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humming noise at low power descent
Posted:
Wed Oct 05, 2005 2:42 pmby Timbo2015
When descending ( I mainly have noticed this on approaches to land) if I set the power to a very low setting, nearly all the way down to reduce speed, a low volume, humming kind of monotone comes on. It will go on and off as I decrease/increase power about a certain throttle setting. I have noticed this on the Mooney, as well as the 747 and 777. I think it only occurs at relatively low airspeed. What is this supposed to represent?
Re: humming noise at low power descent
Posted:
Wed Oct 05, 2005 2:47 pmby alrot
same thing
Re: humming noise at low power descent
Posted:
Wed Oct 05, 2005 7:51 pmby MadDriver
Isn't that a gear warning sound?
Re: humming noise at low power descent
Posted:
Thu Oct 06, 2005 2:28 amby Wingo
Definately sounds like a gear warning. Check to see if your gears are extended, you'll find they probably aren't. The same happens when you extend flaps past a certain setting
Re: humming noise at low power descent
Posted:
Thu Oct 06, 2005 9:51 amby Timbo2015
I have no idea what the first reply means. The noise comes out of the computer speakers, not the joystick.
Gear warning sounds like a logical answer. Next time I get this, I will extend/retract gear and see if that turns it on and off. Thanks for your replies.
Re: humming noise at low power descent
Posted:
Fri Oct 07, 2005 8:54 amby Timbo2015
That was it. No noise with gear down. Noise with gear up.