# SDR IPXA2017042116332

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2017
- Submitted: April 21, 2017
- Operation: Air carrier
- Aircraft: [N252UP](https://openairdocs.org/aircraft/N252UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48768
- Aircraft time: 53,322 hours, 11,432 cycles
- System (JASC): [3416 · Altimeter, Barometric/Encoder](https://openairdocs.org/jasc/3416)
- Part: Altimeter
- Condition: Inaccurate
- Location: Standby
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2017042116332

## Discrepancy

AT 38,000 FT. CAPTAIN`S ALTIMETER READS 38,020, FIRST OFFICER'S ALTIMETER READS 38,000 AND STBY ALTIMETER READS 38,360.  REPLACED THE STANDBY ALTIMETER/AIRSPEED INDICATOR IAW MM 34-11-06-400-801.

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