Frater didn't fly on it, but had a look around. It was Mandala. "Its four engines looked like antique air-cooled radials, and even the three-bladed propellers had been burnished...What was it? A converted Flying Fortress? A restyled Lanc? Or something built locally from bamboo and hammered Capstan cigarette tins? I tried to find out."
"I approached the marshal "Viscount" he snapped. "That's no Viscount". "It's a Super Viscount""
My guess? Most likely an Electra.
I only found this because I've recently read the book, and knew where to find the bits.