Service difficulty report · Web · Boeing 7377H4

Difficulty date
March 31, 2022
Submitted
May 2, 2022
Operation
Air carrier
Aircraft
N475WN
Make and model
Boeing 7377H4
Aircraft serial
32474
Aircraft time
59,744 hours, 35,276 cycles
Part
Web
Condition
Corroded
Location
Fuselage
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 WEB AT AFT WET AREA BS986+8 RBL39 WL208. / [01] REMOVED CORROSION ON WEB AT BS986+8 RBL39 WL 208 IN A 1.5'X1.5'X.005 ORIGINAL THICKNESS .020 OUT OF LIMITS PER SRM 53-70-51-1A-1STEP 4-C 2 FIG 103;[02] REMOVED WEB AT BS 986 TO 1016; RBL 37 TO RBL 47 PER SRM 51-40-02-0G-0.;[03] LOCATED AND DRILLED NEW WEB AT BS986-1016 RBL37-47; PER SRM 51-40-05.;[04] VERIFIED CORRECTIVE ACTION 3.;[05] OK TO INSTALL WEB AT BS986-1016; RBL37-47; WL 208.;[06] OK TO INSTALL GIVEN;[07] INSTALLED WEB AT BS986-1016; RBL37-47; WL 208 PER SRM 51-40-02 AND DWG 147A5730 AND 147A0000.;[08] VERIFIED CORRECTIVE ACTION ENTRY 7.;[09] UPDATED REPAIR TYPE;[10] UPDATED REPAIR TYPE;[11] UPDATED CORROSION LEVEL;[12] CERTIFY;[13] VERIFIED STEPS COMPLETE

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