Service difficulty report · Regulator · Boeing 757222

Difficulty date
October 22, 2012
Submitted
November 21, 2012
Operation
Air carrier
Aircraft
N517UA
Make and model
Boeing 757222
Aircraft serial
24861
Aircraft time
76,387 hours, 23,419 cycles
Engine
Pwa PW2037
Part
Regulator
Part number
80316301
Part serial
405
Condition
Leaking
Location
Oxygen System
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.

What was found

OXY PRESS READING DROPS TO ZERO DURING OXY TEST THEN GRADUALLY RESTORES TO PRE-TEST READING. REPLACED BOTTLE REGULATOR PER AMM 35-11-03 AND O2 PRESSURE TRANSDUCER PER AMM. LEAK CHECKS GOOD AND TEST NORMAL.