# SDR WIB2001F00000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2001
- Submitted: September 4, 2001
- Operation: Air carrier
- Aircraft: N81MR
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 622
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Shutoff Valve
- Part number: 322867003
- Part serial: 09850007
- Condition: Leaking
- Location: Bleed Air
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WIB2001F00000

## Discrepancy

MAINTENANCE PERSONNEL DETECTED BLEED AIR LEAK IN TAILCONE DURING GROUND OPERATION.  TRACED SOURCE TO CENTER MATING SURFACES OF WINDSHIELD ANTI-ICE SHUTOFF VALVE.  REPLACED VALVE WITH OVERHAULED UNIT.  PROBABLE CAUSE:  BLOWN GASKET IN VALVE.

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