I recently saw a Bombardier Global 6000 at my local airport. I was just wondering what the use of this circled remove before flight cover on the nose of the Bombardier Global 6000 is. I never saw such covers before on a aircraft. What is the cover covering and why are the 3 ones connected with a wire?

![Picture of a Bombardier Global 6000

(Own work)

  • $\begingroup$ I hope you don't mind, I shamelessly lifted your photo for another question. $\endgroup$ – TomMcW Nov 23 '16 at 19:30
  • $\begingroup$ No problem if you mention the source. $\endgroup$ – Pascal Ackermann Nov 23 '16 at 19:35
  • $\begingroup$ I did. Nice photo BTW $\endgroup$ – TomMcW Nov 23 '16 at 19:36
  • $\begingroup$ Here is the jetphotos.net url: jetphotos.net/photo/8417782 $\endgroup$ – Pascal Ackermann Nov 23 '16 at 19:38
  • $\begingroup$ yes I would like this too $\endgroup$ – Pascal Ackermann Nov 24 '16 at 7:49

These covers are used to keep foreign objects away and out of the air data sensors, pitot tubes, static ports and Angle of Attack sensors (large red covers) while the aircraft is resting on the ground. Blockage or damage to these sensors by foreign objects prevents the aircraft flight control computers and instruments from collecting accurate data and could be disastrous in flight, especially in instrument conditions. The wires are essentially a leash to hold the neoprene covers together in a group and both prevent their loss during storage and ensure that all covers are removed from the sensors during pre-flight.

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    $\begingroup$ Those are heated AOA sensors $\endgroup$ – Carlo Felicione Nov 23 '16 at 20:11
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    $\begingroup$ And they are covered like this, that nobody can move them? $\endgroup$ – Pascal Ackermann Nov 23 '16 at 20:13
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    $\begingroup$ No just to preven them from being bumped into or damaged during ground towing, hangaring, etc. $\endgroup$ – Carlo Felicione Nov 23 '16 at 20:19
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    $\begingroup$ @PascalAckermann To learn what can happen if you don't cover these, see Birgenair Flight 301. $\endgroup$ – Michael Hampton Nov 24 '16 at 22:48
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    $\begingroup$ Better yet, XL Airways flight 888T $\endgroup$ – TomMcW Nov 27 '16 at 18:06

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