Service difficulty report · Web · Boeing 7377H4

Difficulty date
May 22, 2021
Submitted
June 28, 2021
Operation
Air carrier
Aircraft
N207WN
Make and model
Boeing 7377H4
Aircraft serial
34012
Aircraft time
52,378 hours, 31,227 cycles
Part
Web
Condition
Corroded
Location
Aft Threshold
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

AFT CARGO BAY THRESHOLD WEB BS807+18 RBL26 WL164 HAS CORROSION ; / [01] VERIFIED APPLICABILITY ON SRM 53-60-15-OI-1 FOR IDENTIFICATION AND SRM 53-60-15-1A-1 FOR ALLOWABLE DAMAGE; [02] REMOVED CORROSION FROM ACB THRESHOLD WEB BS807+18' RBL26; WL164 IAW SRM 51-10-02-OG-0; MAXIMUM BLENDED AREA EXCEEDS 50% OF ORIGINAL THICKNESS; FOUND TO BE OUT OF LIMIT IAW SRM 53-60-15-1A-1PAR. 4.G.(2) FIG.103; [03] VERIFIED APPLICABILITY ON SRM 53-60-15-OI-1 FOR IDENTIFICATION AND SRM 53-60-15-1A-1 FOR ALLOWABLE DAMAGE.<BR>VERIFIED REMOVED CORROSION FROM ACB THRESHOLD WEB BS807+18' RBL26; WL164 IAW SRM 51-10-02-OG-0; MAXIMUM BLENDED AREA EXCEEDS 50% OF ORIGINAL THICKNESS; FOUND TO BE OUT OF LIMIT IAW SRM 53-60-15-1A-1PAR. 4.G.(2) FIG.103.; [04] REMOVED ACB THRESHOLD WEB BS794-BS847; RBL26; WL164; IAW SRM 51-40-02-OG-0; [05] LOCATED AND DRILLED ACB THRESHOLD WEB P/N 146A8123-25 AT BS794-BS847; RBL26; WL164; IAW SRM 51-40-05 AND DWG 146A8120;

More about the Boeing 737-7H4