Service difficulty report · Skin · Boeing 737900ER

Difficulty date
April 20, 2023
Submitted
April 21, 2023
Operation
Air carrier
Aircraft
N69818
Make and model
Boeing 737900ER
Aircraft serial
42177
Aircraft time
29,611 hours, 10,745 cycles
Part
Skin
Part number
112A4102315
Condition
Corroded
Location
Lt O/B Sta 706
Stage of operation
IN
How discovered
O
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 LT O/B WING L/E F.S STA 706 AT LOWER CHORD REF AAR N/R 9670144 691.5 ON AIRCRAFT N69818 IN ACCORDANCE WITH PART 2 OF THE LATEST REVISION OF ECRA 5720-03324. ON OR BEFORE OCTOBER 12, 2024, PERFORME AN INSPECTION OF THE REPAIR TO THE LEFT WING LOWER INSPAR SKIN PANEL NUMBER 2 AT WSTA DIP 57-DIP TOMC REJECTED DUE TO THE INABILITY TO REVIEW WHAT THE ORIGINAL DISCREPANCY IS SINCE WE CANNOT VIEW AAR NON-ROUTINES. ALSO DIP LP IS POORLY WRITTEN AND REQUEST IS DIFFICULT TO UNDERSTAND. WSTA LOCATIONS DON''T MATCH WHAT IS WRITTEN ON THE LP AND ON ECRA 5720-03324. ACCOMPLISHED LT WING O/B L/E STA 706 LOWER CHORD INSPAR SKIN PANEL NO.2 INTERIM REPAIR REF AAR ESR 2020682-13-4206 WORK INSTRUCTIONS AND UNITED ECRA 5720-03324 1-19 DISPOSITION PART 1 OF 3 WORK ACCOMPLISHED V913189 THIS LP IS VOID AND CREAT A NEW LP WITH ADDITIONAL CORRECTED INFO

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