What was found
CREW OXYGEN MASK REGULATOR TEST. CAPTAIN MASK REGULATOR UNIT HEAD HARNESS LEAKS WHEN TESTED. REMOVED AND REPLACED CAPTAIN MASK REGULATOR IAW AMM 35-12-85. OPS AND LEAK CHECKED OK.
- Difficulty date
- September 3, 2025
- Submitted
- September 5, 2025
- Operation
- Air carrier
- Aircraft
- N16709
- Make and model
- Boeing 737724
- Aircraft serial
- 28779
- Aircraft time
- 84,044 hours, 30,710 cycles
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Oxygen Mask
- Part number
- MC1025104
- Part serial
- 78037
- Condition
- No Test
- Location
- Zone 200
- Part time
- 68,500 hours, 23,903 cycles
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.