Service difficulty report · Panel · Boeing 7377Q8

Difficulty date
May 12, 2022
Submitted
June 16, 2022
Operation
Air carrier
Aircraft
N7876A
Make and model
Boeing 7377Q8
Aircraft serial
29355
Aircraft time
50,771 hours, 27,451 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

PANEL 621YB HAS DELAMINATED FWD EDGE / [01] IDENTIFIED PANEL 621YB MATERIAL ACCORDING TO SRM 57-41-01-0I-4; FIG. 2; TABLE 2; ITEM 1; AND FIG. 6; TABLE 8. FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 57-41-01-1A-1; PARA'S 2.B AND 4.A.(5) & (6); AND FIG. 106. AREA TO BE REPAIRED ACCORDING TO SRM 51-70-05-2R-6; AS REQUIRED BY SRM 57-41-01-2R-1; PARA'S 2; 4.B; AND TABLE 202. STRIPPED LOWER SURFACE PAINTS/PRIMERS; REMOVED UPPER SURFACE BONDED ALUMINUM FOIL; REMOVED DELAMINATED PLIES TO A REGULAR SHAPE; TAP TESTED AREAS (NO DISBONDS NOTED); REMOVED CONTAMINANTS FROM REPAIR AREA; ALL ACCORDING TO SRM 51-70-05-2R-6; PARA'S 4.A THRU 4.D.; AND SRM 51-70-14-2R-3. PARA. 4.A.(2).(B).[04] APPLIED REPAIR PLIES FABRICATED FROM BMS 8-139; ST 1581 FIBERGLASS (LOT# 1491914-1) AND BMS 5-154; GR 05 ADHESIVE (LOT# 1483752-1); VACUUM BAGGED UNIT FOR HEAT BLANKET CURE; ACCOMPLISHED VACUUM BLEED DOWN TEST (PASS); AND CURED REPAIR AREAS; ALL ACCORDING TO SRM 51-70-05-2R-6; PARA'S 4.E THRU 4.G. HOT BOND CONSOLE ID: ATS883; DUE: 10/2022[08] FABRICATED FOIL PLY FROM BMS8-289 LOT NUMBER 1484605-2; INSTALLED FOIL PLY WITH BMS5-128 LOT NUMBER JH1LAA7523; VACUUM BAGGED AND VERIFIED SATISFACTORY 5X5 USING VACUUM GAUGE ID: ATS2107 DUE: 09/2022; WORK PERFORMED IAW SRM 51-70-14-2R-3 PARAGRAPH 4.A.(3-4);(5).(A) AND (11).(A-J).

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