Built for Skyhawk owners

Every annual, 100-hour, AD, and overhaul for your Cessna 172, tracked in one place

Maggneto is the maintenance app for your Cessna 172 Skyhawk. Scan your logbooks in so your whole maintenance history lives in your pocket, searchable and easy to reference. Then set up tracking for the items that matter, the annual, the 100-hour, recurring ADs, the engine overhaul, with custom intervals that count down from your real hours and dates.

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The Maggneto dashboard showing a Cessna 172 Skyhawk with its maintenance items and a clear status for each

The records that keep your Cessna 172 flying shouldn't live in a shoebox

The deadline you can't see is the one that gets you

Your records live in a binder, a shoebox of PDFs, and a few dates you're trusting yourself to remember. The annual, the transponder check, a recurring AD: any one of them can quietly slip past while you're busy flying, and you usually find out at the worst possible time.

If it's earning its keep, the clock runs fast

Plenty of 172s fly on a club line or in instruction, so the 100-hour comes due constantly and the hours pile up across a lot of different pilots. When everyone flies and nobody owns the logbook, the count is easy to lose.

The resale haircut

The 172 is the most trusted trainer ever built, but a specific airframe still sells on its records. A clean, complete, searchable history holds the value. A shoebox of loose paperwork gets discounted by buyers and their pre-buy mechanics.

How Maggneto works

  1. 1

    Scan your logbooks in

    Snap photos of your existing airframe and engine logs so your whole maintenance history lives in your pocket, searchable and easy to reference instead of buried in a binder or a folder of PDFs.

  2. 2

    Set up your tracking, your way

    Add the items you want to stay ahead of, from the annual to the 100-hour to oil to recurring ADs, plus any custom items, each with intervals that fit your airplane. It's fully customizable, so you track exactly what matters for your tail number.

  3. 3

    Stay ahead, and keep the record

    Log a flight or an oil check in a few seconds and the countdowns update themselves. When you sell, you hand the buyer a clean, complete record that helps the airplane hold its value.

What a Cessna 172 Skyhawk owner tracks

These are the items most Cessna 172 owners have to stay on top of. Intervals vary by model, year, engine, and how the airplane is used, so treat these as typical and check them against your own aircraft's documents. For each one, here's how Maggneto keeps it from sneaking up on you.

Maggneto shows each item as:Up to dateDue soonOverdue

  1. 1.Annual inspection

    Every 12 calendar monthsCalendar

    Every certified 172 needs an annual inspection on a fixed calendar cycle, regardless of how many hours it flew that year.

    In Maggneto: Maggneto counts the annual down by date and shows a clear status (Up to date, Due soon, or Overdue) so you book the shop before the month runs out.

  2. 2.100-hour inspection

    Every 100 hours in serviceHours

    If your 172 is used for hire or for flight instruction, it needs a 100-hour inspection every 100 hours of time in service. On a busy trainer the interval comes around fast and has to be tracked to the tenth.

    In Maggneto: Maggneto counts the 100-hour down from your real tach time, so a hard-flown airplane stays ahead of the next inspection instead of going past it.

  3. 3.Oil & filter change

    Every 50 hours or 4 monthsHours or calendar

    Lycoming recommends oil and filter changes on a regular hours-or-calendar cycle, and oil is the cheapest, most honest read you'll get on engine health.

    In Maggneto: Maggneto counts the interval from your real tach time and turns your oil checks into a burn rate in quarts per hour, so a creeping consumption trend shows up early.

  4. 4.Engine overhaul (TBO)

    ~2,000 hours or 12 years (typical)Hours or calendar

    The Lycoming O-320 or IO-360 in a 172 carries a published time between overhauls in both hours and years. It's the biggest single number on the airframe, and on a trainer the hours add up quickly.

    In Maggneto: Maggneto tracks the engine on its own time with a progress bar toward TBO, so you can see the overhaul coming from a long way off and plan for it.

  5. 5.Airworthiness Directives & Service Bulletins

    Recurring, variesVaries

    Cessna 100-series aircraft carry recurring ADs, including the well-known recurring seat-rail and seat-stop inspection that keeps the seats from sliding on the rails. Which ones apply depends on your serial number and equipment.

    In Maggneto: Maggneto tracks recurring ADs, including the seat-rail inspection, as scheduled items with a countdown and a record of when each was last addressed.

  6. 6.Transponder, altimeter & pitot-static checks

    Every 24 calendar monthsCalendar

    The FAA requires transponder (91.413) and altimeter/static system (91.411) checks every two years for IFR flight, which matters for any 172 used for instrument training or IFR travel.

    In Maggneto: Maggneto tracks the 24-month checks as dated items so the certification never quietly lapses between inspections.

  7. 7.Magneto inspection

    Every 500 hours (typical)Hours

    Magnetos carry a recommended internal inspection on an hours cycle, and a tired magneto is a common cause of a rough run-up and a scrubbed lesson.

    In Maggneto: Maggneto counts the magneto inspection down from your real engine hours alongside the rest of your recurring items.

  8. 8.Vacuum system & gyros

    Condition, plus pump service lifeCondition

    If your 172 still runs vacuum-driven gyros rather than a glass panel, the dry vacuum pump has a service life and tends to fail without much warning.

    In Maggneto: Track the vacuum pump age and gyro service as recurring items so an aging pump gets replaced before it quits.

  9. 9.Fuel system & reservoir

    Inspection and periodic serviceCondition

    The 172's fuel system, including the tanks or bladders, sumps, and reservoir, needs periodic inspection, and water or sediment in the fuel is a recurring item to stay ahead of.

    In Maggneto: Add fuel-system inspections as recurring items so the parts of the airplane you rely on every flight stay on the schedule.

  10. 10.ELT, batteries, brakes & tires

    Inspection and replacement on their own cyclesCalendar or condition

    The emergency locator transmitter needs periodic inspection and a battery on a fixed cycle, and the ship's battery, brakes, and tires are wear items that don't run on a clean clock.

    In Maggneto: Keep the ELT, batteries, and wear items on the schedule so the small stuff gets handled before it takes the airplane off the line.

These are some of the most common items a Cessna 172 owner tracks, not a complete list. Every airplane carries more depending on its equipment, avionics, modifications, and service history, and your mechanic and the aircraft's maintenance documents are the final word on what applies to your tail number. Maggneto lets you add and track as many custom items as your airplane needs.

What matters most for your Cessna 172 Skyhawk

Maintenance Scheduling

Annuals, 100-hours, ELT, transponder, oil changes. Track every recurring item by date or by hours with a clear status and a countdown to the next due date.

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Hobbs & Tach Tracking

Log Hobbs and tach time in seconds and Maggneto times every record to the right hours, so your whole history stays accurate and your next inspection counts down from real numbers.

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AD Tracking

Track airworthiness directives against your airframe, engine, and prop. Maggneto keeps the recurring ones in front of you with a countdown to the next due date.

See how it works →

Oil Tracking & Burn Rate

Record oil checks and top-offs and Maggneto calculates your burn rate in quarts per hour automatically, so a creeping consumption trend shows up long before it becomes a top-end overhaul.

See how it works →

The 100-hour you saw coming

Your scheduler tells you who is flying. Maggneto tells you the airplane will hit its 100-hour by Friday, so you book the maintenance for Thursday morning and keep it on the line through the weekend. The annual is up to date, the seat-rail AD is logged, and after each flight whoever flew last logs the tach in seconds. Nothing about the airplane is a mystery, and nothing sneaks up on you.

A 172 earns its keep when it stays available. Maggneto keeps every date and every hour in front of you, and turns your records into something worth real money when you sell.

Cessna 172 Skyhawk maintenance: common questions

How often does a Cessna 172 need an annual inspection?
Every certified Cessna 172 requires an annual inspection every 12 calendar months, regardless of how many hours it flew that year.
When does a Cessna 172 need a 100-hour inspection?
A 172 used for hire or for flight instruction needs a 100-hour inspection every 100 hours of time in service. An aircraft flown only for personal use does not require the 100-hour, but it still needs the annual.
What is the TBO on a Cessna 172 engine?
The Lycoming O-320 or IO-360 in a 172 typically carries a published time between overhauls of roughly 2,000 hours or 12 years, whichever comes first. Actual overhaul timing depends on the specific engine and how it is operated.
What is the Cessna seat rail AD?
Cessna 100-series aircraft are subject to a recurring inspection of the seat rails and seat-stop hardware to make sure the seats lock in position and cannot slide on the rails. It recurs on a set interval, so it is best tracked as a recurring item rather than remembered between annuals.
What maintenance records do I need to sell a Cessna 172?
Buyers and their pre-buy mechanics want complete, organized records: airframe and engine logs, AD compliance, the most recent annual and 100-hour if applicable, and any major work. Clean, searchable records speed the sale; a disorganized record drags out negotiations and lowers the price.
Can Maggneto track the 100-hour and the seat-rail AD?
Yes. Maggneto tracks the annual, the 100-hour, recurring ADs including the seat-rail inspection, oil changes, engine TBO, transponder and pitot-static checks, and your own custom items, each with a clear status and a countdown to the next due date.

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