Originally Posted by
Hot and Hi
How is the factory unit driven? Power take-off from the MRGB? Hydraulically? Electrically?
The RFM states it is
"a compressor which is mechanically driven by a belt from the MGB output driving the engine oil cooler fan".
According to the supplement, it states
"when the air conditioning system is in operation, the pilot must reduce the hover performances given in SECTION 5 of the basic flight manual by 20 kg (44 lb)".