The only practical way to reach such a remote and isolated place like the Kelabit Highlands is to fly on MASwings' Twin Otter plane (about 45 mins)
From my front row seat, I could watch the pilots flying the plane. Cockpit has no door so you could say Hi to the pilots.
The pilots were mad with me for getting too close. One of them got out and scolded me, "This is an airport. You want to get your head chopped off?"
The handsome Twin Otter. NO welcoming party on board. Just grab any seat you fancy.
No toilets either. So if you get CON (call of nature) you're in deep trouble.