Systems Flashcards
Engine
PT6A-67P
Reverse Flow
1200HP
Gas Generator Section
4 Axial turbines
1 Centerfugal turbine
1 compressor turbine
Power Section
2 Power turbines
Reduction Gearbox (RGB)
2 stage planetary
Accessory Gearbox (AGB)
2-Gens
Oil pump
HP Fuel pump
LP Fuel pump
Fuel Control Unit (FCU)
Propellor
4 or 5 blades 104-105”
Contant Speed Unit
Primary prop speed control 1700rpm +/-30
Sends oil into the hub to decrease pitch
Overspeed Unit
Secondary prop speed control 1802rpm. removes oil from hub to increse pitch and lower RPM
Also contains Feathering solenoid
Nf Governor
Tertiary prop speed control 1853rpm
works by bleeding air from Py line to get FCU to reduce fuel flow
During Beta and Reverse Nf is primary speed control
Rudder Trim
ON PCL
Trim tab on rudder
Aileron Trim
Hat Switch
Controls trim tab on RT Aileron
Stabilzer Trim
Two motors adjust Horizontal Stab
Hat Switch controls Primary motor
Autopilot controls Secondary motor
Alt Stab Trim controls Secondary motor
Trim Interrupt
Disables ALL trim motors
Flaps
Controlled by the FCWU
FCWU takes input from flap handle and position sensors, relays position info to MAU.
Sends power thru interupt to Power Drive unit
Generators
2 generators
300A max (450a <2 min)
Essential Power Line
Left side (the 1s)
Gen 1
Gen 1 Bus
Essential Bus (EPS batt and Bus)
AV Bus 1
Batt 1
Secondary Power Line
Right Side (the 2s)
Gen 2
Gen Bus 2
Non-Ess Bus
Cabin Bus
AV 2 Bus
Main Bus
BATT 2
EPS Bus
Emergency Power Bus
ESIS CPCS Cabin Alt Sensor
Normally fed by Ess Bus
can be fed by Emergency Battery
Hot Bus
Always on, connected to BATT 1
Feeds Standby Bus
Flap Assymetry CAS
FLAPS
PUSHER
Pusher Safe
Air/Ground System
4 Inputs
2 WOW sensors
Airspeed
Radar Alt
What will cause the Gear UP warning?
Flaps more than 15 or
PCL Idle & <130kts or
Radar Alt <200 & 10psi
HYDRAULICS CAS
Decrease in Pressure or
Pump running for 10 mins or
6+ cycles in an hour
Cabin Alt CAS
10500
