Interesting because it worked in the 5 x Eket Bell 212s that I flew when the Greenies from Hell were on the case (my logbook went for a swim but I recall 5N-AJS, 5N-ALQ & 5N-AOE as 3 of them). I was there when the contract changed to 5 'younger' Bell 212s, including 5N-BHM (ex G-BJJO) & 5N-BHN (ex G-BJJP). Both of these had Sperry Helipilot but the Flight Directors were removed before they arrived in Nigeria - so no Altitude Hold facility as required for Single Pilot IFR.
The original 3 212's arrived piecemeal fitted with SFENA, we never had the spares, people who understood it including the aircrew. The solution was to fly in Simplex. By the early to mid 80's we spent most of our time replacing looms, connecters etc, and flying a lot of the time without SFENA at all(Fixed Rods) until the helipilot conversions of the Warri aircraft released another pool of spares into the system which certainly helped with serviceability. And all Greenies are " Greenies from hell"
