Service difficulty report · Control Rod · Dhav DHC3

Difficulty date
May 16, 2011
Submitted
September 9, 2011
Operation
Air carrier
Make and model
Dhav DHC3
Aircraft time
4,927 hours
Engine
Pwa PT6A34
Propeller
Hartzl HCB3TN3
Part
Control Rod
Part number
C3CF1027
Condition
Damaged
Location
Te Flap
Part time
138 hours
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

DURING A ANNUAL INSPECTION, IT WAS FOUND THAT THIS FLAP CONTROL ROD, HAD SUFFERED DAMAGE RESULTING FROM LONG SCREWS PN: AN 509-10-15. AFTER INVESTIGATING, IT WAS DETERMINED THAT THE 2 SCREWS WERE CORRECT IAW THE IPC, DUE TO ITS SHANK LENGTH, BUT WERE REQUIRED TO BE TRIM AS INDICATED ON THE DWG C3-W-34. THE IS NO MENTION IN THE MM OR THE IPC REGARDING THE TRIMING OF THESE SCREWS, THIS"CAUTIONARY" NOTE WOULD PREVENT THIS TYPE OF DAMAGE OCCURING.