What was found
FIRST OFFICER`S OXYGEN MASK WOULD NOT TEST DURING PRE-FLIGHT. PULLED THE MASK OUT AND AFTER 1-2 MINUTES OF TESTING IT STARTED WORKING. REMOVED AND REPACKED THE OXYGEN MASK IN STORAGE BOX. OPS CHECKED GOOD IAW MM 35-11-00.
- Difficulty date
- July 18, 2020
- Submitted
- July 21, 2020
- Operation
- Air carrier
- Aircraft
- N1399A
- Make and model
- Boeing 767306
- Aircraft serial
- 27959
- Aircraft time
- 91,636 hours, 17,757 cycles
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Oxygen Mask
- Condition
- Malfunctioned
- Location
- First Officer'S
- Stage of operation
- TX
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.