Service difficulty report · Angle · Boeing 737

Difficulty date
February 22, 2022
Submitted
March 28, 2022
Operation
Air carrier
Aircraft
N238WN
Make and model
Boeing 737
Aircraft serial
34713
Aircraft time
53,117 hours, 31,534 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

B.S. 663 LOWER COMPOSITE BULKHEAD UPPER ATTACH ANGLE IS CRACKED AT L.B.L. 8; W.L. 164. / [01] REMOVED ALL FASTENERS COMMON TO REPAIR AREA; AT BS 663; ON ATTACH ANGLE AT LBL8; WL 164. IAW. SRM 51-40-02-0G-O AND SRM 57-10-10-2R-5 REPAIR 5.;[02] PERFORMED CUTOUT ATTACH ANGLE AT BS663; LBL8; WL164. IAW.SRM SRM 57-10-10-2R-5 REPAIR 5; REPAIR INSTRUCTION 4. STEP B.;[04] VERIFIED REPAIR APPLICABILITY PER SRM 57-10-10-2R-5 REPAIR 5.[09] LOCATED AND DRILLED NEW SPLICE AND REPLACEMENT ANGLES IAW SRM 57-10-10-2R-5 REPAIR 5 PART 4.H; I. AND DRAWING# ATSHFAB-101-355 AND ATSHFAB-101-35312] FABRICATED NEWS SPLICE AND REPLACEMENT ANGLES REPAIR IAW SRM 57-10-10-2R-5 REPAIR 5 PART 4.J;K AND DRAWING# ATSHFAB-101-355 AND ATSHFAB-101-353.;[13] APPLIED CHEMICAL CONVERSION COATING AND PRIME ON REPAIR ANGLES IAW SRM 57-10-10-2R-5 REPAIR 5 PART 4.F;G;[14] VERIFIED CORRECTIVE ACTIONS 12; 13.;[15] PERFORMED A DETAILED INSPECTION OF THE REPAIR AREA AND THE UNDERLYING STRUCTURE AND NO DAMAGE WAS FOUND WITHIN THE REPAIR AREA. IAW. SRM 57-10-10-2R-5 REPAIR 5 PART 4.D. OK TO INSTALL REPAIR PARTS WITH FASTENERS.;[16] VERIFIED CORRECTIVE ACTION 15.;[17] INSTALLED REPAIR PARTS AND FASTENERS AT BS663; LBL8; W.L.164. IAW. SRM 57-10-10-2R-5 REPAIR 5 PART 4.L.(1)(2)(3)(4)(5)(6)(7).