Embraer Erj-145

Twin Jet· 379 globally registered

The Embraer ERJ 145 is a 50-seat regional jet that became the backbone of North American regional airline networks in the late 1990s and early 2000s. Launched in 1995 and entering service with ExpressJet in 1997, the ERJ 145 was Embraer's first clean-sheet regional jet design and established the Brazilian manufacturer as a serious competitor to Bombardier in the lucrative 50-seat market. Its twin Rolls-Royce AE 3007 turbofans, rear-mounted in a distinctive T-tail configuration, deliver enough thrust to cruise at 37,000 feet while maintaining the fuel efficiency that made it attractive to scope-clause-constrained U.S. carriers. The type's success stemmed from hitting a regulatory sweet spot: U.S. pilot union contracts in the 1990s limited mainline carriers' regional partners to aircraft with 50 seats or fewer, and the ERJ 145 maximized passenger capacity within that constraint while offering jet speed and comfort that turboprops couldn't match. At cruise, it typically operates around Mach 0.74 to 0.76, covering stage lengths up to 1,550 nautical miles, enough to connect regional cities to major hubs efficiently. The aircraft's relatively high approach speed of around 125 knots and short landing gear made it less suitable for smaller regional airports than turboprops, but its jet performance won over passengers and airlines alike. Over 1,000 ERJ 145s were built before production ended in 2020, with the type serving airlines on every continent. American Eagle, ExpressJet, and other U.S. regional carriers operated large fleets, while the platform also spawned military variants including the Brazilian Air Force's R-99 surveillance aircraft. Though newer 70-76 seat jets like the E175 have largely replaced it in mainline regional networks, the ERJ 145 remains in widespread service with smaller carriers and continues to prove the viability of Embraer's original 50-seat jet concept. SkyMeter has tracked 686 flights across 134 airframes and 7 operators, with AMERICAN AIRLINES INC the largest observed operator.