Service difficulty report · Transducer · Boeing 777222

Difficulty date
July 29, 2010
Submitted
August 4, 2010
Operation
Air carrier
Aircraft
N774UA
Make and model
Boeing 777222
Aircraft serial
26936
Aircraft time
59,041 hours, 11,500 cycles
Engine
Pwa PW4077
Part
Transducer
Part number
831G25020R
Condition
Reads Low
Location
Oxygen System
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CREW OXYGEN LOW EICAS O2 PRESS FLUCTUATING FROM 0 TO +1600. CHECKED O2 VALVE IS OPENED AND PRESSURE IS 1750 PSI. INSTALLED NEW TRANSDUCER, READING ARE MATCHING TANK AND FILLER. NO FLUCTUATING.