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Tail record, Cessna Citation CJ4, Japan register

JA01BJ: how this Cessna Citation CJ4 is flown

A Citation CJ4 on short legs: more landings for its hours than three quarters of its type.

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Figures are for the twelve months to 31 Jul 2026; named aircraft are shown a week behind. Grades compare its record since 1 Jan 2025 with every tracked Citation CJ4.

01

How JA01BJ compares.

31 tracked flights in the twelve months to 31 Jul 2026.

Tracked flights

31

in the twelve months, about 3 a month

Days flown a month

2.4

in the months it flew

Estimated hours

≈25

in the twelve months, from time in the air

02

Month by month.

Its busiest month was May 2026, with 10 flights.

Tracked flights

Its busiest month was May 2026, with 10 flights. It did not fly in August 2025. The record has 21 tracking gaps, so about one flight in 1 may be missing and every count is a minimum.

Source: The Aircraft Ledger, flight data for JA01BJ, the twelve months to 31 Jul 2026. Flight counts only: airports and exact dates are left out of this page.

03

The free chapter.

Each measure against all 439 tracked Citation CJ4s. Every dot is one aircraft; the gold one is JA01BJ.

Chapter 1

Fatigue

Harsher than its type

How short were its legs?

Utilization isn’t graded for JA01BJ: too few of its flights were tracked to count its use fairly, in the full report too. So its free chapter here is Fatigue, which doesn’t depend on catching every flight.

Short legs put more pressurization cycles on the structure for the same time in the air. Worth checking its cycle-based inspection limits before a pre-buy.

  • Hours per landingLead measure. 8th percentile

    0.9 : 1middle Citation CJ4 1.3 : 1

  • Short hops86th percentile

    64%middle Citation CJ4 45%

  • Leg length5th percentile

    147 nmmiddle Citation CJ4 345 nm

How its legs split

Share of JA01BJ’s legs by length, nm, in the twelve months

Harsher means harder on the aircraft than three quarters of Citation CJ4s; typical is the middle half. Percentiles compare this aircraft with every tracked Citation CJ4, over its record since 1 Jan 2025.

04

What only the report shows.

The fleet is shown, and whether JA01BJ sits inside its middle half. Its grades and values are in the full report.

Chapter 2

Corrosion

Salt air, middle Citation CJ4: 0%

Also graded: damp air, freeze–thaw, near the coast and moisture in the air.

Not graded: not enough data.

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Chapter 3

Engines and brakes

Short runways, middle Citation CJ4: 2%

Also graded: hot, high takeoffs; density altitude; dust and dry climate.

JA01BJ sits outside the middle half, on one side or the other. Its grade and exact place are in the full report.

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Chapter 4

Utilization

Flights a month, middle Citation CJ4: 5.0

Also graded: days flown a month and estimated hours a year.

Not graded: too few of its flights were tracked.

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05

The full report on JA01BJ.

All four chapters, every flight since January 2025 leg by leg, and the one thing to ask the seller.

TailCheck report

JA01BJ, Cessna Citation CJ4

$395one aircraft

  • All four chapters, graded
  • The one thing to ask, with records to request
  • Every flight since January 2025, leg by leg
  • Its weekly and seasonal rhythm
  • PDF, CSV and a share link; open for three months, kept up to date
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Weighing it against other Citation CJ4s? Put it on a Spotlight board with up to four others. Included with Unlimited, $995 a month.

06

Questions about JA01BJ.

Cite this data

The Aircraft Ledger. “JA01BJ: how this Cessna Citation CJ4 is flown.” Data through 31 Jul 2026. theaircraftledger.com/aircraft/ja01bj

How many hours does JA01BJ fly a year?

About 25 estimated hours in the 12 months to 31 Jul 2026, across 31 tracked flights. Hours are estimated from time in the air, so the logbook has the exact figure.

How often is JA01BJ flown?

JA01BJ made 31 tracked flights in the 12 months to 31 Jul 2026, about 3 a month, and flew on about 2 days in each month it flew.

Does JA01BJ fly internationally?

3 of its 31 tracked flights in the 12 months to 31 Jul 2026, 10%, crossed a border.

When did JA01BJ last fly?

It was last tracked in July 2026. We publish an aircraft’s flights seven days after they happen, and show them by month only.

Why don’t you show which airports JA01BJ uses?

We leave out airports, bases and exact dates on purpose. We show how an aircraft has been used, not where it goes.

What’s in the full TailCheck report for JA01BJ?

All four graded chapters (Fatigue, Corrosion, Engines and brakes, and Utilization), each against the tracked Citation CJ4s, 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.

Fleet statisticsWhat’s normal for a Cessna Citation CJ4SpotlightCompare JA01BJ with other Citation CJ4s

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.