Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
June 7, 2023
Submitted
July 12, 2023
Operation
Air carrier
Aircraft
N963WN
Make and model
Boeing 7377H4
Aircraft serial
36676
Aircraft time
38,123 hours, 23,431 cycles
Part
Intercostal
Part number
UNKNOWN
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

CRACKED INTERCOSTAL AT FWD CABIN BS344+9 BL0 WL208.<[01] REMOVED INTERCOSTAL FROM BS344-BS360 AT BL0 WL 208 IAW SRM 51-40-02;[02] DAMAGE FOUND AT FWD CABIN INTERCOSTAL BS344+9; BL0; WL208; FOUND TO BE OUT OF LIMIT IAW SRM 53-1-51-1A-1 DET.4B(1A); FIG 105-N;[03] LOCATED AND DRILLED NEW INTERCOSTAL P/N 141A5410-23; LOT#1530388-1 AT BS344 TO BS 360; BL0; WL208 IAW SRM 51-40-05-0G-0 AND DWG# 141A5400.OK TO INSTALL;[04] VERIFIED STEP #3.;[05] INSTALLED INTERCOSTAL FROM BS344-BS360 AT BL 0 WL 208 IAW SRM 51-40-02 AND IAW DGW#141A5400;[06] VERIFIED INSTALLATION AND MEASUREMENT TABLE

More about the Boeing 737-7H4