Scenario 51: What characteristic defines Class E airspace?

Question: Scenario 51: What characteristic defines Class E airspace?

Answer options:

• Requires IFR flight plan, ATC clearance. ✅ Controlled airspace where ATC services are provided to IFR and VFR flights, but VFR traffic is not explicitly separated from IFR traffic.
• Uncontrolled airspace below 18,000 feet ASL.
• Only VFR flights permitted with a flight itinerary.

Correct answer: Controlled airspace where ATC services are provided to IFR and VFR flights, but VFR traffic is not explicitly separated from IFR traffic.

Explanation: Class E airspace is controlled airspace, extending upwards from either the surface or a designated altitude, where ATC services are provided, but VFR traffic is not usually explicitly cleared or separated from IFR traffic. The correct answer is "Controlled airspace where ATC services are provided to IFR and VFR flights, but VFR traffic is not explicitly separated from IFR traffic.". This capacity-fill scenario 51 reinforces the same competency for the pstar bank and follows the certified explanation standard.