N121D

N121D is a Beech Bonanza 33, a single-engine piston aircraft operated by SONGBIRD AVIATION LLC. SkyMeter has tracked 278 flights totalling 251 hours of airtime via ADS-B. The most frequent segment is KDVO to KDVO. Service window in our records spans 407 days. Of those flights, 14 (5.0%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Beech Bonanza 33 has a 34 ft wingspan, a maximum takeoff weight of 3,400 lb.

About the Beech Bonanza 33

The Beechcraft 33 Debonair, later rebranded as the Bonanza 33, is the straight-tail sibling of the iconic V-tail Bonanza and represents Beechcraft's answer to pilots who wanted conventional empennage handling without sacrificing the Bonanza's famous speed and comfort. Introduced in 1960 as a lower-cost alternative to the Model 35, the Debonair featured the same rugged all-metal construction and spacious four-to-six-seat cabin but traded the distinctive V-tail for a conventional tail to appeal to more conservative buyers and flight schools. By 1968, Beechcraft dropped the Debonair name entirely and marketed the aircraft simply as the Bonanza 33, acknowledging that pilots valued the straight-tail configuration as much as the original design.

Powered by a Continental IO-520 or IO-550 engine producing between 285 and 300 horsepower depending on the variant, the Bonanza 33 cruises comfortably at 170 knots and climbs efficiently to altitudes where most single-engine pistons struggle. The type's retractable landing gear, constant-speed propeller, and relatively high wing loading give it excellent cross-country performance and stability in turbulence, making it a favorite among serious owner-pilots and small charter operators. The F33A, the most common variant still flying today, features a fuel-injected engine, improved avionics options, and a gross weight of 3,400 pounds.

While it never achieved the cult status of the V-tail Model 35, the straight-tail Bonanza earned a reputation for predictable handling, lower insurance premiums, and easier maintenance, qualities that have kept the type popular in the general aviation fleet for more than six decades. Production continued until 1995, with nearly 4,600 Debonair and Bonanza 33 airframes built. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.