Conversion from PA28 to Cessna 152

[A and C]

Timgriff6

I think he is saying that the stall warning is not electric.

Not having seen a 172 recently I can only remember the stall warning system on the 150/152, this uses a slot in the leading edge of the wing that is connected to a horn in the cockpit, the reduction in air pressure at the leading edge due to the movement of the stagnation point as a result of increasing angle of attack activates the horn.

This system can be checked on the ground by placing your lips on the slot in the wing and sucking, I did at one time demonstrate this to students but have stopped the practice having seen a wasp exit the stall warning slot only seconds before I was about to demonstrate the system !

[The500man]

This system can be checked on the ground by placing your lips on the slot in the wing and sucking

You must really like your 150/152!

[Mach Jump]

Not having seen a 172 recently I can only remember the stall warning system on the 150/152, this uses a slot in the leading edge of the wing that is connected to a horn in the cockpit, the reduction in air pressure at the leading edge due to the movement of the stagnation point as a result of increasing angle of attack activates the horn.

This system can be checked on the ground by placing your lips on the slot in the wing and sucking...

I believe I recall some of the very early C172s having electric stall warning systems, but the vast majority are exactly as A and C suggests.


MJ

[worrab]

having seen a wasp exit the stall warning slot

(Of course you can always suck through your clean hankie)

[Exiled Martian]

While on the topic of flaps, older models with 40 degree barn-door flaps will let you stop-and-drop the airplane. Fantastic stuff. Just don't try to climb like that.

This was by far the coolest aspect of the 172 checkout. we were at 1200 (on QFE) feet on a very tight left base approach & he springs a glide approach to land scenario on me to end processions! As taught I get to trimming & banking keeping an oval shaped turn towards the tarmac. Get onto short finals (1/4 of a mile from runway threshold) & we are at about ~1000ft roughly, I commence with the flaps 40 input, simultaneously voicing my concerns to him about our attitude, i.e. being too high & that I doubt we would make the runway appropriately, also asked him if I was ok to use some side slip to get us down? he looked at me with a smirk & goes no need son, naturally the ASI decays at a drastic rate once the barn doors take full effect. He then tells me to pitch for 65 & keep that nose pointed at the tarmac. A solemn gulp escaped me as the attitude we were in was very as were literally coming down vertically in a steep nose dive style approach whilst holding ~65-70 knots.

I could not believe how fast (& safely) we were plummeting towards the ground & in close proximity to the runway numbers. During the dive he told me to get ready to catch the plane & level out on his hear say! Awaited his command & executed the catch & flare to perfection... even got a round applause via the RT from the AFISO as I taxied away retracting those marvelous flaps in the process