What is the difference between a 100-hour and an annual?

The scope is the same (14 CFR Part 43 Appendix D). The 100-hour is required only for aircraft that carry passengers for hire or are provided for flight instruction for hire; most aircraft need an annual every 12 calendar months. An annual counts as a 100-hour. A 100-hour does not count as an annual unless an IA performs it and signs it off as an annual.

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.

100-Hour Inspections

The same discipline.
A tighter cadence.

A 100-hour inspection has the same scope as an annual, performed every 100 hours of time in service on aircraft that carry passengers for hire or are provided for flight instruction for hire (14 CFR 91.409(b)). Same checklist, same photography, same written report.

Request a Quote →Scope of Work

Scope of Work

What the inspection
actually covers.

The scope below is our standard 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.

Pricing

A 100-hour covers the same Part 43 Appendix D scope as an annual, so it usually costs about the same. We estimate your specific aircraft, and you approve the estimate before work starts. Program aircraft can be put on a combined annual and 100-hour schedule.

Turnaround

Standard turnaround is 3–5 business days. Commercial operators with known schedules can reserve dedicated bench time in advance.

Scheduling

Scheduling is time-sensitive by definition: the 100-hour clock starts running. Book before the aircraft reaches 95 hours so it can stay in for-hire and instruction service; the 10-hour allowance only covers the flight to the shop. Recurring operators can set standing inspection slots.

Owner Questions

Frequently asked.

What is the difference between a 100-hour and an annual?: The scope is the same (14 CFR Part 43 Appendix D). The 100-hour is required only for aircraft that carry passengers for hire or are provided for flight instruction for hire; most aircraft need an annual every 12 calendar months. An annual counts as a 100-hour. A 100-hour does not count as an annual unless an IA performs it and signs it off as an annual.
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.

Owners also ask

Next Step

Your aircraft deserves
an accountable wingman.

Call or send your tail number. We answer within one business day.

Contact Wingman →Managed Program

The same discipline.A tighter cadence.

What the inspectionactually covers.