New Delhi, August 13: As per the recent data, as on an average about 30 airplane incidents do take place, including go-around, missed approaches, diversion, medical emergencies, weather, technical and especially bird hits on which DGCA issues guidelines for airports across India to check the incidents of wildlife collision with planes. On the same, DGCA advised airports to carry out routine patrolling in random patterns and informing pilots whenever there is a movement of any wildlife activity. Also Read | Salman Rushdie on ventilator after attack, may lose an eye The regulator also stated in a circular that all operators at airport should review their wildlife hazard management programme to identify the gaps and ensure its strict implementation in and in the vicinity of an aerodrome. DGCA also asked the airports to carry out a wildlife risk assessment and rank them according to the risk posed to aircraft. It also stated that airports must have some procedure to monitor and record wildlife movement data. The airports should also have a procedure to notify pilots "in response to any significant wildlife concentration or activity both on and in the vicinity of the airport", it mentioned. Earlier also various bird hits incidents took place last week. On August 5, Vistara flight from Varanasi to Mumbai was returned back to its origin due to a bird hit. Meanwhile, On June 20, a Delhi-bound aircraft of the SpiceJet airlines carrying 185 passengers caught fire soon after taking off from the Patna airport and made an emergency landing minutes later due to a bird hit. Also Read |'Har Ghar Tiranga' campaign starts: Amit Shah, ITBP hoist national flag On the same day, another Delhi-bound IndiGo flight from Guwahati returned to Guwahati airport due to a suspected bird hit after the takeoff. -PTC News