The airport reference is a bundled, offline-first database of airports, runways and frequencies. There is no Airports tab: you reach it from the Aviation Map's airport peek, Home's nearby airports shortcut and the station workbench's Airport tab, and the search page behind them reaches every field in the database. Offline, every reference page carries the module's framing line: "Data from OurAirports · Reference only. Verify with current charts."
Find your way around
The Airports page opens on a search field. Below it sit the shortcuts that grow as you use the module:
| Section | What it shows |
|---|---|
| Search field | Placeholder "ICAO, IATA, city or name"; results appear as you type, from the on-device database |
| Saved & collections | The row under the Collections heading: it opens your groups and starred airports, and counts your groups and the airports in them |
| Browse by country | Every country with its airport count, filterable by type |
| Favourites | Your starred fields, each with its elevation |
| Recently viewed | Pills for the fields you opened last |
The header holds the navigate icon, which opens Nearby airports from one GPS fix.

How to find an airport
- Open the Airports page, or the airport search from Home's nearby airports shortcut or the Aviation Map's airport peek.
- Type an ICAO, IATA code, city or name. "EGLL", "LHR" and "Heathrow" all find the same airport. Results appear as you type, entirely from the on-device database, and fields you have starred sort to the top.
- Tap a result to open its reference page.

How to read the reference page
An airport's page is one scroll through everything the database holds on the field, card by card:
- Read the Identity card: ICAO and IATA codes, scheduled-service status, type, elevation in feet and metres, and coordinates. Tap the star here to add the field to your favourites.
- Read the Timezone card: the field's local time right now, its IANA zone, UTC offset and whether DST is active.

- Read the Sun card: sunrise, sunset, day length, solar noon and all three twilight bands, local and Zulu. Pick any date to recompute it. The card names its method: "Source: NOAA solar-position algorithm · Computed".

- Read the Runways card. Each physical runway is drawn as a schematic strip with its identifiers, length in both units, width and surface. A displaced threshold is drawn with its painted arrows and threshold bar, and called out in amber with its length.

How to check crosswind and low sun
- Scroll to the Crosswind by runway card. With a current METAR available, the reported wind is broken onto every runway end: headwind or tailwind and crosswind per end, with the most-headwind end badged Favoured · most headwind.
- Check the METAR line under the wind rose for its source and age. If there is no current METAR, the card says so instead of computing from stale air.

- Scroll to the low-sun glare card. It draws the runways from above with the sun's current position, states whether a low sun lines up with a runway heading right now, and names the next alignment window and the runway it falls on.

How to look up frequencies
- Scroll to the Frequencies card. Frequencies come grouped: tower, ground, approach and departure, ATIS, delivery, emergency.
- Read the card's standing line beneath the groups: "Reference only - verify on current charts."
- Read the attribution block directly under the card. It names the source, the fetch time, and which values were gap-filled from the bundled data.

How to keep notes on a field
- Scroll to the foot of the reference page, to the Notes card.
- Tap Add a note.
- Type your note: taxi quirks, crew shuttles, parking.
- Tap Save, or Cancel to discard it.


How to find airports near you
- Tap the navigate icon in the Airports page header, or the nearby airports shortcut on Home's weather cards.
- Allow one GPS fix. The map shows the medium and large fields around you with a distance-ranked list beneath.
- Switch the radius between 25, 50 and 100 NM. In sparse regions, tap Search wider (200 NM) to extend the search.
- Tap a field to open its preview: runways and frequencies, View airport for the full reference page, Add to brief, or Set as home base.

How to browse by country
- On the Airports page, tap Browse by country.
- Filter by type with the chips: All, Large, Medium, Small, Heliports, Seaplane. Each country row shows its airport count for that filter.
- Use Filter countries to narrow the list, then tap a country to open its full list of fields.
- Tap a field to open its reference page.

How to save favourites and build a group
- On any reference page, tap the star in the Identity card. The field joins your favourites and sorts to the top of search results.
- On the Airports page, tap the Saved & collections row under Collections to open Saved. It lists your Groups and your Saved airports.
- Tap the plus button at the bottom right to create a group, and give it a name: home base and diverts, EU hubs, a training circuit.
- On the group's page, tap Add airport and type one code or several at once. A hyphen is added after every fourth letter as you type ("EGLL-EHAM-LFPG"). Tap Add.

How to load a group into Brief
- Open Saved and tap a group. Each member shows its live METAR, raw and verbatim, with a flight-rules badge and an age pill, the same anatomy as the weather watch-list.
- Tap Load into Brief. The group's members replace the current Brief selection, in order, and Brief opens.

How to open the reference from the station workbench
- On the Flight Brief tab, switch to Stations and open any station on your watch-list.
- Tap Airport, the first segment on the workbench strip, ahead of Summary, METAR and TAF.
- Read the same reference cards, with the same attributions. Its nearby fields rows open each field's station view, so you stay in the weather context you came from.

On iPad
The browse and saved screens open as a split view: the list on one side, the full reference page on the other, so scanning a country's fields keeps the page you were reading in view.

Troubleshooting
The crosswind card shows no figures. It needs a current METAR. Without one the card says so rather than computing from stale wind.
The favoured runway differs from what the tower is using. Favoured means most headwind from the METAR's true wind against magnetic runway numbers; it is not a recommendation. Verify on charts and ATIS.
A small airfield or heliport is missing from Nearby airports. Nearby shows medium and large fields only. Search for it by code or name, or find it under Browse by country with the Small or Heliports filter.
Adding several codes to a group failed. One code in the batch is not a valid 4-letter ICAO code; the message names it. Fix that code and add again.
My notes did not appear on another device. Notes are private to the device they were written on and are never synced or shared.
Where next
- Weather - the station workbench this reference lives in, and the METAR that feeds the crosswind matrix.
- NOTAMs - the field's notices, one tab over from the Airport segment.
- Free vs Pro - where the airport reference sits: entirely on the free side.