Service difficulty report · Torque Tube · Boeing 7377CT

Difficulty date
July 7, 2019
Submitted
August 17, 2020
Operation
General aviation
Make and model
Boeing 7377CT
Aircraft time
43,224 hours
Part
Torque Tube
Part number
256A37107
Condition
Sheared
Location
Te Flaps
Part time
41,808 hours
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) DURING DECENT CREW REPORTED THE LEADING EDGE OR TRAILING EDGE FLAPS DID NOT EXTEND WHEN COMMANDED WITH FLAP LEVER. ALTERNATE FLAP EXTENSION SWITCH WAS SELECTED AND LEADING EDGE FLAPS DEPLOYED BUT TRAILING EDGE FLAPS DID NOT EXTEND. UPON INVESTIGATION THE WHEEL WELL T/E FLAP TORQUE TUBE WAS FOUND SHEARED BETWEEN THE FLAP DRIVE MOTOR AND L/H INBOARD FLAP TRANSMISSION. (TC# 20190709008)

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