Service difficulty report · Panel · Boeing 7378H4

Difficulty date
October 13, 2022
Submitted
October 28, 2022
Operation
Air carrier
Aircraft
N8507C
Make and model
Boeing 7378H4
Aircraft serial
41531
Aircraft time
20,008 hours, 9,579 cycles
Part
Panel
Condition
Damaged
Location
Zn 100 Fus Lower
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 193CR OUTER SKIN IS DISBONDED 6.5' FROM TOP EDGE AND 4.5' FROM L/E. / FOUND DELAMINATION DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-40-70-1A-1; PARA'S 2 AND 4.A.(6).<BR><BR>DAMAGED AREA WILL BE REPAIRED ACCORDING TO SRM 51-70-05-2R-1 AS REQUIRED BY SRM 53-40-70-2R-1; PARA. 4.B.(1); AND TABLE 201.<BR><BR>VISUALLY EXAMINED EXTENT OF DAMAGE; REMOVED DELAMINATED SKIN PLIES; REMOVED SURFACE CONTAMINANTS; PREPARED REPAIR AREA APPLICATION OF REPAIR PLIES; TAP TESTED AREA (NO DISBONDS NOTED); AND CLEANED REPAIR AREA; ALL ACCORDING TO SRM 51-70-05-2R-1 PARA'S 4.A AND 4.B.;[02] VALIDATED APPLICABILITY OF REPAIR TO BE COMPLETED IAW SRM 51-70-05-2R-1.;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2<BR><BR>VERIFIED MEASUREMENTS TABLE<BR><BR>VALIDATED REPAIR PER SRM 51-70-05-2R-1;[04] FABRICATED AND APPLIED REPAIR PLIES USING BMS 5-129 TY2 GR05 (LOT# 1501126-1) AND BMS 8-79 CL3 ST1581 (LOT# 1500439-1); VACUUM BAGGED UNIT FOR HEAT BLANKET CURE; ACCOMPLISHED VACUUM BLEED DOWN TEST (PASS); AND CURED REPAIR AREA; ALL ACCORDING TO SRM 51-70-05-2R-1; PARA'S 4.C THRU 4.F.<BR><BR>HOT BOND CONSOLE ID: ATS2802; DUE: 10/2023;[05] REQUESTING POST CURE NDI OF REPAIR IAW SRM 51-70-05-2R-1 PAR. 4.F.;[06] POST REPAIR UT INSPECTED PER 737NDT PART 4 51-00-02. NO DEFECTS FOUND. TOOL E600 ATS843 DUE 06/2023.;[07] INSPECTED AND VERIFIED CORRECTIVE ACTION 4.;[08] REFINISHED REPAIR AREA IAW SRM 51-70-05-2R-1 PARAGRAPH 4.G;

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