VH-ZMJ

VH-ZMJ is a Piper Navajo PA-31, a twin-engine piston aircraft operated by PRIME BUILDING AND PROPERTY SOLUTIONS PTY LTD. SkyMeter has tracked 184 flights totalling 570 hours of airtime via ADS-B. The most frequent segment is YBAF to YBAF. Service window in our records spans 412 days. Of those flights, 22 (12.0%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Piper Navajo PA-31 has a 41 ft wingspan, a maximum takeoff weight of 6,500 lb.

About the Piper Navajo PA-31

The Piper PA-31 Navajo is a twin-engine piston workhorse that defined light charter and air taxi operations from the late 1960s onward. Introduced in 1967, the Navajo filled the gap between single-engine aircraft and larger turbine twins, offering seating for six to eight passengers, counter-rotating engines for docile handling, and enough range to connect remote communities across North America, Australia, and beyond. Its rugged construction and relatively forgiving flight characteristics made it a favorite among bush operators, freight haulers, and small regional carriers who needed reliable performance on short, unpaved strips.

Piper built the Navajo family in several variants (the baseline PA-31, the stretched PA-31-350 Chieftain, and the pressurized PA-31P Mojave), but the original PA-31 remains the most common. Powered by two Lycoming TIO-540 engines producing 310 horsepower each, the Navajo cruises around 200 knots and can haul useful loads exceeding 2,000 pounds, making it practical for both passenger charters and cargo missions. Its cabin is unpressurized, limiting operations to lower altitudes, but the trade-off is simplicity and lower operating costs compared to turbine alternatives.

Though production ended in the early 1980s, hundreds of Navajos remain in active service worldwide, particularly in Australia, Canada, and Alaska, where their ability to operate from marginal airstrips and carry diverse payloads keeps them economically viable. The type's longevity is a testament to Piper's straightforward engineering: parts remain available, and mechanics familiar with the airframe are still common at rural airports. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.