# SDR Y2PA20130803049

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2013
- Submitted: August 7, 2013
- Operation: Air carrier
- Aircraft: [N831US](https://openairdocs.org/aircraft/N831US), registered now
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 49791
- Aircraft time: 51,284 hours, 29,243 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Switch
- Condition: Out Of Adjust
- Location: Cargo Door
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/Y2PA20130803049

## Discrepancy

CREW REPORTED THAT MAIN CARGO DOOR WARNING LIGHT ILLUMINATED DURING LEVEL FLIGHT AT FL350.  PERFORMED EMERGENCY PROCEDURE, DECLARED AN EMERGENCY AND DIVERTED.   PERFORMED A NORMAL APPROACH AND LANDING WITHOUT FURTHER INCIDENT.  MX FOUND THE LATCH LOCK PIN NOT ENGAGED.  ANNUNCIATOR ILLUMINATED ON CARGO DOOR CONTROL PANEL.  DOOR WAS LOCKED.  ADJUSTED NR 1 LATCH PIN SWITCH IAW MM 52-35-01.  TORQUED AND SAFETY WIRED SWITCH.  OPS CHECK OF THE MAIN CARGO DOOR SHOWED ALL LIGHTS AND OPERATION GOOD.  ACFT WAS RETURNED TO SERVICED.

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