I felt I was lucky to pass my CPL exam years ago - haven't opened a book since, hydraulic levers, cables and throttles that make noise are MY passion .....I know, me bad

Regardless, here are three answers rec'd - further opinion is welcome. With SE turbines getting bigger all the time, where and when does ATPL requirement kick in?
Thanks & be safe up there

PS: I’ll let the authors of the replies come forward if they so choose, and Thank you to them for taking the time to help clear it up.
Hi Paciflyer,
According to TC, a "large" aircraft is defined as one weighing more than 12,566 lbs (5700kg). This is found in the "interpretations" section of the CARs (ie CAR 101).
As a newly minted CPL, you cannot act as an FO or PIC on a large a/c. In order to act as a crew member on a large a/c, you need to write your IATRA (for FO) or have your ATPL (for PIC).
I'm not sure exactly how an air tractor would fit in, since I don't believe these are operated in a two crew environment (i.e. if you're going to fly an airplane that requires an FO, then you need the IATRA or ATPL).
There are several people on the forum who have done air tractor work. I would recommend making a post in the one of the forums to get a confirmation.
Anyways, sorry I couldn’t help any more. Good luck though
_____________________________________________________________
Hi there!
Very simply, CAR 421.40 (1) (a) answers your question re: the Air Tractor. "All aeroplanes with a minimum flight crew requirement of one pilot excluding high performance;"
On this chart http://www.tc.gc.ca/CivilAviation/Regse ... t42102.htm (which took me a while to find, it's hiding at the end of the standards section there!) it shows that the Air Tractor is non-high performance and min. crew is one pilot - hence, Farmer Joe could go get his PPL, buy an Air Tractor, and immediately take it for a spin, as his license covers "all single engine non high performance airplanes."
If you look at the "Individual Type Ratings" section a little below 421.40, you'll see a list of when it is required to have a type rating, and a little below that it goes into when you need to have an ATP or IATRA written to get said type rating (basically only 2 crew or high perf. aircraft).
I think the weight thing really only has to do with the actual aircraft certification - if over 12,5 then two crew is needed - hence the fact that a Shorts Skyvan can be flown at Max Gross (over 12,5 -don't know exactly what) and must have 2 crew, or loaded lighter and flown under 12,5 just single pilot.
Some more examples to clear things up a bit, although 421.40 and below should help - From the regs I can interpret that if 2 private pilots (or CPL) bought a Citation I (2 crew, non high performance)all they would need to do is write the IATRA, do ground and flight training on the aircraft, have 250 h TT, and do a PPC, and they'd be good to go. If one PPL (or CPL) went out and bought a Hurricane (1 crew, high performance) he would only have to do ground and flight training, have 200h TT, and pass a flight test (PPC -like.) This last paragraph is just my interpretation of what I read the rules to be - don't take it for law, but I'm pretty sure I'm correct.
Hope that makes sense.
Cheers!
_____________________________________________________________
Hey Paciflyer, Just trying to rack my brain with your question. Im not sure that im the guy to answer it but I love the challenge. Ill see what I can dig up! I know how frustrating the CARS can be to figure something out.
Perhaps the best thing to do is throw it out on the forums for discussion, I find there are some excellent posters on here that will spend hours seeking the answer for you if they don’t know it!! Give er a try and we'll see with what the Avcanada crew can come up with.
Cheers