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Comment by emeidi | Hacker News Reader

So you say the pilot does not have switches in the cockpit to turn equipment on or off? They have to WALK through the whole plane to turn devices on or off?! Bollocks.

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The black box is in the tail of the plane, it doesn't make any sense to wire it through the whole plane so the pilot can switch it off from the cockpit.

I have no problem with your questioning my logic and my response, as I'm not expert, but keep your bollocks to yourself.

It makes perfect sense when the top priority is being able to isolate electrical systems in case of an electrical fault or an in-flight fire: http://www.askthepilot.com/malaysia-airlines-flight-370/

Why are you referring to the black box at all? ACARS and the Transponder signal the plane's position to the ground, not the black box.

Things that aren't meant to be turned on/off routinely by the pilot? why not? There's enough stuff going on in the cockpit...

I don't think it's supposed to be easy to turn off the tracking mechanisms of planes.

Wishful thinking. Aircraft are designed to be operated by professional crews -- not ex-convicts on work release. So, there are accessible circuit breakers to turn various things off.

It's called a circuit breaker. Just about every system, include the flight recorders, autopilot, and transponders can be independently turned off.

@danford was asserting that he didn't think there would be switches in the cockpit that allowed all tracking devices to be turned off. Are you countering his statement? Can you provide a citation?

I did some research on this, expecting to find a breaker labeled "CVR" on the diagram of 777 cockpit circuit breakers. Instead I found this: "the practicalities of isolating the power from the CVR fitted to the B777 are not straightforward since the CVR circuit breaker is located in the electronics bay of the arcraft instead of on the flight deck. Access to the electronics bay from within the aircraft is via a hatch in the cabin floor adjacent to the front left door of the aircraft"

http://www.aaib.gov.uk/cms_resources.cfm?file=/Boeing%20777-...

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