It is just after two in the morning over the mid-Atlantic, and the cockpit of an Airbus A330 has gone quiet in the worst possible way. No engine hum. No thrust. Just the thin whistle of air over an airframe weighing more than 180 tonnes, sinking toward a black ocean at roughly 2,000 feet per minute. Behind the flight-deck door, 293 passengers are strapped in beneath dangling oxygen masks. Ahead, somewhere out in the dark, lies a single strip of runway on a volcanic island in the Azores — and no second chances.

This was Air Transat Flight 236 on 24 August 2001: a routine Toronto-to-Lisbon redeye that turned into the longest glide an airliner in distress has ever flown. What follows is not a crash story. It is a survival story — one of the great feats of raw airmanship in the jet age, flown without engines, in the dark, over open water.

Every one of the 306 people on board walked away.

A Leak Nobody Saw Coming

Flight 236 lifted off from Toronto at 00:52 UTC with 46.9 tonnes of fuel aboard — about 4.5 tonnes more than the regulations required. On paper it was a comfortable, well-fed transatlantic crossing. In reality the aircraft was already carrying a hidden flaw, born not in the air but on the hangar floor a week earlier.

On 17 August, C-GITS had received a replacement for its number-two (right) engine. The spare, loaned by Rolls-Royce, came from an earlier configuration, and a hydraulic component did not match cleanly. Despite the lead mechanic raising concerns, an adaptation was authorised that left too little clearance — a gap of only millimetres — between a hydraulic line and a fuel line. In flight, hour after hour, the two lines chafed against each other until the fuel line cracked.

Just under four hours into the crossing, fuel began streaming out of the right engine into the night sky. The crew had no warning light that said “leak.” What they saw instead was a strange pattern of readings: low oil temperature and high oil pressure on engine two. Captain Robert Piché suspected faulty sensors and radioed Air Transat maintenance control in Montreal, which advised the crew to monitor the situation.

The clues were there, scattered across the displays. The fuel-on-board figure was dropping faster than it should. The estimated fuel at destination was falling. The trim-tank transfer ran early. But each reading, taken alone, looked like a glitch rather than a catastrophe — and the human mind tends to reach for the least alarming explanation first.

The definitive reconstruction is the National Geographic Air Crash Investigation episode “Flying on Empty,” which walks through the night minute by minute — from the first odd gauge reading to the wheels-down silence over Terceira.

The Mistake That Drained the Tanks

At 05:36 UTC, a fuel-imbalance warning appeared. The right side was lighter than the left — which made sense, because fuel was pouring out of the right engine. But the crew did not yet know that. Reaching for the imbalance procedure from memory rather than reading the checklist, they opened the cross-feed and began transferring fuel from the left tanks to balance the load.

It was a fatal irony. The fuel they were so carefully moving across was being fed straight to the leak, vanishing overboard at roughly 13 tonnes per hour. Had they paused on the checklist’s caution note — the one warning to rule out a leak before cross-feeding — the night might have ended differently. The Portuguese investigation later identified the crew’s handling of the leak, not the maintenance error alone, as the central cause of the fuel exhaustion.

By 05:45 they had grasped enough to act. Piché turned the A330 toward Lajes Air Base in the Azores and declared a fuel emergency with Santa Maria Oceanic control. The island was still well over 200 nautical miles away. The question now was brutally simple: could they get there before the tanks ran dry?

They could not. At 06:13 UTC, 150 nautical miles out and cruising at 39,000 feet, the number-two engine flamed out. Piché descended to 33,000 feet, the correct single-engine altitude for the aircraft’s weight, and the crew transmitted a mayday. For thirteen minutes the A330 limped on with one engine doing the work of two.

Silence at 33,000 Feet

At 06:26 UTC, about 65 nautical miles from Lajes, the number-one engine flamed out too. Now there was nothing. With both engines dead, the A330 lost its main electrical power; a small emergency ram-air turbine dropped automatically into the slipstream, spinning up just enough power to keep the critical flight instruments and the primary flight controls alive. Without it, the aircraft would have been uncontrollable.

The losses cascaded. No flaps. No spoilers. No normal braking. No bleed air to pressurise the cabin — so at 06:31 the oxygen masks dropped in front of 293 passengers, who now understood, if they had not already, that something had gone very wrong. The jet was descending at around 2,000 feet per minute. The crew reckoned they had perhaps fifteen to twenty minutes before they would have to ditch in the Atlantic.

What Piché had been taught reached back decades. He had started out in the 1970s as a bush pilot in remote Quebec, putting light aircraft down on short, rough strips in fog, wind and rain — the kind of flying where there is no autopilot and no margin. He was also an experienced glider pilot. Of all the people who could have been in that left seat with two dead engines and one island ahead, few were better prepared to fly an airliner like a glider.

The Dead-Stick Landing

Military controllers at Lajes guided the powerless jet in on radar. When the runway finally came into view, Piché had the opposite of the usual problem — he was too high and too fast, with no engines to spool up if he misjudged it and no second approach if he came up short. There would be exactly one attempt.

So he flew it like the glider pilot he was. He threw the big Airbus into a full 360-degree turn to bleed off altitude, then a series of S-turns, trading height and speed against distance with nothing but airmanship and the energy already in the airframe. It is a manoeuvre every glider pilot knows in their bones and that almost no airline captain ever has to perform in a 180-tonne jet over the ocean at night.

At 06:45 UTC the A330 slammed onto runway 33, touching down hard about 300 metres past the threshold at roughly 200 knots, bouncing once before settling. With the anti-skid system gone, the main wheels locked. The tyres abraded and burst within a few hundred feet, and the wheels ground down toward the axles as the jet thundered down the runway. It stopped with runway to spare. Then the doors blew open and the slides deployed into the Azores night.

Sixteen people suffered minor injuries and two were seriously hurt during the evacuation. The aircraft had structural damage to its landing gear and lower fuselage. But the headline number was the one that mattered: fatalities, zero. All 306 were alive.

The Azores Glider

The flight had glided roughly 65 nautical miles — about 120 kilometres, or some 75 miles — without an ounce of thrust. (Exact figures vary slightly between sources and between the moment of the second flameout and touchdown, but it stands as the longest glide ever flown by a passenger airliner in distress.) Piché and First Officer Dirk DeJager returned to a heroes’ welcome, and in 2002 the Air Line Pilots Association honoured Piché with its Superior Airmanship Award.

The investigation was unsparing about how the situation was handled, and the industry responded. Aviation regulators issued airworthiness directives mandating clear fuel-leak procedures in Airbus flight manuals; Airbus reprogrammed its fuel-monitoring computers to flag abnormal consumption against the flight plan; and Rolls-Royce warned operators about the incompatible parts. Lessons written, as so often in aviation, in the aftermath of a very near thing.

As for C-GITS: the aircraft was repaired and back in the air within about four months, flying with Air Transat for almost two more decades before retiring in 2020. It carried a nickname for the rest of its life — the “Azores Glider” — a quiet reminder, every time it pushed back from a gate, of the night it ran bone dry over the Atlantic and came home anyway.

For a tighter telling of the same night, this documentary on Flight 236 traces the chain from the hangar-floor error to the dead-stick approach into Terceira.

Engines fail. Parts get fitted wrong. Checklists get skipped under pressure. What Flight 236 proved is that when every system has run out of options, the last line of defence is still a pair of pilots who know how to fly — and a captain who, long before that night, had learned to land with nothing but altitude, airspeed and nerve.

Sources: Aviation Accidents Prevention and Investigation Department (GPIAA), Portugal — Final Report, 2004; US FAA Lessons Learned (C-GITS); Aviation Safety Network; Wikipedia; CBC News; Simple Flying; We Are The Mighty.