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Lockheed L.414 Hudson I Pilot's Handling Notes
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The two Wright R-1820-G102A Cyclone dual fuel engines have automatic mixture controls, and are carburetted with manually applied carb heat controls. These engines drive Hamilton Standard controllable two pitch aircrews optimised for take off and anti submarine patrolling. They are rated 900hp at 2300 RPM at 6700 feet (ISA).

Use of 92 Octane military grade fuel (or better) allows use of full throttle and below 600 feet (ISA) it is then permissible to generate 43.5 inches MAP, and up to 2350 RPM, thus generating 1100hp for up to five minutes for TOGA and WEP. While running on airline grade (87 Octane) AVGAS these engines must instead be throttled to 37.5 inches MAP and 2300 RPM. 

These engines have (need) no cowl flaps.

WARNING: Compliance with the relevant MAP limit will not prevent engine overspeed.

WARNING: With military grade fuel (or better) DO NOT EXCEED 2350 RPM. 

WARNING: With airline grade fuel DO NOT EXCEED 2300 RPM.

WARNING: AVOID - RUNNING Cyclone engines UNDERSQUARE (MAP must always exceed RPM divided by 100).

WARNING: CRITICALLY WEAK FLAPS - Vfe = 115 MIAS

This Hudson I is loaded with the maximum possible = normal 4,080lbs of British high lead, high density, 87 Octane AVGAS. Bombload is therefore restricted to 2 x 250lb anti submarine bombs. 

This aircraft is unpressurised and the five crew have no oxygen supply. Under King's Regulations do not exceed FL100 by day or FL80 by night.

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Take Off: 

Take Off and Obstacle Clearance phase: 

PITCH      = FINE        <<<<<<<<<<<<
CARB HEAT  = COLD
FLAP       = STAGE 1 (10 degrees)
TRIM       = 9 degrees (45%) UP (to target Vx)
LINE UP

BRAKES     = ON
MAP        = 34.5 inches ( 87 Octane Fuel)
BRAKES     = OFF

YOKE       = NEUTRAL
ROTATE     = 90 MIAS (Vr)
GEAR       = UP 
ACCELERATE = 110 MIAS 
ACHIEVE    = 200 feet AGL 

Above all local obstacles:

PITCH      = COARSE      <<<<<<<<<<<<
FLAP       = UP
VSI        = minimal or zero
ACCELERATE = 135 MIAS
COMMENCE   = Climb phase

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Climb Phase = Rated Power:

MAP   = 34.5 inches
IAS   = 135 MIAS

Anti sub patrol typically FL65

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Maritime Patrol: 

IAS   = 135 MIAS
MAP   = as required
RADAR = SEARCH
Plan  = 300 PPH
Yield = 130 KTAS at FL65 

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Tactical (day bomber) cruise: 

MAP   =  25 inches
Plan  = 500 PPH
Yield = 174 KTAS at FL100

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Max Cruise:

MAP = 29 inches

Typically  670 PPH
Typically  198 KTAS at FL100

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Arrival = Descent phase:

VSI   = vary to deliver
IAS   = prior cruise IAS
MAP   = OVERSQUARE (follow RPM down)

Prior to IAF, hold or circuit:

MAP = OVERSQUARE (follow RPM down)
VSI = 0
IAS = 135 MIAS

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Holding phase:

FLAP  = UP
IAS   = 135 MIAS
MAP   = as required
Plan  = 300 PPH     

HOLD until < 15,650lbs = MLW

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Approach then Circuit:

Before descent to MDA:

IAS  = 135 MIAS
FLAP = UP

On Descending to MDA:

MAP = trickle barely oversquare
IAS < 155 MIAS

When maintaining MDA:

IAS = reduce to 135 MIAS
MAP = oversquare
Look for landing runway
Adjust to circuit altitude

Downwind in visual circuit:

GEAR     = DOWN
WHEN IAS < 115 MIAS 
FLAP     = STAGE 2
IAS      = 110 MIAS
PITCH    = FINE <<<<<<<<<<<<<

Final in visual circuit:

To achieve Vref = 85 MIAS (at 14,000lbs)

FLAP = STAGE 3
MAP  = INCREASE if necessary

Cross airfield boundary @ 85 MIAS 

MAP = UNDERSQUARE ALLOWED
FLARE and LAND
BRAKES as required

Clear of runway:

FLAP  = UP

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Straight In Approach:

Avoid if possible!

Before descent to MDA:

IAS  = 135 MIAS
GEAR   may be used as brake
IAS  = 110 MIAS
FLAP = STAGE 1
IAS  = 110 MIAS
MAP  = as required

On Descending to MDA:

FLAP  = STAGE 2
MAP   = do NOT alter 
VSI   = minus 600
UNTIL = MDA
Look for runway lights

Only while maintaining MDA:

IAS = 110 MIAS
MAP = as required
Look for runway lights

ONLY IF visual with runway:
On descending:

GEAR  = DOWN
PITCH = FINE <<<<<<<<<<<<<

To achieve Vref = 85 MIAS (at 14,000lbs)

FLAP = STAGE 3
MAP  = INCREASE if necessary

Cross airfield boundary @ 85 MIAS 

MAP = UNDERSQUARE ALLOWED
FLARE and LAND
BRAKES as required

Clear of runway:

FLAP  = UP
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