An Alliance Air flight from Hyderabad-Tirupati was forced to return to Hyderabad on Tuesday morning due to a technical issue with the plane's engine. The flight took off from Hyderabad at 6.35 am and was scheduled to land in Tirupati at 7.30 am. However, it took a U-turn just minutes before landing and landed back in Hyderabad at 8.30 am.