The Directorate General of Civil Aviation (DGCA) has, however, not withdrawn approval granted to the training organisation for imparting training to the Indian pilots, a senior DGCA official said.
"There are two simulators at UK based training organisation. One was found erratic. DGCA has asked Indigo not to train pilots on erratic simulator," the official said.
Besides IndiGo, other domestic carrier Jet airways and a some British airlines also use the facility to impart simulator training to their pilots.
When contacted, IndiGo said the regulator's decree will not have any impact on its training programme as a major portion of training to its pilots is conducted at the Dubai facility of the same organisation.
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"This restriction will not impact IndiGo as we primarily conduct a major portion of our training at CAE-Dubai. The simulators used by IndiGo at CAE Dubai have been evaluated and cleared by DGCA vide OC (Office Circular) 1 of 2016," IndiGo said in a statement.
A simulator training facility generally has a number of simulators of different vintage and it was during this simulator evaluation by DGCA on May 16 that one amongst many simulators in this training facility in the UK, being used by IndiGo, was found to be short on some technical parameters, the airline said.
Over the last one, IndiGo has trained 50 Pilots (4.2 pilots /month on an average) at the various simulators available at this training centre, it added.