Two Birds of a Feather - S3-E19
Factual error: In his 'Nam flashback at the beginning, Magnum has (another) fun encounter with a large macaw. Green macaws (or any macaw for that matter) are not something he would have found in a Vietnam war mission, unless he inadvertently crossed the Pacific Ocean and ended up in South America. (00:02:00)
Two Birds of a Feather - S3-E19
Factual error: When Sam climbs on the plane to give chase to the baddies, the tail number is N64CE. When he takes off though, the control tower announces the clearance for "Sixty-four Charlie Lima." Should have been Charlie Echo. (00:41:35 - 00:42:30)
Two Birds of a Feather - S3-E19
Factual error: No matter how good of a pilot Samuel is, he's chasing a Learjet 24 plane with a WWII design P-51 Mustang (that he does not even know how to start, but of course fictional pilots can just 'wing it' and do amazingly). Assuming that speed is not a factor since the bad guy is not flying at top speed just yet (but still he has a projected arrival time of 6 hours, meaning he'd fly around 700 kmh), they do the chase at high altitude (42,000 feet are mentioned), with Samuel not wearing a mask or anything in a non-pressurized plane! He'd have passed out.
Two Birds of a Feather - S3-E19
Factual error: Sam crashes the plane running out of gas, but just barely. His boss and the client are mad at him, but he actually worked some miracle, since from Van Nuys to Honolulu there's a distance of over 2,200 nautical miles, and even considering additional fuel tanks, that is over 3 times the range of the Cessna 172 plane he was flying, also considering it had headwind throughout the voyage (it's even a plot point).