Kevin Horton
July 6th 03, 06:09 PM
In article >, O-ring Seals
> wrote:
> On 27 Jun 2003 16:58:30 -0700, wrote:
>
> >If they have a fleet flying they have to support it, keep spares in stock,
> >track
> >failures, issue AD's. That costs money.
> >
> >
> FYI, the manufacturer does not issue AD's. This is done by the FAA.
>
> O-ring
But the manufacturer has to do the engineering investigation to figure
out what the AD should say. Then they present the proposed wording to
the FAA to get it blessed, and the FAA releases the AD.
The FAA does not have either the detailed knowledge of the design
required, or the engineering resources to do the investigation. That
can take quite a few man hours of work, as the problem and the fix are
seldom simple. And the number of hours required doesn't change much as
the size of the fleet changes, so a small fleet size means quite a few
dollars of cost per aircraft.
--
Kevin Horton - RV-8
Ottawa, Canada
http://go.phpwebhosting.com/~khorton/rv8/
> wrote:
> On 27 Jun 2003 16:58:30 -0700, wrote:
>
> >If they have a fleet flying they have to support it, keep spares in stock,
> >track
> >failures, issue AD's. That costs money.
> >
> >
> FYI, the manufacturer does not issue AD's. This is done by the FAA.
>
> O-ring
But the manufacturer has to do the engineering investigation to figure
out what the AD should say. Then they present the proposed wording to
the FAA to get it blessed, and the FAA releases the AD.
The FAA does not have either the detailed knowledge of the design
required, or the engineering resources to do the investigation. That
can take quite a few man hours of work, as the problem and the fix are
seldom simple. And the number of hours required doesn't change much as
the size of the fleet changes, so a small fleet size means quite a few
dollars of cost per aircraft.
--
Kevin Horton - RV-8
Ottawa, Canada
http://go.phpwebhosting.com/~khorton/rv8/