What was found
DURING PREFLIGHT OBSERVER SEAT OXYGEN MASK "PRESS TO TEST" SWITCH GETS STUCK IN DOWN POSITION. REMOVED AND REPLACED 1ST OBSERVER OXY STORAGE BOX, OPS CK'S NORMAL.
- Difficulty date
- October 30, 2018
- Submitted
- October 31, 2018
- Operation
- Air carrier
- Aircraft
- N854FD
- Make and model
- Boeing 777FS2
- Aircraft serial
- 37725
- Aircraft time
- 32,797 hours, 5,107 cycles
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Switch
- Condition
- Defective
- Location
- Stowage Box
- 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.