Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
July 24, 2019
Submitted
March 14, 2022
Operation
Air carrier
Aircraft
N781WN
Make and model
Boeing 7377H4
Aircraft serial
30601
Aircraft time
66,040 hours, 38,875 cycles
Part
Stiffener
Condition
Cracked
Location
Wheel Well Lh
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

L/H BS663 LOWER VAPOR BARRIER VERTICAL STIFFENER IS CRACKED IN THE RADIUS AT LBL25 WL145 / REMOVED L/H BS 663 CRACKED VERTICAL STIFFNER BS 663 LBL 25 WL 145 PER SRM 51-40-02-0G-0. LOCATED; DRILLED AND DEBURRED NEW STIFFNER PER SRM 51-40-05-0G-0; DWG 111A1000; OK TO INSTALL. LEAD 269 13AUG19 INSP 15 13AUG19 INSTALLED VERTICAL STIFFNER ON L/H BS 663 VAPOR BARRIER; LBL 25 WL 145 PER SRM 51-40-02-0G-0. DWG 111A1000.

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