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Dash 8 MLG Question  
User currently offlineUAL Bagsmasher From United States of America, joined Sep 1999, 2153 posts, RR: 9
Posted (11 years 7 months 3 weeks 6 days 9 hours ago) and read 3492 times:

Took my first ride on a Dash 8 yesterday. Is it normal for the doors on the side of the MLG strut to have a great deal of "play" in them when the gear is extended? They were flapping around pretty badly as if the attachment fittings were worn. Is this normal for these aircraft?

5 replies: All unread, jump to last
User currently offlineEMBQA From United States of America, joined Oct 2003, 9451 posts, RR: 10
Reply 1, posted (11 years 7 months 3 weeks 6 days 8 hours ago) and read 3409 times:

A little... but not a lot. During the C-Checks we have done on Dash-8's almost all of the aircraft have required replacement of the MLG gear door linkage due to wear. It's a big door and takes quite a beating out there.

"It's not the size of the dog in the fight, but the size of the fight in the dog"
User currently offlineUAL Bagsmasher From United States of America, joined Sep 1999, 2153 posts, RR: 9
Reply 2, posted (11 years 7 months 3 weeks 6 days 3 hours ago) and read 3340 times:

Thanks for the quick reply. I had a feeling something wasn't quite right when the doors were just flapping around out there Big grin

User currently offlineLinemechqx From United States of America, joined May 2004, 77 posts, RR: 0
Reply 3, posted (11 years 7 months 3 weeks 5 days 18 hours ago) and read 3307 times:

Originally those fwd doors on the left side of the gear, were hydraulic, like the aft doors are. But this design created a lot of problems and (not sure when) they were redesigned as the mechanical "follow me" doors they are now. Which should give plenty of reason for the play and awkwardness that they have now.


User currently offline320tech From Turks and Caicos Islands, joined May 2004, 491 posts, RR: 5
Reply 4, posted (11 years 7 months 3 weeks 4 days 21 hours ago) and read 3241 times:

The Dash-8-100's that I used to work on still have hydraulically actuated landing gear doors. I'm not aware of any mod to change them. They did move a lot in the breeze, and we often changed the attaching hardware.

The primary function of the design engineer is to make things difficult for the manufacturer and impossible for the AME.
User currently offlineT prop From United States of America, joined Apr 2001, 1044 posts, RR: 1
Reply 5, posted (11 years 7 months 3 weeks 4 days 19 hours ago) and read 3237 times:

I've worked on both, and the later type, with the linkage connected to the drag strut, do end up having more play after a while.

I prefer the later type though because the actuators on the older ones eventualy end up leaking. Then you get to climb up there and play with skydrol...

T prop.

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