Card - Battery Switch

Question 1

When the BATT switch is BATT

Answer 1

closes Batt Relay, energizing the entire system for a min of 10 min

Question 2

When the BATT switch is OFF

Answer 2

isolates battery and APU power from all buses except Hot Batt Bus

Question 3

When the BATT switch is EMER

Answer 3

Allos a min of 30 min power to the Hot Batt Bus and 2 Emergency busses

Question 4

What is on the Hot Batt Bus

Answer 4

• Lights
  
  • Cabin Entrance
  • Baggage Compartment
  • Tail Cone
• Aux had Pump
• Primary Trim (In Air - Squat Switch)
• Voltmeter
• Fuselage Tank Fill
• Ignition (Start Only)
  -Batt disconnect switch
• Nosewheel Steering Acc. Dump Valve

Question 5

With the Batt switch in EMER and the generators in the off position the following will be operational:

Also if BATT switch is off due to overheat and generators are on according to the OM the following will be operational:

Answer 5

• Cockpit floor lights, emergency
  lighting, Cabin entrance lighting
• N1 and ITT
• Lt/Rt F/W S.Off, Lt/RT Fire Det + Ext
• Stby Att Indicator
• Pilot P/S
• AC Inverter
• Air Data Comp 1
• Pilots Alt, Airspeed, IVSI
• AHRS (No. 2)
• DG 1 / RMI 1
• Nav 1 & Comm 1
• Aux Hyd Pump
• Primary and Secondary Pitch Trim
• Horizontal Trim Advisory

Question 6

With the Batt switch in EMER and the generators in the off position

Environmental Control Implications:

Answer 6

• Press control fails to MANUAL
• Both PACS fail ON
• PAC bleed fail to HP
• EMER Press fails OFF

Question 7

With the Batt switch in EMER and the generators in the off position

Anti - Ice Implications:

Answer 7

• Nacelle, wing and W/S A/I fail ON
• Pitot/Static, AOA, wing root, generator inlet heat, Horizontal Stab anti-ice & W/S alcohol is INOP

Question 8

With the Batt switch in EMER and the generators in the off position

Hydraulic Implications:

Answer 8

-LG will not operate normally
- Nosewheel steering fails ON
- Anti-Skid INOP
-TR INOP

Question 9

With the Batt switch in EMER and the generators in the off position

Flight Control Implications:

Answer 9

• AP INOP
• EFIS Display INOP
• Aileron boost sys INOP
• Flaps INOP

Question 10

With the Batt switch in EMER and the generators in the off position

Engine Operation Implications

Answer 10

• EEC/DEEC fail to manual