5 votes
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Why does the surface-level Class E airspace at SIT/PASI (Sitka Alaska) extend so far to the northwest?

The LDA/DME RWY 11 approach puts you darned close to 1000 AGL over those mountains if you come in from HEXAB on the localizer - and that assumes you fly it perfectly. The course reversal for that ...
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3 votes
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How did ICAO SARPS come to include the 250 knots speed limit for aircraft below 10,000 feet?

VFOP (1985) The speed limits are in Appendix 4 to ICAO SARPs Annex 11, which is all about the A–G airspace classes, and this is the clue I've been missing all along, because the ICAO airspace ...
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3 votes
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What is meant when "flying/operating below Controlled Airspace"?

It seems you're in the UK, and there are 5 different types of airspace (A, C, D, E and G), each of which have different rules about clearances required, minimum visibility etc. As you have noticed, ...
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3 votes

What Class Airspace Surrounds TRI Cities?

The Grey outlined area surrounding TRI-Cities airport is a "Terminal Radar Service Area" (TRSA). See this information from the Aeronautical Information Manual (AIM) paragraph 3-5-6, and this ...
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1 vote
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What Class Airspace Surrounds TRI Cities?

The airspace at Tri-Cities Airport is Class D when the tower is open and surface-level Class E when the tower is closed. The shape of this airspace is a simple circle, 4.3 miles in radius. There is ...
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1 vote

Why does the surface-level Class E airspace at SIT/PASI (Sitka Alaska) extend so far to the northwest?

As another answer has noted, the surface-level Class E "extension" to the northwest of SIT/PASI is indeed intended to protect the LDA/DME RWY 11 approach. In the July 20 2021 edition of the &...
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