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What's wild is that a connector not being fully screwed in by mistake prevented a very expensive jet full of a lot of fuel from lawn-darting (and potentially killing a lot of people. Crashing fighters seem to have a knack for ending up in dense residential housing areas.)

The solo switch according to the youtube fighter pilot video is so that a solo pilot doesn't have to wait for the rear seat to fire if they activate an ejection.

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I'm curious about that explanation--in the seats I'm familiar with, initiation (including all the different potential sequencing modes) is done entirely through an explosive train to prevent this exact failure mode (loose Cannon plugs cause plenty of other problems though).

We're talking about different things. In "forward both, aft self" mode a front-seat-initiated ejection still ejects both seats in the normal sequence, while in "solo" mode it would only eject itself. For obvious reasons, you would never fly with a passenger in "solo" mode.

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