Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
November 27, 2020
Submitted
December 30, 2020
Operation
Air carrier
Aircraft
N933WN
Make and model
Boeing 7377H4
Aircraft serial
36640
Aircraft time
38,893 hours, 23,539 cycles
Part
Stringer
Part number
143A3230
Condition
Cracked
Location
Fwd Cargo
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 STRINGER 24R BETWEEN BS 520 TO BS 540 FWD CARGO COMPARTMENT, NOT FOUND ALLOWABLE DAMAGE FOR CRACK ON SRM ATTACHMENT FLANGE OF STR 24R BS 540 CRACK MEASURE IS L=0.310' TOOL USED P/N 500-197-30 SN A18229578 DUE DATE 12JUL21. REPAIRED STR 24R FROM BS 500D TO BS 540, IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 REPAIRED WITH STR SECTION -7 IN CONDITION 7075 T0 -0.053' CHANNEL ANGLE (2 EA) IN CONDITION 7075 T0 -0.063' HEAL TREATED AND CONVERTED FROM T0 TO T6, IAW BAC 5602 P/N AFFECTED 143A3241-25 IAW DWG 143A3230 REV J.

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