### Canadair C-4 Argonaut Handling Notes

- Take Off and Climb
- Cruise
- Descent
- Approach and Landing
- Carb Heat

SUMMARY.
The Argonaut has four 1420hp Rolls Royce Merlin 724 engines which are carburetted and highly supercharged to give rated power up to 18,750 feet. They can each deliver 1760hp for take off from any runway below 13000 feet. The constant speed propellers can be feathered. Automixture control is standard.
WARNING - HIGH RISK OF SHOCK COOLING - observe all (minimum) boost and rpm restrictions at all times. Use GEAR and FLAP to decelerate aircraft.
Maximum fuel is 25,000lbs of high density AVGAS. Fuel must be offloaded to carry maximum payload. See aircraft.cfg and use FS9 menu.

### HANDLING THE AIRCRAFT

Take Off:

BRAKES = ON
CARB HEAT = COLD
TRIM 20% NOSE UP
FLAP = STAGE 2
PROPS = FULL FINE
CALL for TOGA POWER
FULL THROTTLE
BRAKES = OFF
ROTATE = 112 KIAS (@ 82300lbs)

Establish positive rate of climb

GEAR UP
≤ 500 ft/min
ACCELERATE = 130 KIAS
CLIMB 300 feet AGL
FLAP - UP
ACCELERATE = 135 KIAS
CALL for METO Power

Top of page

METO Power:

BOOST = 12
RPM = 2800 RPM
135 KIAS
Check RADIATORS < 135C
More than 1000 feet AGL and
Above all ATC cross above DEP restrictions
ACCELERATE = 145 KIAS
CALL for climb power

Stage 1 Climb below FL130:

BOOST = 9
RPM = 2650
145 KIAS
Check RADIATORS < 120C
Plan 2300 PPH

Stage 2 Climb FL130+:

BLOWERS = FULL SUPERCHARGE
RPM = 2850
BOOST = 9
140 KIAS
Check RADIATORS < 120C
Plan 2300 PPH

Top of page

Max Cruise (with significant headwind):

BOOST = 7
RPM = 2650
Check RADIATORS < 100C
Plan 2200 PPH
Note: yields 280 KTAS at FL250

BOAC (launch customer) normal cruise:

BOOST = 5
RPM = 2350
Check RADIATORS < 100C
Plan 1800 PPH
Note: yields 256 KTAS at FL250

BMA (and other second hand users) normal cruise:

BOOST = 2.5
RPM = 2200
Check RADIATORS < 100C
Plan 1400 PPH
Note: yields 230 KTAS at FL250

Top of page

Descent and Holding:

ABOVE FL200 ≤ 200 KIAS
NEVER EXCEED 223 KIAS
DO NOT SHOCK COOL ENGINES
BOOST ≥ ZERO
RPM ≥ 2200 whilst ≥ FL130
Passing (below) FL130
BOOST ≥ ZERO
RPM = 2000

HOLD = FLAP UP & 2.5 @ 2000
Check RADIATORS < 100C
Plan 1300 PPH

Top of page

Approach and Landing:

DO NOT SHOCK COOL ENGINES
RPM = 2000
BOOST => ZERO
WHEN < 170 KIAS
FLAP = STAGE 1
GEAR = DOWN (now or later)
WHEN < 160 KIAS
FLAP = STAGE 2
REDUCE <= 140 KIAS
RPM = 2350

FINAL DESCENT

To achieve Vref at 50 AGL
GEAR = DOWN
FLAP = FULL
BOOST = SLOW reduction below zero
Cross airfield boundary 98 KIAS (Vref @ 72000 lbs)
FLARE and LAND
FLAP = UP
WHEEL BRAKES as required

Top of page

Carb Heat:

When ≤ 2.5 BOOST with OAT below 5C (40F)
use carb heat periodically to clear carburettor ice.
Continuous use of carb heat is not recommended.

Top of page