Definition
An individual, who is not a crewmember, carried aboard a launch or reentry vehicle operated under FAA commercial space transportation authority. Space flight participants fly under informed consent rules rather than as paying airline-style passengers, and the operator must brief them on the risks of the flight before they fly.
Plain English
A person riding on a commercial spacecraft who is not part of the crew. They have been told about the risks and have agreed to fly anyway.
Context Anchor
Seen in commercial spaceflight rules, passenger briefings, and discussions about who may be carried on a launch or return flight.
Derivation
The phrase is built from ordinary words, but 'participant' was chosen deliberately by regulators instead of 'passenger.' A passenger expects the operator to guarantee safety; a participant has been informed of the risks and chooses to fly anyway. The wording reflects that commercial spaceflight is not yet held to airline safety standards.
Why Pilots Care
The term marks a legal distinction. Crewmembers have duties, training requirements, and medical standards. Space flight participants do not, but they must receive a written safety briefing and give informed consent. Anyone moving from aviation into commercial space operations needs to know which set of rules applies to whom.
Intuition Check
Do not assume “participant” means anyone involved in the mission. Here it means a person riding on the space flight who is not part of the operating crew.
Example Sentence 1
Before launch, the operator briefed each space flight participant on the known hazards of the flight and obtained their written consent.
Example Sentence 2
FAA rules require that every space flight participant receive a safety briefing specific to the vehicle.