5 Sqn RNZAF - P3B
IIRC, the kiwis kept a P3B airborne for c 20 hours in the late 60s, when the aircraft were new and state-of-the-art (now they are 44 years old and...state-of-the-art!).
Perhaps a fishead from 5 Sqn could confirm this stat? There used to be a plaque up in the crew room from Lockheed.