Service difficulty report · Stiffener · Boeing 73773V

Difficulty date
January 8, 2021
Submitted
February 10, 2021
Operation
Air carrier
Aircraft
N564WN
Make and model
Boeing 73773V
Aircraft serial
30244
Aircraft time
50,417 hours, 34,956 cycles
Part
Stiffener
Part number
143A00600
Condition
Cracked
Location
Cabin Floor
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

CRACK STIFFENER FLOOR STRUCTURE LOCATED AT BS 540 AND LBL 24.5 TO RBL 24.5 CENTER SECTION (2 EA) / REPLACED STIFFENER FLOOR STRUCTURE LOCATED AT BS 540 AND LBL 24.5 TO RBL 24.5 CENTER SECTION (2EA) IAW B737-700 SRM 51-40-02 DWG 143A00600 REV B AND DWG 143A5240 REV - PART NUMBER USED P/N 143A5240-35 PO 2020 21514 P/N 143A5240U34 PO 2021 102498 MEASURE OF CRACK IS L=1.090' OF LBL 24.5 STIFFENER AND MEASURE OF RBL IS L=0.861' TOOL CALIPER P/N 500-464 SN 14236038 DUE DATE 02-JAN-22

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