RKA - Electrical Flashcards
during a generator assisted start place the Ground Idle switch to _______ and ensure the operating engine is stabilized above ______% N2 and verify amps are less then _______ amps
High
61% N2
200amps
Items on HOT BATT BUS
Lights (Cabin Entrance, Emergency
Exit, Baggage compart., Tail cone)
Auxiliary Hyd Pump
Primary pitch trim
Fuselage Tank Fill
voltmeter
Battery disconnect
Dump Valve
- NWS acc. dump valve
What buses are powered when the BATT switch is placed in BATT
All electrical busses
What happens during Normal Engine Start when the Engine start switch is pressed?
How many start lights for x-gen start?
- Overhead Flood Lights illuminate full bright
- Engine start light illuminates
- Boost Pump annunciator
- Ignition is armed
At 10% N2 - throttle to idle
- 10 seconds increase in fuel flow and raise in ITT
- 10 seconds increase in oil pressure
- 20 seconds N1 rotation
- at 48% N2 green light illuminated, ( ign, gen, boost pump, start lights extinguished)
2 start lights
Engine stares Limits
Engine Battery Start limits
Engine Starter - 3 attempts in 30 min with 60 sec rest
Batt - 3 starts in 60 min
With a DC Power loss, if Battery is left in BATT will leave you with approx ________ minutes and emergency will leave you with approx ________ minutes
10 minutes
30 minutes