evapilotaz
En-Route
- Joined
- Feb 13, 2012
- Messages
- 2,623
- Location
- Gilbert AZ. VFR All Year Baby
- Display Name
Display name:
Drone airspace abuser
Is it common the low voltage alarm light to be lit up when at 1000RPM's?
Once slightly above 1000RPM it turns off.
The amp meter still showed the alternator was still working but I do not recall the amps it was putting out at the time. I wanted to see if the light would turn off during run-up. So the typical run-up is advance throttle to 2000 RPM and check Oil Pressure/Temp, pull Carb heat and look for slight RPM drop, the normal stuff. When I did this the Low voltage light turn off, Next the Mag check at 1700Rpm check and the Low voltage Light remained off. Once I backed down to 1000RPM it was on.
So I got clearance for take off and advance the throttle to full. During ground run I looked at the voltage light it was off, Checked oil pressure/Temp all the normal checks during ground roll. Everything looked good So I rotated at rotation speed. Low voltage light was off during the remainder of the flight.
During the flight I was thinking how would I handle if I lost all electrical. So I was going over emergency procedures in my head.
Anyway is this normal behavior for the low voltage light to do this?
Its a C172N and I have 10 hours in this particular airplane and I do not recall it doing this before.
Thanks of advance.
Once slightly above 1000RPM it turns off.
The amp meter still showed the alternator was still working but I do not recall the amps it was putting out at the time. I wanted to see if the light would turn off during run-up. So the typical run-up is advance throttle to 2000 RPM and check Oil Pressure/Temp, pull Carb heat and look for slight RPM drop, the normal stuff. When I did this the Low voltage light turn off, Next the Mag check at 1700Rpm check and the Low voltage Light remained off. Once I backed down to 1000RPM it was on.
So I got clearance for take off and advance the throttle to full. During ground run I looked at the voltage light it was off, Checked oil pressure/Temp all the normal checks during ground roll. Everything looked good So I rotated at rotation speed. Low voltage light was off during the remainder of the flight.
During the flight I was thinking how would I handle if I lost all electrical. So I was going over emergency procedures in my head.
Anyway is this normal behavior for the low voltage light to do this?
Its a C172N and I have 10 hours in this particular airplane and I do not recall it doing this before.
Thanks of advance.