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Pilot's Handling Notes for a Fiat G.12CA with Alfa Romeo 128/RC18 engines
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The three 860hp Alfa Romeo 128/RC18 (Bristol Pegasus) engines have automated mixture controls, and manually applied carb heat controls. Superchargers give rated power up to 1800 metres. Each engine can briefly deliver 930hp for take off below 1800 metres. This engine has constant speed airscrews which can be feathered. The British engines and screws cause swing to the right. The virtual flight engineer will operate the oil cooler shutters and select the appropriate supercharger gear ratio throughout the flight according to the engine RPM demanded, current altitude and the weather. The engine cowl flaps are under pilot control in this simulation.
AUTOMIXTURE - This engine has automixture in real life and in MSFS.
The manifold pressure gauges of this aircraft are calibrated in Kg/Cm^2 abbreviated C.
CARB HEAT - When C < 0.8 and OAT < +5C apply CARB HEAT for 30 seconds every few minutes to clear carb ice. Use of CARB HEAT CAUSES significant LOSS OF POWER.
Maximum fuel load is 7,116lbs of 87 Octane AVGAS. This is loaded by default in FS9 to allow the longest routes flown in real life, but restricts payload to twelve passengers plus bags.
Post war initial design cruise altitude is 3000 metres. Operational ceiling is always higher.
CAUTION - this aircraft has airscrew de-icing but NO AIRFRAME DE-ICING.
The landing gear is approved for use from unpaved (but not unprepared) surfaces. This aircraft has limited STOL capability.
Read 'How to fly the Fiat G.12' before flight.
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Take Off phase:
AUTOPILOT = OFF
FLAP = STAGE 1 (one light)
CARB HEAT = COLD
COWLS = 40%
ELEVATOR TRIM = 1 cabrata
RUDDER TRIM = sinistra
RPM = MAX
LINE UP
TAILWHEEL LOCK = ON
BRAKES = ON
THROTTLES = FULL
BRAKES = OFF
YOKE = FULL FORWARD to raise tail
TAIL UP - ROTATE FIRMLY
POSITIVE RATE OF CLIMB
GEAR UP
ACCELERATE = 170 KmIAS
FLAP = UP
ACCELERATE = 210 KmIAS
Call for METO power
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Obstacle Clearanace phase - METO power:
C = 1.26
RPM = 2300
210 KmIAS
COWLS = 40%
Above all obstacles
Call for climb power
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Climb phase power:
VSI <= 3.5 m/s
RPM = 2200
C = 1.09
220 KmIAS
COWLS = 40%
On reaching 3000 metres
Call for Econ Cruise
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Econ Cruise:
COWLS = CLOSED
C = 0.82
RPM = 1900
Plan 660 PPH
Yields 153 KTAS at FL98 (3Km)
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Max Cruise:
COWLS = 20%
C = 0.92
RPM = 1950
Plan 800 PPH
Yields 166 KTAS at FL98 (3Km)
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Descent phase:
*DO NOT EXCEED -3.5 m/s*
Retain CRUISE RPM
Target prior cruise IAS
DO NOT EXCEED 350 KmIAS
*AVOID SHOCK COOLING*
C reduce @ 0.1 per minute
C => 0.5 (*MIN*)
COWLS = CLOSED
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Holding phase:
FLAP = UP
RPM = 2000
C = as required to achieve
220 KmIAS
COWLS = as required
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Approach or Circuit phase:
C => 0.5 until over boundary fence
*Before Glidepath or Circuit*:
C = 0.5
REDUCE = 170 KmIAS
COWLS = 20%
GEAR = DOWN
FLAP = STAGE 1 & 2 (two lights)
RPM = 2300
C as required to sustain
170 KmIAS
Downwind:
170 KmIAS
Base Leg:
C => 0.5 as required to
Turn final @ 160 KmIAS
Final:
CARB HEAT = COLD
In time to achieve Vref
FLAP = STAGE 3 (four lights)
Cross airfield boundary @ 140 KmIAS (all weights)
C < 0.5 allowed
FLARE
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After landing phase:
CORRECT any drift
PULL TAILWHEEL GENTLY INTO CONTACT
YOKE FULL AFT
COWLS = FULL OPEN
FLAP = UP
BRAKES = as required
TAILWHEEL = UNLOCK before taxi
RPM = MAX before taxi
Nose engine = SHUT DOWN
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