Narrative:

Cross country VFR training flight. Time enroute - 3 hours 35 minutes. Engine quit. Notified TRACON; they gave vectors to [a nearby airport]; decided we were not going to make it. Thought about [another airport]; decided too far. [I] chose landing field on southeast corner of [a] park. Open paved area; no one in vicinity. [I] performed emergency landing per poh check list.according to poh performance data; [endurance] should have been approximately 5.4 hours; allowing for 4.0 hours of flight with 1/2 hour VFR reserve. Apparent fuel exhaustion; approximately 2.0 gallons of fuel removed from aircraft.

Google
 

Original NASA ASRS Text

Title: A C152 Instructor reported engine failure due to fuel exhaustion. A safe forced landing was executed in a nearby park.

Narrative: Cross Country VFR Training flight. Time enroute - 3 hours 35 minutes. Engine quit. Notified TRACON; they gave vectors to [a nearby airport]; decided we were not going to make it. Thought about [another airport]; decided too far. [I] chose landing field on southeast corner of [a] park. Open paved area; no one in vicinity. [I] performed emergency landing per POH check list.According to POH performance data; [endurance] should have been approximately 5.4 hours; allowing for 4.0 hours of flight with 1/2 hour VFR reserve. Apparent fuel exhaustion; approximately 2.0 gallons of fuel removed from aircraft.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.