100-Hour Inspections
The same discipline.
A tighter cadence.
A 100-hour inspection is identical in scope to an annual, but performed against a running-hour schedule for aircraft flown for hire or in commercial operation. Same checklist, same photography, same written report.
Scope of Work
What the inspection
actually covers.
The scope below represents our standard published checklist. Additional items are added based on airframe, operating environment, and findings surfaced during the inspection.
Airframe Inspection
Full Part 43 Appendix D-equivalent airframe scope: controls, hinges, bonding, skin, gear, wheels, tires, and brakes.
Powerplant Condition
Compression check, borescope image capture for trend monitoring, oil filter cut and analysis, and ignition timing verification.
Operational Systems
Fuel system, electrical, pitot-static currency, transponder correlation, and ELT self-test with battery expiration verification.
Trend Monitoring
Compression and borescope images are filed against prior inspections. Trends, not point-in-time readings, drive overhaul timing decisions.
AD Revisit
Airworthiness directive status reconfirmed at every 100-hour; new ADs since last inspection are researched, evaluated, and complied with.
Discrepancy Report
Written, photographed findings with recommended disposition. Items not affecting airworthiness are documented for future attention, not silently deferred.
Owner Questions
Frequently asked.
- What is the difference between a 100-hour and an annual?
- Scope is nearly identical. The 100-hour is required for aircraft operated for hire; the annual is required for all aircraft. A 100-hour performed by an IA can substitute for an annual; the reverse is not true.
- Can the 100-hour run over?
- FAR 91.409 permits up to 10 hours of overrun for the purpose of reaching an inspection facility, but only if the excess is included in the next inspection interval. We will help you plan the reposition flight.
- How do you handle trend monitoring?
- Borescope imagery and compression numbers are stored in the aircraft's digital file and compared across inspections. Deterioration patterns surface long before a catastrophic event.
- Do you perform 100-hours on transient aircraft?
- Yes, provided we can do the inspection justice on your timeline. We will tell you before we commit.
Next Step
Your aircraft deserves
an accountable wingman.
Schedule an inspection, tour the facility, or ask about the Managed Maintenance Program. We respond to every inquiry within one business day.