Tail record, Cessna Citation SII, United States register
1 tracked flights in the 12 months to 31 Oct 2026, on about 1 days a month and an estimated 0 hours in the air.
01
1 tracked flights in the twelve months to 31 Oct 2026.
Tracked flights
1
in the twelve months, about 0 a month
Days flown a month
1.0
in the months it flew
Estimated hours
≈0
in the twelve months, from time in the air
02
Its busiest month was September 2026, with 1 flights.
Its busiest month was September 2026, with 1 flights. It did not fly in November 2025. There were no tracking gaps, so the record is close to complete.
03
Each measure against all 353 tracked Citation SIIs. The shaded band is the middle half; the gold dot is N121KM.
Chapter 4
Not graded
How hard has it been used?
Not compared: no percentile for this aircraft yet.
Flights a monthLead measure. Not compared: no percentile for this aircraft yet.
3.8Not compared
Days flown a monthNot compared: no percentile for this aircraft yet.
2.8 dNot compared
Estimated hours a yearNot compared: no percentile for this aircraft yet.
≈68 hrNot compared
Harsher means harder on the aircraft than three quarters of Citation SIIs; typical is the middle half. Percentiles compare this aircraft with every tracked Citation SII, over its record since 4 Nov 2024.
04
The fleet is shown, and whether N121KM sits inside its middle half. Its grades and values are in the full report.
Chapter 1
Hours per landing, middle Citation SII: 1.3 : 1
Also graded: short hops. Leg length is shown as context.
Not graded: not enough data.
Unlock this chapterChapter 2
Salt air, middle Citation SII: 0%
Also graded: damp air, freeze–thaw, near the coast and moisture in the air.
Not graded: not enough data.
Unlock this chapterChapter 3
Short runways, middle Citation SII: 2%
Also graded: hot, high takeoffs; density altitude; dust and dry climate.
Not graded: not enough data.
Unlock this chapter05
All four chapters, every flight since January 2025 leg by leg, and the one thing to ask the seller.
Page one
Every chapter has this table, with a note on any assumption behind it.
days
Ask for
N121KM, Cessna Citation SII
$395one aircraft
Weighing it against other Citation SIIs? Put it on a Spotlight board with up to four others. Included with Unlimited, $995 a month.
06
The Aircraft Ledger. “N121KM: how this Cessna Citation SII is flown.” Data through 31 Oct 2026. theaircraftledger.com/aircraft/n121km
About 0 estimated hours in the 12 months to 31 Oct 2026, across 1 tracked flights. Hours are estimated from time in the air, so the logbook has the exact figure.
N121KM made 1 tracked flights in the 12 months to 31 Oct 2026, about 0 a month, and flew on about 1 days in each month it flew.
It was last tracked in September 2026. We publish an aircraft’s flights seven days after they happen, and show them by month only.
We leave out airports, bases and exact dates on purpose. We show how an aircraft has been used, not where it goes.
All four graded chapters (Fatigue, Corrosion, Engines and brakes, and Utilization), each against the tracked Citation SIIs, plus the operational summary and operating rhythm, as a PDF, CSV and share link. It costs $395, or $995 a month for unlimited reports and Spotlight.
Method: flight data, every count a minimum. Estimated hours from time in the air. About our data
Owners and operators can ask us not to publish an aircraft. Data policy and opt-out
Not a substitute for a pre-purchase inspection or records review. TailCheck shows how an aircraft has been used, not its condition.