Service difficulty report · Panel · Boeing 7377H4

Difficulty date
March 18, 2022
Submitted
April 20, 2022
Operation
Air carrier
Aircraft
N472WN
Make and model
Boeing 7377H4
Aircraft serial
33831
Aircraft time
58,559 hours, 34,804 cycles
Part
Panel
Condition
Delaminated
Location
R/H Wing
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

RT WING L/E PANEL 621DB HAS DELAMINATION ALONG L/E / [01] PART/MATERIAL IDENTIFIED PER SRM 57-41-01-0I-4 FIG 5 TABLE 5 ITEM 2 .<BR>DELAMINATION ALONG THE L/E EXCEEDS THE ALLOWABLE LIMITS AS GIVEN IN SRM 57-41-01-1A-1. PARA 4 A ZONE 1.<BR>REPAIR TO BE PERFORMED IAW SRM 51-70-05-2R-6 AS GIVEN IN SRM 57-41-01-2R-1 PARA 4 TABLE 202.[11] FABRICATED AND INSTALLED ALUMINUM FOIL PLY USING BMS 8-289 LOT# 1474984-1 AND BMS 5-128 ADHESIVE LOT#1486135-1 THEN VACUUM BAGGED; LEAK CHECKED GOOD USING VACUUM GAUGE ID:E11543 S/N: UNKNOWN; THEN CURED USING THERMOMETER ID:ATS2208 S/N:43300740WS; REMOVED BAGGING MATERIAL AND TRIMMED EXCESS; IAW SRM 51-70-14-2R-3 PARA 4.A.(4)(5)(A)1)4)5)(11)(A-I) INSTALLED 1EA BACKUP PLATE IAW SRM 51-40-02-0G-0 PARA 4B. AND DWG 116A9110;[12] RESTORED THE FINISH USING BMS10-103 PRIMER & BMS10-60 ENAMEL IAW SRM 51-70-05-2R-6 PARA 4 STEP I .;[13] RT WING PANEL 621DB DELAMINATION ALONG THE L/E WAS REPAIRED IAW SRM 51-70-05-2R-6 .;[14] FINAL INSPECTION. JOB COMPLETE PER SRM 51-70-05-2R-6.

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