NTSB Accidents & Incidents

Ron Wanttaja wrote:

A 7AC Champ doesn't have any stall warning device.

Its Type Certificate pre-dates the period when stall warning devices were
required.

Incorrect!

The phrase from CAR 3 under which it was certified is almost identical
to today's passage in Part 23:

3.120(f) A clear and distinctive stall warning shall precede the
stalling of the airplane, with the flaps and landing gear in any
position, both in straight and turning flight.

23.207(a) There must be a clear and distinctive stall warning, with the
flaps and landing gear in any normal position, in straight and turning
flight.

The only difference is 23.207 goes on to say that it can either be
accomplished via aerodynamic qualities or a by a device. A visual
indicator by itself, by the way, doesn't qualify.

On Wed, 22 Aug 2007 07:36:51 -0400, Ron Natalie
wrote in :

A visual indicator by itself, by the way, doesn't qualify.

Where does it say that?

The PA28-235 is equipped with only a red panel light.

Larry Dighera wrote

On Wed, 22 Aug 2007 07:36:51 -0400, Ron Natalie
wrote in :

A visual indicator by itself, by the way, doesn't qualify.

Where does it say that?

The PA28-235 is equipped with only a red panel light.

(b) The stall warning may be furnished either through the inherent
aerodynamic qualities of the airplane or by a device that will give clearly
distinguishable indications under expected conditions of flight. However, a
visual stall warning device that requires the attention of the crew within
the cockpit is not acceptable by itself.

Bob Moore

On 22 Aug 2007 12:56:36 GMT, Bob Moore
wrote in 28:

Larry Dighera wrote

On Wed, 22 Aug 2007 07:36:51 -0400, Ron Natalie
wrote in :

A visual indicator by itself, by the way, doesn't qualify.

Where does it say that?

The PA28-235 is equipped with only a red panel light.

(b) The stall warning may be furnished either through the inherent
aerodynamic qualities of the airplane or by a device that will give clearly
distinguishable indications under expected conditions of flight. However, a
visual stall warning device that requires the attention of the crew within
the cockpit is not acceptable by itself.

Bob Moore

There seems to be a bit of ambiguity in that quote: "a
visual stall warning device that requires the attention of the crew
within the cockpit is not acceptable by itself."

The stall warning light mounted in the center of the left hand panel
in the PA28-235 doesn't require the crew's attention; it gets it. So
I guess it's approved.

On Wed, 22 Aug 2007 14:27:52 GMT, Larry Dighera
wrote:


There seems to be a bit of ambiguity in that quote: "a
visual stall warning device that requires the attention of the crew
within the cockpit is not acceptable by itself."

The stall warning light mounted in the center of the left hand panel
in the PA28-235 doesn't require the crew's attention; it gets it. So
I guess it's approved.

Probably the light in association with airframe buffet is what gets it
approved.

Larry Dighera wrote
The stall warning light mounted in the center of the left hand panel
in the PA28-235 doesn't require the crew's attention; it gets it. So
I guess it's approved.

There's a good chance that in the case of the PA28-235 that the light
is not required at all due to natural stall warning and Piper just
put the light there just for good measure.

Bob Moore

On 22 Aug 2007 18:10:28 GMT, Bob Moore
wrote in 28:

Larry Dighera wrote
The stall warning light mounted in the center of the left hand panel
in the PA28-235 doesn't require the crew's attention; it gets it. So
I guess it's approved.

There's a good chance that in the case of the PA28-235 that the light
is not required at all due to natural stall warning and Piper just
put the light there just for good measure.

Bob Moore

My experience is that the PA28 doesn't provide much aerodynamic
warning of a stall. It'll just smoothly mush along for a long time
before the nose finally drops.

("Larry Dighera" wrote)
My experience is that the PA28 doesn't provide much aerodynamic warning of
a stall. It'll just smoothly mush along for a long time before the nose
finally drops.


I counted two.


Paul-Mont

On Wed, 22 Aug 2007 16:33:10 -0500, "Montblack"
wrote in
:

("Larry Dighera" wrote)
My experience is that the PA28 doesn't provide much aerodynamic warning of
a stall. It'll just smoothly mush along for a long time before the nose
finally drops.


I counted two.

Two what?

("Larry Dighera" wrote)
My experience is that the PA28 doesn't provide much aerodynamic warning
of a stall. It'll just smoothly mush along for a long time before the
nose finally drops.

I counted two.

Two what?


Two aerodynamic warnings of a stall, in your post.


Paul-Mont