On 27 August 2009 at approximately 0610 hrs IST one aircraft was picked up by IAF radars, Southeast of Amritsar in the Northern Sector. The aircraft was flying at a flight level of 37,000 feet and entered Indian airspace on an established border entry point on ATS route. The aircraft was not in communication and also the secondary radar response code (Identification Friendly or Foe) i.e. Squawk code of the aircraft, was not correct and the aircraft was identified as ‘Unknown’. Immediately an IAF, MiG-29 fighter jet was scrambled to intercept and investigate the identity of the ‘unknown’ aircraft. It was only later that the aircraft started transmitting correct secondary radar response code and was picked up and identified by AD radar as civil airliner(A-343)of Air France(AFR-164).The flight was from Paris to Bangkok. The MiG-29 fighter aircraft was given instructions to break off and return to base. A formal report of the incident has been forwarded to AAI.