5 - AMC

Question 1

Describe AMC overview:

Answer 1

• 2 x AMCs located in nose (AMC1 (RHS), AMC2 (LHS) - AMC2 is Master)
• Each AMC has 2 Channels (1 & 2), with 5 x partitions per Channel
• Partitions are:
  
  • MAIN: HELIONIX config; Status and mode management
  • CIRM: Flt Data (FD) Rec.; FD Cont. Rec.; Maint. Data storage; Failure Mgmt
  • VMS: Veh. & Eng signal acq. and comps.; Alerting Function.; Clearance Tests
  • AFCS: AFCS processing; Air Data and AHRS monitoring
  • MEM: Memory

Question 2

How are the AMCs powered?

Answer 2

AMC1: powered directly from ESS2 and NO SHED2
AMC2: powered through a Common Relay Box from EMERG1 and NO SHED 1

Common Relay Box:
- contains 2 x power switches
- power switches can be switched off by SHOCK SENSORS (1&2)
- SHOCK SENSORS respond to impacts, such as bird strikes

Question 3

What are the functions of the VMS partition?

Answer 3

• Vehicle and Engine Management VMS/UMS
  - Ctrls/Monitors systs inc. Eng, Hyd, Elec, Fuel, LG, Air Con, Xmsn, Fg Ctrl posn, Fire, Ice, etc
• Clearance Tests
  - Monitors 4 TESTS prior to take off
  - Barriers to catch system failures prior to take off
• Alerting

Question 4

What are the 4 ‘TESTS’ prior to Take Off, how are they each initiated, and what do they check?

Answer 4

PWR-UP TST: Automatic When batteries are switched on Most systems
P-START TST: Manual When HYD AUX PUMP is TEST Hydraulics
START-UP TST: Automatic When the 1st engine is started Hydraulic/Fuel/Elec/Nr/ECS-Eng
P-FLT TST: Manual. When P-FLT TEST sw. is activated AFCS/RadAlts/Ext. avionics to MFDs