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Hey guys, obligatory "I just failed my CPL Law exam" and had a confusing one I was wanting some help with if possible...
You are cruising VFR in Class G Airspace below a cloud base of 5000ft, and above terrain of 2500ft, with a magnetic track of 228°, what cruising level would you use while conforming to the 'table of cruising levels'
A) No appropriate level
I chose 'A' because you can't fly at 4500ft in accordance with the table of cruising levels and maintain 1000ft separation , and a friend chose 'C' because below 5000ft you aren't fully restricted to table of cruising levels and have 1000ft separation from cloud. And it seems we both got this question wrong?
In sample papers, these questions ask for the lowest level.
Draw a situation diagram (showing height of terrain, height of cloud base, difference between terrain and cloud base).
AIP ENR 1.2 Table 2.5, Item 3 says for Aeroplanes...
At or below - whichever is the higher - of: (a) 3,000FT AMSL; (b) 1,000 AGL
the applicable distances for vertical and horizontal Distances from Cloud (and) Visibility is Clear of cloud and in sight of ground or water
AIP ENR 1.7-3.1.4 says...
Subject to ATC instructions, a VFR flight must be flown at a cruising level appropriate to its magnetic track according to Section 5. Table B or Section 6. Table B:
a. whenever the flight is conducted a height of 5,000FT AMSL or more; or b. if the flight is conducted at a height of less than 5,000FT AMSL whenever practicable (CAR 173)
Let's look at the different options
A ) No appropriate level - this could be a candidate answer subject to the other options
B ) A045 - We're more than 1000ft AGL and more than 3000 AMSL, so Table 2.5 item 3 does not apply, but item 2 applies and says we must be 1000ft vertically separated from cloud, which we're not when the base is 5,000 - so this won't work. No need to look at cruising levels.
C) A040 - We're more than 1000ft AGL and more than 3000 AMSL, so Table 2.5 item 2 applies and we 1000 ft below the cloud base. It also meets the requirements of AIP ENR 1.7-3.1.4 as we're below 5,000 feet AMSL - this is a candidate answer
D) A035 - We're 1000ft AGL so Table 2.5 item 3 applies! We can remain clear of cloud; and we're still compliant with AIP ENR 1.7-3.1.4 - this is a candidate answer
Now I suspect the question was asking the lowest compliant level, in this case the answer is D: A035
Anytime you have cruising level questions, reference ENR 1.2 section 2; and ENR 1.7 crusing tables. They go hand in hand.