An auto land system displays Land 2 another failure will make the system
- simplex
- passive
- operational
Explanation
A Land 2 (fail-operational) annunciation means two autoland channels remain; losing one more leaves a single channel, so the system degrades to fail-passive, where a further fault causes a safe disconnect with no large transient rather than continuing the automatic landing. It does not stay fully operational on one channel.
Gibbo280490 asking:
Why would this not be simplex if it was origionally Cat 2? i thought a Cat 3 failure makes is Passive?
Community Comments (1)
J
Jordi Posts: 198 19.11.2022 / 17:24
its passive
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