# SDR DXTA2011070904651

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2011
- Submitted: July 11, 2011
- Operation: Air carrier
- Aircraft: [N937QS](https://openairdocs.org/aircraft/N937QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500137
- Aircraft time: 9,693 hours, 6,010 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 7014700607
- Part serial: 00073924
- Condition: Malfunctioned
- Part time: 9,684 hours, 6,003 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2011070904651

## Discrepancy

CLIMBING OUT OF 15,000 MSL, 270KIAS, AURAL OVER-SPEED SOUNDED.  NO CAS MESSAGES PRESENT.  PULLED AND RESET WARN AUDIO 1 AND WARN AUDIO 2 WITH NEGATIVE RESULTS.    INSTALLED AIR DATA COMPUTER NR 1 REF MM 34-11-01.  COMPLIED WITH LEAK TESTS IAW THE MM 34-90-10 AND FAR 91.411.  COMPLIED WITH ALTITUDE CORRELATION TESTS IAW FAR 43 APP E PARA C.  ALL TESTS PASSED.  ACCOMPLISHED TEST OF OVERSPEED WARNING SYS IAW THE MM 34-90-10. ALL TESTS PASS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.