Big Q for the Prop Experts? [Archive]

April 1st 08, 05:38 AM

Take a look at these photos let me know what you think? Note only 43
hours on bird found when diagnosing the CHT probe failure. MT Prop On
SMA diesel.

http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078.jpg

http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079.jpg

[email protected]

April 1st 08, 07:00 AM

On Mar 31, 9:38 pm, wrote:
> Take a look at these photos let me know what you think? Note only 43
> hours on bird found when diagnosing the CHT probe failure. MT Prop On
> SMA diesel.
>
> http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078.jpg
>
> http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079.jpg

Sorry all should have said prop spacer.

Mike Isaksen

April 1st 08, 11:59 AM

> wrote ...
> Take a look at these photos let me know what you think? Note only 43
> hours on bird found when diagnosing the CHT probe failure. MT Prop On
> SMA diesel.
>
> http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078.jpg
>
> http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079.jpg

What's your issue? The only thing that jumps at me is the cowling rub on the
prop hub extender. Could be the cowling or the engine mount is shifting in
flight at different rates. I would go back to the airframe
engineer/designer.

[email protected]

April 1st 08, 05:02 PM

On Apr 1, 3:59 am, "Mike Isaksen" > wrote:
> > wrote ...
>
> > Take a look at these photos let me know what you think? Note only 43
> > hours on bird found when diagnosing the CHT probe failure. MT Prop On
> > SMA diesel.
>
> >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078.jpg
>
> >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079.jpg
>
> What's your issue? The only thing that jumps at me is the cowling rub on the
> prop hub extender. Could be the cowling or the engine mount is shifting in
> flight at different rates. I would go back to the airframe
> engineer/designer.

The Gouges in the prop hub are deep!

Interesting that they say "Damage" is not a problem?

From SMA,

I confirm that this damage is probably due to a contact with the lower
cowling (there should be a mark on the cowling).
The cowlings have a tendency to drift upwards during flight and come
into contact with the propeller hub because of soft shock mounts.
We are currently certifying new shock mounts that will be less
flexible and less sensitive to aerodynamic efforts submitted to the
cowlings.
As specified by MTPropeller, the damage is not a problem.
Best regards,

Cyrille DEAU
SMA (Société de Motorisations Aéronautiques)
SAFRAN GROUP
Customer Services
Tél. +33 (0)2 48 48 05 31
Fax +33 (0)2 48 50 01 41
SMA Bourges- Aéroport
10-12 rue Didier Daurat
F- 18000 BOURGES

[email protected]

April 2nd 08, 05:42 PM

On Apr 1, 9:02 am, wrote:
> On Apr 1, 3:59 am, "Mike Isaksen" > wrote:
>
> > > wrote ...
>
> > > Take a look at these photos let me know what you think? Note only 43
> > > hours on bird found when diagnosing the CHT probe failure. MT Prop On
> > > SMA diesel.
>
> > >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078.jpg
>
> > >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079.jpg
>
> > What's your issue? The only thing that jumps at me is the cowling rub on the
> > prop hub extender. Could be the cowling or the engine mount is shifting in
> > flight at different rates. I would go back to the airframe
> > engineer/designer.
>
> The Gouges in the prop hub are deep!
>
> Interesting that they say "Damage" is not a problem?
>
> From SMA,
>
> I confirm that this damage is probably due to a contact with the lower
> cowling (there should be a mark on the cowling).
> The cowlings have a tendency to drift upwards during flight and come
> into contact with the propeller hub because of soft shock mounts.
> We are currently certifying new shock mounts that will be less
> flexible and less sensitive to aerodynamic efforts submitted to the
> cowlings.
> As specified by MTPropeller, the damage is not a problem.
> Best regards,
>
> Cyrille DEAU
> SMA (Société de Motorisations Aéronautiques)
> SAFRAN GROUP
> Customer Services
> Tél.+33 (0)2 48 48 05 31
> Fax +33 (0)2 48 50 01 41
> SMA Bourges- Aéroport
> 10-12 rue Didier Daurat
> F- 18000 BOURGES

Better Photo of prop Hub damage..

[email protected]

April 2nd 08, 05:42 PM

On Apr 1, 9:02 am, wrote:
> On Apr 1, 3:59 am, "Mike Isaksen" > wrote:
>
> > > wrote ...
>
> > > Take a look at these photos let me know what you think? Note only 43
> > > hours on bird found when diagnosing the CHT probe failure. MT Prop On
> > > SMA diesel.
>
> > >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078.jpg
>
> > >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079.jpg
>
> > What's your issue? The only thing that jumps at me is the cowling rub on the
> > prop hub extender. Could be the cowling or the engine mount is shifting in
> > flight at different rates. I would go back to the airframe
> > engineer/designer.
>
> The Gouges in the prop hub are deep!
>
> Interesting that they say "Damage" is not a problem?
>
> From SMA,
>
> I confirm that this damage is probably due to a contact with the lower
> cowling (there should be a mark on the cowling).
> The cowlings have a tendency to drift upwards during flight and come
> into contact with the propeller hub because of soft shock mounts.
> We are currently certifying new shock mounts that will be less
> flexible and less sensitive to aerodynamic efforts submitted to the
> cowlings.
> As specified by MTPropeller, the damage is not a problem.
> Best regards,
>
> Cyrille DEAU
> SMA (Société de Motorisations Aéronautiques)
> SAFRAN GROUP
> Customer Services
> Tél.+33 (0)2 48 48 05 31
> Fax +33 (0)2 48 50 01 41
> SMA Bourges- Aéroport
> 10-12 rue Didier Daurat
> F- 18000 BOURGES

Better Photo Of Prop Hub Damage.

http://www.internationalferryflights.com/Africa_182_Diesel/Folder%202/prop%20hub%202.jpg

The Visitor

April 3rd 08, 05:11 PM

Have you ever said "no" to certain aircraft?

John

wrote:

> Take a look at these photos let me know what you think? Note only 43
> hours on bird found when diagnosing the CHT probe failure. MT Prop On
> SMA diesel.
>
> http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078.jpg
>
> http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079.jpg

[email protected]

April 3rd 08, 05:46 PM

On Apr 3, 9:11 am, The Visitor >
wrote:
> Have you ever said "no" to certain aircraft?
>
> John
>
> wrote:
> > Take a look at these photos let me know what you think? Note only 43
> > hours on bird found when diagnosing the CHT probe failure. MT Prop On
> > SMA diesel.
>
> >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078.jpg
>
> >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079.jpg

You Bet... I do

[email protected]

April 4th 08, 12:58 AM

On Apr 2, 10:42*am, wrote:
> On Apr 1, 9:02 am, wrote:
>
>
>
>
>
> > On Apr 1, 3:59 am, "Mike Isaksen" > wrote:
>
> > > > wrote ...
>
> > > > Take a look at these photos let me know what you think? Note only 43
> > > > hours on bird found when diagnosing the CHT probe failure. MT Prop On
> > > > SMA diesel.
>
> > > >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078.jpg
>
> > > >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079.jpg
>
> > > What's your issue? The only thing that jumps at me is the cowling rub on the
> > > prop hub extender. Could be the cowling or the engine mount is shifting in
> > > flight at different rates. I would go back to the airframe
> > > engineer/designer.
>
> > The Gouges in the prop hub are deep!
>
> > Interesting that they say "Damage" is not a problem?
>
> > From SMA,
>
> > I confirm that this damage is probably due to a contact with the lower
> > cowling (there should be a mark on the cowling).
> > The cowlings have a tendency to drift upwards during flight and come
> > into contact with the propeller hub because of soft shock mounts.
> > We are currently certifying new shock mounts that will be less
> > flexible and less sensitive to aerodynamic efforts submitted to the
> > cowlings.
> > As specified by MTPropeller, the damage is not a problem.
> > Best regards,
>
> > Cyrille DEAU
> > SMA (Société de Motorisations Aéronautiques)
> > SAFRAN GROUP
> > Customer Services
> > Tél.+33 (0)2 48 48 05 31
> > Fax +33 (0)2 48 50 01 41
> > SMA Bourges- Aéroport
> > 10-12 rue Didier Daurat
> > F- 18000 BOURGES
>
> Better Photo Of Prop Hub Damage.
>
> http://www.internationalferryflights.com/Africa_182_Diesel/Folder%202...- Hide quoted text -
>
> - Show quoted text -

Thats just downright scary. !!!!!!!!!!!!!!!!!!!!!!!

Ben

[email protected]

April 4th 08, 03:40 AM

On Apr 3, 4:58 pm, " > wrote:
> On Apr 2, 10:42 am, wrote:
>
>
>
> > On Apr 1, 9:02 am, wrote:
>
> > > On Apr 1, 3:59 am, "Mike Isaksen" > wrote:
>
> > > > > wrote ...
>
> > > > > Take a look at these photos let me know what you think? Note only 43
> > > > > hours on bird found when diagnosing the CHT probe failure. MT Prop On
> > > > > SMA diesel.
>
> > > > >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0078..jpg
>
> > > > >http://www.internationalferryflights.com/Africa_182_Diesel/PIC-0079..jpg
>
> > > > What's your issue? The only thing that jumps at me is the cowling rub on the
> > > > prop hub extender. Could be the cowling or the engine mount is shifting in
> > > > flight at different rates. I would go back to the airframe
> > > > engineer/designer.
>
> > > The Gouges in the prop hub are deep!
>
> > > Interesting that they say "Damage" is not a problem?
>
> > > From SMA,
>
> > > I confirm that this damage is probably due to a contact with the lower
> > > cowling (there should be a mark on the cowling).
> > > The cowlings have a tendency to drift upwards during flight and come
> > > into contact with the propeller hub because of soft shock mounts.
> > > We are currently certifying new shock mounts that will be less
> > > flexible and less sensitive to aerodynamic efforts submitted to the
> > > cowlings.
> > > As specified by MTPropeller, the damage is not a problem.
> > > Best regards,
>
> > > Cyrille DEAU
> > > SMA (Société de Motorisations Aéronautiques)
> > > SAFRAN GROUP
> > > Customer Services
> > > Tél.+33 (0)2 48 48 05 31
> > > Fax +33 (0)2 48 50 01 41
> > > SMA Bourges- Aéroport
> > > 10-12 rue Didier Daurat
> > > F- 18000 BOURGES
>
> > Better Photo Of Prop Hub Damage.
>
> >http://www.internationalferryflights.com/Africa_182_Diesel/Folder%202...Hide quoted text -
>
> > - Show quoted text -
>
> Thats just downright scary. !!!!!!!!!!!!!!!!!!!!!!!
>
> Ben

Ok, found out prop was on another airplane where damage was done then
prop was placed on this airplane. No inspection was noted in log books
of damage etc for return to service.