Service difficulty report · Channel · Boeing 7377H4

Difficulty date
September 30, 2023
Submitted
October 20, 2023
Operation
Air carrier
Aircraft
N409WN
Make and model
Boeing 7377H4
Aircraft serial
27896
Aircraft time
72,749 hours, 43,518 cycles
Part
Channel
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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

WING CENTER SECTION - CORROSION ON INNER CHORD BS 705 LBL 62.25 WL 208 (MARKED)<[01] REMOVED CORROSION ON INNER CHORD BS 705 LBL 62.25 WL 208 IN THE AREA OF 1'X1'X0.012'. FOUND TO BE OUT OF LIMITS IAW SRM 53-40-13-1A-1;[02] REMOVED CORROSION ON INNER CHORD BS 705 LBL 62.25 WL 208 IN THE AREA OF 1'X1'X0.012'. FOUND TO BE OUT OF LIMITS IAW SRM 53-40-13-1A-1<BR>CORRECTED MEASUREMENT.;[03] CERTIFIED EDIT;[04] UPDATED STEP 3;[05] REMOVED CORROSION ON INNER CHORD BS 705 LBL 62.25 WL 208 IN THE AREA OF 1'X1'X0.012'. FOUND TO BE OUT OF LIMITS IAW SRM 53-40-13-1A-1. INNER CHORD TO REPLACED ON FAULT TTG8Q00NR5DB. FAULT COMPLETE.;[06] UPDATED MEASUREMENT TABLE;[07] VERIFIED COMPLETION OF ACTIONS 5 AND MEASUREMENT TABLE.

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