IF Navigation

Question 1

When are altimeter checks required?

Answer 1

Every 1000ft
200ft before level off
Commencing descent/climb

Question 2

How many satellites are required en route and approach to maintain within PBN limits?

Answer 2

6 or more

Question 3

Explain what colour is associated with which NAV source for the CDI bar?

Answer 3

VOR/ILS = Blue colour
ANAV (GNSS data) = Green colour

Question 4

During IF cruise, what AFCS modes are best?

Answer 4

3 axis mode, ALT and NAV/HDG modes

Question 5

You were flying along, selected NAV mode and the aircraft turned in a direction that you didn’t expect, what are your actions?

Answer 5

Reselect HDG mode, why did the aircraft do that?

Question 6

Explain what levels of OEI accountability there are enroute? (3)

Answer 6

Unaccountable: At LSALT level flight is not possible OEI
Accountable at LSALT: At LSALT level flight is possible OEI
Accountable at cruise: At cruise, level flight is possible OEI

Question 7

If the OEI accountability point is a while into the flight, what work around can be used?

Answer 7

• Fly high above the LSALT, with 100ft/min RoD, then 10 mins per 1000ft, effectively a glide range to descend to enroute low ground or nearby aerodrome MSA

Question 8

When planning IFR, should flight through controlled airspace be avoided?

Answer 8

No, flight through controlled airspace is much easier

Question 9

When planning to use RNP for a NAV, what kinds of systems can be used as backup in case GPS fails?

Answer 9

VOR/TACAN
Airports with radars

Question 10

What RoC is required for the departure and missed approach?

Answer 10

Departure: 3.3%, 250ft/min @75KIAS
MA: 2.5%, 190ft/min @75KIAS

Question 11

What is an LSALT accountability point and how is it calculated?

Answer 11

• Is the point in the nav where the aircraft is able to maintain LSALT OEI.
• Calculate a weight where 0ft/min is possible at LSALT, determine how long it would take to burn enough fuel and determine a distance for that to happen

Question 12

Outside of the departure brief/actions on, what is required in circumstances when OEI RoC cannot meet the climb gradient:

Answer 12

Assuming 1000ft/min RoC AEO, every 1NM upwind you will have approx 750ft above the departure gradient.

Using the drift down RoC, you must be able to at the edge of the circling area be able to get back in a glide like profile

Question 13

What can be set for bingo/joker?

Answer 13

Bingo = Alternate divert fuel OR OEI mass lvl flt @Cruise
Joker = Alternate divert fuel + approach OR OEI mass lvl flt @LSALT

Question 14

What is the standard approach fuel and how can it be modified?

Answer 14

Standard = 10 mins or 60kgs

If a very efficient approach, use 5 mins, if inefficient, use 15 mins

Question 15

How many satellites are required for accurate tracking?

Answer 15

6 satellites

Question 16

Regarding alternates, most aerodromes require an alternate due to a lack of seperate approaches, what is the exception to this?

Answer 16

The aerodrome has an ILS with marker beacons (GPS not req) and a time based VOR

Question 17

ATC has requested you track direct toward an WP you don’t have saved, what is you best option?

Answer 17

Request vectors

Question 18

Under what circumstances can a pilot manually enter WPs and what restrictions are associated?

Answer 18

• Must be an emergency (RNAV only aerodrome, low fuel, no alternates)
• Must be cross checked

Question 19

What format coordinates does the aircraft accept and how can they be converted?

Answer 19

• Aircraft only uses DMD (degrees, minutes, decimal minutes)
• To convert DMS to DMD divide seconds by 60

Question 20

What distances/times are associated with traffic that presents a significant risk?

Answer 20

Within 10 mins, 10NM or 1000ft

Question 21

You are approaching the hold when another aircraft is entering the missed approach to reenter the hold,how high should you fly?

Answer 21

Fly +1000ft from the missed approach height

Question 22

Explain the biggest difference with jeppesen plates:

Answer 22

They have a briefing panel at the top
Don’t have the shaded box to reduce MDA/DH by 100ft