N139MT

N139MT is a Piper Seminole, a twin-engine piston aircraft operated by MIDDLE TENNESSEE STATE UNIVERSITY. SkyMeter has tracked 1,720 flights totalling 1,177 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is KMBT to KMBT. Service window in our records spans 399 days. Of those flights, 48 (2.8%) carry at least one detected incident — go-around, unstable approach, stall warning, or runway excursion. The Piper Seminole has a 39 ft wingspan, a maximum takeoff weight of 3,800 lb.

About the Piper Seminole

The Piper PA-44 Seminole is the world's most popular twin-engine piston trainer, introduced in 1978 as a more affordable alternative to the earlier PA-34 Seneca. Built around two counter-rotating Lycoming O-360 engines producing 180 horsepower each, the Seminole eliminated the critical engine problem that complicates single-engine handling in conventional twins—a feature that made it immediately attractive to flight schools teaching multi-engine ratings. Its docile handling, relatively low operating costs, and forgiving stall characteristics turned it into the de facto standard for commercial pilot training across North America and beyond.

The aircraft cruises at around 160 knots and has a service ceiling of 17,000 feet, modest figures that reflect its mission as a trainer rather than a traveling machine. Its light wing loading and benign spin characteristics make it ideal for practicing engine-out procedures, and its simple systems—no pressurization, no turbos in the base model—keep maintenance straightforward for training fleets that fly hundreds of hours per month. Thousands of professional pilots earned their multi-engine ratings in Seminoles, and the type remains in production today with glass-cockpit avionics and minor refinements, a testament to the original design's enduring practicality.

SkyMeter has tracked flights across airframes and operators, with the largest observed operator.