Tag Archives: dme

Given: SHA VOR (N5243.3 W00853.1) DME 41 NM, CRK VOR (N5150.4 W00829.7) DME 30 NM, Aircraft heading 270(degrees)(M), Both DME distances decreasing. What is the aircraft position?”

Given:

SHA VOR (N5243.3 W00853.1)DME 41 NM
CRK VOR (N5150.4 W00829.7) DME 30 NM
Aircraft heading 270(degrees)(M)
Both DME distances decreasing.
What is the aircraft position?”

A: N5205 W00915

B: N5215 W00805

C: N5215 W00915

D: N5225 W00810

 

 

 

 

 

 

 

 

Answer: B

ICAO specifications are that range errors indicated by Distance Measuring Equipment (DME) should not exceed:

A: + or – 0.5 NM or 3% of the distance measured whichever is the greater
B: + or – 0.25 NM plus 1.25% of the distance measured
C: + or – 1.25 NM plus 0.25% of the distance measured
D: + or – 0.25 NM plus 3% of the distance measured up to a maximum of 5 NM

 

 

 

 

 

 

 

 

Answer: B

The aircraft DME receiver cannot lock on to interrogation signals reflected from the ground because:

A: DME transmits twin pulses
B: reflections are subject to doppler frequency shift
C: aircraft transmitter and DME ground station are transmitting on different frequencies
D: DME pulse recurrence rates are varied

 

 

 

 

 

 

 

 

Answer: C