Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
April 11, 2023
Submitted
May 17, 2023
Operation
Air carrier
Aircraft
N958WN
Make and model
Boeing 7377H4
Aircraft serial
36673
Aircraft time
38,993 hours, 23,664 cycles
Part
Intercostal
Condition
Cracked
Location
Zn 200 Fus Top
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

FOUND CRACK ON INTERCOSTAL COMMON TO FASTENER HOLE AT BS 321 WL 208 LBL 44<[01] UPDATED MEASUREMENT FIELD;[02] UPDATED MEASUREMENT TABLE;[03] CERTIFY;[04] REMOVED INTERCOSTAL AT WL208 LBL44 BS 312-328; LOCATED AND DRILLED NEW INTERCOSTAL PN:141A5410U12. NEED OK TO INSTALL.;[05] CERTIFY;[06] VERIFIED CORRECTION ACTIONS 2;3;4 AND 5 AND OK TO INSTALL.;[07] INSTALLED NEW INTERCOSTAL BS312-328 LBL44 IAW SRM 51-40-02-0G-0 AND DWG #141A5400 REV:-;[08] CERTIFY;[09] VERIFIED CORRECTIVE ACTION 7 AND MEASUREMENT TABLE

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