Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
October 18, 2019
Submitted
May 16, 2022
Operation
Air carrier
Aircraft
N969WN
Make and model
Boeing 7377H4
Aircraft serial
41777
Aircraft time
27,175 hours, 16,491 cycles
Part
Intercostal
Condition
Corroded
Location
Aft Cargo Compt
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 STA 747+10 TO 767; RBL 23; WL 154; BAFFLE ANGLE HAS CORROSION ON LOWER SURFACE AROUND NUTPLATE HOLES / REMOVED AND EVALUATED CORROSION ON -8 INTERCOSTAL. ORIGINAL THICKNESS .030' LOSS OF .013' WITH .027' REMAINING BLEND FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2. REMOVED AND REPLACED INTERCOSTAL PER SRM 51-40-02-0G-0 AND DWG 146A7502 REV A

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