Service difficulty report · Panel · Boeing 7377H4

Difficulty date
July 20, 2022
Submitted
August 22, 2022
Operation
Air carrier
Aircraft
N490WN
Make and model
Boeing 7377H4
Aircraft serial
32476
Aircraft time
59,880 hours, 35,571 cycles
Part
Panel
Condition
Delaminated
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

PANEL 193CL HAS A DELAMINATED DENT ON THE EXTERNAL SKIN / [01] IDENTIFIED PANEL 193CL MATERIAL ACCORDING TO SRM 53-40-70-0I-4; FIG. 2; TABLE 2; ITEM 9. FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-40-70-1A-1; PARA'S 2.D AND 4.A.(6); AND FIG. 102. AREAS TO BE REPAIRED ACCORDING TO SRM 51-70-05-2R-2; AS REQUIRED BY SRM 53-40-70-2R-1; PARA'S 2; 4.B.(1); AND TABLE 201. STRIPPED SURFACE FINISHES IN REPAIR AREA; 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-2; PARA'S 4.A THRU 4.C.[04] APPLIED BMS 5-28; TY 7 POTTING COMPOUND TO EXPOSED CORE (LOT# AK1AP8072K); CURED APPLIED POTTING COMPOUND; SANDED POTTING COMPOUND FLUSH WITH THE SURROUNDING AREAS; CLEANED ALL REPAIR AREAS; THEN FABRICATED REPAIR PLIES FROM BMS 8-79; ST 1581 FIBERGLASS (LOT# 1495932-1); AND BMS 5-129; GR 05 ADHESIVE (LOT# 1494556-1); ALL ACCORDING TO SRM 51-70-05-2R-2; PARA. 4.D.; AND SRM 51-70-05;2R-11; PARA'S 4.A THRU 4.D. REQUEST OK TO LAYUP.13] ACCOMPLISHED UT POST REPAIR INSPECTION OF REPAIR AREA NO DISBONDS NOTED IAW 737 NDTM PART 4; 51-00-02 TOOL# ATS843 CAL. DUE 06/2023.

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