The Learjet crashed on Monday, October 8, 1984, after taking off at SFO.
Jet Explosion on Takeoff Laid To Plane Tail Hitting Runway
Published: October 10, 1984, New York Times
According to the National Transportation Safety Board (the U.S.
government agency that investigates plane crashes), the reason for the
crash is still officially "undetermined."
"Accident occurred Monday, October 08, 1984 in SAN FRANCISCO, CA
Aircraft: Gates Learjet 24B, registration: N864CL
Injuries: 3 Fatal.
REASON FOR OCCURRENCE UNDETERMINED "
The money was found in the trunk of a rental car two weeks later, but
the incidents appear unrelated. The New York Times indicates that the
car was parked at SFO on October 1, 1984, which would have been one
week before the Learjet crashed. The matter of the abandoned rental
isn't really "unsolved" at this point, as a Federal judge ruled in
1985 that the money was drug-related and was, therefore, government
property under the forfeiture laws.
From the New York Times (10/25/84):
"AROUND THE NATION; Nearly $6 Million Found In Auto at Coast Airport
Nearly $6 million in cash, gold and platinum has been found in the
trunk of a rented Ford seemingly abandoned in the long-term parking
lot of San Francisco International Airport, Federal agents reported
source: New York Times, October 25, 1984
" Judge Gives the Government $6 Million Found in Car Trunk
Judge Samuel Conti said the amount of cash, the presence of cocaine
residue and a Federal agent's statement about the man who rented the
car using a fraudulent driver's license were indications that the
money was involved in the buying or selling of illegal drugs.
The car was left in an airport parking lot Oct. 1. The $5.64 million
in cash, 450 Canadian gold coins worth $157,500, and 500 platinum bars
worth $162,500 were found in luggage in the car's locked trunk after
employees of the car rental agency opened it. "
source: New York Times, April 23, 1985:
new york times archive:
"in the trunk" million "san francisco international"
learjet 1984 etc
I hope this helps.