# SDR UALA2012122707422

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 26, 2012
- Submitted: February 1, 2013
- Operation: Air carrier
- Aircraft: N510UA
- Make and model: Boeing 757222
- Aircraft serial: 24780
- Aircraft time: 76,086 hours, 23,229 cycles
- Engine: Pwa PW2037
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 4040800911
- Part serial: 178
- Condition: Faulty
- Location: Nr 1
- Stage of operation: CR
- 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/UALA2012122707422

## Discrepancy

AIRSPEED INDICATOR DISAGREE, FLIGHT DIVERTED.  TRIPPED ON LEFT STAB TRIM & ELEV LIMIT MODULE.  REPLACED LEFT ADC AND RESET LEFT SAM.

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