# SDR UPS07448863

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 2007
- Submitted: January 15, 2007
- Operation: Air carrier
- Aircraft: N522UP
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21936
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Warning Light
- Condition: False Activation
- Location: L1 Door
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS07448863

## Discrepancy

L1 DOOR INDICATION LIGHT CAME ON DURING CLIMB-OUT.  LOUD AIR NOISE IN C CARGO AREA.  INSPECTED L1 DOOR SEAL.  NO DAMAGE.  CYCLE L1 DOOR 5 TIMES.  NO FAULT FOUND, PRESSURIZING AIRCRAFT TO 2.0, DOOR WARNING LIGHT DID NOT COME ON.  OPS CHECK L1 ENTRY DOOR.  OK PER MM 52-11-01.

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