Well, a Filipino tried a copycat hijacking back in Y2K with a homemade parachute with the expected results:
The hijacker was armed with a grenade and a handgun and hid behind a blue ski mask. He initially ordered the plane's pilot to return to Davao City from where the Airbus 330 with registry number F-OHZN took off at about 2 p.m. yesterday.
The pilot refused, however, saying the plane did not have enough fuel for a
return trip.
PAL spokesman Rolando Estabillo said the plane was depressurized while circling 13 miles from Manila to permit the hijacker to jump at 6,000 feet from the plane's door 14 located near the jet's left rear tail.
The plane was under the command of, you guessed it, Captain Geronimo:
The plane's co-pilot Carlos Neri said the hijacker was able to enter the cockpit by threatening to shoot a flight attendant if command pilot Capt. Emmanuel Geronimo would not open the door.
Hijacker jumps off PAL jet after robbery | Headlines, News, The Philippine Star | philstar.com
Some of the accounts had the hijacker given a power assist out the door by a flight attendant à la Harrison Ford.
A couple of days later the hijacker was found but, perhaps predictably, the money was missing:
Hijacker Dies After Makeshift Parachute Fails
May 26, 2000|From Associated Press
MANILA — The body has been found of a man who tried to hijack a Philippine Airlines jet with 291 people on board, then bailed out at 6,000 feet wearing a homemade parachute, authorities said today.
Soldiers recovered the body of Augusto Lakandula about 40 miles east of Manila in a heavily forested area after residents reported seeing a parachute landing Thursday afternoon, a military official said.
The improvised parachute was with Lakandula but not the money he took from the others aboard the plane, the official said. Lakandula was identified through his seat number on the plane.
Officials theorized that the parachute opened after the leap from the Airbus 330, then failed.
Hijacker Dies After Makeshift Parachute Fails - latimes
The 727 in the D.B. Cooper hijacking apparently eventually went to Key Airlines as N29KA to fly the Janet shuttle between Las Vegas, Area 51 and other points of interest.