Cessna Citation I Aircraft (Model 500 / 501)

The Citation I (Model 500 and 501 SP) was Cessna's first jet — the aircraft that proved a straight-wing, slower, fuel-frugal design could open business aviation to a broader owner base. Introduced in 1971, it was deliberately slower than the Learjet or Falcon to keep acquisition and operating costs accessible, a design choice that divided early reviewers and built a loyal following.

Engine: Two Pratt & Whitney Canada JT15D-1/-1A engines (the Model 500 used the JT15D-1, the 501 the -1A). This is the earliest commercial JT15D family; parts and shops exist but confirm availability in your region — it is significantly older than the JT15D-4/5 used in later Citations.

Single-pilot variant: The Model 501 Citation I/SP was one of the first business jets certified for single-pilot operation, which defined the Citation brand's owner-flown identity. Confirm whether an individual aircraft is the SP-certified 501 or the standard two-crew 500 before buying.

Age consideration: The youngest Citation I aircraft are now 40+ years old. Inspect for corrosion, airframe fatigue, avionics obsolescence, and any open ADs carefully. Pre-buy by a shop familiar with the Citation I specifically — not all Citation shops maintain expertise in the oldest 500-series.

Buy it if: you want the lowest-cost entry into jet ownership with a mature support base and a documented, cared-for history. The Citation II (550) offers substantially more range, speed and cabin — for many buyers, the price delta between a good Citation I and an entry Citation II makes the step worthwhile. Skip the Citation I if support access in your region is limited.