Service difficulty report · Switch · Boeing 74744AF

Difficulty date
November 9, 2023
Submitted
November 13, 2023
Operation
Air carrier
Aircraft
N573UP
Make and model
Boeing 74744AF
Aircraft serial
35662
Aircraft time
55,677 hours, 8,764 cycles
Part
Switch
Part number
UNKNOWN
Part serial
NA
Condition
Failed
Location
Unknown
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

FOUND L1 ENTRY DOOR WARNING SWITCH FAIL LOC: DOOR AFT-LOWER SIDE(REPLACE) I.A.W AMM 52-71-01-004-024 AND 52-71-01-404-047 REV.108 REPLACED THE L1 ENTRY DOOR WARNING SWITCH, AND PERFORMED THE DOOR WARNING SYSTEM TEST, RESULT WAS SATISFACTORY. REVIEW COMPLETE

More about the Boeing 747-44AF