Service difficulty report · Intercostal · Boeing 73773V

Difficulty date
January 10, 2021
Submitted
February 11, 2021
Operation
Air carrier
Aircraft
N564WN
Make and model
Boeing 73773V
Aircraft serial
30244
Aircraft time
50,417 hours, 34,956 cycles
Part
Intercostal
Part number
141A5410
Condition
Cracked
Location
Fuselage
Stage of operation
IN
How discovered
V
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

CRACK WEB - INTERCOSTAL FLOOR STRUCTURE LOCATED BETWEEN BS 312 TO BS 328 AND LBL 45 FWD GALLEY AND LAV (1 EA) / EVALUATED ALLOWABLE DAMAGE FOR CRACK ON WEB-INTERCOSTAL LOC FLOOR STRUCTURE BS312 TO BS 328 AND RBL 45 FWD GALLEY AND NO FOUND ON SRM WEB-INTERCOSTAL WAS REPLACED IAW B737-700 SRM 51-40-02 SRM 51-10-02 ITEM 9 DWG 141A5400 SHEET 26 REV - MADE REPAIR INTERCOSTAL WEB LOC BTW BS312 AND BS328 AND LBL 45 IAW DWG 141A5410 REV V MATERIAL USED USED 7075-TO 0.040' P/O 2015506433 AND HEAT TREATED AND CONVERTED TO CONDITION T62 TOOL USED TEMPERATURE CONTROLLED P/N P3015GOE500000 S/N 112031023 DUE DATE 25FEB21 MEASURE OF CRACK IS L=0.249' TOOL USED CALIPER P/N 500-196-30 S/N 14334557 DUE DATE 29-OCT-21

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