DGCA probes tail strike incident involving IndiGo plane at Chennai airport. Aviation watchdog DGCA is probing the incident on March 8. The Airbus A321 aircraft tail touched the runway during landing at Chennai. The aircraft is grounded and will be back in operations post necessary repairs and clearance, the airline said in a statement. Further details could not be immediately ascertained, a senior official at the Directorate General of Civil Aviation said. The airline also regretted the inconvenience caused to passengers due to subsequent cancellations following the grounding of the aircraft, the statement added. The incident is being investigated by the DGCA, the senior official said, but no further details were immediately available. The DGCA has been investigating the incident since March 8, the official said. For confidential support call the Samaritans on 08457 90 90 90, visit a local Samaritans branch or see www.samaritans.org for details. In the U.S. call the National Suicide Prevention Line on 1-800-273-8255.