Service difficulty report · Heat Exchanger · Lear 55LEAR

Difficulty date
June 17, 2004
Submitted
August 16, 2004
Operation
Air carrier
Aircraft
N40DK
Make and model
Lear 55LEAR
Aircraft serial
92
Engine
Garrtt TFE7313A
Part
Heat Exchanger
Part number
7608061
Part serial
334
Condition
Clogged
Location
Cabin Cooling
Part time
11,895 hours
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

THE COOLING FINS WERE COMPLETELY OBSTRUCTED WITH OIL, DUST, FILM. YOU CAN NOT GAIN ACCESS OF THE COMPONENT, SHORT OF REMOVING IT FROM THE SYSTEM.