Service difficulty report · Torque Tube · Dhav DHC8102

Difficulty date
February 3, 2009
Submitted
March 5, 2009
Operation
General aviation
Make and model
Dhav DHC8102
Aircraft time
41,762 hours
Engine
Pwa PW120
Propeller
Hamstd 14SF7
Part
Torque Tube
Part number
234187B
Condition
Delaminated
Location
Te Flaps
Part time
41,787 hours
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

FLAP POWER LIGHT INTERMITTENT. TORQUE TUBE P/N 234187B OF PRIMARY FLAP DRIVE SYSTEM FOUND TO HAVE 300 DEGREES OF ROTATION FREE PLAY. BONDED ENDS (RUBBER) FOUND DISINTEGRATED. TORQUE TUBE REPLACED AND LUBRICATED IAW AMM 27-52-00. ADDITIONAL CHECKS OF INSTALLED PARTS PERFORMED BY APPLYING PRESSURE OF TORQUE TO CHECK INTEGRITY OF BONDED ELASTOMER. SYSTEM CHECK SERVICEABLE.