Week 3: Who is in command

Protection, authority, and what it means to fly an aircraft that can decline your instructions

8 March 2027

A system that can refuse you is a system that has authority. The lecture covers what that means, and the fact that aviation has argued over it for fifty years without settling it.

Two positions, both held by serious people:

• the envelope is known, the consequences of leaving it are known, and a system that prevents you from leaving it removes an entire category of accident at no cost to anyone flying competently
• the situations in which a pilot needs authority the designer did not anticipate are, by definition, the situations nobody anticipated, and a limiter cannot distinguish them from carelessness

Both positions have accidents attached to them. We look at cases from each column, including one where the protection was correct and the pilot did not think so, and one where the pilot was correct and could not get the authority back.

The lecture then draws the distinction the period will drill:

• a limit is enforced by the aircraft, and you can stop thinking about it
• a restriction is written down and enforced by nobody

Almost everything that has killed people in this type lives in the second column.

Reading#

The operating limitations section. Read it twice: once for the numbers, once asking which of them the aircraft would actually stop you from exceeding.