Recommended APU Supply Pressure
20 psi
Recommended Cross Bleed Supply Pressure
25 psi
Recommended External Pneumatic Supply Pressure
30 psi
After pressing the start button how much pressure do we need to see on demand?
15 psi
While priming the Hyd panel, Aux Hyd Pump pressure should read what pressure?
3800 psi
What should the pressure be when checking the HYD XFER pump from #2 to #3?
3,400 psi if using Engine Driven Pumps
3,000 psi if using the AUX HYD Pump
The engine start may be continued if the associated air conditioning pack is deselected prior to…?
18% N2. If greater than 18% STOP START
N2 rotation displays on the MFD at approx what % N2?
10%
Engine Oil Pressure needs what psi before turning the ENG SHUT OFF Switch to On?
5 psi
Engine EGT needs to be below what temp before turning the ENG SHUT OFF Switch to On?
190 degrees C
What % N2 do you look for when turning the ENG SHUT OFF Switch to ON?
18% N2 Minimum; 20% for faster/cooler starts
What is the typical fuel flow before lightoff?
400-500 pph
When should EGT rise after introducing fuel?
Within 20 seconds
At what EGT temp should you STOP START?
Exceeds or is about to exceed 495 degrees C
When should you see N1 pop up during Engine start?
Prior to 40% N2 (OAT above 0 degrees C); prior to 30% N2 (OAT 0 degrees C or less)
Engine Start button should release at what % N2?
51% N2
Manually pull out the engine start button by what % N2 if it does not release?
55% N2
After the engine start button releases the light should extinguish when?
within 30 seconds of the button popping out
If the engine start button light remains illuminated after 30 seconds what should you do?
Isolate all the air sources to the engine and stop start.
What is the typical fuel flow for an engine after it is fully started?
800-1200 pph
Min Eng Idle Values (N2%) (sea level through 6,000 field elevation)
0 degrees C - 58% N2
15 degrees C - 60% N2
30 degrees C - 62% N2
45 degrees C - 64% N2
(1% N2 for every 2,000ft above 6,000ft field elevation)
What is the engine starter duty cycle?
max of 5 start attempts in 1 hour followed by a 1 hour min cooling period.
2 consecutive starts are allowable without a cooling period between attempts. A 15 min cooling period is required before a 3rd start attempt. Subsequently allow a 10 min cooling period between start attempts.
(motoring the engine for 30 seconds during the engine clearing procedure is not considered a start)
How long do you need to wait before reengaging the starter?
40 seconds after N2 RPM goes out on the MFD engine display
