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Pilot's Handling Notes for a Savoia Marchetti S.M.81 with Alfa Romeo 126/RC34 engines

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The three 750hp Alfa Romeo 126/RC34 (Bristol Pegasus) engines have automated mixture controls, and manually applied carb heat controls. Superchargers give rated power up to 3400 metres.

Each engine can briefly deliver 780hp for war emergency use below 3500 metres.

NEVER EXCEED 2200 RPM

CAUTION - Max cruise power RPM limited at high altitude

WAR EMERGENCY - never exceed 2415 RPM

AUTOMIXTURE - This engine has Automixture in real life. Turn automixture ON in the FS9 realism screen before flight.

Design cruise altitude is 5000 metres but at light weights step climb to 6Km.

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Take Off:

AUTOMIXTURE = ON (in FS9 realism options)

FLAP = STAGE 1

CARB HEAT = COLD

TRIM = 10% positive

LINE UP

BRAKES = ON

THROTTLES = FULL

BRAKES = OFF

YOKE = FULL FORWARD to raise tail

TAIL UP - ROTATE FIRMLY

RESTRICT CLIMB <= 3 m/s VSI

ACCELERATE = 150 KmIAS

FLAP = UP

ACCELERATE = 200 KmIAS

WAIT FOR > 3 m/s VSI

Call for Climb power

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Climb power:

Plan 930 PPH

C2 = 1.0

200 KmIAS

On reaching 5000 metres

Call for flight plan cruise power

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Tactical Cruise:

C2 = 0.9

RPM <= 2200

Plan 870 PPH

Note: Yields 183 KTAS at FL164 (5Km)

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Econ Cruise:

C2 = 0.8

Plan 720 PPH

Note: Yields 163 KTAS at FL164 (5Km)

Note: Yields 172 KTAS at FL197 (6Km)

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Descent:

MAX 310 KmIAS

RPM < 2200

Plan 500 PPH

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Approach Circuit and Landing:

Before Downwind leg

OAT <= 5C CARB HEAT = HOT

REDUCE < 200 KmIAS

FLAP = STAGE 1

Downwind

REDUCE < 175 KmIAS

FLAP = STAGE 2

In time to achieve Vref

REDUCE < 150 KmIAS

FLAP = STAGE 3

CARB HEAT = COLD

Vref = Cross airfield boundary @ 110 KmIAS

THROTTLES = RETARD (IF REQUIRED)

(FLARE) ALWAYS LAND ON MAINWHEELS only

WHEN TAIL SETTLES - YOKE FULL AFT

FLAP = UP

BRAKES - as required

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