The Aircraft LedgerCheck a tail

Tail record, Cessna Citation CJ4, United States register

N18MM: how this Cessna Citation CJ4 is flown

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

Unlock the full report, $395See a sample report

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 N18MM compares.

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

Tracked flights

37

in the twelve months, about 3 a month

Days flown a month

2.7

in the months it flew

Estimated hours

≈57

in the twelve months, from time in the air

02

Month by month.

Its busiest month was March 2026, with 7 flights.

Tracked flights

Its busiest month was March 2026, with 7 flights. It did not fly in December 2025. The record has 23 tracking gaps, so about one flight in 2 may be missing and every count is a minimum.

Source: The Aircraft Ledger, flight data for N18MM, 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 N18MM.

Chapter 1

Fatigue

Gentler than its type

How short were its legs?

Utilization isn’t graded for N18MM: 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.

More hours for each landing, so fewer pressurization cycles for its time in the air.

  • Hours per landingLead measure. 85th percentile

    1.7 : 1middle Citation CJ4 1.3 : 1

  • Short hops36th percentile

    38%middle Citation CJ4 45%

  • Leg length75th percentile

    486 nmmiddle Citation CJ4 345 nm

How its legs split

Share of N18MM’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 N18MM 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.

Unlock this chapter

Chapter 3

Engines and brakes

Short runways, middle Citation CJ4: 2%

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

N18MM sits inside the middle half. Its grade and exact place are in the full report.

Unlock this chapter

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.

Unlock this chapter

05

The full report on N18MM.

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

TailCheck report

N18MM, 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
Unlock the full report

See a sample report first

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 N18MM.

Cite this data

The Aircraft Ledger. “N18MM: how this Cessna Citation CJ4 is flown.” Data through 31 Jul 2026. theaircraftledger.com/aircraft/n18mm

How many hours does N18MM fly a year?

About 57 estimated hours in the 12 months to 31 Jul 2026, across 37 tracked flights. Hours are estimated from time in the air, so the logbook has the exact figure.

How often is N18MM flown?

N18MM made 37 tracked flights in the 12 months to 31 Jul 2026, about 3 a month, and flew on about 3 days in each month it flew.

Does N18MM fly internationally?

None of its 37 tracked flights in the 12 months to 31 Jul 2026 crossed a border.

When did N18MM 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 N18MM 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 N18MM?

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 N18MM 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.