Service difficulty report · Angle · Boeing 737*

Difficulty date
February 28, 2022
Submitted
March 16, 2022
Operation
Air carrier
Aircraft
N494WN
Make and model
Boeing 737*
Aircraft serial
33868
Aircraft time
58,429 hours, 34,783 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 ON LOWER ATTACH ANGLE AT STA 663 OUTBOARD SIDE OF RBL 45 / [01] RECEIVED -1 REPLACEMENT ANGLE FABRICATED ON WORKSHOP WORK ORDER 43273-6000-0005 AND -2 SPLICE ANGLE FABRICATED ON WORKSHOP WORK ORDER 43273-6000-0006 I/A/W EA NO.22-157-00638-WIP1 STEP 7A;[02] VERIFIED ITEM 1;[03] LOCATED AND DRILLED -1 AND -2 ANGLES IAW EA NO# 22-157-00638-WIP1 FIG 2.;[04] TRIMMED -1 AND -2 ANGLES TO FINAL SIZE I/A/W EA NO# 22-157-00638-WIP1 FIG 2.;[05] VERIFIED STEPS 3 & 4.;[06] VERIFIED MATERIAL FOR CUTOUT AREA INBD OF RELIEF HOLE TO BE 7075-T6-.100' ATAG# A37135 IAW SRM 57-10-10-2R-6 TABLE 201 AND EA# 22-157-00638-WIP3.;[07] VERIFIED ITEM 6;[08] FABRICATED -1 FILLER IAW SRM 57-10-10-2R-6 TABLE 201 AND FIG 202.;[09] INSPECTION CW STEP 8<BR><BR>OK TO TREAT AND PRIME;[10] OK TO INSTALL -1 AND -2 ANGLES;[11] TREATED AND PRIMED -1 FILLER IAW SRM 57-10-10-2R-6.;[12] INSPECTION CW STEP 11;[13] STARTED INSTALLING ALL REPAIR PARTS IAW EA# 22-157-00638 AND SRM 57-10-10-2R-6 AND SRM 57-10-10-2R-3 ALT 2.<BR>MIXED BMS5-95 TYPE 1 CLASS B 2 @ 1400 08 MAR 22. SQUEEZE OUT @ 2000 08 MAR 22. FINAK CURE @ 1400 10 MAR 22. ALL PERMANENT OR TEMPORARY FASTENERS INSTALLED BEFORE SQUEEZE OUT TIME.;[14] INSPECTION CW STEP 13;[15] CAP SEALED ALL TANK FASTENERS COMMON TO REPAIR INTERNALLY IAW EA# 22-157-00638 AND SRM 57-10-10-2R-3 ALT 2.;[16] VERIFIED STEP 15;[17] ALL STEPS COMPLETE 1-17 AND EA# 22-157-00638 WIP1; WIP2; WIP3; AND WIP4; AND FINAL ARE C/W;[18] VERIFIED STEP 17<BR>AUDIT C/W