Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
April 15, 2023
Submitted
May 11, 2023
Operation
Air carrier
Aircraft
N284WN
Make and model
Boeing 7377H4
Aircraft serial
32535
Aircraft time
52,003 hours, 31,287 cycles
Part
Intercostal
Condition
Corroded
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

CORROSION ON INTERCOSTAL WEB FLOOR STRUCTURE LOCATED BTW BS 294.5 TO BS 312 LBL 6 WL 208.1 AT FWD GALLEY AREA 2023-247679<[01] TOOL USED EDDY CURRENT FLAW DETECTOR P/N: NORTEC 600D; S/N: 200053402; DUE DATE: 13-MAY-23;[02] TOOL USED: THICKNESS GAGE P/N:45MG; S/N: 221861811; DUE DATE: 08-NOV-23.;[03] REPLACED INTERCOSTAL WEB FLOOR STRUCTURE LOCATED BTW BS 294.5 TO BS 312 LBL 6 WL 208.1 AT FWD GALLEY AREA IAW B737-700 SRM 51-40-02 ; SRM 51-10-02 ITEM 9 AND DWG 141A5600 REV ?N? ; DWG 141A5400 REV ?B?.;[04] REPLACED INTERCOSTAL WEB FLOOR STRUCTURE LOCATED BTW BS 294.5 TO BS 312 LBL 6 WL 208.1 AT FWD GALLEY AREA IAW B737-700 SRM 51-40-02 ; SRM 51-10-02 ITEM 9 AND DWG 141A5600 REV ?N? ; DWG 141A5400 REV ?B?.

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