# SDR CALA2013092491407

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2013
- Submitted: September 27, 2013
- Operation: Air carrier
- Aircraft: [N648UA](https://openairdocs.org/aircraft/N648UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25285
- Aircraft time: 89,268 hours, 14,173 cycles
- Engine: Pwa PW4060
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: S242T210211
- Part serial: 195
- Condition: Faulty
- Location: Nr 1
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2013092491407

## Discrepancy

FIRST OFFICERS ALTIMETER CONSISTENTLY 150 FEET LOWER THAN CAPTAINS ALL ALTITUDES WHOLE FLIGHT.  R & R  CAPTAIN`S ADC.  OPERATIONS CHECKED NORMAL.  TEST 30-40 PASSED.  IDT REQUIRED FOR PITOT-STATIC QUICK DISCONNECT-RECONNECT.

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