9ja4dLord said:1. Although a permanent resident is required to have a PR card when he/she returns to Canada, his/her failure to do so will not constitute an offence under Canadian immigration laws.
2. Transportation companies (Airlines, buses, train) are required to ensure that a person travelling to Canada has the appropriate documentation for that entry. If they don't, the carrier will deny them boarding since our Federal government can hold them responsible for transporting someone who may be denied entry to Canada.
What can you do?
Option 1: you can go to the Canadian High Commission (Abuja) or Canadian Deputy High Commission (4 Anifowoshe Street, VI, Lagos) to request for a travel document that you can use to enter Canada.
Option 2: if you have a valid visa into US, you can fly into US and enter Canada via a land border (in a private or rented vehicle). You will need to show evidence of landing records.
To see more you can check http://www.cic.gc.ca/english/helpcentre/answer.asp?q=064&t=10
Nanonye - you can check the link for an official response. By the way, I think say you don land ni o.
Nice tips!