SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/pilot-class-d-ceiling

Class D airspace typically extends up to about how high above the airport elevation?

About 2,500 feet above the airport elevation.

  1. 1,200 feet
  2. 4,000 feet
  3. 2,500 feet ✔

Why: The AIM says Class D generally reaches up to 2,500 feet above the airport elevation around an airport with an operating tower. 4,000 feet is the typical top of Class C.

Huh, didn't know that: Sectional charts outline Class D airspace with a dashed blue line.

The dad joke
Why is Class D airspace never lonely? Someone in the tower is always listening.
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Sources

  1. AIM 3-2 Controlled Airspace (Class D) https://www.faa.gov/air_traffic/publications/atpubs/aim_html/chap3_section_2.html
  2. 14 CFR 91.129 Operations in Class D airspace (eCFR) https://www.ecfr.gov/current/title-14/chapter-I/subchapter-F/part-91/subpart-B/subject-group-ECFR3f95a6b1f3e7a4b/section-91.129

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