Service difficulty report · Angle · Boeing 7377H4

Difficulty date
March 29, 2022
Submitted
April 11, 2022
Operation
Air carrier
Aircraft
N497WN
Make and model
Boeing 7377H4
Aircraft serial
32479
Aircraft time
58,669 hours, 34,690 cycles
Part
Angle
Condition
Cracked
Location
Center 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

CRACK FOUND IN A/C BAY ON UPPER ATTACH ANGLE AT STA 663 RBL 8 / [01] REMOVED ALL FASTENERS AND TRIMMED OUT DAMAGED SECTION OF ATTACH ANGLE IAW SRM 57-10-10-2R-5;[02] PERFORMED DETAILED VISUAL INSPECTION OF REPAIR AREA; NO DEFECTS NOTED IAW SRM 57-10-10-2R-5;[03] RECEIVED -1 REPLACEMENT ANGLE FABRICATED ON BACKSHOP W/O 43508-5000-0002 AND -2 SPLICE ANGLE FABRICATED ON BACKSHOP W/0 43508-5000-0001 IAW SRM 57-10-10-2R-5;[04] VERIFIED STEPS 1 - 3 ARE COMPLETE;[05] VERIFIED STEPS 1-4;[06] HFEC IAW B737 NDT PART 6; 51-00-00 PROC 16. NO DEFECTS NOTED. TOOL#31823; DUE 23DEC22;[07] COMPLETED FABRICATION OF REPAIR PARTS IAW SRM 57-10-10-2R-5;[08] VERIFIED STEP 7 IS COMPLETE;[09] VERIFIED STEPS 7 AND 8;[10] OK TO TREAT AND PRIME;[11] ALODINED AND PRIMED -1; AND -2 ANGLES IAW B737 SRM 57-10-10-2R-5; REPAIR 5. STEP 4; ITEMS F AND G. ALSO PRIMED ANY BARE METAL EDGES.;[12] VERIFIED STEP 11;[13] OK GIVEN TO INSTALL REPAIR PARTS;[14] INSTALLED REPAIR PARTS WITH PERMANENT FASTENERS IAW B737 SRM 57-10-10-2R-5;[15] VERIFIED ITEM 11 OK TO CAP SEAL FASTENERS;[16] PERFORMED ELECTRICAL RESISTANCE CHECK OF THE ELECTRICAL BONDING FASTENERS; BOND CHECK GOOD IAW SRM 57-10-10-2R-5<BR>TOOL# 30318 CAL. DUE: 10/27/2022;

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