# SDR AALA991184

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N1457B
- Make and model: Fokker F.28 MK 0100
- Registry model: [Fokker F.28 MK 0100](https://openairdocs.org/model/fokker-f-28-mk-0100) (OpenAirDocs)
- Aircraft serial: 11469
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen Mask
- Part number: 17408075
- Condition: Deployed
- Location: Cabin
- Stage of operation: UK
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA991184

## Discrepancy

ORD - FLT 879 - OXYGEN MASKS DID NOT DROP AT SEATS 5A, 7A, AND 18A WHEN PASSENGER OXYGEN DEPLOYMENT SWITCH WAS INADVERTENLY ACTIVATED WITH AIRCRAFT ON THE GROUND.  REPACKED ALL MASKS AND SUCCESSFULLY TESTED DROP SYSTEM.  SYSTEM GROUND CHECKED NORMAL OPERATION.  (M)

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