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davist(at)xsinet.co.za
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 Posted: Mon Dec 04, 2006 1:09 am Post subject: Tail lifting during full power static test |
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Meant to reply to this thread sooner but this advice should never be
forgotten!!!
I have a -6 with 160 HP fixed pitch and learnt the hard way!
During run up to 2000rpm, stick right back, a gust of wind fron the side
removed the prop wash and any down force I might have had to keep my tail on
the ground and -you guessed it - KABOOM. I had my hand on the throttle and
chopped the engine immediately but over she went!! New prop, engine strip
and all that.
To say that one can lift the tail etc.....If the a/c is not tied down be
very wary about taking power with the brakes on - same thing never apply
brakes with power on - especially that time when you are doing a power check
and you didn't have enough pressure on the pedals and stomp on the brakes
when you notice the a/c creeping forward!! watch out, that little bit of
inertia might just be enough to tip you over. Many Airliners can reverse be
means of utilising reverse thrust but this practise is banned by most
companies and if permitted, bold letters to not use brakes!
---
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jsflyrv(at)verizon.net
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| Posted: Mon Dec 04, 2006 5:30 am Post subject: Tail lifting during full power static test |
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Probably good advice to anyone that is not comfortable doing it. As I
said in my disclaimer I do not recommend anyone try
lifting the tail at all. but it just so happens I feel very comfortable
doing it. You must have had a very strong wind blowing
to blow the"prop wash away". Normally when doing run ups in strong winds
it is best to try to have the nose pointed into
the wind. I have been doing 2000 rpm run ups for years and have never
had the tail try to lift unintentionally or unexpectedly
with full up elevator. Once again, do not try this.
Trevor wrote:
[quote]
Meant to reply to this thread sooner but this advice should never be
forgotten!!!
I have a -6 with 160 HP fixed pitch and learnt the hard way!
During run up to 2000rpm, stick right back, a gust of wind fron the
side removed the prop wash and any down force I might have had to keep
my tail on the ground and -you guessed it - KABOOM. I had my hand on
the throttle and chopped the engine immediately but over she went!!
New prop, engine strip and all that.
To say that one can lift the tail etc.....If the a/c is not tied down
be very wary about taking power with the brakes on - same thing never
apply brakes with power on - especially that time when you are doing a
power check and you didn't have enough pressure on the pedals and
stomp on the brakes when you notice the a/c creeping forward!! watch
out, that little bit of inertia might just be enough to tip you over.
Many Airliners can reverse be means of utilising reverse thrust but
this practise is banned by most companies and if permitted, bold
letters to not use brakes!
---
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
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