# SDR 98ZZZX128

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N721FF
- Make and model: Gulstm G1159A
- Aircraft serial: 421
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen Unit
- Part number: 8336102
- Condition: Failed
- Location: Cabin
- Part time: 948 hours
- Component: Scott
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX128

## Discrepancy

WHILE PERFORMING CABIN OXYGEN SYSTEM TEST, FOUND TEN MASKS IN SIX  PRESENTATION UNITS WITH NO OXYGEN FLOW AFTER PULLING LANYARD.  UNITS ARE MANUFACUTRED BY SCOTT AVIATION.

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