Service difficulty report · Web · Boeing 7377H4

Difficulty date
October 4, 2021
Submitted
October 26, 2021
Operation
Air carrier
Aircraft
N232WN
Make and model
Boeing 7377H4
Aircraft serial
32500
Aircraft time
53,002 hours, 31,465 cycles
Part
Web
Condition
Corroded
Location
Bs 794 Rbl 22
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 DOOR THRESHOLD SUBWEB AT B.S..794+3; R.B.L. 22; W.L. 154. ; / [01] REMOVED ACB DOOR THRESHOLD SUBWED AT B.S. 807-847 RBL 22 WL 154 IAW 51-40-02; [02] REMOVED ACB DOOR THRESHOLD SUBWED AT B.S. 807-847 RBL 22 WL 154 IAW 51-40-02; [03] REMOVED CORROSION FROM ACB DOOR THRESHOLD WEB AT BS 794+3 RBL 22 MEASURED 3'L X 2'W AND 0.020' DEEP ORIGINAL THICKNESS OF 0.045' FOUND OUT OF LIMITS PER SRM 53-60-15-1A-1; [04] REMOVED CORROSION FROM ACB DOOR THRESHOLD WEB AT BS 794+3 RBL 22 MEASURED 3'L X 2'W AND 0.020' DEEP ORIGINAL THICKNESS OF 0.045' FOUND OUT OF LIMITS PER SRM 53-60-15-1A-1; [05] VERIFIED DAMAGE OUT OF LIMITS PER SRM 53-60-15-1A-1; [06] UPDATED MEASUREMENTS; [07] LOCATED AND DRILLED NEW ACB SUBTHRESHOLD WEB PER SRM 51-40-05; SRM 51-40-08; DWG# 146A8123.; [08] VERIFIED CORRECTIVE ACTION 7.; [09] REQUEST OK TO INSTALL.; [10] CERTIFIED ACTION 9; [11] OK TO INSTALL GIVEN.; [12] APPLIED SEALANT AT 06:27 UTC 13OCT21 AND INSTALLED ALL TEMP AND PERMANENT FASTENERS IAW SRM 51-31-00-390-801 ; SRM 51-40-02; DWG 146A8340 ID 28 REV-; [13] VERIFIED CORRECTIVE ACTION ENTRY 12.; [14] INSTALLED REMAINING PERMANENT FASTENERS IN ACB CARGO BAY DOOR THRESHOLD SUBWED AT BS 794+3 RBL 22 WL 154 IAW SRM 51-40-02 0G-0 AND DWG 146A8340 REV:-; [15] RII INSPECTED ACTION 14; [16] INSPECTION COMPLETE

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