The Nigerian Air Force (NAF) inducted a single Mi-171E and two AW109M helicopters on 6 February in a high-profile ceremony in Abuja that was attended by President Buhari. The NAF announced in January that two new AW109Ms and been delivered but its procurement of the Mi-171E was previously unreported. This is an export version of the Russian military’s Mi-8AMT with VK-2500-03 engines, making it appropriate for hot-and-high conditions.
A NAF officer said during the induction event that the NAF was expecting a second Mi-171E to be delivered, as well as three JF-17 jet fighters and 12 EMB 314/A-29 Super Tucano light attack turboprops.
Russia’s Rosoboronexport defence export agency announced in September 2014 that Nigeria had ordered six Mi-171Sh (the export version of the Mi-8AMTSh) and six Mi-35M helicopters.
However, the deputy head of Russia's Federal Service for Military-Technical Co-operation said in September 2016 that Nigeria had signed a contract in October 2015 covering 12 Mi-35M attack helicopters, without mentioning any transport types.
Meanwhile, NAF officers have stated that six Mi-35Ms had been ordered without mentioning any Mi-17s. The first two Mi-35Ms were inducted in April 2017, with a second pair following a year later.
Source - Janes