ELECTRICAL POWER
SOURCES
PE bus bar
• APR control unit
• Computer-AUTO, 1 and 2
• Computer-OVSPD PROT, 1 and 2
• ENG FUEL warning, 1 and 2
• HP cocks warning via fire detection sys-
tem
• Engine speed synchronizer
• Oil pressure indicators 1 and 2
• Oil temperature indicators 1 and 2
• OIL LO PRESS annunciators 1 and 2
PS1 bus bar
• No. 1 N1 RPM indicator*
• No. 1 N2 RPM indicator*
• No. 1 ITT indicators*
• No. 1 fuel flow indicator
*PE during internal engine start
PS2 bus bar
• No. 2 N
1
RPM indicator*
• No. 2 N
2
RPM indicator*
• No. 2 ITT indicator*
• No. 2 fuel flow indicator
*PE during internal engine start
THRUST REVERSER
SYSTEM
GENERAL
The Hawker-800 XP airplanes are equipped
with a Dee Howard TR5000BA Thrust
Reverser System. The system includes a thrust
reverser assembly at the rear of each engine
nacelle and various controls and indicators
located within the cockpit.
THRUST REVERSER
ASSEMBLY
Each thrust reverser assembly (Figure 7-21)
is an electromechanically controlled, hy-
draulically operated, target-type thrust re-
verser consisting of:
• Upper and lower clamshell doors lo-
cated on the rear of each engine nacelle
• Hydraulic actuators and associated link-
ages that position the reverser doors
upon either stow or deploy commands
•Latches which hold the reverser doors in
the stowed position until released by se-
quentially actuated switches and relays
•Fan flaps within each fan duct, which,
in reverser mode, aid in temperature re-
duction on the doors. They deploy and
stow in conjunction with the doors.
•Thrust reverser accumulator (1,500
psi minimum).
Revision 1
7-24
FOR TRAINING PURPOSES ONLY
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