G'Day 'Binghi',
Yep. Used to carry my trusty (new) .303 Lee Enfield in the cab. when I was flying Aus/PNG on a couple of occasions in the 'good ole days'.
Those 'logs' in the rivers around Daru - Morbid were pretty impressive some times - especially when they moved 'upstream'....
T'was duly declared at Horn to Aus Customs on departure in those days.
Glad I never had to use it though....
(It would have meant I'd lost the air-conveyance...)
And, no EPIRBS in those days - but flares etc were OK and encouraged.
Are they not incendiary - like guns /ammo?
Cheers