Cessna 402C Pilot Operating Handbook page 97

SECTION 4
NORMAL PROCEDURES (AMPLIFIED PROCEDURES)
(M~,402C
NIGHT FLYING
Before starting the engines for a night flight, position the master
panel lighting switch to NIGHT and adjust the rheostats to provide enough
illumination to check all switches, controls, etc.
Operation of the navigation and anti-collision lights should be checked
by observing the reflections on the ground and on the wing tips and wings.
After starting the engines, the retractable landing lights (the right
landing light is optional equipment) may be extended and checked momen-
tarily. Returning the landing light switches to OFF turns the lights off,
but leaves them extended ready for instant use.
Before taxi, the interior lighting intensity is normally decreased to
the minimum at which all the controls and switches are visible. The taxi
light should be turned on prior to taxiing at night. The landing lights,
if used during taxiing, should be used intermittently to avoid excessive
drain on the battery. In the engine runups, special attention should be
directed to alternator operation by individually turning the voltammeter
selector switch to L ALT, R ALT and BATT and noting response on the
vo1tammeter.
Night takeoffs are conventional, although the gear retraction operation
is usually delayed slightly to insure that the airplane is well clear of
the runway.
In cruising flight, the interior lighting intensity should be decreased
to the minimum which will provide adequate instrument legibility.
COLD WEATHER OPERATION
Whenever possible, external preheat should be utilized in cold weather.
The use of preheat materially reduces the severity of conditions imposed on
both engines and electrical systems. It is the preferred or best method of
~-
starting engines in extremely cold weather. Preheat will thaw the oil
trapped in the oil coolers and oil filters, which will probably be con~
gealed prior to starting in very cold weather. Refer to the Airplane
Service Manual for additional information when operating in extremely cold
weather.
When the oil pressure gage is extremely slow in indicating pressure, it
may be advisable to fill the pressure line to the gage with kerosene or
",..,- JP-4.
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NOTE - - - - - - - - - . ,
During cold weather operation it is advisable to
rotate propellers through four complete revolutions,
by hand, before starting engines.
If preheat is not available, external power should be used for starting
because of the higher cranking power required and the decre~sed battery
output at low temperatures. The starting procedure is normal; however, if
the engines do not start immediately, it may be necessary to position the
primer switch to LEFT or RIGHT for 5 to 1D seconds.
1 November 1979
4-27