Service difficulty report · Torque Tube · Cvac 285ACFBABB

Difficulty date
June 17, 1999
Submitted
July 5, 2000
Operation
General aviation
Make and model
Cvac 285ACFBABB
Aircraft time
12,724 hours
Engine
Pwa R183092
Part
Torque Tube
Part number
28B4028
Condition
Corroded
Location
Lt Aft Arm
Part time
12,767 hours
Component
Torque Tube
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

(CAN) DURING ANNUAL INSPECTION, A SPECIAL INSPECTION WAS CARRIED OUT DUE TO A REPORT BY THE U.K. GOVERNMENT (AAIB BULLETIN NR: 1/99, REF: EW/C98/7/9 CATEGORY: 1.1). THE BULLETIN DETERMINED THAT THE LT GEAR DOOR COLLAPSED INWARDS DUE TO THE INABILITY OF THE CORRODED TORQUE TUBE BEING ABLE TO RESIST THE RANGE OF LOADS WHICH MIGHT BE IMPOSED OVER A WATER LANDING. UPON INSPECTION OF THE NOSE LANDING GEAR DOOR TORQUE TUBES IT WAS DISCOVERED THAT LT TORQUE TUBE HAD VISIBLE CORROSION AT THE AFT OPERATING ARMS - THE SAME LOCATION AS THE CATALINA THAT CRASHED - AND UPON REMOVAL OF THE RT TORQUE TUBE CORROSION WAS FOUND INTERNALLY.