As of Thursday July 19, the Buttonville control tower is operating between 0800 and 2000 local time (EDT/EST).  This is a reduction from the previous hours (0800 – 2300).  While the tower is closed, the airspace is MF uncontrolled.

The ARCAL system is now operational on 124.8 — 5 clicks to engage, 3 clicks to disengage.  The timer is 30 minutes, and at this time only the maximum lighting intensity is available.

Update:

The ARCAL at the airport has been adjusted to give you 2 different intensities. 

Now 3 clicks on the microphone will activate the medium lighting for both runways. 

Now 7 clicks will activate the high intensity lighting for both Runways.

The original 5 clicks will no longer work.

The lights will then time out after 30 minutes.

As a refresher, please review the Transport Canada one-page pdfs on uncontrolled airspace operations:

VFR Circuit Procedures at Uncontrolled Aerodromes

IFR Procedures at Uncontrolled Aerodromes

VFR Communications Procedures at Uncontrolled Aerodromes With MF and ATF Areas