Source: Simon Hradecky | www.avherald.com

A British Airways Boeing 747-400, registration G-CIVO performing flight BA-212 from Boston,MA (USA) to London Heathrow,EN (UK), was enroute at FL390 about 100nm north of Moncton,NB (Canada) when the crew donned their oxygen masks, declared Mayday reporting smoke in the cockpit and decided to return to Boston. The aircraft descended to FL380 for the return and landed safely on Boston’s runway 33L about one hour later, the flight crew was still on oxygen masks until after landing. The aircraft vacated the runway and taxied to the apron. All crew were taken to a hospital for checks.

A passenger reported the aircraft returned to Boston due to smoke in the cockpit, they had no lights on the way back to Boston.

Initial information received by The Aviation Herald suggested the aircraft allegedly had experienced fumes in cockpit and cabin. All 10 crew were taken to hospitals.

The occurrence aircraft is still on the ground in Boston about 21 hours after landing.