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Author Topic: Flap Operation Video  (Read 367 times)


  • Join date: May 2009
  • Posts: 830
Flap Operation Video
« on: Tue, 7 Jun 2022 23:03 »
Some nice footage of the mechanics involved in flap operation.


Best regards,



  • Join date: Dec 2009
  • Location: Boise, Idaho USA
  • Posts: 50
Re: Flap Operation Video
« Reply #1 on: Tue, 7 Jun 2022 23:43 »
That video makes me appreciate how much programming Hardy did for PSX!

Jeroen Hoppenbrouwers

  • Moderator
  • Join date: May 2009
  • Location: KTMB
  • Posts: 4457
  • Hoppie designs avionics equipment for airliners.
    • http://www.hoppie.nl/
Re: Flap Operation Video
« Reply #2 on: Wed, 8 Jun 2022 00:24 »
It's interesting that I can see that the aircraft installation people provided my SATCOM unit with a "Flaps Out Of Up" signal that actually isn't. I need that signal to be able to silence the "incoming voice call" chime during critical phases of flight -- takeoff and landing.

On most aircraft, on approach I see flaps out of up, then touchdown, then during taxi flaps up. Not on the 747. I see: flaps out of up, touchdown, flaps up, flaps out of up, flaps up. That's the thrust reversers retracting some of the leading edge flaps! Hence I got some in between signal, probably easier to get at, but not necessarily what I want...


John H Watson

  • Join date: May 2010
  • Location: On a pedestal
  • Posts: 2222
Re: Flap Operation Video
« Reply #3 on: Wed, 8 Jun 2022 08:03 »
Did you notice he said that the flaps will not extend if the speed is greater than the flap placard limit?

He made an obvious mistake about the location of TE flap motors. The inboard and outboard flap motors are in different wheel wells.