- Who
- Problem Child
- What
- 420.0 kilometre(s) per hour
- Where
- United States (Phoenix)
- When
Daryl Ehrlich (USA) attained a speed of 420.0 km/h (260.98 mi/h; 226.78 knots) in the propeller-driven Problem Child at Firebird Raceway near Phoenix, Arizona, USA, on 22 November 2009. The Top Fuel Hydro boat, built by "Fast" Eddie Knox (USA) and Eddie Knox Racing, broke the record at the International Hot Boat Association (IHBA) NAPA Auto Parts World Finals.
