Service difficulty report · Keelbeam · Boeing 7377BD

Difficulty date
March 6, 2021
Submitted
March 16, 2021
Operation
Air carrier
Aircraft
N7746C
Make and model
Boeing 7377BD
Aircraft serial
33934
Aircraft time
44,891 hours, 23,333 cycles
Part
Keelbeam
Condition
Cracked
Location
Rt Mlg Ww
Stage of operation
IN
How discovered
V
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

MOD TYPE: 6 NBR: 43277 REV: POS: RIGHT MLG WHEEL WELL VAPOR BARRIER AT APPROX. RBL 45.64 LOWER STIFFENERFOR OUTER MAIN KEEL BEAM; IS CRACKED AND EXTENDING UPWARD AND IB 3.6'. FOUND CRACK TO EXTEND 2' PAST STOP DRILL TO A LENGTH OF 5.6' / FACT AS A RESULT OF POST REPAIR INSPECTION

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