Service difficulty report · Angle · Boeing 737

Difficulty date
November 30, 2021
Submitted
April 28, 2022
Operation
Air carrier
Aircraft
N455WN
Make and model
Boeing 737
Aircraft serial
32462
Aircraft time
58,698 hours, 34,771 cycles
Part
Angle
Part number
111A1322U5
Condition
Cracked
Stage of operation
IN
How discovered
O
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

SUPPLEMENTAL INFORMATION: B.S. 663 VAPOR BARRIER UPPER ATTACH ANGLE IS CRACKED AT L.B.L. 8 AND 42; W.L. 160. ; / [01] EVALUATED CRACK ON VAPOR BARRIER UPPER ATTACH ANGLE AND FOUND TO BE OUT OF LIMITS DUE TO EXCEEDS ALLOWED DAMAGE LIMITS; CRACK LENGTH L=1.0'' TOOL USED CALIPER ID ATS2501 S/N A19335647 IAW SRM 57-10-10-1A-2; [02] ACCOMPLISHED CUT OUT VAPOR BARRIER UPPER ATTACH ANGLE IAW SRM 57-10-10-2R-5 REPAIR 5 PART 4B. <BR>REQUIRED A DVI ON REPAIR AREA AND UNDERLYING STRUCTURE TO MAKE SURE NO DEFECT ON REPAIR AREA IAW SRM 57-10-10-2R-5 REPAIR 5 PART 4DREQUESTED HFEC TO VERIFY POSSIBLE CRACK ON VAPOR BARRIER UPPER ATTACH ANGLE OF BS 663 AT LBL 37 WL 160; [08] HFEC INSPECTED UPPER ATTACH ANGLE IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; VERIFIED CRACK ON ANGLE AT BS 663 LBL 37 WL 160. <BR>EQUIP ID#: IS000450 S/N: N500D000M120071; [09] REMOVED BS 663 VAPOR BARRIER UPPER ATTACH ANGLE FROM LBL6-LBL72 IAW SRM 51-40-02; [10] LOCATED AND DRILLED NEW SUPPORT ANGLE P/N 111A1322U5 AT BS 663 VAPOR BARRIER UPPER ATTACH BETWEEN LBL 5 TO LBL 70 WL 160 PER SRM 51-40-05 AND DWG 111A1000<BR>OK TO INSTALL PART; [11] VERIFIED CORRECTIVE ACTION ITEM 10.<BR>OK TO INSTALL L/H BS 663 VAPOR BARRIER UPPER ATTACH ANGLE GIVEN.; [12] INSTALLED NEW SUPPORT ANGLE P/N 111A1322U5 AT BS 663 VAPOR BARRIER UPPER ATTACH BETWEEN LBL 5 TO LBL 70 WL 160 PER SRM 51-40-02-0G-0 AND DWG 111A1000; ID:0139; REV:-;