ARFlyer
En-Route
So today, I was flying our Piper Arrow with my CFI student doing some high work. I noticed our airspeed was flipping around during the flight and turned on the Pitot Heat which solved the issue. A while later we proceeded into do some power off 180s. On landing I noticed a Low Voltage Warning and saw the Bus voltage at 12.5v and dropping with the ALT at 35 Amp. My student looked down and saw that the Pitot Heat was still on and flipped it off. This fixed that problem on taxi back. System was holding 35-40 Amps with 13.8v Bus. Well on our next landing a guy pulled out and caused us to go around. When my student threw the gear up the ALT surged to 75 Amps and it took the gear twice as long to come up and lock. Went out did some trouble shooting and threw the gear down and saw no issue. The system stayed at a cozy 40 Amps. The mechanic went up with another CFI and found nothing wrong. They believe me but just couldn't replicate the issue. So the mechanic said it must have been the low power setting and everything known to man turned on. Any of you guys got an idea ?
Aircraft PA-28R-201 Glass Cockpit
ALT: 14v 60 Amp
Bus Avg: 13.8v
ALT Avg: 40 Amp
Aircraft PA-28R-201 Glass Cockpit
ALT: 14v 60 Amp
Bus Avg: 13.8v
ALT Avg: 40 Amp