Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
January 5, 2023
Submitted
February 7, 2023
Operation
Air carrier
Aircraft
N209WN
Make and model
Boeing 7377H4
Aircraft serial
32484
Aircraft time
59,684 hours, 35,490 cycles
Part
Intercostal
Part number
NOTREPORTED
Part serial
NOTREPORTED
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 WET AREA BS277+7 BL0 WL208.<[01] REMOVED INTERCOSTAL BS 312 TO BS 328 BL 0 WL 208.1 PER SRM 51-40-02-0G-0;[02] CORRECTION STEP 1<BR>REMOVED INTERCOSTAL BS 277 BL 0 WL 208.1 PER SRM 51-40-02-0G-0;[03] RECIVED NEW INTERCOSTAL P/N 141A5110-3 LOCATED AND DRILLED NEW INTERCOSTAL AT BS 277 TO BS 249 BL 0 WL208; IAW 737-700 SRM 51-40-05-0G-0 DWG 1421A5400.;[04] CORRECTION DWG 141A5400;[05] VERIFIED CORRECTIVE ACTION STEPS 1;2;3 AND 4. VERIFIED OK TO INSTALL.;[06] INSTALLED NEW INTERCOSTAL P/N 141A5110-3 AT BS 277 TO BS 249 BL 0 WL208; IAW 737-700 SRM 51-40-02-0G-0 DWG 141A5400.-;[07] VERIFIED CORRECTIVE ACTION 6.;[08] VERIFIED THE MEASUREMENT TABLE. WORKSCOPE COMPLETE.

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