SYS 108 - Electric and Fuel Review

Question 1

What are some indications both annunciator wise and data wise of low fuel pressure?

Answer 1

Engine Fuel pressure is dropping and/or fluctuating, the boost pump engages or cycles on/off.

Annunciators:
MASTER WARN
FUEL PX
BOOST PUMP

Question 2

You hear a aural tone with a MASTER WARN flash. The CWS has the following on it, what happen?:
Only the red BAT BUS annunciator is lit

Answer 2

The front Bat Bus circuit breaker has popped

Question 3

What annunciators do you expect to see if the Bat Bus failed?

Answer 3

a. BAT BUS
b. OIL PX
c. HYDR FL LO
d. PMU STATUS
e. TRIM OFF

Question 4

What annunciators do you expect to see if the Gen Bus failed?

Answer 4

a. GEN BUS
b. TAD FAIL
c. TAD OFF
d. FUEL BAL

Question 5

What are some indications for an INOP Generator

Answer 5

a. Master Warn
b. GEN annunciator
c. ESD Indications confirm GEN fail
d. Less than 24V
e. Amps discharging

Question 6

The auto balance system remains on when a fuel probe fails. (T/F)?

Answer 6

False, when a fuel probe fails the auto balance system shuts off.

Question 7

If the BAT bus fails, what is the most noticeable instrument failures?

Answer 7

EADI, AEDD, GPS, AOA, clock, pressurization

Question 8

Does fuel leaking from the wing trigger the MASTER WARN or MASTER CAUTION annunciators?

Answer 8

No, only indication is visually.

Question 9

What provides an accurate indication of minimum fuel level if the fuel probe fails?

Answer 9

The low fuel warning lights

Question 10

If both the Battery AND Generator fail, what systems will work?
What has to happen/be on for these systems to work?

Answer 10

a. Standby UHF and UHF control head
b. Fire 1 detection system
c. Standby Instruments
d. Standby Flood Lighting

The Aux Bat switch must be on

Question 11

You hear a aural tone with a MASTER WARN flash. The CWS has the following on it, what happened?:
Only the red GEN annunciator is lit

Answer 11

The Gen has failed

Question 12

If the Gen Bus fails, what electronic instrument displays remain?

Answer 12

Just the EADI and AEDD

Question 13

If the generator is INOP and the bus tie is open/failed, what flight instruments will remain?

Answer 13

EADI and AEDD

Question 14

What are some indications of a fuel probe failure?

Answer 14

MASTER CAUTION
FUEL BAL annunciator
FP FAIL on AEDD

Question 15

What indications tells you the bus tie is INOP?

Answer 15

Amber BUS TIE annunciator

Question 16

You hear a aural tone with a MASTER WARN flash. The CWS has the following on it, what happened?:
Only the red GEN BUS annunciator is lit

Answer 16

Gen bus circuit breaker has popped.