# SDR UPS05445462

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2005
- Submitted: September 19, 2005
- Operation: Air carrier
- Aircraft: N683UP
- Make and model: Boeing 747121
- Aircraft serial: 20353
- System (JASC): [3416 · Altimeter, Barometric/Encoder](https://openairdocs.org/jasc/3416)
- Part: Warning System
- Condition: Inoperative
- Location: Altitude
- 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/UPS05445462

## Discrepancy

ALTITUDE ALERTING SYSTEM INOP.  RVSM A POSSIBILITY.  R/R ALTITUDE A;ERTER COMPUTER PER MM 34-16-00-PG 207. SYSTEM TEST GOOD PER MM 34-16-00-OR.

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