N44MM

N44MM is a Mitsubishi Diamond/MU300 Diamond, a twin-engine jet operated by MIKE MOSER INC. SkyMeter has tracked 458 flights totalling 525 hours of airtime via ADS-B. The most frequent segment is KROG to KAWM. Service window in our records spans 415 days. Of those flights, 78 (17.0%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Mitsubishi Diamond/MU300 Diamond has a 44 ft wingspan, a maximum takeoff weight of 14,630 lb.

About the Mitsubishi Diamond/MU300 Diamond

The Mitsubishi MU-300 Diamond represents one of aviation's more interesting corporate lineages: a Japanese-designed light business jet that became an American icon under Beechcraft ownership. First flown in 1978, the MU-300 was Mitsubishi Heavy Industries' entry into the competitive light jet market, featuring a distinctive T-tail, swept wings, and twin Pratt & Whitney JT15D turbofans mounted on the aft fuselage. The aircraft seated six to eight passengers and offered transcontinental range with a cruise speed around 460 knots, making it a capable alternative to the Learjet 35 and Citation II.

Beechcraft acquired the type certificate in 1985, renaming it the Beechjet 400 and later refining it into the 400A with improved avionics and interior appointments. The design proved remarkably durable. Hawker Beechcraft continued production through 2013 as the Hawker 400XP, making it one of the longest-running light jet programs in history. The type found favor with corporate flight departments, air charter operators, and the U.S. military, which operates a variant as the T-1A Jayhawk for pilot training. Its relatively low operating costs and solid construction earned it a reputation as a workhorse in the light jet category.

The MU-300's operating envelope includes a service ceiling of 43,000 feet and a maximum range of approximately 1,400 nautical miles with reserves. Its approach speed of around 110 knots and short-field capability made it suitable for smaller airports often inaccessible to larger business jets. While not the fastest or most spacious in its class, the Diamond's reliability and straightforward systems contributed to its three-decade production run, a rare achievement in business aviation. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.