On June 26, 1978 an Air Canada DC-9 (CF-TLV) began it's takeoff roll down runway 23L at Toronto International Airport. It's destination was Winnipeg with 102 passengers and 5 crew members on board.
During the takeoff roll, while approaching 140 knots (Vr was 154 knts) an "Unsafe Landing Gear" light illuminated. The Captain decided to abort the takeoff, however, he didn't have enough runway left to stop (braking performance on the 9,500 foot runway was reduced by dampness and excessive rubber on the runway's surface).
The DC-9 continued rolling almost 1000 ft passed the end of the runway and plunged into a 60-foot-deep ravine where it clipped tree tops and broke into 3 pieces upon final impact. Every person on board was injured and 3 were killed.
After months of investigation, it was determined that a tire had lost it's tread. Pieces of rubber damaged the landing gear position switch on the strut (causing the cockpit alarm), and a large chunk of rubber flew into one engine causing it's failure.
The tire only lost it's tread...it didn't burst. At the time, Transport Canada's rules permitted the use of re-treaded tires on passenger aircraft. Airliner tires were allowed to be recapped a maximum of 6 times. The DC-9's tire had already been recapped 5 times.
My question is:
Does your country permit passenger aircraft to use recapped tires? If so, how many times can they be recapped?
It will be interesting to learn what the different rules around the world are regarding the use of recapped tires. Hopefully we'll hear about the current rules on this topic from some countries in North & South America, Europe, Asia, Australia, Africa, etc, etc.
I guess the most widely known accident involving a tire would be the loss of the Concorde outside of Paris.
I wonder if these Dash-8 tires were re-treaded?
Photo © John Fennell