A SECOND full scale helicopter emergency in four days was launched at Sumburgh airport on Monday when a Super Puma with 19 people on board put out an alert.
The CHC operated aircraft was 60 miles east of the airport when a warning light went off in the cockpit.
Three fire engines, two police cars and an ambulance were on the scene when the chopper landed safely shortly after 3.30pm.
On Friday a Sikorsky S-92 operated by Bristow sparked a similar alert when a warning light was activated as it flew oil workers offshore, eventually landing safely at Sumburgh.