# SDR SWIA2026041475691

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2026
- Submitted: April 15, 2026
- Operation: Air carrier
- Aircraft: [N904EV](https://openairdocs.org/aircraft/N904EV), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7628
- Aircraft time: 47,743 hours, 44,291 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MF100801
- Condition: Leaking
- Location: Zone 200
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA2026041475691

## Discrepancy

OBERSERVOR O2 MASK HAS LEAK. STARTED IN CRUISE COULDN€™T STOP LEAK.  (FLIGHT 6064 - FILED CLOSED)REMOVED AND REPLACED CREW OBSERVER OXYGEN MASK ASSY IN REFERENCE TO AMM 35-11-12. REMOVED AND REPLACED CREW OBSERVER OXYGEN MASK STOWAGE BOX ASSY IN REFERENCE TO AMM 35-11-15. PERFORMED LEAK CHECKS OF CREW OBSERVER OXYGEN MASK STOWAGE BOX AND MASK ASSY AS REQUIRED. LEAK CHECK GOOD AT THIS TIME. PERFORMED OPERATIONAL CHECK OF CREW OXYGEN SYSTEM IN REFERENCE TO AMM 35-10-00. OPS CHECK GOOD AT THIS TIME. AIRCRAFT OK FOR SERVICE. REF EAML 1866326 FOR CREW O2 BOTTLE REMOVAL AND REPLACEMENT.

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