Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
November 18, 2021
Submitted
December 20, 2021
Operation
Air carrier
Aircraft
N778SW
Make and model
Boeing 7377H4
Aircraft serial
27883
Aircraft time
68,867 hours, 40,745 cycles
Part
Stringer
Condition
Cracked
Location
R/H Wing
Stage of operation
UK
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

R/W L/E INB FRONT SPAR LOWER CHORD ATTACHED ANGLE BRACKET CRACKED I/B OF PYLON # 2. REMOVED ANGLE PER B737-700 SRM 51-40-02-0G-0.; [02] LOCATED AND DRILLED NEW STRINGER ANGLE IAW SRM 51-40-05-0G-0; [03] VERIFIED STEP 2; VERIFIED STEP 1; OK TO TREAT AND PRIME; [06] TREATED AND PRIME HOLES AT ANGLE REF B737-7 SRM 51-20-01-OG-0; VERIFIED STEP 6; OK TO INSTALL STRINGER ANGLE. INSTALLED RT WING L/E I/B FRONT SPAR LOWER STRINGER ANGLE IAW SRM 51-40-02-0G-0 AND DWG #116A4008. REMOVED AND REPLACED STRINGER ANGLE IAW SEM 51-40-02-0G-0 AND DWG 116A4008.

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