Page 11 - Volume 18 Number 2

useful load by including 50 pounds of ramp weight allowance. With the 28-gallon wing locker tank on the left side, a total of 234 gallons are available, leaving a scant 580 pounds of payload when topped off. Most of the time, of course, additional passengers are exchanged for less fuel. Upgrades aside, H&H’s 421C is meticulously maintained, with big items handled by Air Impressions of Waco, Texas and the between-trips attention given by the home-base pit crew, R&D American at Lees Summit Municipal airport.As we visited, N37RZ had 200 hours on a new set of RAM GTSIO-520 engines, turning four-blade MT composite-blade propellers that were installed by MT USA in Deland, Florida. The smaller diameter props operate quietly and smoothly, according to Tim Stanley, who says “You are able to converse in normal tones in the cabin, and the airplane’s smoothness is about as close to a jet-like experience as you can get.” He also reports a 200- fpm increase in climb rate from the four-blade props, with no weight! DOWTY! HARTZELL! MCCAULEY! MT PROPELLER! SENSENICH! RAPCO DISTRIBUTOR! WOODWARD PT6Ahttp://www.rockyprop.com e-mail: rockyprop@rockyprop.com! LARGE INVENTORY ! SAME DAY SHIPPING ! UNCOMPROMISED QUALITY ! COMPETITIVE PRICES ! WORLD CLASS WARRANTY ! FACTORY TRAINED TECHNICIANS2865 AIRPORT DRIVE ! ERIE, CO 80516AX: 303-665-7164 ! FAA/EASA CRS FR6R545NFEBRUARY 2014TWIN & TURBINE • 9