Learjet 36A - Page 151

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111.11, •••• ill
DC POWER LOSS - ESSENTIAL BUS (Aircraft 35-202
thru 35-204, 35-206 & subsequent, aircraft 36-041 &
subsequent, and prior aircraft incorporating AMI< 78-13)
The pilot's and copilot's Essential A and Essential B Buses ate tied together
through the
ESS A BUS TIE and ESS B BUS TIE Circuit Breakers (copilot's
panel) respectively.
Upon loss of one ESS BUS Circuit Breaker, the corresponding ESS BUS
TIE Circuit Breaker will normally open also. The open ESS BUS TIE Circuit
Breaker will isolate
the pilot's and copilot's essential buses.
r - - -- - ,. - - - - - - ,
LOADS ESS A LOADS
I k~ t A ,II 'Wt t A , ~~ I
~ /' , ( ( f~f ( , ':!-... ....I.....
1__ ---< Left Essential A B~ Ir - "Right Essential A tSliJ-e --I
1
LOADS II ESS B LOADS
LESS At BUS A RESS
BBUS t 'TIE t ,BBUS
~ /' ( ( ( ( 'f" I
1__ ---< Left Essential B Bus~Ri9ht Essential B ~I
PILOT'S CB PANEL
L ___ _
.JL _ ~~S~~ _ .J
Rgure 3-2
IF AN ESS BUS CIRCUIT BREAKER OPENS IN FUGHT:
Affected Essential Bus:
1. ESS BUS TIE Circuit Breaker (copilot's panel) - Pull, if not already
open.
Do not reset the ESS BUS TIE Circuit Breaker.
2. Essential Bus electrical load - Reduce by pulling unnecessary sys-
tems circuit breaker.
Essential bus system loads
ate protected by circuit
breakers
on the same row as the essential bus circuit
breaker.
3. ESS
BUS Circuit Breaker - Reset.
3-6
FAA APPROVED 4-30-76
REISSUED 2-25-81, CHANGE 10