Lightning strikes Patna-Lucknow IndiGo flight at 17,000 feet, pic shows damaged nose. An IndiGo flight from Patna to Lucknow was struck by lightning at an altitude of around 17,000 feet while approaching Lucknow on Wednesday. A picture showed damage to the nose of the flight. The aircraft landed safely at Lucknow airport and all 104 passengers and six crew members were reported unhurt.