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
Corroded
Location
Zn 100 Fus Lower
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 FLOOR SUPPORT AT FWD WET AREA BS294 - BS312 LBL12.<[01] REMOVED CORROSION ON FLOOR SUPPORT AT FWD WET AREA BS294 TO BS312 LBL REWORKED AREA : L= 3' W= 1.5' MATERIAL LOST MORE THAN 50% FOUND TO BE OUT LIMIT; PART WILL BE REPAIR BY REPLACEMENT IAW 51-10-02-0G-0;[02] REMOVED FLOOR SUPPORT AT FWD WET AREA BS294 TO BS312 LBL 12 IAW SRM 51-40-02-0G-0;[03] VERIFIED CORRECTIVE ACTIONS #1 AND #2;[04] MEASUREMENT TABLE VERIFIED;[05] PARTIAL STEPS 1-2;[06] LOCATED AND DRILLED NEW INTERCOSTAL AT FWD WET AREA BS 294 TO BS 312 LBL 12 WL 208.1; IAW SRM 51-40-05-0G-0 AND DWG 141A5600. OK TO INSTALL;[07] OK TO INSTALL;[08] INSPECTED ACTION 6;[09] INSTALLED NEW INTERCOSTAL AT FWD WET AREA BS 294 TO BS 312 LBL 12 WL 208.1; IAW SRM 51-40-02-0G-0 AND DWG 141A5600.;[10] VERIFIED STEP 9.;[11] VERIFY STEPS 1-2 CARD IS COMPLETED;[12] VERIFIED STEPS 1 AND 2 ARE COMPLETE.;[13] WORKSCOPE IS COMPLETE.

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