No fatalities

1981-03-29: Boeing 707 (OO-SJA) — Sobelair — Brussels, Belgium

Brussels, BelgiumLanding (descent or approach)

On March 29, 1981, a Boeing 707 (registration OO-SJA) operated by Sobelair was involved in an aviation accident near Brussels, Belgium during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: The explosion of engine number 3 was determined to be the result of the disintegration of a compressor blade on the 10th stage due to fatigue cracks. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 3 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781222792Data APIEditorial standards
Boeing 707
Photo: USAF / Public domain, via Wikimedia Commons

A four-engine charter flight with 117 occupants experienced an engine explosion during climb. The crew returned for an emergency landing, but the aircraft overshot the wet runway and veered off. No casualties occurred, but the aircraft was damaged beyond repair.

Incident

On a charter flight from Brussels-Zavantem Airport to Tenerife-Sur Reina Sofia, a four-engine aircraft departed runway 02 at 0929 local time. On board were 110 passengers and a crew of seven. Shortly after takeoff, while climbing to 7,000 feet, engine number 3 exploded and caught fire. The crew declared an emergency and received clearance to return for a landing on runway 25L, which was longer than runway 02.

Emergency Landing

After the fire was contained, the aircraft was on final approach. During the last turn, the aircraft was approaching too fast and overshot the intended touchdown point. The pilot then decided to land on the wet runway 25R. Following touchdown, the reversers on engines 1 and 4 were activated, and the crew initiated emergency braking.

Runway Excursion

At a speed of approximately 80 knots, the captain determined that the remaining runway distance was insufficient. He decided to steer the aircraft to the left of the runway. The aircraft veered off the runway, entered loose soil, and came to rest.

Aftermath

All 117 occupants were quickly evacuated, and there were no casualties. The aircraft sustained damage beyond repair.

Investigation

The official investigation determined that the explosion of engine number 3 resulted from the disintegration of a blade on the 10th stage of the compressor due to fatigue cracks. Contributing factors included an approach with one engine inoperative, an aircraft weight above the maximum allowable for landing, an excessive approach speed, improper use of brakes, and failure to utilize all available braking options.

Probable cause

The explosion of engine number 3 was determined to be the result of the disintegration of a compressor blade on the 10th stage due to fatigue cracks. Contributing factors included an approach with one engine inoperative, landing weight exceeding maximum allowable, excessive approach speed, improper brake use, and failure to use all available braking options.