Instrument IQ — December 2020/January 2021

Avatar for John MontgomeryBy John Montgomery | December 8, 2020

Estimated reading time 3 minutes, 36 seconds.


Test your instrument flight rules (IFR) proficiency and sharpen your piloting skills with this exclusive Skies feature! Examine the following approach plate and take your best shot at the accompanying questions:

Fort Nelson, B.C. (CYYE)


Instrument IQ test

Click the question to see the answer

1. Is a current altimeter setting available at this airport on a 24/7 basis?
Yes, although the ATIS operates limited hours, Fort Nelson Radio operates continuously.

2. What minimum ceiling and visibility would you need to achieve a successful landing if completing the ILS 04 approach, and is an approach ban a possibility on this approach?
A minimum ceiling of 200′ and ½ SM; and no approach ban due to the fact that this RWY is not RVR equipped. 

3. You are 20 NM back from the YE NDB on an inbound track of 150 degrees and cleared for this approach via a full procedure. What minimum altitude can you now legally descend to, and how much obstacle clearance does it provide?
You may now descend to Minimum Sector Altitude of 4300; and it provides 1000′ of obstacle clearance.

4. In the event of a missed approach, what would be your course of action upon arrival at the clearance limit prior to receiving further clearance?
 Hold as published at 4000′, via either an offset or parallel entry. 

5.As per the above full procedure approach, the maximum outbound distance from the YE NDB must not exceed ___ NM.
8 NM. 

6. If shooting this approach in an aircraft with an approach speed of 125 KIAS, and planning to circle for RWY 26 due to winds, what would be your MDA and how much obstacle clearance is provided at MDA?
MDA is 1960 ASL and provides for a minimum of 300′. 

Spoiler title
At 125 KIAS, we are a Category C aircraft; and Nav Canada provides for a radius of 1.7 NM from the runway thresholds. 

John Montgomery is the founder and president of Professional Flight Centre in Delta, B.C., which was established in 1986. A 12,000-hour ATPL pilot and Multi IFR instructor, John also specializes in ground school and seminar instruction. John can be reached at

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