In the early to mid 80’s, I was a trader to Brazil and flew on the HS 748 weekly. We nicknamed her “Flop Hat,” although I’m not sure why. At that time, GAC had daily service into Lethem, Rupununi, Guyana South America, and the daily arrival of Flop Hat was the high point of the day. It was the only way in and out. After a short time, we could tell which aircraft was approaching – whether sky van, 748, islander, or DC 6 – by the sound of their engines.