Service difficulty report · Panel · Boeing 7377Q8

Difficulty date
May 8, 2022
Submitted
June 8, 2022
Operation
Air carrier
Aircraft
N7875A
Make and model
Boeing 7377Q8
Aircraft serial
29354
Aircraft time
50,797 hours, 27,672 cycles
Part
Panel
Condition
Delaminated
Location
L/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

L/W L/E PANEL 521DB HAS AREA OF DELAM (MARKED) / [01] IDENTIFIED PANEL 521DB MATERIAL IAW SRM 57-41-01-0I-1 FIGURE 5 TABLE 5 ITEM 2<BR><BR>DAMAGED AREAS EXCEED ALLOWABLE DAMAGE LIMITS IAW SRM 57-41-01-1A-1 PAR.4 A(2)<BR><BR>DAMAGE IS REPAIRABLE IAW SRM 51-70-05-2R-6 AS DIRECTED BY SRM 57-41-01-2R-1 PAR.4 B(2)<BR><BR>REMOVED (1EA) BACK-UP PLATES IAW SRM 51-40-02-0G-0 PAR.4 E<BR>REMOVED INNER FOIL PLY AND CLEANED PANEL IAW SRM 51-70-14-2R-3 PAR.4 A(1-2)<BR>REMOVED 2 AREAS OF DAMAGE MEASURING 5.4'X3'; AND 4.5'X3.5'; CLEANED WITH NO CONTAMINATION NOTED IAW SRM 51-70-05-2R-6 PAR.4 A-D5 ADHESIVE LOT 1491228-1 FABRICATED REPAIR PLIES ;LAID UP THE REPAIR ; VACUUM BAGGED LEAK CHECKED THEN SET TO CURE IAW SRM 51-70-05-2R-6 PARA 4 STEPS E & F .;[07] CURED REPAIR PLIES; REMOVED VACUUM BAG EQUIPMENT AND PREPARED FOR POST-REPAIR REQUIREMENTS PER SRM 51-70-05-2R-6 PARA 4.G.;[08] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 4; 5; 6 AND 7. POST REPAIR UT INSPECTED PER 737NDT PART 4 51-00-02. NO DEFECTS FOUND. TOOL E650 ATS2031 DUE 03/2023.;[09] RESTORE THE BONDED ALUMINUM FOIL : USING BMS8-289 FORM 1 GRADE B ALUMINUM FOIL LOT 1484605-1 & BMS5-128 /EA956 ADHESIVE LOT JH1LAA7523 FABRICATED THE REPAIR FOIL; CLEANED THE MATING SURFACE ; APPLIED THE ADHESIVE ; LAID UP THE REPAIR ; VACUUM BAGGED LEAK CHECKED THEN CURED THE REPAIR IAW SRM 51-70-14-2R-3 PARA 4 .A. STEPS (1)-(5) & (11). REF CAL TOOL HOT BONDER ID ATS883 SN 15112530 CAL DUE 10/2022.;

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