Service difficulty report · Cylinder Head

Difficulty date
March 22, 2007
Submitted
May 1, 2007
Operation
General aviation
Engine
Pwa R985AN14B
Part
Cylinder Head
Part number
CH90ER
Condition
Cracked
Location
Engine
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

(CAN) ON 100 HR INSPECTION DURING A DIFFERENTIAL CHECK CYLINDER WAS READING LOW. USING A SOAP SOLUTION IT WAS DETERMINED THAT THERE WAS A LEAK ACROSS THE HEAD DUE TO A CRACK BETWEEN THE COOLING FINS. (TC NR 20070418006)