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Quiz: Are You Ready For High Altitude Flight?

Want to fly high and fast?


  1. 1) You're climbing to 15,500 feet MSL. Since your airplane is unpresssurized, at what point are you required to put on oxygen?
    stem-1 Swayne Martin

    FAR 91.211 (a )(2) says you can't pilot an aircraft at cabin pressure altitudes above 14,000 feet (MSL) unless the required minimum flight crew is provided with and uses supplemental oxygen during the entire flight time at those altitudes.

    FAR 91.211 (a )(2) says you can't pilot an aircraft at cabin pressure altitudes above 14,000 feet (MSL) unless the required minimum flight crew is provided with and uses supplemental oxygen during the entire flight time at those altitudes.

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  2. 2) You're still in the climb - when do you need to provide oxygen for your passengers?
    stem-2

    FAR 91.211 (a)(3) says you can't fly at cabin pressure altitudes above 15,000 feet (MSL) unless each occupant of the aircraft is provided with supplemental oxygen.

    FAR 91.211 (a)(3) says you can't fly at cabin pressure altitudes above 15,000 feet (MSL) unless each occupant of the aircraft is provided with supplemental oxygen.

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  3. 3) You want to climb to 22,000 feet MSL to take advantage of tail winds. When do you need an IFR clearance?
    stem-3

    Class A airspace starts at 18,000 feet MSL, and you need an IFR clearance to get in.

    Class A airspace starts at 18,000 feet MSL, and you need an IFR clearance to get in.

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  4. 4) If you take a Cirrus SR-22T up to FL250, do you need a high altitude endorsement? (The SR-22T is unpressurized, and has a max operating altitude of 25,000 feet.)
    stem-4 Geoff Collins

    FAR 61.31 (g) says no person may act as pilot in command of a pressurized aircraft (an aircraft that has a service ceiling or maximum operating altitude, whichever is lower, above 25,000 feet MSL), unless you have a high-altitude endorsement. Since the SR-22T is unpressurized and has a max operating altitude of 25,000 feet, you don't need the endorsement.

    FAR 61.31 (g) says no person may act as pilot in command of a pressurized aircraft (an aircraft that has a service ceiling or maximum operating altitude, whichever is lower, above 25,000 feet MSL), unless you have a high-altitude endorsement. Since the SR-22T is unpressurized and has a max operating altitude of 25,000 feet, you don't need the endorsement.

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  5. 5) You're cruising at FL250 when your oxygen system fails. If you remain at FL250, approximately how long is your useful consciousness?
    stem-5 Philiar

    According to the Pilot's Handbook of Aeronautical Knowledge, you have 3-5 minutes of useful consciousness at 25,000 feet. 

    According to the Pilot's Handbook of Aeronautical Knowledge, you have 3-5 minutes of useful consciousness at 25,000 feet. 

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  6. 6) You're cruising at FL230 with an indicated airspeed of 160 knots on an ISA (International Standard Atmosphere) day. Your true airspeed is:
    stem-6 Erik Brouwer

    As altitude increases, so does true airspeed. On a standard atmosphere day at FL230, your true airspeed is higher than your indicated airspeed.

    As altitude increases, so does true airspeed. On a standard atmosphere day at FL230, your true airspeed is higher than your indicated airspeed.

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  7. 7) You shift gears and hop in an SR-71 to get a little more altitude. You're at FL450 climbing to FL800 over the US. When do you leave Class A airspace and re-enter Class E?
    stem-7 USAF

    Class A ends at FL600 - everything above it is Class E.

    Class A ends at FL600 - everything above it is Class E.

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Well, that wasn't very easy...

You scored % You've had your shot, now pass it on for everyone else to try.

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Nice work, you have most of these rules down.

You scored % You've had your shot, now pass it on for everyone else to try.

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Nice work, you pretty much know it all.

You scored %. When it comes to high-altitude operations, you've got it covered.

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Colin Cutler

Colin is a Boldmethod co-founder, pilot and graphic artist. He's been a flight instructor at the University of North Dakota, an airline pilot on the CRJ-200, and has directed development of numerous commercial and military training systems. You can reach him at colin@boldmethod.com.

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