Flying B412

Question 1

Define a ‘normal take-off’

Answer 1

4ft hvr
Select accel att
Set power IGE +15% or 100% tq
Accel parallel to surface
Initiate gradual climb at translation
Achieve TDP (35ft at 45kts)
Vy 70kts at 55ft

Question 2

Describe a normal approach

Answer 2

300ft gate = 70kts

100ft gate = 40kts < 500ft/min RoD

100ft set decelerative att and fly constant att, reducing speed approach to 4 ft hover

Question 3

Roof top approach

Answer 3

300ft gate = 70kts

100ft gate = 30kts + RoD <500ft/min

Steeper approach than nml

Question 4

Stuck pedal - nose left considerations

Answer 4

Excessive thrust - ball right

Beep down - Nr 97%

Accept up to 45deg nose left

Wind from right

Control hdg with throttles (extended index finger points in direction)

Control during touch down can be assisted by winding off throttle and simultaneously raising collective

Question 5

Stuck pedal - nose right considerations

Answer 5

Insufficient thrust - ball left

SARL

Max nose right = 20 deg

Greater than 20deg = auto

Safe run on speed = 60kts

Wind from left

Fly level at 5ft, then wind back throttles (only a little) and land

Question 6

Describe a constant attitude (ie velocity) auto

Answer 6

If in cloud on a dark night and no likelihood of being able to ID a landing area

Set 40kts, rotors stable and AC trimmed hands off

80ft conduct a very small flare

50ft (or when the pucks valve clamps shut) pull in all the collective

Question 7

Descent techniques

Answer 7

Initiate descent - 15% Tq

Maintain with - 10% Tq / 500fpm

Question 8

Night HLS departure

Answer 8

AHTA

5deg NU - 0deg NU - 5deg ND

Question 9

Night HLS approach profiles

6 deg

10 deg

Answer 9

6 deg (preferred)

Downwind 1000’ AGL @ 80kts approx 0.7nm spacing abeam

Base turn ~1.7nm, then decel to 60kts

Finals @ ~2nm, then decel to 45kts G/S

TOD = 1000’ @45 kts G/S with 1.5nm to run

Anticipate TOD; establish 500fpm RoD

10deg = TOD at 45kts/ 1000’/ 1.0nm (750fpm)

Question 10

Auto

Answer 10

Entry - drop collective, set att and trim

Maintenace - small needle/ 70kts / 94kts

Flare - 100ft / 20deg NU

Question 11

Stuck pedal in hover

Nose right

Nose left

Answer 11

Nose right - insufficient

Control hdg with throttles (index finger)

Nose left - excessive

Raise collective
Beep down
Control hdg with throttles

Question 12

Stuck collective hover

Answer 12

Use ETL

Beep down to reduce Nr

Throttle back to reduce Nr

Question 13

Stuck collective in flight

Flight possible

Flight not possible

Answer 13

If flight is possible

• set 30kts

if RoD greater than 300fpm
- control RoD with IAS

If RoD less than 300fpm

• ETL
• beep down
• throttle down

Flight not possible

• set Vy
• quick stop

Question 14

Good practice for levelling at MDA

Answer 14

Plan to stop RoD by MDA + 50ft, then drift down.

Question 15

What is a good tq setting for 100kts on a ILS?

Answer 15

40%

Question 16

What do I need to do prior to giving the “clear to winch” call at night?

Answer 16

• set references
• set white lights (nvg failure)
• check tq

Question 17

412 start wind limits

Answer 17

45kts steady state

Gusts greater than 10 taking above 35kts

Question 18

Calculate PA

Answer 18

PA = ELEV +[(1013 - QNH)*30]

Question 19

Calculate DA

Answer 19

DA = [(OAT - ISA)* 120] + PA

Question 20

Describe height for speed recovery during a vertical departure
Eng failure after TDP

Answer 20

Check down on Collective to control rrpm

Drop nise 15 deg nose down

When airspeed comes alive

Set 10deg nose up climb att and 45kts and top up power to max

Clr of obs, accel to 70kts

Question 21

What is Rrpm of a B412?

Answer 21

324

Question 22

What is the rotor tip speed?

Answer 22

856km/h

462kts