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
Cracked
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 621PB FWD O/B CORNER IS CRACKED / [01] PART/MATERIAL IDENTIFIED PER SRM 57-41-01-0I-4 FIGURE 3 TABLE 3 ITEM 1 .<BR>FURTHER EXAMINATION FOUND 3 ADDITIONAL DAMAGED AREAS ALONG THE EDGE BAND AT FASTENER HOLES THAT EXCEED THE ALLOWABLE DAMAGE LIMITS AS GIVEN IN SRM 57-41-01-1A-1 PARA 4 A ZONE 1.<BR><BR>REPAIRS TO BE PERFORMED IAW SRM 51-70-05-2R-6 AS GIVEN IN SRM 57-41-01-2R-1 PARA 4 F TABLE 202 .;[07] CURED THE REPAIRS IAW SRM 51-70-05-2R-6 PARA 4 STEP G.<BR>REF CAL TOOL HOT BONDER ID NCX000526 SN 12051216 .;[10] ALUMINUM FOIL PLY WAS MISSING FABRICATED AND INSTALLED NEW 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:ATS2107 S/N: UNKNOWN; THEN CURED USING THERMOMETER ID: ATS2208 S/N:43300740WS IAW SRM 51-70-14-2R-3 PARA 4.A.(4)(5)(A)1)4)5)(11)(A-I)

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