Service difficulty report · Initiator · Boeing 7879

Difficulty date
March 18, 2025
Submitted
March 20, 2025
Operation
Air carrier
Aircraft
N45956
Make and model
Boeing 7879
Aircraft serial
40918
Aircraft time
43,985 hours, 4,395 cycles
Part
Initiator
Part number
444158002
Condition
Expired
Location
Oxygen Sys
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

FOUND THE FOLLOWING PAX OXYGEN CYLINDER INITIATORS EXPIRED. ALL PAX OXYGEN CYLINDER INITIATORS FOR ALL PAX OXY CYLINDERS FOUND SATISFACTORY IAW AMM 35-21-00. REPLACED FOUND SATISFACTORY IAW CMM 35-22-29 ALL SERVICE LIFE ALL PAX PSU RESTORED TO NORMAL. PERFORMED BY V941777 IN SIAEC MORE THAN 49 MONTHS TO EXPIRY.INSTALLATION TEST C/OUT FOUND SIN HGR. REFER TO NRC ELE0016/39557918 FOR DETAILS. SATISFACTORY EXCEPT 50 DEF WITH LED BUNKING (AMM 35-21-00), REFER ECRA 3520-01772 FOR INITIATORS REPLACEMENT.

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