To ensure that there is no illegal cockpit entry in airlines, several measures can be taken. The Directorate General of Civil Aviation (DGCA) has issued advisories to airlines to implement the following measures:

• Strengthening the security of cockpit doors: Airlines should ensure that the cockpit doors are reinforced and resistant to forced entry. This can be done by using sturdy materials and advanced locking systems.
• Implement a strict access control system: Airlines should have a strict access control system in place, which includes verifying the identity of individuals before granting access to the cockpit.
• Train flight crew on cockpit security: Flight crew members should receive comprehensive training on cockpit security procedures, including protocols for handling unauthorized individuals and techniques to prevent illegal entry.
• Enhance surveillance systems: Airlines should invest in advanced surveillance systems, including CCTV cameras, to closely monitor the aircraft cabin and detect any suspicious activity near the cockpit.
• Promote communication between cabin crew and flight deck: There should be open lines of communication between the cabin crew and flight deck to raise alerts in case of any security breaches or suspicious individuals.
• Regular security audits: Airlines should conduct regular security audits to identify any vulnerabilities in their cockpit security systems and take necessary corrective actions.

Implementing these measures can play a crucial role in ensuring the safety and security of the cockpit, preventing illegal entry, and maintaining overall aviation security.