# SDR CA000706026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 18, 2000
- Submitted: January 19, 2001
- Operation: General aviation
- Make and model: Aerosp AS 355F1
- Registry model: [Aerosp AS 355F1](https://openairdocs.org/model/aerospatiale-as-355f1) (OpenAirDocs)
- Aircraft time: 4,395 hours
- Engine: Allsn 250C20F
- System (JASC): [6420 · Tail Rotor Head](https://openairdocs.org/jasc/6420)
- Part: Housing
- Part number: 350A33211905
- Condition: Sheared
- Location: T/R Drive Shaft
- Part time: 898 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA000706026

## Discrepancy

(CAN) DURING HUB REMOVAL TO C/W SB 65.00.38 (T/R SPYDER BEARING KIT INSTALLATION) THE KEY THAT ALIGNS HUB TO T/R SHAFT WAS FOUND SHEARED & THE HUB HAD SPUN APPROX. 110 DEGREES. THE T/R LONG DRIVE SHAFT P/N 350A34-0110-07 WAS FOUND TO HAVE AN APPROX 60 DEGREES TWIST IN IT.  FOLLOWING PARTS WERE REPLACED DUE TO SUSPECT T/R STRIKE. LONG DRIVE SHAFT, T/R HUB, T/R GEAR BOX, T/R HUB BOLT,  T/R BLADES,  T/R COUPLE MGBOLTS, EXPANDABLE PIN, SPLIT BUSHINGS,  T/R PITCH LINKS.

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