On June 10, 1990, British Airways Flight 5390 suffered a catastrophic structural failure when its forward left windscreen blew out at 17,300 feet over Oxfordshire, England. The sudden explosive decompression sucked Captain Tim Lancaster halfway out of the cockpit window, leaving him pinned against the exterior fuselage by a violent slipstream while First Officer Alastair Atchison fought to save the plane and its 81 passengers.
This terrifying incident remains one of the most astonishing examples of survival, crew coordination, and manual flight handling in commercial aviation history. It exposed critical flaws in aircraft maintenance procedures and redefined how airlines approach quality control on replacement parts.
The Routine Flight That Turned to Nightmare
At 08:20 local time, the BAC One-Eleven aircraft lifted off from London Heathrow Airport bound for Málaga, Spain. Everything was normal during the initial climb. The cabin was pressurised, passengers were settling in, and the flight crew was monitoring the instruments as the aircraft ascended through 17,300 feet.
Then, a massive bang shattered the quiet. The forward left windscreen panel separated entirely from its frame. The pressure differential between the warm, air-conditioned cabin and the thin, freezing atmosphere outside created an instant explosive decompression.
- The blast ripped Captain Lancaster's seat and safety harness completely from the flight deck floor.
- He was forced outward through the window frame, with only his legs wedged around the control column preventing him from being entirely lost to the slipstream.
- His head and upper torso slammed against the fuselage exterior, exposed to sub-zero temperatures, deafening wind noise, and air rushing at over 400 miles per hour.
The Battle Inside the Flight Deck
First Officer Atchison was instantly thrown forward by the rush of air, momentarily stunned before realizing the gravity of the emergency. The autopilot disconnected immediately, and the aircraft began a rapid, uncontrolled descent while buffeting violently.
The roar of the rushing air made verbal communication inside the cockpit nearly impossible. Cabin crew members, led by flight purser Nigel Ogden, rushed into the flight deck upon hearing the explosion. Ogden instinctively lunged forward and grabbed Captain Lancaster around the waist, holding onto his legs to prevent him from slipping further out into the slipstream.
As the minutes ticked by, Ogden's arms began to freeze and go numb. Other flight attendants joined the struggle, forming a human chain to secure the captain while simultaneously monitoring frightened passengers in the cabin.
Atchison faced a monumental piloting challenge. The aircraft was vibrating severely, flight instruments had been damaged, and Lancaster's legs jammed against the control column, restricting movement. Despite these hazards, Atchison managed to re-engage the autopilot's lateral navigation mode, maintain control of airspeed, and coordinate an emergency diversion with air traffic control.
The Investigation and Maintenance Failure
When the Air Accidents Investigation Branch examined the wreckage, they uncovered a startling human error that caused the disaster. Just 27 hours before the flight, a duty maintenance manager had replaced the windscreen panel.
Instead of consulting the aircraft's maintenance manual to check the correct parts, the mechanic relied on visual comparison with the old bolts. He installed 84 bolts that were too small in diameter and 6 bolts that were too short.
- The incorrect bolts were unable to withstand the normal pressure differential encountered during flight.
- The outward force of the cabin pressure forced the windscreen inward first, then sheared the undersized bolts outward, causing total panel detachment.
- The AAIB report emphasized that maintenance oversight, poor lighting during the overnight shift, and a lack of independent inspection contributed heavily to the mistake.
You can read more about transport safety regulations through the UK Government Transport Department.
The Miracle Landing and Aftermath
Atchison guided the BAC One-Eleven toward Southampton Airport, the nearest suitable runway. At 08:55—just 20 minutes after the window blew out—the aircraft touched down safely on runway 20.
Emergency services rushed to the plane. Miraculously, Captain Lancaster was still alive. He suffered severe frostbite, bruising, multiple fractures to his arms and hands, and shock, but remarkably no permanent brain damage. He returned to flying for British Airways just five months later.
First Officer Atchison and cabin crew members received high commendations for their bravery. Atchison was awarded the prestigious Queen's Commendation for Valuable Service in the Air, and the flight crew's collective composure averted a total loss of life.
Frequently Asked Questions
Why didn't the captain get sucked out completely?
Captain Lancaster's knees were caught on the flight controls when the seat was torn away. This mechanical wedge kept his lower body inside the cockpit while cabin crew members held onto his legs during the entire descent.
How cold was it outside at 17,300 feet?
At that altitude, ambient air temperatures drop significantly below freezing, often reaching -20 degrees Celsius or lower, which contributed to the severe frostbite Lancaster suffered during the ordeal.
What changes were made to aviation maintenance after Flight 5390?
The incident prompted strict global mandates requiring independent dual-inspection systems for critical flight deck components. Maintenance staff must now verify part numbers against official manuals rather than matching old hardware visually.
Did any passengers sustain injuries?
While the physical injuries were concentrated in the cockpit, several passengers suffered from shock, minor cuts from flying debris, and temporary hearing damage due to the sudden explosive decompression and loud wind noise.
