N391FL

N391FL is a Convair-Canadair Convair CV-580/600/640, C-131H, a twin-engine turboprop operated by IFL GROUP INC. SkyMeter has tracked 588 flights totalling 1,112 hours of airtime via ADS-B across 11 callsigns. The most frequent segment is KOPF to KOPF. Service window in our records spans 416 days. Of those flights, 98 (16.7%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Convair-Canadair Convair CV-580/600/640, C-131H has a 105 ft wingspan, a maximum takeoff weight of 58,500 lb.

About the Convair-Canadair Convair CV-580/600/640, C-131H

The Convair 580 represents one of aviation's most successful second-life stories: a 1950s piston airliner reborn as a turboprop workhorse that outlasted its original design by decades. Beginning in 1960, hundreds of Convair 340s and 440s were retrofitted with Allison 501-D13H turboprops, transforming fuel-thirsty piston twins into efficient regional haulers. The conversion added 50 knots to cruise speed, dramatically improved single-engine performance, and extended service life by generations. While the type disappeared from scheduled passenger service in North America by the 1990s, it found enduring purpose in cargo operations, particularly across Canada's vast distances where its 2,500-nautical-mile range, rugged construction, and ability to operate from shorter runways made it ideal for freight and charter work.

The CV-580's operational envelope reflects its hybrid heritage: a maximum operating speed of 289 knots IAS, approach speeds around 110 knots, and a 58,140-pound maximum takeoff weight that allowed substantial payload capacity. Its pressurized cabin and all-weather capability made it a reliable performer in harsh northern climates. Today the type serves primarily with Canadian cargo operators, where airframes built in the Eisenhower era continue flying night freight routes that would be uneconomical for modern turbofans.

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