Service difficulty report · Skin · Boeing 7378H4

Difficulty date
April 21, 2022
Submitted
May 2, 2022
Operation
Air carrier
Aircraft
N8321D
Make and model
Boeing 7378H4
Aircraft serial
36687
Aircraft time
31,939 hours, 14,343 cycles
Part
Skin
Condition
Debonded
Location
Fuselage
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

INNER SKIN DISBONDED FROM CORE. MARKED IN RED. / [01] IDENTIFIED PANEL 193CR IAW SRM 53-40-70-0I-1 FIGURE 2; SHEET 1; TABLE 2; ITEM 9.<BR><BR>DAMAGE NOTED IS OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-40-70-1A-1 PAR 4A(6).<BR><BR>REPAIR TO BE ACCOMPLISHED IAW SRM 51-70-05-2R-1 PER SRM 53-40-70-2R-1 PAR 4B(1).;[02] REMOVED DAMAGE FROM INNER SURFACE FACE SHEET; AS MARKED; CLEANED. NO CORE DAMAGE NOTED IAW SRM 51-70-05-2R-1 PAR 4A-B.;[03] VALIDATED APPLICABILITY OF REPAIR TO BE COMPLETED IAW SRM 51-70-05-2R-1.;[04] VERIFIED CORRECTIVE ACTION 1-3;[05] FABRICATED REPAIR PLIES OUT OF BMS 8-79 ST 1581 LOT#1488444-1; AND BMS 5-129 GR5 LOT#1483751-1; INSTALLED IAW SRM 51-70-05-2R-1 PAR 4C.;[06] VACUUM BAGGED PLIES AND VERIFIED A SATISFACTORY 5X5 USING VACUUM GAUGE ID ATS2441 S/N UNKNOWN; WORK ACCOMPLISHED IAW SRM 51-70-05-2R-1 PARAGRAPH 4.D.;[07] CURED REPAIR PLIES USING OVEN ID:E11561 S/N:UNKNOWN; MONITORED USING HEATCON HOTBONDER ID:ATS885 S/N:15112558; UNBAGGED IAW SRM 51-70-05-2R-1 PAR 4E-F.;[08] VERIFIED CORRECTIVE ACTION ITEM 5-7; CURED.;[09] UT INSPECTED POST CURE IAW 737 NDTM PART 4 51-00-02; NO DISBONDS NOTED DURING TIME OF INSPECTION.<BR>EQUIPMENT USED:EPOCH 650 ID:2342;[10] REFINISHED PANEL IAW SRM 51-70-05-2R-1 PAR 4G AND AMM 51-21-99-300-802 PAR 3C(1). <BR><BR>COMPLETED SRM REPAIR 51-70-05-2R-1.;[11] VERIFIED CORRECTIVE ACTION 10

More about the Boeing 737-8H4