Engine Start Flashcards
Max EGT Engine Start
495 until the limit bar moves
Eng Start - After initating start, how long until N2% is observed (secs)
20
Oil Pressure required before introducing Fuel
5Ppsi
Max EGT before introducing fuel (°C)
190
N2% to introduce fuel
18% is the lower limit according to the dash1
However 20% is the standard on the line for a faster and cooler start as recommended in dash 1
Which Engine Ignition source
A Home base
A - Odd days
B - Even days
A & B - Below 0°C
What air pressures are required for the different types of Engine start (PSI)
20 Apu
25 Cross-bleed start
30 External Air source (Cart / Buddy)
What Donor Engine N2% required for Cross-bleed start
70-75% (advance throttle 3/4 off a knob width)
Hyd Aux Pressure for Engine start (PSI)
3,800
When testing the Hyd transfer pump during engine start what are the 2 min pressures
3,400 on EDPs (normally how its done)
3,000 if on Aux only
Expected Fuel flow during start (pph)
400-500
If fuel flow exceeds what pph during engine start prior to EGT rise should you stop to avoid a hot start
700
Following a Hot-Start what should you immediately do?
Engine Clearing Procedure
By what N2% should N1% be indicating?
40% Standard
30% on a cold day
The starter button pops out but the light remains on, how long can this stay on for and what should you do when this time elapses?
30 Seconds
If not isolate the air source and then shut the engine down
