Can you check the stall warning system by sucking over it with a handkerchief as a filter? Or do you need something more powerful like a portable vacuum? Thanks.
2006-10-08 09:38:14 · 5 answers · asked by Anonymous in Cars & Transportation ➔ Aircraft
Yes you can suck it with a hankerchief. It used to be required before every flight for Airworthiness Directive AD 68-17-04 until the bug screen was installed.
http://www.tc.gc.ca/aviation/applications/cawis-swimn/awd-lv-cs1401.asp?rand=
We test it in the shop by sucking on it. The Cessna manual doesn't call for a required pressure or calibrated test equipment to do this. Test flying the aircraft is the only way to rig the position of the stall-warning system and to ensure it is functioning, but I have never had one fail in the air that passed on the ground.
2006-10-08 11:51:17 · answer #1 · answered by Anonymous · 1⤊ 1⤋
You can make it beep, yes, but that hardly rates as a check. For a proper check it needs to go to a proper workshop. You can never control or muster by mouth the exact suction to emulate the one generated by a the wing approaching stall speed. It's is a no go. These things need special test bench and equipment. I do not know what is your concern? do your pre-flight checks according to the list and don't worry. Besides, even if the stall warning fails you still have tell-tale signs of an imminent stall, from the feeling of the controls, aircraft behaviour, and the slight buffeting at the control column. These things come with experience.
2006-10-09 04:55:27 · answer #2 · answered by kalizzi 2 · 0⤊ 1⤋
I've never flown a 150 but I used to fly 172s and 210s when I was in high school. Yes, you can suck over it using a handkerchief as a filter. Just open the door on the side where the hole is and you will very easily hear the alarm when you suck on the hole.
2006-10-08 10:48:01 · answer #3 · answered by Kelley S 3 · 1⤊ 1⤋
Like the various previous solutions suggested, the horn will sound 5 to 10 knots in the previous honestly stalling. it rather is taken under consideration necessary bear in suggestions nonetheless, that the plane does no longer stall at a definite airspeed. The plane can stall at ninety knots in case you rather needed it to. rather, that's going to stall whilst the wings exceed a definite perspective of attack, this is around 18 levels for a 172. The horn will sound whilst the little flap gets pushed up rather of down by the relative wind, whilst the perspective of attack is extra or less sixteen levels or so. (That final section is a coarse estimate.)
2016-12-26 12:54:24 · answer #4 · answered by ? 3 · 0⤊ 0⤋
yes, absolutly, It doesn't take that much to make the buzzer go off.
2006-10-08 10:54:42 · answer #5 · answered by coolplane757 1 · 1⤊ 1⤋