The pilot decided to return after oxygen masks dropped at a height of 20,000 feet, around 15 minutes after take-off.
An Air India flight to Frankfurt was forced to return to the Delhi airport on Wednesday after it suffered mid-air decompression. “Air India flight AI121 operating from Delhi to Frankfurt today faced an issue of decompression and returned to Delhi,” the airline said in a statement. “No passenger suffered any injury.”
The air is extremely thin at higher altitudes due to low atmospheric pressure and oxygen. In order to avoid injuries and ill-effects on flyers’ health, aircraft maintain a specific internal cabin pressure.
“The flight will now operate with a change of aircraft at 0600hrs [6 am] on 7th March from Delhi,” added the statement. “All passengers are safe and are being extended all assistance at Delhi.” The standard departure time of the flight is 1.35 pm.