Service difficulty report · Indicator · Boeing 74747UF

Difficulty date
February 10, 2024
Submitted
February 12, 2024
Operation
Air carrier
Aircraft
N476MC
Make and model
Boeing 74747UF
Aircraft serial
29256
Aircraft time
96,336 hours, 17,710 cycles
Part
Indicator
Condition
False Indication
Location
Crew Oxygen
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

AIR TURNBACK DUE TO CREW O2 QUANTITY LOW (SUSPECT LEAK)(<P>PERFORMED LEAK CHECK FOR OXY BOTTLES / LINES / ALL MASKS, NO LEAK FOUND. R/R CREW OXYGEN VOLTAGE AVERAGING UNIT AND OPS / IND CHECK GOOD PER AMM 35-41-12.</P>)

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