Guide for Pilots: All About Aerolo

1. 1Create your account. On the sign-in page choose “Create one” and enter your name, email and a password of at least 8 characters. By creating an account you accept the Terms and the Privacy policy. Aerolo sends a confirmation email: open the link in it, then sign in.
2. 2Set your home airfield. In Settings type its 4-letter ICAO code (for example LKPR) and save. The Cockpit shows its weather, and Weather and NOTAM list it first.
3. 3Add your documents in Currency. Press Add and pick your medical, licence, ratings and, if you follow FAA rules, your flight review. Copy the expiry dates from the real documents. They drive the status banner in the Cockpit.
4. 4Enter what you flew before Aerolo. If you have a paper logbook, open Logbook, then Previous experience, and enter your totals “valid up to (and including)” a date. Choose the day before the first flight you will log in Aerolo.
5. 5Add flights. Press Add flight. Choose an aircraft, or “+ New aircraft” and give its registration, make and model, and engine type. If your recent flights are in a spreadsheet, use Import CSV instead (see the Logbook section).
6. 6Follow your airfields. In Weather and in NOTAM type the ICAO codes of the airfields you fly to, up to the limit of your plan. The two lists are separate.
7. 7Optional, for owners and renters: in the Hangar enter the airframe hours of your aircraft and the date they are valid for. In Maintenance add the annual inspection, insurance and airworthiness review. In Fuel log your fills.
8. 8Optional, for study: open Learn, add the starter cards, and review a few every day.

Prices are per account and per month, excluding VAT; VAT is calculated at checkout from your country. For the current prices see the Pricing page. Payments, invoices and VAT are handled by Lemon Squeezy as seller of record, and your card details never reach Aerolo.

Some screens call the aircraft features the Aircraft add-on and the unlimited Learn deck the ATPL pack. Today they are not sold separately: a Co-Pilot subscription gives you both. Co-Pilot is added on top of Pilot.

• You keep your data. When a trial or a plan ends, everything you saved stays in your account. You can still read, edit, delete and export it.
• You cannot add new entries. Without the plan that covers a feature you cannot add new flights, simulator sessions, aircraft, flashcards, maintenance items, work orders or fuel entries. Your documents in Currency and your previous-experience totals stay editable.
• Extra airfields are hidden, not deleted. If your plan allows fewer airfields than you saved, the ones beyond the limit are not shown. They come back when you have the plan again.
• Cancel any time in Settings, in the Plan card, with Manage subscription. You keep the plan until the end of the period you paid for.
• Limits can be off. Aerolo can run with plan limits switched off; then every feature is open, and the banner and lock icons do not appear.

The Cockpit is a summary of the other screens and holds no data of its own. It has five parts, from top to bottom.

• The status banner. One of four verdicts, worked out from the expiry dates of your documents (see Currency). Below it are the reasons, for example “Class 2 medical expires in 12 days”.
• Expiring next. The three documents with the earliest expiry dates, with days left or days ago. Documents without an expiry date are left out.
• Your totals. Total time, PIC time, and time flown in the last 90 days.
• Home airfield weather. The METAR and TAF of the airfield you set in Settings.
• Last flights. Your three most recent entries.

The Logbook is the heart of Aerolo. The totals in the Cockpit, the recency meters in Currency and the airframe hours in the Hangar all come from the flights you enter here. Times are UTC and dates are shown day/month/year.

Adding a flight. Press Add flight and fill in the form. Fields are grouped like this:

Aerolo refuses an entry that cannot be right: a total of zero, night, IFR or function time longer than the total, approaches without IFR time, or no aircraft. The message says what to fix.

The strips. Each flight is drawn as a paper strip, like an ATC strip. On a wide screen the columns follow the AMC1 FCL.050 numbering: date (1), departure (2), arrival (3), aircraft (4), SP/MP (5), total (6), PIC and landings day/night (7, 8), and the time in your function (10). A second line shows night time, IFR time with approaches, holding and tracking, and remarks. On a phone each strip is three compact lines. The colour of a strip shows the function with the most time in that entry:

Totals. Six boxes above the strips show Total time, PIC, Dual, Night, IFR and Landings. They are your previous-experience totals plus every flight dated after the previous-experience date. Simulator sessions are not included.

Editing and deleting. Use the pencil to edit a flight and the bin to delete it (you are asked to confirm). A flight an instructor has signed is locked and shows a tick: it can no longer be edited or deleted.

Simulator sessions (FSTD). Below the flights is a separate list for time on a flight simulation training device. Add a session with its date, duration, device type (FFS, FTD, FNPT II, FNPT I, BITD, or Other with a name), an optional qualification number from the device certificate, and remarks. A session cannot be dated in the future or be longer than 24 hours. As in the EASA logbook, simulator time is kept apart from flight time: it is not added to your totals, not used by Currency, and not counted in Hangar hours. It appears on its own page of the PDF export.

Previous experience. If you flew before Aerolo, open Previous experience and enter the totals from your paper logbook: total, PIC, dual, co-pilot, instructor, single-pilot single-engine, single-pilot multi-engine, multi-pilot, night, IFR, and day and night landings. Then give the date they are valid up to and including. Totals are that balance plus the flights dated after it. Flights dated on or before that date stay visible but are not counted twice. Because these totals carry no dates, they cannot count toward the 90-day or 12-month windows in Currency.

1. 1Open the Logbook and press Import CSV (on a narrow screen it is in the More menu), then choose the file. Use the file from Export CSV or a spreadsheet saved as CSV. The file may be up to 2 MB and 5,000 rows, with a header row and commas, semicolons or tabs between columns.
2. 2Check the column mapping. Aerolo matches columns by their header names, for example date, from, departure, registration, total, landings. Fix any column it did not recognise with the drop-down.
3. 3Read the preview. It counts rows that are ready, rows already in the Logbook (skipped) and rows with errors (skipped), and shows the line number and the reason for each problem.
4. 4Press Import. All the ready rows are saved in one go: either every flight is saved or none is.

• Required: date, departure place, arrival place, and a total time (or both block times, from which the total is worked out). Dates are read as day/month/year; 2026-10-07 also works.
• Duplicates are rows with the same date, route, registration, total time and departure time as a flight you already have. They are skipped, so importing the same file twice is harmless.
• New registrations create new aircraft. If the file has no engine column they are set to single-engine, so check the type afterwards. A row with no registration is saved without an aircraft: it counts in your totals but not as single- or multi-engine time, and not in Hangar hours.
• Gaps are filled sensibly and flagged: no landings means 1 day landing; no function time with the PIC name “SELF” (or empty) is counted as PIC time; with another PIC name it is left without a function.
• Rows dated on or before your previous-experience date are shown with a warning and are not counted in totals.

Export. Export PDF produces an A4 landscape logbook in the EASA FCL.050 column layout, oldest flight first, 18 flights per page. At the bottom of each page are the rows This page, Previous pages (on the first page, Carried over from previous experience) and Total to date. Simulator sessions follow on their own page. Export CSV writes one row per flight with 23 columns (the same names the importer reads, so you can re-import it), in UTF-8 that opens correctly in Excel. Both are built in your browser from the data on screen.

Instructor signatures. An instructor can sign a flight or a simulator session without having an account.

1. 1Press the pen icon on the entry (“Request instructor signature”). Aerolo creates a one-time link and shows it. Copy it and send it to your instructor.
2. 2The instructor opens the link and sees a read-only summary: date, route, aircraft, total, dual, instructor time, night, IFR, landings and remarks (for a session: device, qualification number, total, remarks).
3. 3The instructor types their full name and licence or certificate number, ticks the confirmation and presses Sign entry.
4. 4The entry is now locked in your logbook with “Signed by name (licence)”. It cannot be edited or deleted, and the signature cannot be undone from the app.

• The link works once and expires after 30 days. A new link for the same entry replaces the old one, and you can revoke it from the same dialog.
• If you edit the entry after creating the link, the link stops working (“changed”). Ask for a new one, so the instructor never signs something different from what they saw.
• Aerolo checks only that a name and a licence number were typed. It does not verify them. What a signature is worth is decided by your authority or school.
• Signing links are part of the Pilot plan.

Currency has two halves. The top half is a list of documents with expiry dates that you type. The bottom half is recency, calculated from the flights in your Logbook.

Documents. Press Add and choose what you are adding from the list: medicals (EASA Class 1, Class 2, LAPL; FAA first, second, third class), ICAO English level 4, 5 or 6, licences (LAPL, PPL, CPL, ATPL, FAA PPL, CPL, ATP), ratings (SEP, MEP, TMG, IR, night, FI/CRI/IRI, FAA instrument, FAA CFI, type or class rating), and the FAA flight review. “Something else” lets you name your own. Each document has an authority (EASA or FAA), a name, an optional class, an issue date, an expiry date and a note.

• For some ratings Aerolo suggests an expiry from the issue date (for example 24 months for SEP, 12 for MEP and IR, 4 years for ICAO level 4). It is only a suggestion: copy the date from your document and overwrite it.
• For medicals the date depends on your age and privileges, so Aerolo does not suggest one. ICAO level 6 does not expire: leave the expiry empty.
• The FAA flight review expiry is calculated for you: the end of the 24th calendar month after the review (14 CFR 61.56).
• Each document shows a status: Current, Expires soon (within 30 days), Expired, or No date, with the days left.

The verdict. The status banner in the Cockpit is built from these documents only: any expired document makes it red, any document expiring within 30 days makes it amber, otherwise it is green. It is empty until you add at least one document.

Recency. Two tabs, EASA and FAA, show meters calculated from your Logbook flights. Only flights you entered count. Previous-experience totals have no dates, so they cannot be placed inside a 90-day or 12-month window. If you moved from a paper logbook, import or add at least your last flights, or recency will look empty.

On the FAA tab a switch (All aircraft, Single-engine, Multi-engine) narrows the landings. FAA currency is by category and class; Aerolo has only the engine type, so it uses that as a stand-in. Simulator sessions are not counted anywhere.

Weather shows one card per airfield: your home airfield first, then the extra ones you add by typing a 4-letter ICAO code. Each card has a short line of decoded values (wind in degrees and knots with gusts, visibility, temperature and dew point, QNH in hPa), the flight category as a coloured label (VFR, MVFR, IFR or LIFR), how old the observation is, and the raw METAR and TAF text. An observation older than 90 minutes is marked in amber.

• Source. The data comes from aviationweather.gov, fetched through Aerolo’s own server because the source does not allow requests from browsers.
• Freshness. Each airfield is cached for 5 minutes, so pressing refresh does not give newer data than that. There is also a limit on requests per minute for each user.
• Your list. The extra airfields are saved in your profile. The limit includes the home airfield: 4 airfields on Pilot, 9 on Co-Pilot. If the plan allows fewer than you saved, the extra ones are hidden, not deleted.
• No report found. Some airfields have no METAR or TAF. Check the code, or try a nearby airport.
• Not included: charts, radar, satellite, SIGMET, winds aloft or any forecast of your own. The Cockpit shows the home airfield’s weather too.

NOTAM has its own list of airfields, separate from Weather (only the home airfield is shared). The limit is the same as in Weather, counted per list: 4 on Pilot and 9 on Co-Pilot, home airfield included. Add an airfield by typing its ICAO code.

One card per airfield. Closed, a card shows the code and a few labels: a red Closure, a count of NOTAM, how many are active and how many are upcoming, when the next one ends, and how long ago the data was fetched (amber after 3 hours). Open the card to read the NOTAM in three groups: active now, upcoming, and expired (hidden until you ask for them). Long texts are folded, with Show more. Times are UTC; PERM and UFN mean there is no end date. On a narrow screen one card is open at a time, on a wide screen several. The open cards are kept in the web address (for example #LKTB,LKPR), so a reload or a shared link keeps them.

Closures. Runway and aerodrome closures are put first in their group and marked. Aerolo recognises them from the NOTAM’s Q-code (runway or aerodrome closed) or from wording like “RWY … CLSD”. It is a text match: a closure phrased in another way may not be marked, so read the NOTAM.

• Source. The FAA NOTAM Management System, fetched through Aerolo’s server and cached for 5 minutes, at most 200 NOTAM per airfield.
• Coverage. It is built for the United States. It returns NOTAM for many large airfields elsewhere, but it can be late, incomplete or missing, especially outside the US.
• Official sources. Under the cards are links to IBS, AisView and AIM ČR (Czech Republic), EAD Basic (Europe) and the FAA NOTAM Search (US). Tap an ICAO code to copy it, then paste it in the search of the service you open.

News and Regulatory are two feeds with the same layout. News is for safety lessons and changes that affect real flying. Regulatory is for EASA, FAA and national rule changes, bulletins and deadlines that matter to pilots. Both are visible when you are signed in.

• How items are chosen. They are picked and added by hand from official and reputable sources, a few a week. It is a curated selection, not a live wire and not a complete list. A quiet week stays quiet.
• What an item holds. A title that links to the original page, a short summary, the source, the date of the source document and a region: EASA, FAA, Czech Republic or World. Summaries and titles are in English in every interface language.
• “New” marks items published in the last 7 days. Items are grouped under “This week” and then by month, 10 at a time, with Show more.
• Region buttons appear when the list contains more than one region. Regulatory items can also show an effective date and a type (Final rule, Proposal, Guidance, Bulletin, Other) when the item carries them.

Learn has two tabs. Review shows the cards that are due today, one at a time. Cards is your deck, with the starter and ATPL sets on top.

1. 1Open the Cards tab and add cards: the starter deck, an ATPL pack, or your own (press Add card and write a question, an answer and an optional topic).
2. 2Open Review. Read the question, press Show answer, then press Knew it or Missed it.
3. 3A card you knew moves up one box and comes back later. A card you missed goes back to the first box and comes up again in the same session.

• Starter deck: 80 cards in six topics (Aerodynamics, Airspace and Regs, EASA/ICAO Procedures, Navigation, Systems and Instruments, Weather), mixing FAA and EASA/ICAO rules. Each answer names its source. Added cards become yours: edit or delete them freely. They become due 10 a day, so a big batch does not flood your reviews.
• ATPL pack v1: 300 cards from the EASA ATPL syllabus (Air Law, then Airframes, Systems and Powerplant). Each answer names the learning objective it covers. The cards were spot-checked, so confirm against your school’s current course. More packs are planned.
• Your own cards: a question up to 1,000 characters, an answer up to 2,000, and an optional topic. Filter the list by topic.
• The limit: Pilot holds up to 100 of your own cards. The 80 starter cards do not count (if you edit a starter question, that card counts from then on). ATPL cards do count on Pilot. Co-Pilot (the ATPL pack) removes the limit.
• Adding cards needs the Pilot plan. What you already saved stays readable.

The Hangar lists the same aircraft as the Logbook. An aircraft you create while logging a flight, or through a CSV import, appears here as well. Each card shows the registration, make and model, year and single or multi-engine; the airframe hours; your time in it, the number of flights and the date you last flew it; ICAO type, fuel type, planning burn in litres per hour, maximum take-off mass; and a line about what is due in Maintenance, which links to it.

Airframe hours. Enter the hours from the aircraft’s own records and the date they are valid for (“as of the end of”). From then on Aerolo adds the flights you log in that aircraft after that date. If you leave the hours empty the card says so, and anything that needs hours (Maintenance by hours, Fuel burn) cannot be worked out.

• Only your flights are added. If others fly the aircraft too, the hours drift away from the real airframe hours until you enter a fresh value and date.
• An aircraft used in your logbook cannot be deleted. Its delete button is off. Deleting an aircraft with no flights also deletes its maintenance items and fuel log, after a confirmation.
• The registration is unique in your hangar.
• Fields: registration, make and model, ICAO type, engines, class or category, year built, maximum take-off mass in kg, fuel, planning fuel burn, airframe hours and their date, and notes.
• Plans: the extra details need Co-Pilot (the Aircraft add-on). Registration, type and engine are free, because the Logbook needs them.

Maintenance is a reminder for you, not a maintenance record. The official records stay with your maintenance organisation or CAMO. The page has three tabs.

Due dates. Add an item (annual inspection, insurance, airworthiness review, a directive, a life limit, anything) and say when it falls due. Choose a preset to start from, or a blank item.

• A repeating rule: every so many days, every so many hours, or both, counted from when it was last done (the date, and the airframe hours then).
• A fixed deadline: a date, or an airframe-hours value, or both.
• If you set several rules, the one that comes first counts. Hours rules need the airframe hours of the aircraft in the Hangar; without them only the date rule can decide.
• Status: Overdue, Due soon, OK, or Check (not enough information to tell). Due soon means within 30 days or 10 flight hours. For items that repeat more often than every 120 days, the window is a quarter of the interval and at least 3 days, so a 28-day database update is “due soon” for its last 7 days, not all the time.
• The page shows the three counts, sorts the most urgent first, and has a filter when you have more than one aircraft.
• Done today restarts a repeating item from today and from the current airframe hours.

Presets. The list is grouped by how binding an item is: Required (annual inspection, airworthiness review, insurance, ELT check, ELT battery and registration, radio licence, fire extinguisher, airworthiness directives), Required in some cases (100-hour inspection, altimeter and transponder checks for IFR, navigation database, life jackets and raft for flights over water, engine and propeller limits, and similar), and Recommended (oil change, magnetos, spark plugs, filters, compass swing, battery, hoses, tyres and brakes, and more). Each preset shows a hint after you choose it.

Work orders. Record the jobs you give to a workshop or an engineer: what is ordered, who does it, the organisation type (Part-145, CAMO or CAO, Part-66 or ML engineer, owner or pilot-owner), the dates ordered, promised and completed, airframe hours, work done, parts, total cost and currency, an invoice number, and a link to the documents in your own cloud storage (it must start with https). Status is Planned, In the shop, Done or Cancelled. Pick the maintenance items the order covers. When the status is Done (the completion date is then required), a box “Restart the repeating ones from the completion date” is ticked for you, and the repeating items restart from that date and hours. Items with a fixed date or hours are not changed: edit those yourself. The page sums what you spent on completed orders.

Ordered parts. A list of parts and materials you ordered: item, supplier, order date, expected date, status (ordered, shipped, received, cancelled), payment, invoice yes or no, price, order or tracking number. Orders that are late or due within 7 days are highlighted, with a count on the tab, and Mark received closes one. This tab needs a database step on the server: if it has not been done the tab says “not set up yet” and the rest of the page works.

Adding items, work orders and parts needs Co-Pilot (the Aircraft add-on). What you already saved stays readable, editable and deletable.

Fuel measures what your aircraft really burns instead of what the book says. For each fill enter the date, the litres added, whether the tank was filled full, and optionally the airfield, the price per litre with its currency, the airframe hours at the fill, and notes.

• Measured burn (L/h) is the fuel put in between two full-tank fills divided by the airframe hours flown between them. Partial fills in between add to the fuel, but only full fills close a measurement. You need two full fills with flying between them for the first result.
• Airframe hours at a fill are the ones you typed on it, or else worked out from your Logbook and the Hangar start hours. A fill whose hours cannot be placed is not used, and the page tells you how many.
• Cost per flight hour appears per currency, for the measured stretches in which every fill has a price.
• Prices by place summarise your own fills for the aircraft: last price, average weighted by litres, and the number of fills, cheapest average first within each currency. Place names are matched ignoring case and extra spaces.
• How long will the fuel last? Enter the litres on board and a reserve in minutes (45 is filled in to start). Aerolo uses your measured burn, or the planning burn from the Hangar if there is no measurement, and shows usable time and time to empty.

Adding fuel entries needs Co-Pilot (the Aircraft add-on); existing entries stay readable, editable and deletable. Fuel does not change your logbook, your airframe hours or Maintenance.

• Profile. Your name and your home airfield (a 4-letter ICAO code; leave it empty if you have none). Your email is shown and cannot be changed here.
• Language. Use the globe button in the top bar (or on the sign-in page): English, French, German or Spanish. The choice is remembered in this browser and, when you are signed in, on your account.
• Theme. The moon or sun button in the top bar switches between light and dark. It is remembered in this browser.
• Password. At least 8 characters, entered twice. If you forgot it, use “Forgot password” on the sign-in page: the email link takes you to Settings to choose a new one.
• Your data. Download all my data gives you one JSON file with your logbook, simulator sessions, previous experience, documents, aircraft, maintenance, work orders, parts, fuel, flashcards and your account details and airfield lists.
• Plan. The Plan card shows your subscriptions, the trial, the renewal or end date, and buttons to subscribe, manage the subscription or update the payment method. The same card is on the Plan page.
• Sign out. At the bottom of Settings, and in the account menu in the top bar.
• Delete your account. Write to the contact address in the Privacy policy.

Aerolo works best when you know which entries feed which screens. This table lists every link that exists in the code today.

What does not connect. These are kept apart on purpose or because the feature is not built:

• The airfields in Weather and the airfields in NOTAM are two separate lists. Only the home airfield is in both.
• Simulator sessions do not feed totals, Currency or Hangar hours.
• Fuel entries do not change the Logbook, the airframe hours or Maintenance.
• Maintenance does not read your flights directly: it reads the airframe hours of the Hangar.
• Currency never blocks you from logging a flight, and a status banner does not stop anything in the app.
• Weather and NOTAM are not attached to a flight. There is no flight planning, route or briefing pack.
• News, Regulatory and Learn are independent of everything else.

• Where it is kept. Your account and entries are stored with Supabase, hosted in the EU (Frankfurt). Every table is protected so that you can read and change only your own rows. The legal pages list the other providers.
• Cookies. Only what is needed to keep you signed in. There are no advertising or tracking cookies. Language and theme are remembered in your browser.
• Export. Settings, Your data, Download all my data: one JSON file with everything the account holds. The Logbook also exports PDF and CSV.
• Deleting. Delete a single entry in its screen. To delete the whole account and its content, write to the contact address in the Privacy policy.
• If you stop paying. Your data stays, readable and exportable; you only cannot add new entries.

Do I need a card to try Aerolo? No. Every new account gets 20 days of Pilot with no card. Co-Pilot features are not part of the trial.

What happens to my logbook if I stop paying? It stays in your account. You can read, edit, delete and export it. You just cannot add new flights until you have a plan again.

Can Aerolo replace my paper logbook? Only if your authority or school accepts it. The PDF follows the EASA FCL.050 layout, but it is in English and carries no instructor signatures. Ask your authority or school before you rely on it.

I flew a lot before Aerolo. Why is recency empty? Recency counts only flights that are in the Logbook. Previous-experience totals have no dates, so they cannot be placed in a 90-day or 12-month window. Add at least your last flights.

Why does my SEP revalidation meter show too little? It counts single-pilot flights in aircraft marked single-engine. Check the engine type of the aircraft, that the flights have an aircraft, and that dual instruction was entered with the function “Dual”.

After importing, my totals look doubled or short. Why? Flights dated on or before your previous-experience date are not counted again, and rows that match an existing flight are skipped as duplicates. Check the date in Previous experience and the preview of the import.

Why can I not edit or delete a flight? It has been signed by an instructor and is locked. A signed entry cannot be changed from the app.

Why can I not delete an aircraft? It is used by flights in your Logbook. Delete or change those flights first, or keep the aircraft.

The Hangar says the airframe hours are not set. Edit the aircraft and enter the hours from its records and the date they are valid for. Maintenance by hours and Fuel need them.

The weather says “No METAR or TAF found”. Not every airfield issues them. Check the 4-letter code, or try a nearby airport with a report.

NOTAM shows “Test data” or nothing for my airfield. “Test data” means the feed is the FAA test environment: do not use it for planning. The feed is built for the US and can miss NOTAM elsewhere, so use the official services linked under the cards.

How many airfields can I follow? Each of Weather and NOTAM keeps 4 airfields on Pilot and 9 on Co-Pilot, with the home airfield counted. Airfields beyond the limit are hidden, not deleted.

Can I use Aerolo on my phone? Yes. The pages are made for phones as well as computers. Open the menu with the button at the top left.

Does the search box at the top work? Not yet. The search field and the bell are placeholders.

Who can see my data? Other Aerolo users cannot. An instructor you send a signing link to sees the one entry in that link, and only while the link is valid.