Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
September 30, 2021
Submitted
November 24, 2021
Operation
Air carrier
Aircraft
N780SW
Make and model
Boeing 7377H4
Aircraft serial
27885
Aircraft time
68,861 hours, 40,837 cycles
Part
Stringer
Condition
Corroded
Location
Fuselage
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

CORRODED STRINGER AT B.S. 520+17; STRINGER 23 LEFT. FOUND 0.020 REMOVED FROM 0.036; IN AREA OF 1'X1' FOUND TO BE OUT OF LIMITS IAW SRM 53-00-03-1A-1. CUT OUT STRINGER SECTION BS 500D+11'- BS 520+18' STR 23 L IAW SRM 53-00-03-2R-1; STEP 4-B. INSTALLED NEW STRINGER SECTION AND HAT SECTION IAW SRM 53-00-03-2R-1, DWG 143A3210, AND DWG 143A0060. THE DAMAGE WAS REPAIRED IAW SRM 53-00-03-2R-1 (REPAIR 1) AND EA 21-153-02933.

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