4b

Question 1

This is the primary source of attitude (pitch / roll), ground speed and heading info for WXR antenna stabilization circuits

Answer 1

INS inertial navigation system

Question 2

This has an altitude range of 0-2500 ft

It provides true altitude AGL 

Answer 2

Radio altimeter No. 1

Question 3

This provides a weight on wheels signal to the WXR system to engage PWS

Answer 3

Landing gear

Question 4

This must be down and locked

Answer 4

Landing gear

Question 5

This is the primary interface between the FDS, I NS, GPS, COM, & SURV systems and navigational aids like WXR

Answer 5

Flight management system FMS

Question 6

This provides LCD video display and range control on MFD for WXR

Range selection 2.5-320 NM

Answer 6

Flight display system FDS 

Question 7

This helps prevent accidents caused by controlled flight into terrain (CFIT) 

Answer 7

Enhanced ground proximity warning system  EGPWS

Question 8

This provides aural warning signals

Answer 8

Interphone system