N591QX

Summary written from the figures in the sections below; every number traces to a chart or table.

Detected flights by month

• About 223 observed hours a year

  FAA records list a TSIO-550-K; verify the installed engine and its serial number from the data plate and logbooks. Continental SIL98-9E: 2,000 h (2,200 h for engines S/N 1006000 and later), or 12 calendar years. Pace sets how quickly a mid-time engine reaches it.

  Ask: Engine model and serial from the data plate; time since new or overhaul, and whether the last overhaul was a factory rebuild, factory overhaul or field overhaul (it changes the TBO); oil analysis and compression history.

• 29 flights in the flight levels

  Sustained high-altitude cruise works the turbocharger, exhaust and oxygen system.

  Ask: Turbo and exhaust inspection records; oxygen bottle hydrostatic test date.

• 120 landings above 5,000 ft

  Higher true airspeed at touchdown means more brake and tire wear and longer takeoff rolls.

  Ask: Brake and tire replacement history.

• 9 island legs

  Salt exposure can start corrosion in landing gear, flap tracks and fasteners if the airplane isn't washed afterward.

  Ask: Post-trip washing; corrosion findings at the last annual; where it's hangared.

• International legs (the Bahamas)

  Border crossings require eAPIS filings and a current CBP decal.

  Ask: CBP user-fee decal; eAPIS records; any maintenance done outside the U.S.

• 43-day parked stretch from 9 Nov 2025

  Long idle periods and major maintenance both show up this way.

  Ask: What happened during the stretch; annual sign-off date and squawk list.

• 2016 airframe with a ballistic parachute

  CAPS canopy repack and rocket motor each run on a 10-year life from their own manufacture dates. For this airframe the first service falls around 2026.

  Ask: Date of the last parachute repack and rocket replacement. A pending one is a large bill.