Service difficulty report · None · Boeing 737

Difficulty date
August 18, 2022
Submitted
September 22, 2022
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 737
Aircraft serial
33855
Aircraft time
57,460 hours, 34,246 cycles
Part
None
Part number
146A81281
Condition
Corroded
Location
Aft Cargo Bay
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

CORROSION ON AFT CARGO BAY TENSION STRAP AT RBL 19 BS 787+6; BS 787+13; BS 807+9. / [01] REMOVED CORROSION ON ACB ON TENSION STRAP AT RBL 19 BS 787+6' IN L=2' X W=2' X D=0.027' FROM ORIGINAL TICKNESS OF .100' FOUND TO BE OUT OF LIMITS IAW SRM 53-60-15-1A-1 PAR 4 FIG 103 DETAIL G<BR><BR>USED TOOL: <BR>ID:ATS2739; S/N:A22004232 ; DATE: 04/2022 ; DUE:04/2023;[02] VERIFIED ACTION #1;[03] REMOVED ACB TENSION STRAP IAW SRM 51-40-02;[04] LOCATED AND DRILLED NEW ACB TENSION STRAP IAW BOEING DWG 146A8340; 146A8120; 146A0081 AND SRM 51-40-05;[05] VERIFIED CORRECTIVE ACTIONS STEP 4.;[06] REQUIRED OK TO INSTALL;[07] UPDATED MEASUREMENTS;[08] OK TO INSTALL GIVEN.;[09] INSTALLED TEMPORARY AND PERMANENT FASTENER BEFORE SQUEEZE OUT TIME AT AFT CARGO BAY TENSION STRAP P/N 146A8128-14 RBL 19; BS 767+7 TO 867-7 APPLIED PS 870 C 20 SEALANT AT 22 AUG 2022 15:29 UTC IAW SOPM 20-50-19 AND SRM 51-40-02-0G-0 AND DWG. 146A8120 AND DWG 146A8340.;[10] INSTALLED TENSION STRAAT ACB RBL 19; BS 767+7 TO 867-7 IAW SRM 51-40-02-0G-0 AND DWG. 146A8120 ID: 0031 REV: - AND DWG 146A8340 ID:0021 REV:-;[11] INSTALLED TENSION STRAP AT ACB RBL 19; BS 767+7 TO 867-7 IAW SRM 51-40-02-0G-0 AND DWG. 146A8120 ID: 0031 REV: - AND DWG 146A8340 ID:0021 REV:-;[12] VERIFIED CORRECTIVE ACTION 11.;[13] VERIFIED MEASUREMENT TABLE.