# SDR SWAA115845

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2011
- Submitted: August 17, 2011
- Operation: Air carrier
- Aircraft: [N359SW](https://openairdocs.org/aircraft/N359SW), registered now
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 26596
- Aircraft time: 62,809 hours, 53,614 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: H6480B43
- Part serial: J0883
- Condition: Faulty
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA115845

## Discrepancy

AIR TURNBACK - AT ROTATION ON TAKEOFF FIRST OFFICER'S FLIGHT INSTRUMENTS BECAME UNRELIABLE.  AIRSPEED INDICATOR FROZEN AT 132.  ALTIMETER CLIMBED TO FL 23D.  NO FLAGS AT ANY TIME.  REMOVED AND REPLACED AIR DATA COMPUTER PER MM.

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