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Saudia 777-200ER Takeoff Video Question  
User currently offlineViscount724 From Switzerland, joined Oct 2006, 26504 posts, RR: 22
Posted (1 year 4 months 4 weeks 1 day 2 hours ago) and read 3295 times:

The following video (from a Civil Aviation thread) shows SV's inaugural 777-200ER from JED landing and taking off at Toronto on Monday.

The takeoff segment starts at 45 seconds. At about the 1:06 or 1:07 mark, about 10 seconds after liftoff, there's what looks like a small puff of smoke. At first I thought it was from the engines (both engines simultaneously), but on looking at it again it might be inboard of the engines.

Just curious what that might be.

5 replies: All unread, jump to last
User currently offlineAirForceOne From Canada, joined Aug 2006, 61 posts, RR: 0
Reply 1, posted (1 year 4 months 4 weeks 1 day 2 hours ago) and read 3284 times:

Looks like brake dust from the landing gear. I believe its just buildup from using lots of brake on the taxi in or taxi out. And when the gear got tilted most of the dust falls out.

[Edited 2013-10-29 19:20:15]

User currently offlineCCA From Hong Kong, joined Oct 2002, 872 posts, RR: 14
Reply 2, posted (1 year 4 months 4 weeks 20 hours ago) and read 3116 times:

Yep it's brake dust, occurs when the wheels are stopped by the automatic brake (not to be confused with auto brake) as a result of selecting the gear up.

[Edited 2013-10-30 01:07:20]

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User currently offlineflightsimboy From Canada, joined Sep 2005, 1364 posts, RR: 4
Reply 3, posted (1 year 4 months 4 weeks 13 hours ago) and read 2965 times:

Definitely brake dust...  

User currently offlineapfpilot From United States of America, joined Jun 2013, 294 posts, RR: 0
Reply 4, posted (1 year 4 months 4 weeks 12 hours ago) and read 2943 times:

In some aircraft when the gear is selected up and is retracting the brakes are applied momentarily to stop the wheels from spinning which is what you are seeing here. On other aircraft like the 737 there are rub strips in the gear well that accomplish the same thing.

Opinions are my own and do not reflect an endorsement or position of my employer.
User currently offlineJAGflyer From Canada, joined Aug 2004, 3648 posts, RR: 3
Reply 5, posted (1 year 4 months 4 weeks 12 hours ago) and read 2935 times:

Quoting apfpilot (Reply 4):

The 737 has rubstrips in the nose gear bay (look straight up inside and you'll see them). The main gear have automatic brakes prior to retraction.

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