Super 80 Professional – AOM
NORMAL PROCEDURES
Section 3 Page 21
Super 80 Professional – Aircraft Operating Manual
Coolsky, 2018
APU START
APU START (Procedure)
Use this procedure to start the APU both on the ground and in-flight.
BATTERY SWITCH ....................................................................................................................... ON
1.
Set the battery switch to the ON position.
APU DOORS .......................................................................................................................... AUTO
2.
Make sure the guarded switch is set to AUTO. Note that when the guard is on, the switch
is in the AUTO position.
APU AIR .................................................................................................................................... OFF
3.
Set the APU Air switch to OFF.
APU FIRE CONT ................................................................................................................... NORM
4.
Set the APU FIRE CONT switch to the NORM position.
START PUMP.............................................................................................................. AS REQUIRED
5.
If AC electric power is not available (no ground power connected and no engine
running), set the START PUMP switch to ON. Otherwise, leave the switch in the OFF
position.
FUEL BOOST PUMPS ................................................................................................. AS REQUIRED
6.
If AC electric power is available (ground power connected and/or engine(s) running), set
the RH Aft Fuel Boost Pump switch to ON. Note that you do not need to have both the
Start Pump and a Fuel Boost Pump running simultaneously, only one of them is required.
APU MASTER ......................................................................................................... START/RELEASE
7.
Momentarily move the APU MASTER switch to START (spring loaded back to RUN).
8.
Check that the APU RPM and APU EGT start rising.
9.
Check that the APU OIL PRESS LOW light goes out at or prior to 95% RPM.
APU RUNNING AND ELECTRICAL POWER ESTABLISHED
10.
When APU RPM and APU EGT has stabilized…
11.
…and APU power has been connected to the AC buses, continue the APU Start
procedure. (Both switches on and both lights on)
FUEL BOOST PUMPS ................................................................................................. AS REQUIRED
12.
Normally, the RH Aft Fuel Boost Pump is used for APU operation. However, the center
tanks may also be used for APU operation at the Captain’s discretion. Set the RH Aft Fuel
Boost Pump switch to ON.
START PUMP.............................................................................................................. AS REQUIRED
13.
If the Start Pump was used to start the APU, set the Start Pump switch to OFF.
APU AIR .................................................................................................................... AS REQUIRED
14.
Set the APU Air switch to ON.