The Boeing 777 left St Kitts from an authorised take-off point

They also recommended a tightening up of standards and practices in the island.

The Boeing 777 left St kitts with 87 passengers on board on a section of runway that was too short for its type, an accident report said.

The Air Accidents Investigation Branch said the BA crew mistook one taxiway for another in the "serious incident".

The plane took off safely on its flight to Antigua on 26 September last year.

Just after the aircraft became airborne, BA's 39-year-old co-pilot saw grass at the end of the runway under the plane's nose, the report said.

"At this time he realised that something was not right and realised that, although the aircraft was airborne, the end of the runway was closer than normal," the AAIB said.

Authorised point

It said the 44-year-old captain had said it was normal practice to discuss taxi routes at large, busy and complex airports.

But as St Kitts was a small airport, he would have considered it "odd" if specific reference was made on how to taxi to the holding point, the report added.

The plane ended up at an intersection of a runway which was not an authorised point for Boeing 777s to take off.

The report identified a number of failings, which included:

• Airport authorities not installing any taxiway or holding point signs at St Kitts

• The crew not discussing their taxi routing

• The crew misidentifying taxiway Bravo for taxiway Alpha

• The trainee air traffic control officer not informing the flight crew they were at intersection Bravo

• BA not conducting a physical survey of the airfield; and

• It was the first time the captain and co-pilot had operated to or from St Kitts

Shortest runway

The AAIB recommended BA review the process by which inspections were made at all new destination airfields and tighten up standards at St Kitts.

The plane was left with about 1,220m (4,000ft) of take-off room, which was 695m (2,280ft) less than if should have had.

The co-pilot said the shortest runway he had operated a Boeing 777 from was about 2,000m (6,560ft).

BA's airport duty manager and station engineer were both travelling on the plane in row 10, the report said.

The engineer got up to contact the flight crew when he realised the plane was in the wrong intersection, but sat down again in row four because the take-off run was starting, the report added.