Nav 29 - EPL Flashcards
What is a position line?
A ling along which the aircraft was known to have been at a particular time
What are the two types of position lines?
Visual and electronic (NAVAID / Radar)
What equipment on the aircraft detects NDBs?
Automatic Direction Finding (ADF) equipment
How will the direction to the NDB be displayed?
With a yellow needle on the RMI
The tail of the yellow needle on the RMI gives us what information?
Compass bearing of the aircraft from the station
What is the procedure for obtaining an ADF position line (P/L)?
Have pilots tune the station
Identify the station (Morse code and expected needle direction)
Look at the tail of the needle to give us compass bearing of the aircraft from the station
Convert this to True Bearing by applying deviation and variation
What is the procedure for obtaining an EPL position line (P/L) from a VOR/TACAN?
Have pilots tune the station
Identify the station (Morse code and expected needle direction)
Read tail of the green needle to give the magnetic bearing of the aircraft from the station
DME ranges are obtained from the digital DME NAV indicators in the RMI display.
What is a notable difference between ADF and EPL P/L procedures?
EPL stations are plotted offset for variation and the equipment itself provides actual Magnetic bearing, not Compass.
ADF simply points to the station
What is the difference between Homing and Tracking? Which one is used at 402?
Homing: You fly the needle, do not apply drift.
Tracking: Apply drift to your needle
Tracking used at 402
What are the generic techniques to determine your Radar position?
Watch-Map-Ground Select realistic radar point ahead Locate radar point on scope Big to small Identify, place the cursor over point
Which is the best map option for Radar Fixing?
ONC (1:1 000 000)
JNC scale is not appropriate, not enough terrain detail
Review Questions
What is the difference between homing and tracking?
Tracking takes drift into account. We track inbound to a beacon at 402 Sqn.
