Upper Airspace

Upper airspace in aviation refers to the altitudes above 24,500 feet (FL245). This region is primarily used by commercial jet airliners and is subject to unique regulations and protocols. Historically, the development of upper airspace coincided with the emergence of faster, higher-flying aircraft like the British Overseas Aircraft Corporation's Comet, which began commercial jet service in 1952. The FAA has a role in managing this airspace, ensuring safe and efficient flight operations at these higher altitudes.

Key Aspects of Upper Airspace

• Altitude Range: Above FL245 (24,500 ft).
• Primary Users: Commercial jet airliners.
• Regulation: Subject to strict rules and regulations, often under the control of air traffic controllers.
• Airspace Class: Typically classified as Class A airspace, which extends from 18,000 ft to FL600 (approximately 60,000 ft) in the US.
• Flight Rules: Flights in Class A airspace are generally conducted under Instrument Flight Rules (IFR).
• History: The development of upper airspace is linked to the advancements in aircraft technology, particularly the rise of commercial jet travel in the 1950s and 1960s.
• Management: The FAA and other aviation authorities play a crucial role in managing and regulating the use of upper airspace, ensuring safe and efficient flight operations.