TD48

Question 1

Define the following and explain its relevance to you as an army aviator:

A. Indicated altitude
B. Pressure altitude
C. Density altitude

Answer 1

A. The altitude read off the altimeter with a current altimeter setting in the kollsman window. Important for terrain avoidance, aircraft separation, airspace compliance.

B. The height measured above the standard datam plane. Important for performance planning (finding DA)

C. The altitude for which a given air density exist in the standard atmosphere (pressure altittude corrected for non-standard temperature, pressure, and humidity.) important for performance planning

Question 2

Concerning VORs, what is the only positive method of identification and what is the course accuracy

Answer 2

Morse code or voice

+-1° and the max is 2.5°

Question 3

Concerning VOR standard service volume:

A. What is the range of L,H,VL, and VH class VORs from 1000ft to 5000ft above transmitter height?

B. What is the SSV range principally used for?

Answer 3

A. 40nm

B. Off route navigation

Question 4

Define and explain application of the terms:

A. MIA
B. MEA
C. MOCA
D. OROCA

Answer 4

A. Minimum IFR Altitude, the lowest you can fly ifr. UNPUBLISHED 1000 (non mountainous) or 2000 (mountainous.) published would be the MEA etc (or assigned by atc)

B. Minimum Enroute Altitude, the lowest published altitude between radio fixes that assures obstruction clearance and navigation signal for the entire route

C. Minimum Obstruction Clearance Altitude, the lowest published altitude where obstruction clearance is assured. Navigational signal is assure within 22NM of a navaid.

D. Off route obstruction clearance altitude, provides off route obstruction clearance. 1000 non mountainous and 2000 mountainous

Question 5

Define and explain application of the terms:

A. MRA
B. MCA
C. MVA

Answer 5

A. Minimum reception altitude, the lowest altitude that an intersection can be determined

B. Minimum crossing altitude, the lowest altitude that you can cross a certain fix. Typically means that the MEA will be higher after crossing said fix

C. Minimum vectoring altitude, the lowest altitude that an aircraft can receive radar vectoring from atc

Question 6

Explain the difference between “homing” and “tracking” inbound to a station. Which procedure should be used on IFR flights when cleared direct?

Answer 6

Homing: no wind correction

Tracking: has wind correction

You should use tracking when cleared direct

Question 7

Procedural steps for executing task 1170 through 1178:

next event- anything that will require you to perform ___ or ___ of the “5 T’s”

The “5 T’s” are: ___,___,___,___,___

Answer 7

Start clock, turn towards course, tune correct nav freq/source, begin climb/descent, contact controlling agency

One or more

Time
Turn
Tune
Torque
Talk