Aug. 19: Air Transat technicians in Mirabel, Que. uncrate a Rolls-Royce Trent 700 engine, discovering that it is a "premodification" engine designed for an earlier model of jet, and is missing a hydraulic pump.

After informing supervisors the crew is told to proceed with the repairs. Several hours later an Air Transat supervisor signed off on the plane's release into regular service.

Aug 19 - 20: The aircraft is returned to service with a flight from Montreal to Toronto, then on to Athens, Greece.

Aug 20 - 21: The aircraft flies from Athens to Montreal, then after a quick turnaround, departs for Nantes, France.

Aug 21 - 22: The aircraft flies from Nantes to Montreal. Later in the day it is flown from Montreal to Toronto, then back to France. This time the destination is Paris.

Aug 22 - 23: The aircraft flies from Paris to Montreal, then on to Gatwick, England, where it refuels and flies back to Montreal. After a brief flight to Toronto, the Airbus A330 makes the return flight to Gatwick, England, then flies back to Montreal and on to Toronto.

Aug. 24 5:25 a.m.: Flying at 39,000 feet, approximately two-thirds through an overnight Toronto to Lisbon flight, Air Transat Flight 236 Captain Robert Piche notices a fuel imbalance.

5:41 a.m.: Concerned there might be a fuel leak, Piche steers the aircraft towards the closest airport in the Azores, 540 kilometres away.

5:48 a.m.: The crew confirms a fuel leak from the right-wing tank of the aircraft. Piche declares an emergency.

6:13 a.m.: Flying at 39,000 feet, the right engine fails.

6:26 a.m.: Flying at 34,500 feet, the left engine fails. The aircraft is still 137 kilometres from the nearest airstrip. Piche reports that he may have to ditch the plane at sea.

6:34 a.m.: With 13 kilometres to go, the aircraft is flying at at an altitude of 13,000 feet.

6:46 a.m.: Gliding in with no power, Piche makes a "dead-stick" landing on an airstrip in Terceira, one of Portugal's Azores Islands. 10 people suffer minor injuries, but all 303 people on board the aircraft survive.

Aug. 27: At a news conference, Piche tells the media he doesn't consider himself a hero.

Aug. 29: As a result of a joint Canadian-Portuguese investigation, Air Transat orders an employee in its maintenance and engineering division to take time off with pay.

Aug. 29: Rolls-Royce, the engine manufacturer, issues a statement saying the fuel leak appeared to be the result of Air Transat maintenance crews following only part of a service bulletin.

Aug. 31: Air Transat pilots are ordered to take remedial fuel management training.

Aug. 31: The Globe and Mail confirms that Capt. Piche was convicted of drug trafficking in 1983, after landing a Piper Aztec at an airport in Georgia with more than 200 kilograms of marijuana on board. He served time in prison and later received a full pardon.

Sept. 2: Jean Jallet, president of International Association of Machinists and Aerospace Workers Lodge 1751 tells The Globe and Mail that a mechanic recorded a telephone conversation in which he told his supervisor the engine on the aircraft was installed incorrectly.

Sept. 3: Air Transat issues a statement saying it has no record of an employee raising concerns over the safety of the engine.

Sept. 5: A senior Air Transat executive confirmed that a maintenance supervisor with the company ordered "concerned" mechanics to proceed with the engine swap on the Airbus A330-200.