By LEO ALIGWO,Lagos An Indigenous aircraft pilot, Captain Ahmad Mahmaoud has taken a strong look at the current state of nation’s 25 operational airports and called for thorough overhaul of obsolete navigational aids, installation of modern ones and improvement of security net work at the gateways to save lives and property. He lamented that aside the four international airports at Abuja, Lagos, Kano and Port Harcourt the remaining 21 aerodromes lack Instrument Landing System (ILS) for effective day and night flight operations. Captain Mahmoud who works for the United Nigeria Airline, made the call during an interactive section of the 2024 annual two-day seminar of Air traffic Control (ATC)-Pilot Forum which kicked off yesterday at the Murtala Mohammed International Airport, Ikeja. He hinted that the frequent cases of flight delays and cancellations were due to the above listed factors; hence flight services to most of the airports were restricted to sunset known as visual landing fo