What was found
COPILOT'S OXYGEN MASK HAS A LEAK. SWAPPED F-O O2 MASK WITH FIRST OBSERVER'S SEAT. F-O O2 MASK CHECKED, NO LEAK. F-O O2 MASK CHECKED. NO LEAK WHEN IT IS STOWED IN THE BOX. FIRST OBSERVER'S O2 MASK INOP AND SEAT CONSIDERED INOP.
- Difficulty date
- March 22, 2010
- Submitted
- March 25, 2010
- Operation
- Air carrier
- Aircraft
- N584UA
- Make and model
- Boeing 757222
- Aircraft serial
- 26706
- Aircraft time
- 55,900 hours, 19,488 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Oxygen Mask
- Part number
- MC1019151
- Part serial
- 887
- Condition
- Faulty
- Location
- 1st Observer
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.