# SDR DALA1223370988

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2012
- Submitted: April 16, 2012
- Operation: Air carrier
- Aircraft: N988DL
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 53339
- Aircraft time: 52,489 hours, 38,205 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Fastener
- Condition: Loose
- Location: Apu
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA1223370988

## Discrepancy

AFTER TAKEOFF FLIGHT CREW NOTED SMOKE IN THE CABIN & COCKPIT.  CREW DECLARED AN EMERGENCY AND RETURNED TO GCM.  MAINTENANCE FOUND APU INLET CONTAMINATED WITH OIL DUE TO A LEAK AT THE SIGHT GLASS & THE FILL HOUSING TO GEARBOX SPLIT LINE.  MAINTENANCE RETORQUED SIGHT GLASS AND FILLER MOUNT HARDWARE, NO FURTHER LEAK NOTED.  MAINTENANCE CLEANED APU INLET DOOR ASSY & SURROUNDING AREA.  PACK BURNOUT PERFORMED AND THE AIRCRAFT RETURNED TO SERVICE.

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