Avionics: Communication, Navigation and Surveillance

Question 1

What unit within the avionics system controls the VHF COM 1 and VHF COM 2

Answer 1

The Integrated Avionics Unit 1 and 2 (GIA 1 and 2) respectively

Question 2

Where are the VHF COM 1 and 2 antennas located

Answer 2

COM1: Top of Fuselage
COM2: Bottom of Fuselage

Question 3

What actions occur when the MASK MIC switch is turned ON

Answer 3

1) Headset mic is turned off
2) Mask mic is turned on
3) Cockpit Speaker turned on

Question 4

What is the automatic cutout period for the Comm Transmitter

Answer 4

35 seconds

Question 5

Does frequency auto tuning occur when the CDI navigation source is ground based.

Answer 5

Into the standby only, not the active

Question 6

Why should you ensure the FMS Nav source is selected on both sides when loading an approach

Answer 6

Because if you are in green source, the frequency auto tune function will go to the standby, not the active possibly causing you to have the incorrect LOC frequency on the approach.

Question 7

What unit within the avionics system controls the following:

1) VHF NAV/ LOC/ GS 1 and 2
2) GPS/ SBAS/ WAAS 1 and 2

Answer 7

VHF NAV/ LOC/ GS 1 - Integrated Avionics Unit 1 (GIA 1)
GPS/ SBAS/ WAAS 1 - Integrated Avionics Unit 1 (GIA 1)
VHF NAV/ LOC/ GS 2 - Integrated Avionics Unit 2 (GIA 2)
GPS/ SBAS/ WAAS 2 - Integrated Avionics Unit 2 (GIA 2)

Question 8

What navigation sensors are used in long range (magenta) source?

Answer 8

GPS Only

Question 9

What type of operations are allowed by SBAS?

Answer 9

RNAV or GPS approaches to LPV or LP minimums

Question 10

When must RAIM availability be checked?

Answer 10

When SBAS or WAAS service is not available along the entire route of flight

Question 11

May an instrument departure or arrival (SID/STAR? be used if the navigation database is not current.

Answer 11

Yes, if each waypoint is verified by reference to current publications

Question 12

May and RNAV or GPS approach be used if the navigation database is not current?

Answer 12

No

Question 13

Is the use of LPV minimums authorized

Answer 13

Yes if SBAS/ WAAS is operative

Question 14

Is the use of LNAV/VNAV minimums (Baro-VNAV) authorized

Answer 14

Yes, except for approaches to airports with elevations above 5000ft

Question 15

Is it authorized to arm approach mode and couple the AFCS to GP on an approach with LNAV or LP minimums with advisory vertical guidance? (LNAV+V, LP+V)

Answer 15

Yes, but use caution not to descend below the published MDA until required visual references are established, unless the criteria in C073 are met. REMEBER altitude capture is inhibited with the GP as vertical mode, for this reason it is recommended to increase the BARO MIN by 50 feet (DDA) when using advisory vertical guidance