Today's Message Index:
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1. 02:51 PM - Prop strike - by a hangar door (Ralph E. Capen)
2. 06:00 PM - Re: Prop strike - by a hangar door (FLYaDIVE)
Message 1
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| Subject: | Prop strike - by a hangar door |
Here's my scenario:
We had a tornado at my local airport - looks like the sliding hangar door
was pushed in to the prop (MT 3 blade Hydraulic CS) of my plane. It was in
the hangar at the time - not running - just sitting there innocently in its
chocks. The first look -see didn't reveal any obvious damage - closer
inspection made a difference. I can see damage to the spinner and the lower
two blades wobble not so nicely as compared to the rock solid top one.
At a minimum, I'm thinking the prop gets rebuilt.
I'm concerned about impact damage to the front of the engine. What could
have been damaged? Would it be worth my while to have someone put a dial
indicator to the prop flange? What would be your suggestion to determine if
it needs to be torn apart and measured? I haven't tried rotating it through
yet - in case I could make things worse.
Full inspection tomorrow - this was just what came from the first look
through.
Your thoughts please,
Ralph Capen
Message 2
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| Subject: | Re: Prop strike - by a hangar door |
Ralph:
I'm guessing here since I can't see the damage or feel the engine. BUT! I
really doubt if there is any damage to the engine. The prop more than
likely adsorbed all the forces and saved the engine. What you have to do
now is check the T.I.R.
(Total Indicated Runout) of the prop flange. Check it in both
planes Horizontal and Vertical. Then go to the maintenance manual for what
is allowed. I do not remember but I think anything 0.007" and below is
good. You probably do not own a dial indicator so an A&P will have to be
brought in and he should have the equipment as well as know the
information. Make sure he has a manual for your engine & S/N.
Best of luck,
Barry
Kill a pigeon and feed the people.
Kill a deer and feed the people.
Kill a bear and feed the people.
Kill the people and save the earth.
On Fri, Jun 29, 2012 at 5:49 PM, Ralph E. Capen <recapen@earthlink.net>wrot
e:
> Here=92s my scenario:****
>
> ** **
>
> We had a tornado at my local airport ' looks like the sliding hangar do
or
> was pushed in to the prop (MT 3 blade Hydraulic CS) of my plane. It was
in
> the hangar at the time ' not running ' just sitting there innocently
in its
> chocks. The first look 'see didn=92t reveal any obvious damage ' clo
ser
> inspection made a difference. I can see damage to the spinner and the
> lower two blades wobble not so nicely as compared to the rock solid top o
ne.
> ****
>
> ** **
>
> At a minimum, I=92m thinking the prop gets rebuilt.****
>
> ** **
>
> I=92m concerned about impact damage to the front of the engine. What cou
ld
> have been damaged? Would it be worth my while to have someone put a dial
> indicator to the prop flange? What would be your suggestion to determine
> if it needs to be torn apart and measured? I haven=92t tried rotating it
> through yet ' in case I could make things worse.****
>
> ** **
>
> Full inspection tomorrow ' this was just what came from the first look
> through.****
>
> ** **
>
> Your thoughts please,****
>
> Ralph Capen****
>
> *
>
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>
>
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