# SDR 9623599978

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N9342
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47391
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Switch
- Condition: Inoperative
- Location: Aft Stair
- Stage of operation: CL
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9623599978

## Discrepancy

AFTER TAKEOFF DTW-GSO, THE AFT STAIRWAY DOOR WARNING LIGHT ILLUMINATED.  RETURNED TO DTW WITHOUT FURTHER INCIDENT.  REPLACED THE LEFT AFT STAIR UPLOCK SWITCH.  WARNING SYSTEM CHECKED OK.

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