Cessna 1sp (C501)
i
ICAO C501 Small

Cessna 1sp

Twin Jet· 208 globally registered

The Cessna Citation I, introduced in 1972 as the Citation 500, was the production version of the revolutionary Citation prototype that launched the light business jet category. Cessna's gamble on a straight-wing, modestly-powered twin-jet designed for owner-pilots rather than corporate flight departments proved transformative. The Citation became the best-selling business jet family in history, with over 8,000 delivered across all variants. The original Citation I prioritized simplicity and economy over raw speed, cruising at 340 knots with a range of 1,300 nautical miles, making it accessible to operators transitioning from piston twins. Powered by two Pratt & Whitney JT15D-1A turbofans producing 2,200 pounds of thrust each, the Citation I could operate from runways as short as 3,000 feet and climb directly to FL410, capabilities that opened thousands of airports to jet traffic for the first time. Its docile handling characteristics and relatively low operating costs made it a favorite of small corporations, air ambulance operators, and freight carriers. The type remained in production until 1985, with 689 built, and many still fly today in cargo, charter, and private roles. The Citation I established design principles (high wings for cabin space, straight wings for short-field performance, and twin Williams or P&W engines in the 2,000-3,000 pound thrust class) that Cessna refined through the Citation II, Bravo, CJ series, and beyond. Its success proved that a market existed below the traditional midsize jet segment, a lesson that reshaped the entire business aviation industry. SkyMeter has tracked 178 flights across 63 airframes and 57 operators, with FLYING 5 LLC the largest observed operator.

ACTIVE AIRFRAMES
63
last 7 days
🏢
OPERATORS
57
unique airlines
📊
FLIGHTS
178
tracked
AVG DURATION
1h 19m
per flight
INCIDENT RATE
5.6%
10 flagged

Safety in context

The incident rate counts flights with ANY safety event detected by SkyMeter: go-arounds (a routine response, not a failure), unstable-approach gate flags (advisory thresholds), rejected takeoffs (the system working as designed), and runway events. It is NOT an accident rate or fatality rate. For accident statistics, refer to the NTSB Aviation Accident Database (USA) or the Aviation Safety Network. See methodology for what each event type measures.

Performance

Speed envelope & approach

Vref
107 kt
Vref range
Vmo
305 kt
Mmo
0.72
Vs1 (clean)
86 kt
Vs0 (landing)
79 kt
Vfe
165 kt
Approach category
B

Dimensions

Airframe geometry

Wingspan
47 ft
Length
44 ft
Tail height
14 ft
Wheelbase
18 ft
Gear width
13 ft
Wake category
Light

Weight & identification

Operating limits

MTOW
11,850 lb
MALW
11,350 lb
Manufacturer model
Cessna 1SP
FAA designator
C501
Registered
208

Safety profile

Flagged flights · last 7 days

Family

Related variants

1

Recent incidents

Flagged flights of C501

20
08/28/2026
3h 59m
△ Low approach-stability score
08/28/2026
39m
△ Low approach-stability score
08/26/2026
42m
△ Low approach-stability score
08/25/2026
2h 6m
△ Low approach-stability score
08/24/2026
32m
△ Low approach-stability score
08/24/2026
29m
△ Low approach-stability score
08/23/2026
2h 34m
△ Low approach-stability score
08/23/2026
1h 7m
△ Low approach-stability score
08/21/2026
32m
△ Low approach-stability score
08/21/2026
1h 44m
△ Low approach-stability score

Recent flights

Real flights of C501 · airborne ≥ 20 min

30
08/28/2026
40m
No alerts
08/28/2026
28m
No alerts
08/28/2026
1h 39m
No alerts
08/28/2026
1h 2m
No alerts
08/28/2026
3h 59m
△ Low approach-stability score
08/28/2026
38m
No alerts
08/28/2026
5h 24m
No alerts
08/28/2026
2h 4m
No alerts
08/28/2026
37m
No alerts
08/28/2026
39m
△ Low approach-stability score
08/28/2026
1h 55m
No alerts
08/28/2026
3h 4m
No alerts
08/28/2026
4h 25m
No alerts
08/28/2026
1h 44m
No alerts
08/28/2026
22m
No alerts
08/28/2026
23m
No alerts
08/28/2026
1h 57m
No alerts
08/28/2026
35m
No alerts
08/28/2026
53m
No alerts
08/28/2026
1h 12m
No alerts
08/28/2026
1h 25m
No alerts
08/28/2026
2h 17m
No alerts
08/28/2026
1h 53m
No alerts
08/28/2026
22m
No alerts
08/28/2026
30m
No alerts
08/28/2026
6h 5m
No alerts
08/28/2026
2h 49m
No alerts
08/28/2026
1h 8m
No alerts
08/28/2026
23m
No alerts
08/28/2026
45m
No alerts
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© SkyMeter · All flight data subject to ODbL attribution · Tracking window: 7 days (free tier)