HK 36 TC with Rotax 912 S3
Flight Manual
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Description
Doc. No. 3.01.12-E
Rev. 1
06 Oct 2003
Page 7 - 11
Cowl flap
For the operation of the cowl flap, there is a T-grip on the center console next to the
cabin heat button. To arrest the T-grip, turn it 90° clockwise.
T-grip pulled = cowl flap CLOSED
The cowl flap is closed during soaring in order to reduce drag. At outside temperatures
below 0 °C (32 °F), partial closing of the cowl flap avoids continuous operation with an
oil temperature below 80 °C.
NOTE
Continuous operation with oil temperatures below 80 °C
may lead to increased accumulation of condensation in the
engine oil, which can be recognized by white foam in the oil
tank.
CAUTION
Leave the cowl flap at least half open while the engine is
running in order to avoid overheating. Pay special attention
to the engine temperatures.
