Service difficulty report · Exhaust Duct · Dhav DHC6100

Difficulty date
October 26, 2007
Submitted
January 21, 2008
Operation
General aviation
Make and model
Dhav DHC6100
Aircraft time
32,268 hours
Engine
Pwa PT6A20
Propeller
Hartzl HCB3TN3
Part
Exhaust Duct
Part number
3009090
Condition
Cracked
Location
Engine
Part time
5,861 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

(CAN) WHILE INSPECTING THE POWER SECTION FOR REASSEMBLY AFTER HSI, CIRCUMFERENTIAL CRACKS WERE DISCOVERED ALONG THE WELDS OF THE EXHAUST DUCT JUST FWD OF THE PT VANE MOUNTING FLANGE. (4) CRACKS RANGED IN LENGTH FROM .75 INCH TO 4.75 INCH. THE POWER SECTION WAS REPLACED. (TC NR 20071212024)