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Junkers Ju 90

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before engine start

1

fuel

check

 

2

tank selectors

1: links

  2: rechts

 

3

parking brake

set

 

4

space in front of a/c

free

 

 

 

engine start

1

engine start order

3 - 2 -1 - 4

 

2

batterie voltage

min. 18 Volts,
(
otherwise reload a/c)

 

3

master switch

on

 

4

avionics switch

off

 

5

emerg fuel cock 3

open

 

6

throttle 3

¼ open

 

7

mixture 3

full open

 

8

propellers

high RPM (12:00)

 

9

ignition 3

1 + 2

 

10

starter 3

engage

 

11

generator

on

 

12

engines 2 – 1 – 4

repeat steps  5 – 10

 

13

avionics

on

 

14

cowl flaps

close

 

 

 

takeoff

1

autopilot

master switch: off

servos: off

altitude selector: 1000 m

climbspeed selector: + 4

 

2

heading selector

set

 

3

clock

set

 

4

radios

set

 

5

altimeter

set

 

6

radio-altimeter

150

 

7

lights

as required

 

8

pitot heating

as required

 

9

trim

elevator:  +8°

rudder:  +1°

aileron:   

 

10

flaps

+ 20° (2 notches)

 

11

splitflap

retracted

 

12

engineoil

min 60 °C

 

13

oil-/ fuelpressure

oil:   5,8-7 at

fuel: 0,25 at

 

14

propellers

high RPM (12:00)

 

15

cowlflaps

⅔ open

 

16

tailwheel

lock when lined up

 

17

magnetos

check: -100 RPM

 

18

carb heat

check: -150 RPM

 

19

engines

(0 kts)    2000 +/-50 RPM

1,1 ata

 

20

take off

120-130 Km/ h

 

21

undercarriage

retract

 

22

airspeed

Vx 190 Km/h

Vy 230 Km/h

 

 

 

initial climb

1

airspeed

160 Km/h

 

2

flaps

+ 10° (1. notch)
maintain until reaching cruise altitude

 

3

engines

1,05 ata

 

4

propellers

2200 RPM (12:45)

 

5

trim

as required

 

6

autopilot

masterswitch: on

servos: on

altitude selector: 1000 m

climbrate selector: + 4

 

 

 

climb

1

airspeed

190 - 210

 

2

flaps

+ 10° (1. notch)
maintain until reaching cruise altitude

 

3

engines

1,00 ata

 

4

propellers

2100 RPM (13:40)

 

5

trim

as required

 

6

autopilot

altitude selector: cruise altitude climbrate selector: + 3

(over 1500 m: +2)

 

7

mixture

adjust

 

8

oiltemp

monitor

 

 

 

cruise

 

1

flaps

retract

 

 

2

airspeed

330 Km/ h

 

 

3

Motor

max. 1,0 ata

 

 

4

propellers

2050 RPM (14:15)

 

 

5

mixture

adjust

 

 

economic cruise

 

2

airspeed

305 Km/ h

 

 

3

engine

0,74 ata

 

 

4

propellers

2000 RPM (15:05)

 

 

5

mixture

adjust

 

 

cruise

6

tank selectors

as required

 

7

oil-/ fuel pressure

oil:   5,8-7 at

fuel: 0,25 at

 

8

oiltemp

80 – 100 °C

 

9

outside air temp

überwachen

 

 

 

descent

1

airspeed

max. 300 Km/ h

 

2

mixture

enrich

 

3

descent speed

-3 m/ sec

 

4

oiltemp

min. 60 °C

 

5

cowl flaps

close

 

6

radios

set

 

 

 

approach

1

fuel selectors

center tank

 

8

radio altimeter

750

 

2

mixture

full rich

 

3

carb heat

on

 

4

airspeed

210 Km/ h

 

5

flaps

20° (2 notches)

 

6

split flap

as required

 

7

undercarriage

extend

 

 

 

final approach and touchdown

1

airspeed

130 Km/h

 

2

radio altimeter

150

 

3

carb heat

off

 

4

propellers

high RPM (12:00)

 

5

flaps

60° (full down)

 

6

split flap

full down

 

after touchdown

7

split flap

retract

 

8

flaps

retract

 

9

tailwheel lock

open

 

 

 

go around

1

engines

1,05 ata

 

2

propellers

2200 U/ RPM (12:45)

 

3

mixture

full rich

 

4

carb heat

off

 

5

split flap

retract

 

6

flaps

+ 10° (1. notch)

 

7

trim

elevator +8

 

8

airspeed

190 Km/ h

 

9

undercarriage

retract