# SDR DALA2023031702002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2023
- Submitted: March 17, 2023
- Operation: Air carrier
- Aircraft: [N188DN](https://openairdocs.org/aircraft/N188DN), registered now
- Make and model: Boeing 767332
- Aircraft serial: 27583
- Aircraft time: 114,001 hours, 17,037 cycles
- System (JASC): [3416 · Altimeter, Barometric/Encoder](https://openairdocs.org/jasc/3416)
- Part: Unknown
- Condition: Unknown
- Stage of operation: IN
- 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/DALA2023031702002

## Discrepancy

SHIP 188 -RVSM- ALT DISAGREE EICAS MESSAGE AT FL360 ALTIMETERS FLUCUATING BETWEEN 120' AND 250' OFF. CORRECTIVE ACTION: R&R LEFT AIR DATA COMPUTER PER AMM B767-300 34-12. PERFORMED MCDP TEST 30 PER AMM 22-00. ALL TEST PASSED. (4163562)

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