Aug 27 (Reuters) - Air Canada ( ACDVF ) said it would

offer flexible rebooking of tickets to its flyers, owing to

uncertainty associated with a possible pilots strike at the end

of a 21-day cooling off period that begins on Tuesday.

Flexible rebooking would be offered to customers with

flights scheduled for period immediately preceding and after the

end of the cooling off period on Sept. 17.

This comes after the end of federal conciliation in contract

negotiations with the Air Line Pilots Association (ALPA), which

represents more than 5,000 pilots at Canada's largest carrier.

Last week, the pilots voted to authorize a strike, with 98%

voting members in favour.