Service difficulty report · Crease Beam · Boeing 7377H4

Difficulty date
September 30, 2023
Submitted
October 24, 2023
Operation
Air carrier
Aircraft
N409WN
Make and model
Boeing 7377H4
Aircraft serial
27896
Aircraft time
72,749 hours, 43,518 cycles
Part
Crease Beam
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 694+7 LBL 62.25 WL 208 (MARKED)<[01] REMOVED CORROSION ON INNER CHORD BS 694+7 LBL 62.25 WL 208 IN THE AREA OF 1'X1'X0.013'. FOUND TO BE OUT OF LIMITS IAW SRM 53-40-13-1A-1;[02] REMOVED CORROSION ON INNER CHORD BS 694+7 LBL 62.25 WL 208 IN THE AREA OF 1'X1'X0.013'. FOUND TO BE OUT OF LIMITS IAW SRM 53-40-13-1A-1<BR>CORRECTED MEASURMENT TABLE.;[03] CERTIFIED EDIT;[04] UPDATED STEP 2;[05] VERIFIED CORRECTIVE ACTION STEPS 1 AND 2.;[06] UPDATED STEPS 3;4;[07] UPDATED STEP 5;[08] REMOVED CORROSION ON INNER CHORD BS 694+7 LBL 62.25 WL 208 IN THE AREA OF 1'X1'X0.013'. FOUND TO BE OUT OF LIMITS IAW SRM 53-40-13-1A-1. REMOVED AND REPLACED INNER CHORD BS670-732 IAW SRM 51-40-05 AND BOEING DWG 144A5900.ID:0002 REV: A;[09] VERIFIED CORRECTIVE ACTION ITEM 8. JOB COMPLETE.

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