TO BE INSTALLED AND NO WASHERS UNDER THE HEAD OF THE BOLT.  MM ONLY MENTIONS NAS1304-24H BOLT FOR INSTALLATION AND DEPICTS A WASHER UNDER THE BOLT HEAD IN THE ILLUSTRATION.

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