Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
August 8, 2023
Submitted
August 23, 2023
Operation
Air carrier
Aircraft
N413WN
Make and model
Boeing 7377H4
Aircraft serial
29819
Aircraft time
72,820 hours, 42,792 cycles
Part
Stringer
Part number
UNKNOWN
Condition
Cracked
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

AREA AFT OF FORWARD CARGO BAY; STR 26L IS CRACKED AT AFT FASTENER BS 520+18<[01] COMPLETED STEPS 1;2;3 AND 7;[02] REMOVED DAMAGED SECTION OF STR 26L BETWEEN BS 500D+10 TO 540 AND INSTALLED HAT SECTION SPLICE AND NEW STRINGER SECTION IAW SRM 53-00-03-2R-1 (REPAIR 1 - REPAIR FOR A TYPE I; TYPE II; OR TYPE IV FUSELAGE STRINGER WITH GENERAL DAMAGE - CAT A (PERMANENT) REPAIR). REPAIR COMPLETE.;[03] VERIFIED CORRECTIVE ACTION #2.<BR>VERIFIED MEASUREMENTS.

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