# SDR 2003FA0000765

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2003
- Submitted: August 5, 2003
- Operation: General aviation
- Aircraft: N5540P
- Make and model: Beech F33A
- Registry model: [Beech F33A](https://openairdocs.org/model/beech-f33a) (OpenAirDocs)
- Aircraft serial: CE1335
- Engine: Cont IO520BB
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Pump
- Part number: RA216CW
- Part serial: B4431
- Condition: Worn
- Location: Pnuematic Sys
- Part time: 387 hours
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2003FA0000765

## Discrepancy

INSTRUMENT AIR SYSTEM INDICATED LOW OUTPUT ON GAUGE.  UPON FURTHER INVESTIGATION OF PNUEMATIC SYSTEM FOUND INSTRUMENT AIR PUMP VANES WHERE WORN.  PROBABLE CAUSE IS A COMBINATION OF ENGINE HEAT AND CARBON VANE HARDNESS.

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