# SDR 99ZZZX2989

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N91381
- Make and model: Mooney M20J
- Registry model: [Mooney M20J](https://openairdocs.org/model/mooney-m20j) (OpenAirDocs)
- Aircraft serial: 243237
- System (JASC): [3411 · Pitot/Static System](https://openairdocs.org/jasc/3411)
- Part: Tube
- Condition: Misinstalled
- Location: Pitot System
- Part time: 397 hours
- Stage of operation: NR
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX2989

## Discrepancy

THE PITOT TUBING IN THE CABIN WAS IMPROPERLY ROUTED CAUSING THE TUBING TO BE CRUSHED BETWEEN THE CABIN STEEL FRAME AND THE LEFT SIDE SKIN.  THIS CAUSED A RESTRICTION OF PRESSURE TO THE AIRSPEED INDICATOR RESULTING IN INCORRECT INDICATIONS TO THE PILOT.  THIS AIRCRAFT WAS INVOLVED IN A LANDING ACCIDENT WHICH DAMAGED THE AIRCRAFT TO A TOTAL LOSS.  THE PITOT TUBING CONDITION MAY HAVE HIGHER THAN WAS INDICATED TO THE PILOT.

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