The Aircraft LedgerCheck a tail

Tail record, Gulfstream GIV, United States register

N615TT: how this Gulfstream GIV is flown

A GIV 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 GIV.

01

How N615TT 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

2.9

in the months it flew

Estimated hours

≈60

in the twelve months, from time in the air

02

Month by month.

Its busiest month was April 2026, with 7 flights.

Tracked flights

Its busiest month was April 2026, with 7 flights. It did not fly in May 2026. 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 N615TT, 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 620 tracked GIVs. Every dot is one aircraft; the gold one is N615TT.

Chapter 1

Fatigue

Harsher than its type

How short were its legs?

Utilization isn’t graded for N615TT: 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. 12th percentile

    1.5 : 1middle GIV 2.0 : 1

  • Short hops13th percentile

    20%middle GIV 33%

  • Leg length53rd percentile

    599 nmmiddle GIV 580 nm

How its legs split

Share of N615TT’s legs by length, nm, in the twelve months

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

04

What only the report shows.

The fleet is shown, and whether N615TT sits inside its middle half. Its grades and values are in the full report.

Chapter 2

Corrosion

Salt air, middle GIV: 3%

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 GIV: 35%

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

N615TT sits inside the middle half. Its grade and exact place are in the full report.

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Chapter 4

Utilization

Flights a month, middle GIV: 5.6

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 N615TT.

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

TailCheck report

N615TT, Gulfstream GIV

$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 GIVs? Put it on a Spotlight board with up to four others. Included with Unlimited, $995 a month.

06

Questions about N615TT.

Cite this data

The Aircraft Ledger. “N615TT: how this Gulfstream GIV is flown.” Data through 31 Jul 2026. theaircraftledger.com/aircraft/n615tt

How many hours does N615TT fly a year?

About 60 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 N615TT flown?

N615TT 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 N615TT fly internationally?

1 of its 37 tracked flights in the 12 months to 31 Jul 2026, 3%, crossed a border.

When did N615TT 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 N615TT 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 N615TT?

All four graded chapters (Fatigue, Corrosion, Engines and brakes, and Utilization), each against the tracked GIVs, 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 Gulfstream GIVBuyer’s guideWhat to check before buying a used GIVSpotlightCompare N615TT with other GIVs

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.