Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
April 17, 2022
Submitted
May 2, 2022
Operation
Air carrier
Aircraft
N200WN
Make and model
Boeing 7377H4
Aircraft serial
32482
Aircraft time
58,330 hours, 34,634 cycles
Part
Attach Angle
Condition
Cracked
Location
Keel
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

A-125-01 CRACK NOTED AT BS 663; LBL 09 UPPER ATTACH ANGLE (IN ECS BAY) FIRST FASTENER HOLE O/B OF LBL 07 KEEL BEEM / [01] HFEC IAW B737 NDT PART 6; 51-00-00 PROC 23. CRACK VERIFIED AND MARKED IN BLACK. TOOL#31823; DUE 23DEC22;[02] CUT AND REMOVED ATTACHED ANGLE IAW SRM 57-10-10-2R-5 REPAIR 5 FIG 202 SHEET 4; VERIFIED RECEIVED -1 ANGLE FROM BACKSHOP P/N 43595-5000-0001 W/O 43595-5000-0001;[06] VERIFIED RECEIVED -2 SPLICE FROM BACKSHOP P/N 43595-5000-0002 W/O 43595-5000-0002;[07] VERIFIED STEPS 5 AND 6;[08] VERIFIED ITEMS 5 THROUGH 7;[09] HFEC IAW B737 NDT PART 6; 51-00-00 PROC 16. NO DEFECTS NOTED. TOOL#31823; DUE 23DEC22;[10] ACCOMPLISHED DVI NO DEFECTS NOTED IAW SRM 57-10-10-2R-5 REPAIR 5;[11] FABRICATED REPAIR PARTS IAW SRM 57-10-10-2R-5 REPAIR OK GIVEN TO TREAT & PRIME;[15] ALODINED AND PRIMED REPAIR PARTS AND CUT EDGE IAW SRM 57-10-10-2R-5 REPIAR 5;[16] VERIFIED STEP 15;[17] VERIFIED STEPS 15 AND 16;[18] OK GIVEN TO INSTALL REPAIR PARTS;[19] INSTALLED REPAIR PARTS IAW SRM 57-10-10-2R-5 REPAIR 5;[20] VERIFIED STEP 19;[21] VERIFIED ITEM 19; OK TO CAP SEAL.;[22] CAP SEALED EXTERNAL FASTENERS AND FILLET SEALED REPAIR PARTS IAW SRM 57-10-10-2R-5 REPAIR 5;[23] CAP SEAL INTERNAL CENTER FUEL TANK FASTENERS;[24] VERIFIED STEPS 22 AND 23;[25] VERIFIED ITEM 22. INTERNAL NOT SEALED AT THIS TIME;[26] OK TO CIC;[27] APPLIED CIC TO REPAIR IAW SRM 57-10-10-2R-5 REPAIR 5;CAP SEALED INTERNAL FASTENERS IN CENTER TANK IAW SRM 57-10-10-2R-5;

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