A Delhi-bound Air India Boeing 787-8 Dreamliner flight has been forced to turn back on Monday after the aircraft’s pilot said the jet was facing technical issues mid-air. The Air India flight, AI 315, was operating from Hong Kong to Delhi and had departed from the Asian city at 11.59am local time for its scheduled destination in New Delhi.

Air India and Boeing are in the midst of significant turnarounds, but knowing the cause of the crash of Flight 171 will take a lengthy investigation.

An Air India pilot turned back his Delhi-bound Boeing 787-8 Dreamliner to Hong Kong airport as a precaution shortly after taking off on Monday, citing a technical issue, Indian media reported. Flight tracking data showed the pilot turning Flight AI315 around less than 30 minutes into the flight from Hong Kong.

Boeing was generating optimism. Then on Thursday a 787 crashed, raising the specter of fresh problems for Boeing and altering the message it planned to send.

Air India flight AI171, a Boeing 787-8 carrying 242 people, crashed after taking off from Ahmedabad on its way to London.

Officials say at least 270 bodies have been recovered, while the lone surviving passenger is still under observation for some of his injuries.

Thursday’s deadly crash struck at Boeing’s most ambitious and one of its most commercially successful jet programs — a coveted airplane that airlines the world over gladly wait years to receive.

An Air India Boeing 787-8 Dreamliner plane bound for New Delhi returned to its origin of Hong Kong as a precautionary measure on Monday after a technical issue was suspected mid-air, the latest incident affecting the airline in recent days.

The harrowing incident saw the London-bound Air India Boeing 787 Dreamliner plunge into a residential area in Ahmedabad, Gujarat, killing 241 passengers on board and another 38 people on the ground. Now, commercial airline pilot and crash analyst Steve Schreiber has pointed to fresh footage as a key breakthrough in understanding what went wrong.