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Douglas DC-7C  Pilot's Handling Notes
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HANDLING THE ENGINES

The DC-7C has four 2450hp Wright R-3350-EA4 Cyclone TC18 engines which are fuel injected, two speed supercharged, and turbo compounded to give rated power up to 16400 feet. These are the most complicated piston engines to enter series production for civilian use and despite simplification for use in FS2002 their operation is complex. Each has 3400hp available for take off (at sea level) and for five minutes in case of emergency. METO power is 2920hp to 4,800 feet. 

The constant speed propellers can be feathered and have reverse pitch. Automixture control is provided, but may be overidden.

During climb the primary power reference is MAP, but in the cruise the primary power reference is fuel flow.

The power required to cruise this aircraft economically depends on weight. Initial cruise may need to be at 1900hp per engine reducing to 1600hp at the end of a long flight. To achieve the most economical cruise condition as fuel (weight) reduces set the appropriate RPM and then adjust the throttles to achieve the stated PPH (per engine) using the fuel flow gauge. Intermediate values may be interpolated. If fuel economy is not paramount normal cruise MAP may be regarded as 38 inches at all weights adjusting only RPM in accordance with the schedule below. 

WARNING - NEVER EXCEED 43 inches MAP after noise abatement or 41 inches MAP after climb complete. 

Maximum fuel load is 51,000lbs of high density 145 Octane fuel. 

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HANDLING THE AIRCRAFT

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Take Off: 

APPLY BRAKES 

MIXTURE - MANUAL FULL RICH

COWL FLAPS - MID

TRIM 30% full range NOSE UP  

FLAP - STAGE 1

CALL for TOGA POWER  (3400hp)

PROPS FULLY FINE

Slowly apply FULL THROTTLE 

ROTATE at 122 KIAS  (143,000lbs)

Establish positive rate of climb

GEAR UP 

ACCELERATE 160 KIAS @ <= 500 VSI

CLIMB 300 feet QFE (agl) 

CALL for METO Power

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METO Power: (Climb stage 1 = Noise abatement) 

COWL FLAPS - MID

51 inches MAP   

2650 RPM 

160 KIAS

Climb 2000 feet QFE (agl)

FLAP - UP

ACCELERATE 190 KIAS @ 500 VSI

CALL for climb power

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Climb Power: (Climb stage 2)

MIXTURE - AUTO

COWL FLAPS - MID

43 inches MAP

2500 RPM

500 VSI

SPEED WILL DECAY - MINIMUM 172 KIAS

IF UNABLE to maintain =>172 KIAS

REQUEST LEVEL OFF & STEP CLIMB from ATC

ACCELERATE > 190 KIAS

WHEN CLEARED BY ATC CLIMB 500 VSI 

IN 2000 foot steps - Repeat as necessary

Plan 950 PPH

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Max Cruise (about 1800hp) :

COWL FLAPS - CLOSED

2400 RPM

750 PPH

Never Exceed 41 inches MAP in cruise

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Econ Cruise at max weight (about 1700hp):

COWL FLAPS - CLOSED

2300 RPM

735 PPH

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Econ Cruise at light weight (about 1600hp):

COWL FLAPS - CLOSED

2100 RPM

680 PPH

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Descent:

AUTOMIXTURE - ON

COWL FLAPS - CRACKED

2300 RPM

REDUCE MAP in stages of 3 inches (per minute)

MINIMUM 23 INCHES MAP

<260 KIAS Speed Brakes may be deployed

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Holding:

COWL FLAPS - CRACKED

2300 RPM

Slowly REDUCE MAP

To obtain 170 KIAS

To improve passenger comfort

FLAP stage 2 may be selected 

MINIMUM 140 KIAS with FLAP 2

Plan 450 PPH at low weight

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Approach and Landing:

MIXTURE - MANUAL RICH

COWL FLAPS - MID

2300 RPM

MAP as required

REDUCE < 180 KIAS

FLAP - STAGE 1


REDUCE < 170 KIAS

FLAP - STAGE 2


Nearing Glideslope

REDUCE < 160 KIAS

FLAP - STAGE 3


ON descending

GEAR DOWN

23 to 27 inches MAP

FLAP - STAGE 4 


REDUCE <140 KIAS

FLAP - STAGE 5 


Cross AIRPORT BOUNDARY 105 KIAS  (@ 111,000lbs)

FLARE and LAND

COWL FLAPS - FULL OPEN

AFTER NOSEWHEEL CONTACT

FLAP - UP

REVERSE PITCH				

WHEEL BRAKES as required

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Baulked Landing:

CALL for EMERGENCY POWER

PROPS FULL FINE

FULL THROTTLE 

COWL FLAPS - CLOSED

ROTATE and CLIMB 130 KIAS

Clear of obstacle 

GEAR - UP

ACCELERATE >160 KIAS

COWL FLAPS - MID

FLAPS - UP (by stages)

ACCELERATE 190 KIAS

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General:

AEROBATICS are PROHIBITED

NEVER EXCEED FL280

NEVER EXCEED FL250 with passengers

NEVER EXCEED 313 KIAS

ROUGH AIR NEVER EXCEED 269 KIAS

AP in use NEVER EXCEED 269 KIAS

NEVER DEPLOY SPEED BRAKES > 260 KIAS

ABOVE FL150 NEVER EXCEED 260 KIAS

ABOVE FL200 NEVER EXCEED 230 KIAS

FLAP 1 never exceed 191 KIAS

NOSE GEAR DOWN never exceed 174 KIAS

FULL FLAP never exceed 162 KIAS

CLEAN STALL 107 KIAS at MLW

STALL with FULL FLAP 80 KIAS at MLW

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NOTE: This aircraft's real-world handling notes have been simplified for use with FS 2002
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