Lancair ES-P, Pilot Operating Handbook

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cabin Altitude and Differential during the flight.
OPERATION – CRUISE & DESCENT
During the cruise portion of the flight any changes in altitude or Flight
Level assignment should be set in the Cabin controller. Upon
commencing descent to the destination airport, set the landing airport's
altitude in as soon as possible to allow a comfortable cabin descent rate.
Remember that the cabin derives its pressurization air from excess
induction air, and any power reduction will result in a loss of
pressurization capabilities. Normally a 2-3" hg. reduction works best in
conjunction with speed brake deployment, any further reduction,
especially at higher altitudes, will cause a rapid cabin altitude change
due to lack of sufficient pressurization air flow.
COLD WEATHER OPERATIONS
PREFLIGHT INSPECTIONS
Winter preflight inspections of the aircraft need to account for the
accumulation of frost or ice on the exterior of the aircraft. The ES-P
with its extraordinary smoothness can suffer markedly from the effects
of such accumulations as they utilize laminar flow airfoils. These
effects result in significantly higher drag of the airframe and wings, as
well as reduced lift and increased weight of the accumulation. Once
these deposits have been removed (preferably by warming in a hangar)
the preflight should include special emphasis on freedom of control
movements.
ENGINE CONSIDERATIONS
Very cold temperatures require extra considerations for engine starting
and operations. The engine oil will be significantly more viscous
causing higher oil pressures, slower indication upon starting, increased
engine wear, tappet noise, poor battery performance, etc.
During extreme cold weather it may be necessary to preheat the engine,
oil, and battery before starting. Since the engines are cooled by
pressurized air created in flight, ground operations must be minimized
at high ambient temperatures and conducted with care at all times. Do
not start engine below 30°F; it is possible the main bearing may turn —
preheat as required.
Engine operations should be into the wind when possible. The mixture
should be RICH. Avoid prolonged idling and do not exceed 2200 RPM
on the ground. Warm up should be at 1000-1200 RPM.
The engine is warm enough for take-off when the oil temperature has
reached a minimum of 100° F with a turbocharged engine. Excessive
oil pressure can cause over boost and consequent engine damage.