The BSF today said its crashed Superking aircraft that killed ten of its highly experienced personnel was completely "airworthy" and was flying "very well" as it refuted allegations about any possible defect in the ill-fated plane.

"This aircraft was 20-years-old and in the aviation (domain) an aircraft has life till 40-45 years. In the aviation (domain) such a plane is not considered old as required parts are changed from time to time...like engines are overhauled.

"A major overhauling of this aircraft's engines was done at the Beachcraft factory in Canada about six months back. Only two days back this aircraft did a good duty and a day back it had carried back officers from Bhuj (from the DG/IG meeting)," BSF Director General D K Pathak told reporters today.

"There was no problem in the aircraft and it was completely airworthy. I would like to add that till the time an aircraft is airworthy, there is no problem in flying it," he said.