412 FLight & Exposition Flashcards
Required equipment for IFR flight
1- both autopilots with ATT mode engaged 2- heated pitot static system 3- pilot windshield wiper 4- 2x VHF radios 5- 2x nav receivers + aux equip appropriate for route 6- DME 7- ATC transponder 8- Marker beacon receiver 9- 3” standby attitude indicator 10- pilot IVSI 11- force trim 12- roof black out curtains 13- emergency COMM panel
Max aircraft gross weight
11,900lbs
5398kg
Min aircraft gross weight
6400lbs
2900kg
Min IFR airspeed
60 KIAS
Airspeed vs mast tq limit
Do not exceed 105 KIAS when mast tq above 81%
Auto VNE
105 KIAS
Prohibited manoeuvres
Roll > 50 deg
Pitch up > 30 deg
Pitch down > 15 deg
Max IFR rate of climb or descent
1000 fpm
Max IFR approach slope
5 deg
Slope limits
10 deg on sides
4 deg nose up or down
Which switches need to be identified and confirmed prior to selection in flight?
Throttles Fire handles Hydraulic switches Fuel panel switches Governor switches
The max wind speed for B412 starts and stops is
45 kts mean wind speed in steady wind conditions
35 kts mean wind in gusty wind conditions
(momentary gusts in excess of 45 kts are acceptable)
What is the obs gradient in a SID, unless otherwise advised?
3.3%
Need xxxfpm have xxx fpm
- 4
- 7
- 7
During flight planning for IFR or NVFR, what performance at the cruising alt is required for the B412?
1% climb gradient, which at 70kts Vy = 82ft/mins
For practicality - use 50ft/min.
What limits are used to determine OEI obstacle clearance performance?
2.5min power from TDP
N1 30mins limits = unlimited
Tq + ITT 30min limits = 30mins
The fuel interconnect switch should be selected open when..
Fuel quantity reduces to 600lbs.
What height and speed is the TDP standardised too?
45kts at 35 ft
What is Vtocs/Vtoss for the B412?
45kts
What timing compensation method for wind can be applied during a holding pattern?
Headwind - increase outbound timing by 2 secs for every knot of head wind
Tailwind - take 2 sec/per kt off outbound leg
Outer marker check height procedure
Compare altimeter with published check height
If altimeter reads high - add difference to DA and adjust RADALT bug
If altimeter reads low - good to go. No adjustment req’d
Significant error - discontinue PA, switch to NPA
CR2 calculation of Critical point or equi-time point
Total dist. Dist to cp
——————-—————————
G/S on + G/S home
G/S home
CR2 Calculation of PNR
Time to PNR. G/S Home
(Mins)
—————————————————
Endurance (mins). G/S out +
Minus FR and Variable. G/S home
NVG options if vis drops below 5000m
Revert to NVFR or IFR
Change direction
Land
NVG height vs speed requirements
<500’ = 80kts
< 200’ = 60kts
NVG recency requirements
Flight time
CCF
HLS
Winch
3hrs inc 3 take-offs, ccts and landings in last 6 months or NVG NPC in last 6 months
NVG NPC annually
HLS basic - 1x 6mths
NVG winch - 1x 6mths
What equipment is required for NVIS flight?
a RADALT which
- instant height
- easy to read rate of change
- audio and visual warnings of set height
a pilot steerable search light (az + pitch)
no IR filter below 500’ unless
- can revert immediately or
- 2 NVIS pilot operation
aircraft has min equipment for NVFR or IFR
each crew can access NVIS compatible torch
each crew has lip light
Define HFIRES brief
H - Height low (check ht = Rgr, xxft radalt/ climb x 3/ ht good, hold)
F - Fouling (free/ cut/ quick splice)
I - Intercom (shout/ hand signals/ pax ICS)
R - Runaway (Stby winch pwr OFF)
E - Emergency ACO (cut cut cut) PLT ( minor - cont/ abort, major - brace or fly away)
S - Stoppage (Stby pilot controls)
Overwater Ops requirements
Max use of FD. Alt hold on until base/final and visual with target area
No extended transits blw 1000’ AGL.
No descent blw 1000’ AGL until established in CcT area or over target.
No descent blw 500’ AGL until surface visible and discernible, and no descending turns
Altitude changes announced, radalt set, altitude callls every 100’ and every 20’ in last 100.
Max OAT temps
51.7 deg at sea level, less 2 deg/ 1000ft
Define final reserve
Fuel in tanks after final landing:
- 20mins day VFR (range rate)
~ B412 = 250lb - 30mins Day/Ngt (holding rate)
~ B412 = 300lb
Calculated at 1500’AGL at landing weight
“MAYDAY, MAYDAY, MAYDAY FUEL” required if landing below FR.
Also advise if your expecting to conduct a normal approach and landing and Emergency services are not req’d.
Define land as soon as practicable
Aircraft is airworthy and can continue to nearest airfield/ HLS where availability of tech assist is considered.
Define land as soon as possible
There is a clear threat to safety/ airworthiness if flight continues too long. Terminate flight at nearest safe approach and landing area.
Tech assist not considered.
Define land immediately.
Significant risk if flight is continued, such as severe vibration or structural failure. Ditching, controlled descent into trees deemed a lesser risk.
When are survival suits to be worn?
Water blw 15deg, or
Air blw 10deg (at sea level), or
Combined Sea and Air temp 31deg or blw
Or when desired due wind chill factor
Take watch off and burp suit
VNE both cabin doors back?
100kts
How much effect will throttle manipulation have on yaw?
Up to 20deg
Describe loss of power recovery profile during. Vertical dep
Lower collective and drop nose to 15 deg.
As soon as ASI wakes up set climb att
15 deg is pitch down limit for B412
Ops Man thunderstorm avoidance
5nm upwind
SID RoC requirments
- 3% need / have
- 7% need / have
- 3% need 233fpm / have 500fpm @ 20 deg
4. 7% need 332fpm / have 450fpm @ 25 deg
List the required fuels.
Taxi
Trip
Dest alt
Holding
Contigency
Final reserve
Additional
Descretionary
Define taxi fuel
Taxi fuel allowance for all flights.
50lb
Define trip fuel…
Fuel needed from departure to destination.
Includes, climb, cruise, descent, approach and landing.
750lb/hr
Define destination alternate fuel…
All fuel required from destination to alternate.
Includes missed app, climb, cruise, descent, approach and landing fuel.
Define holding fuel…
Included if holding is required or expected.
600lb/hr
Define contingency fuel…
The greater of
10% of trip fuel or 5mins of holding above dest at 1500ft.
Required by Babcock for all flights.
Define final fuel…
The useable fuel in tanks after landing.
Day VFR 20mins =250lb
NVFR/IFR 30mins = 300lb
Define descretionary fuel…
Any additional fuel carried by PIC.
Define additional fuel…
Fuel required to alternate aerodrome OEI. However as OEI fuel burn is less, not normally required as the 15mins at 1500ft requirement is covered by final reserve.
What happens to useable fuel when a boost pump fails?
We lose access to 61lbs of fuel.
Illumination of the FUEL TRANS light after 920lbs means what?
A check valve has failed and the fuel left over in the mid tank (use switch to find out) is unusable.
What happens when you pull a T handle?
Fuel valve - closes
Part Sep door - closes
Bleed air valve - closes (both engs)
Fire extinguisher ccts - armed
What are some problems if the emergency load switch is used?
Engines in manual mode revert to auto
Hyd system that was off, revets to on
Both fuel boost pumps turn off
How do you calculate the required Rod for a 3 degree descent slope?
A - half the descent GS and add a zero
B - descent GS x 5
