# SDR 98ZZZX3362

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N547AL](https://openairdocs.org/aircraft/N547AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53240
- Engine: Allsn 250C47B
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bolt
- Part number: MS200760317
- Condition: Loose
- Location: Bleed Valve
- Part time: 664 hours
- Component: 23005366
- 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/98ZZZX3362

## Discrepancy

BLEED VALVE WAS SET UP ON TEST BENCH AND A RE-ALIGNMENT OF 90 DEGREE ELBOW WAS NEEDED TO INSTALL TEST ORIFICE AND JUMPER TUBE AND NOTICED THAT UPON SLIGHT TENSION, BOLT WHICH WAS SAFTIED, MOVED.  THESE BOLTS HAVE A 30 TO 35 INCH/POUND TORQUE ATTACHED AND UPON FAILURE FOR TORQUING CORRECTLY, THIS CAUSES EXCESSIVE AIR LEAKAGE ON LEAK TEST.

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