Service difficulty report · Doubler · Boeing 7377BD

Difficulty date
February 17, 2021
Submitted
March 3, 2021
Operation
Air carrier
Aircraft
N556WN
Make and model
Boeing 7377BD
Aircraft serial
33936
Aircraft time
31,414 hours, 18,587 cycles
Part
Doubler
Condition
Cracked
Location
Center Wing
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

REINFORCEMENT DOUBLER IS CRACKED ON FWD SIDE OF LOWER VAPOR BARRIER BS663 LBL26 WL154 / LOCATED AND DRILLED NEW REINFORCEMENT DOUBLER ON FWD SIDE OF LOWER VAPOR BARRIER BS 663 LBL 26 WL 154 IAW SRM 51-40-05-0G-0 PARA 4 FIG. 3 AND FIG. 4; WILL BE INSTALLED ON NRC U283735

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