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Final Flaps

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CloudCraft(at)aol.com
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Posted: Sat Jan 21, 2006 12:09 pm Post subject: Final Flaps

In a message dated 20-Jan-06 23:28:20 Pacific Standard Time, 

john(at)vormbaum.com writes:

final, then give the flaps the last 'notch' to "full flaps" on 1/2 mile 

final or so, when the landing is assured, and BAM, suddenly I'm at 100kias,

John,



You've gotten some good pointers already on the sight picture and flap 

operation.  Nice work, guys!



I went to half flaps prior to turning base or about 2 minutes from final 

approach fix and then full flaps prior to  turning final or one dot from 

glideslope intercept.



One of the glorious things about a Commander is that the flaps will always 

come up (unlike electric flaps) so use them knowing you can always reduce if 

needed -- so use more, and earlier than you are now. 



I doubt that you'll need to reduce flap setting unless you go One Engine 

Inoperative.



But something else is going on here.  The Aero Dynamic clean up gave you 6 

KIAS at cruise but the sudden increase in speed prior to touchdown makes me 

wonder about pitot/static changes that may have taken place with all of your 

"clean up" work.



Do you have GPS?  Can you get out on an ISA day with no wind and check GPS 

ground speed vs. indicated?  No wind at PAO is a lot to ask for, but now is the 

time to find a cool, sea level day.



I'd be curious about your IAS at different deck angles in approach 

configuration and full landing configuration and the GPS Ground Speed would help spot 

whether your indicated speeds are way out of whack.



Also, having just been painted, check out your static ports; even your pitot 

tubes if they were removed or had paint applied near them.



One thing I've learned taking 4 Falcons throught RVSM is how critical all 

that stuff is.



Wing Commander Gordon

Godless Heathen / Non-Aircraft Owner / Like this site best



Life is not simple anywhere. Probably less so elsewhere.

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john(at)vormbaum.com
Guest

Posted: Sat Jan 21, 2006 2:47 pm Post subject: Final Flaps

Keith,



Thanks for the suggestions. I'll practice using the flaps earlier & more 

than I am now. I also hadn't considered the possible pitot/static 

implications. I'll definitely have to find a calm ISA day (haha, probably 

not at PAO!) to test these theories out.



In any case, you guys have all given me something to occupy a couple of 

hours of flying time. And you all know how much you have to twist my arm to 

go fly! 



Thanks again to all for the input.



/John

---

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