Service difficulty report · Panel · Boeing 7378

Difficulty date
February 4, 2023
Submitted
February 14, 2023
Operation
Air carrier
Aircraft
N8714Q
Make and model
Boeing 7378
Aircraft serial
36934
Aircraft time
11,329 hours, 4,925 cycles
Part
Panel
Condition
Delaminated
Location
Zn 600 Right Win
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

#2 ENGINE PYLON PANEL 444AL IS DELAMINATED AT AFT LOWER CORNER< PANEL TO BE OUT OF ALLOWABLE DAMAGE LIMITS ACCORDING TO SRM 54-50-70-1A-3; PARA'S 2.A.(4); AND 4.A.(4).<BR><BR>AREA OF DAMAGE IS TO BE REPAIRED ACCORDING TO SRM 51-70-05-2R-6; AS REQUIRED BY SRM 54-50-70-2R-3; PARA'S 2.C; 4.B.(2); AND TABLE 202.<BR><BR>REMOVED DELAMINATED PLIES TO A REGULAR SHAPE; TAP TESTED AREAS (NO DISBONDS NOTED); REMOVED CONTAMINANTS FROM REPAIR AREA; AND PREPARED AREA FOR APPLICATION OF REPAIR PLIES; ALL ACCORDING TO SRM 51-70-05-2R-6; PARA'S 4.A AND 4.D.;] CLEANED REPAIR AREA; FABRICATED AND APPLIED REPAIR PLIES FROM BMS 8-139; ST 1581 FIBERGLASS (LOT# 1507054-1) AND BMS 5-154; GR 05 ADHESIVE (LOT# 1515856-1); VACUUM BAGGED UNIT FOR HEAT BLANKET CURE; ACCOMPLISHED VACUUM BLEED DOWN TEST (PASS); CURED REPAIR AREA; REMOVED ALL BAGGING MATERIALS; AND LIGHTLY SANDED THE REPAIR AREAHOT BOND CONSOLE ID: NCX000526; DUE: 11/2023;[05] INSPECTED AND VERIFIED CORRECTIVE ACTION 4.;[06] REQUEST NDI FOR UT DISBOND CHECK IAW SRM 51-70-05-2R-6 PARA 4.H;[07] UT INSPECTED POST CURE IAW 737 NDTM PART 4 51-00-02. <BR>NO DISBONDS NOTED.<BR>EQUIP USED: <BR>-EPOCH 650 ID: ATS2031 CAL DUE: 03/23;[08] APPLIED AND CURED CONDUCTIVE COATING;REFINISHED IAW AMM 51-21-99-300-802 PARA 3.C(1)(A-E)<BR><BR>REPAIR DELAMINATION AT AFT LOWER CORNER ON #2 ENGINE PYLON PANEL 444AL IAW SRM 51-70-05-2R-6;

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