Note the number 69 on the runway
number 69 is an innuendo of the 69 sex position recurring gag throughout the GTA series. This page lists some of its appearances in their respective games:
GTA: London 1969
The play 69th Street advertised around Liberty City.
In the registration number of the Dodo it says " Y-ME369".
GTA: Vice City
GTA: San Andreas
GTA: Liberty City Stories
GTA IV & Episodes From Liberty City
The Fire Trucks have the numbers 69 written on the side of them.
The 69th Street Diner. Similar-looking " 60 Diner" restaurants are also seen around the city.
There is brand of Cuban cigars called 69 Brand.
On the side of buses in Liberty City.
The achievement and trophy Get Good Wood (which is also a sexual reference itself) in The Lost and Damned is earned by whacking 69 bikers off their bikes with a bat during Races in The Lost and Damned.
If you look closely at LCPD officers in GTA IV, you can see the number on their collar is 69.
The strippers in have $69 bills strapped to their body.
On the Rockstar Games Social Club, there is a millionaire club for GTA IV and all the dollar bills have 69 printed on them.
The Pump Shotgun in GTA IV has etching on the gun reading "Model no. 69."
The car that Niko drives in the starting credits has the number 669 on it.
Hinterland's slogan in GTA IV: "Doing it hard since 1869".
If you take a helitour, Rob the pilot will sometimes talk about 69 murders committed in Middle Park in the previous year.
In The Lost & Damned, Malc has 69 patched on his jacket.
In GTA V the golf club's 8th hole is 169 yards.
69 is seen behind the Vinewood Sign on one of the screenshots.
During the mission Blitz Play, the number plate on the Securicar has a 69 on it.
Look at the number plate shown on the back of the vehicle.
GTA V has a total of 69 main story missions.
The Hands On Car Wash phone number is 555 0169.
The Los Santos/Venturas airport's "69" highway has been changed to 21.
Certain vehicle's licence plates or body spray has "69" hidden in them.
On Michael's personal vehicle, on all four of the wheels, there are dollar signs. But if the wheels are turned to a horizontal degree, it appears that the dollar signs are actually a very well, clever hidden illusion showing 69.
 On Devin Weston's website "www.bedevinweston.com" there is a quote written by Devin "6 black belts, 9 inches"
The Cargobob that is used by Trevor in Monkey Business has the registration number that reads "N-LS69".
Other Rockstar Games games that includes 69
in Midnight Club 3 DUB Edition, the interstate is called 69, but there's a race called 'Interstate 75' instead 69
Thrust (Note the 69 right)
69: The Bureau Raid - the Roof Entry variant (Accessed on 7-2-09)