Airspace & VFR Weather Minimums

Correct

The answer is C: 3 SM; 500 ft below, 1,000 ft above, 2,000 ft horizontal

14 CFR 91.155(a) requires 3 SM flight visibility and cloud clearance of 500 ft below, 1,000 ft above, and 2,000 ft horizontal in Class C. The same minimums apply in Class D and in Class E below 10,000 ft MSL.

Source: 14 CFR 91.155(a) · AIM 3-1-4 · ACS PA.I.E

Correct

The answer is C: 3 SM; 500 ft below, 1,000 ft above, 2,000 ft horizontal

In the 91.155(a) table, the Class E row for below 10,000 ft MSL reads 3 SM visibility with 500 ft below, 1,000 ft above and 2,000 ft horizontal. The 5 SM and 1,000/1,000/1 SM figures begin only at 10,000 ft MSL, and 1 SM is the daytime Class G visibility.

Source: 14 CFR 91.155(a) · ACS PA.I.C

Correct

The answer is B: 5 SM; 1,000 ft below, 1,000 ft above, 1 SM horizontal

In Class E at or above 10,000 ft MSL, 91.155(a) requires 5 SM flight visibility and 1,000 ft below, 1,000 ft above, and 1 SM horizontal from clouds. Both the visibility and the cloud clearances increase together at 10,000 ft.

Source: 14 CFR 91.155(a) · ACS PA.I.C

Correct

The answer is A: 2,000 feet

Class D requires 3 SM visibility and 500 ft below, 1,000 ft above, and 2,000 ft horizontal from clouds; the 500 and 1,000 foot figures are the vertical clearances, not the horizontal one.

Source: 14 CFR 91.155(a) · ACS PA.I.E

Correct

The answer is A: 1 SM and clear of clouds

Class G at 1,200 ft AGL or less (regardless of MSL altitude) requires, for airplanes by day, 1 SM flight visibility and clear of clouds. The 1/2 SM value applies to helicopters.

Source: 14 CFR 91.155(a) · ACS PA.I.E

Correct

The answer is C: 3 SM; 500 ft below, 1,000 ft above, 2,000 ft horizontal

At night in Class G at 1,200 ft AGL or less, airplanes need 3 SM and 500 ft below, 1,000 ft above, 2,000 ft horizontal. The clear-of-clouds exception at night applies only in an airport traffic pattern within 1/2 mile of the runway (91.155(b)).

Source: 14 CFR 91.155(a)-(b) · ACS PA.I.C

Correct

The answer is C: 1 SM; 500 ft below, 1,000 ft above, 2,000 ft horizontal

In Class G more than 1,200 ft AGL but below 10,000 ft MSL, the day minimums are 1 SM visibility with 500 ft below, 1,000 ft above, and 2,000 ft horizontal. At night the visibility increases to 3 SM.

Source: 14 CFR 91.155(a) · ACS PA.I.C

Correct

The answer is C: 3 statute miles

91.155(a) requires 3 SM at night in Class G more than 1,200 ft AGL and below 10,000 ft MSL, with 500 ft below, 1,000 ft above, and 2,000 ft horizontal. By day the visibility requirement is 1 SM.

Source: 14 CFR 91.155(a) · ACS PA.I.E

Correct

The answer is A: 5 SM; 1,000 ft below, 1,000 ft above, 1 SM horizontal

In Class G more than 1,200 ft AGL and at or above 10,000 ft MSL, the minimums are 5 SM and 1,000 ft below, 1,000 ft above, and 1 SM horizontal, day or night, the same as Class E at that altitude.

Source: 14 CFR 91.155(a) · ACS PA.I.C

Correct

The answer is A: 1 SM and clear of clouds

The Class G row for 1,200 ft AGL or less applies regardless of MSL altitude, so at 1,000 ft AGL by day the minimums are 1 SM and clear of clouds even though you are above 10,000 ft MSL.

Source: 14 CFR 91.155(a) · ACS PA.I.C

Correct

The answer is A: No; at least 5 SM flight visibility is required

At or above 10,000 ft MSL in Class E the required flight visibility is 5 SM. At 11,500 ft MSL, 4 SM is not enough.

Source: 14 CFR 91.155(a) · ACS PA.I.C

Correct

The answer is B: 5 statute miles

The Class E minimums change at 'at or above 10,000 feet MSL,' so at exactly 10,000 ft the 5 SM visibility and 1,000 / 1,000 / 1 SM cloud clearances already apply.

Source: 14 CFR 91.155(a) · ACS PA.I.E