AIRPLANE
OPERATIONS
MANUAL
SUPPLEMENTARY
PROCEDURES
ENGINE
REVISION 17
1-02-81
Page
1
Code
01
ENGINE START WITH AIRPLANE BATTERIES
AND LOW PRESSURE UNIT (LPU)
This procedure may be used when operating without APU or GPU but
with the batteries and a Low Pressure Unit (LPU) available for engine
start.
NOTE:
- Before attempting to start the engines using the batteries
ensure that minimum batteries voltage is 24.0 VDC.
- Accomplish a BEFORE START - FIRST FLIGHT procedure
as soon as the electrical source is established.
- The Captain may elect to start the remaining engine using
the LPU or to perform a crossbleed start.
- The engines pneumatic start does not affect the electrical
system or the individual loads connected to it. The voltage of
the buses fed by the batteries remain steady during engine
starts, with no power transients. After the first engine start
and with generators on line, the normal electrical system
voltage will be between 24 V and 28.5 V.
- It is recommended that audio communication with the ground
crew be used instead of signaling.
BEFORE START
Internal and External
Safety Inspections ................................................... ACCOMPLISH
Parking Brake ............................................................... ON
Batteries 1 & 2............................................................... AUTO
Avionics Masters........................................................... ON
Batteries Voltage........................................................... CHECK
Avionics Masters........................................................... OFF
Emergency Lights .........................................................ARM
Fire Detection System................................................... CHECK
Crossbleed.................................................................... OPEN
Packs ............................................................................ OFF
Engine Bleeds ............................................................... CLOSE
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