Service difficulty report · Structure · Boeing 73779P

Difficulty date
December 16, 2022
Submitted
February 7, 2023
Operation
Air carrier
Aircraft
N7855A
Make and model
Boeing 73779P
Aircraft serial
29357
Aircraft time
53,057 hours, 34,450 cycles
Part
Structure
Part number
NOTREPORTED
Part serial
NOTREPORTED
Condition
Corroded
Location
Zn 900 Lav/Galle
Stage of operation
IN
How discovered
9
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

CORROSION FLOOR STRUCTURE INNER CHORD LOCATED BS947.5 TO BS986.5 AT LBL49 AND WL208.1 AFT GALLEY AND LAV 2022-696969<[01] TOOL USED: ULTRASONIC EQUIPMENT; P/N: 45 MG; S/N: 130063701; DUE DATE: 16-JUN-23.;[02] INNER CHORD HAS BEEN REPLACED ON OTHER FAULT AND IS DOCUMENTED ON TTG8Q00GQ5AG SEE INDIVIDUALS SIGN OFF BELOW;[03] INNER CHORD HAS BEEN REPLACED ON OTHER FAULT AND IS DOCUMENTED ON TTG8Q00GQ5AG SEE INDIVIDUALS SIGN OFF BELOW

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