The temptation is suggest doing the homework yourself. After all, the rule requiring PRs to present either a valid PR card or a PR Travel Document when boarding a flight to Canada is NOT obscure or difficult to document. And no advanced studies in international relations is necessary to recognize it is RECKLESS and wrong to suggest that PRs who carry a visa-exempt passport which has previously been approved for eTA have "pretty good chances" to board a flight to Canada without a PR card or a PR Travel Document.Can you provide references or sources on which you based above statements?
Something like web link, and not generic statements like “reports” or “reporting”.
Moreover, to be frank, there is reason to doubt the sincerity of the query, since the rule has been so broadly publicized and there is virtually no doubt about what it requires and that it is generally (with isolated exceptions) enforced, and the rule is otherwise easily found on multiple IRCC web pages. Which others and I have referenced, cited, quoted, and oft times linked in this forum many times over the course of the last two years.
Nonetheless, at the risk of feeding troll bait, I'll humour the query:
There are numerous sources describing the requirement that PRs present a valid PR card or a PR Travel Document to board a flight to Canada. One among many is the basic information page for PRs at the IRCC website (see https://www.canada.ca/en/immigration-refugees-citizenship/services/new-immigrants/pr-card/understand-pr-status.html ):
Permanent residents (PRs) of Canada must carry and present their valid PR card or permanent resident travel document (PRTD) when boarding a flight to Canada, or travelling to Canada on any other commercial carrier. If you do not carry your PR card or PRTD, you may not be able to board your flight, train, bus or boat to Canada.
The rule is simple, straight-forward, and based on relatively easily found statutes and regulations (both easily researched and browsed at the Justice Laws Website; see https://laws-lois.justice.gc.ca/eng/index.html for anyone willing to do a modicum of homework).
If you are asking for sources or links documenting that the rule is actually enforced, no link is necessary, just read this forum, here, including the pages above. In particular, if you doubt the rule is being enforced, here is a small sample of posts (including links to the page displaying the original post) by others emphasizing this is now the rule and that it is generally enforced, with acknowledgement of occasional exceptions (largely consistent with my summary above):
1. Unless you are American, the person you spoke to at the airline gave you very bad advice. It's not a "take a chance and maybe they'll let me board" situation. You will NOT be allowed to board a plane to Canada without a valid PR card or a PRTD. As a PR, CBSA will grant you entry whether you have a PR card or not.
2. As a PR, you can't even apply for an eTA.
No it is not at the discretion of the airline. As a PR you need a PR card or a PRTD. Yes, eTA is not an option but that is intentional.
Believe me and all the others: You have no chance, literally zero chance, to board the plane without either an eTA or a valid PR card or a valid PRTD. You will make it all the way to the gate and when they swipe your passport there will be a large "Do not board" message
ETAs are never asked for by an airline. They are automatically linked to your passport electronically only. So an airline upon scanning your passport, will see immediately from the Canadian system if you have a valid and active eTA or not.
When landing as a PR, eTA are not instantly cancelled, this process can often takes weeks or months. So the only reason you were able to travel back to Canada is that you were incredibly lucky they had not gotten around to cancelling your eTA yet. If they had, you would have been denied boarding.
You won't be able to board a flight originating outside Canada and flying into Canada without a PR card or a PRTD.
Also note that there are many other anecdotal reports in other topics in this forum illustrating the rule actually being applied since the eTA process was fully implemented, with some isolated reports of exceptions (regarding which, as I noted in the post you quote, there are various possible explanations NOT worth revisiting since the rule itself is so clear and is generally applied, with some exceptions). I have not been so lazy that I have not revisited and reviewed these many reports, after reading them the first time, but I am lazy enough to not do the homework of finding them again and linking them for you. Sorry. There are, nonetheless, many such posts in multiple topics in this forum.Once you landed, your eTA technically became invalid. This means that in order to board a plane with Canada as a destination you will need to have your PR card or a PRTD.
CBSA will let you in at the border, but the chances are very high that the airline will refuse to take you there.
There's a chance that your eTA hasn't been cancelled, but it's a big (and potentially expensive) risk for you to take. I would consider that without the PR Card or PRTD you will not be allowed to fly to Canada.