# SDR DALA13005300986

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2013
- Submitted: January 31, 2013
- Operation: Air carrier
- Aircraft: N986DL
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 53313
- Aircraft time: 55,674 hours, 40,779 cycles
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen System
- Condition: Malfunctioned
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA13005300986

## Discrepancy

THE PASSENGER OXYGEN SYS IN THE CABIN FAILED TO DEPLOY, IN MANUAL OR IN AUTOMATIC MODE, WHEN TESTED. ONLY THE LT ROW, FROM SEAT 1 TO THE OVER-WING EXITS, FUNCTIONED.  MX FOUND A WIRE (W636E220) HAD SHORTED TO GROUND AT TERMINAL NR 8 ON STRIP 53-154. THE CORRECTIVE ACTION WAS TO RE-SEAT THE PSU CONNECTOR AT ROW 2. OPS CHECK OF THE PASSENGER OXYGEN SYS WAS SATISFACTORY PERFORMED IN BOTH MANUAL AND AUTOMATIC DEPLOY MODES. THE ACFT HAS RETURNED TO SERVICE.

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