# SDR UPS06M46458

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2006
- Submitted: March 20, 2006
- Operation: Air carrier
- Aircraft: [N276UP](https://openairdocs.org/aircraft/N276UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48579
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Switch
- Condition: Out Of Alignment
- Location: Cargo Fire Sys
- Stage of operation: IN
- How discovered: C
- Nature of condition: W, L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS06M46458

## Discrepancy

CARGO FIRE SYSTEM TEST DID NOT INITIATE WHEN FIRST IRS ALIGN SWITCH WAS ROTATED O NAV.  POSSIBILITY SOMEONE HAD ROTATED IRS ALIGN SWITCH TO NAV THEN OFF BEFORE THIS CREW ARRIVED ACFT, IF SO OPS IS NORMAL.  SYSTEM OPS CHECKS NORMAL 26-15-01-5MM.

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