1. Without signing in you can already see the live traffic on the map and click any aircraft.
2. To monitor flights and get alerts, click LOGIN (top right): type your e-mail and a password and click Create account. It is free; confirm the link sent to your e-mail, then sign in. You get your own company and up to 5 flights at a time.
3. Joining a team: ask the administrator of that company to invite your e-mail (Admin tab). Sign in with that e-mail and you join it; if you already had an account, a message offers to join.
4. Top bar: ● WORKER ON means the monitoring worker ran in the last 3 minutes (hover it to see its last note). The ☀ / ☾ switch changes between light and dark. Alerts shows how many unread alerts you have.

1 · Click it on the map (fastest)

1. In Flight monitor, zoom into the area. Grey aircraft are the live traffic (button Traffic turns it on/off).
2. Click an aircraft. From / To are filled from a route database when available; check them. Only To is needed; leave both empty to just follow it until it lands (max 6 h).
3. Click Monitor this flight. It enters as tracking: position, level, ETA, signal and destination weather, without deviation alerts (there is no flight plan route yet).
4. To get deviation alerts, select it and use Edit flight to paste the flight plan route.

2 · From the flight plan (full monitoring)

1. Open Flight plan.
2. Callsign (ICAO): the callsign the transponder sends, e.g. TAM3050, not the airline flight number LA3050.
3. Departure (UTC): planned off-block/take-off time.
4. Route: as in the flight plan, from origin to destination, e.g. SBSP N0450F350 NUXEL UZ23 KIBAP SBCF. Origin and destination are the first and last words; speed and level are read from groups like N0450F350.
5. Optionally click Check route to see the points built by airac.net, then Add to monitor.
6. Advanced holds date, planned level, speed, tolerances and a coordinates mode. Without a planned level the vertical deviation is not checked.

• Counters (top): flights, on route, caution, off route.
• Table: Flight · Route · Level (▲ climbing / ▼ descending, then the planned level) · ETA (live, with +/− minutes against the plan) · Deviation (lateral NM; SID/STAR = not assessed near the airports; tracking = picked from the map) · Status. Problems always come first. Click a row to select it.
• Flight panel (right): route, AIRAC cycle, possible SID/STAR, planned and actual departure, ETA, deviations, phase, current level and vertical rate, next point, remaining distance, ground speed, last position and ICAO24.
• Destination weather: the latest METAR/TAF of the selected flight's destination.

• Zoom with the mouse wheel or pinch; drag to move. Once you move it, the map stops re-centring by itself.
• S / M / L or the handle below the map change its size (remembered by the browser).
• Orange aircraft are the live traffic; faded ones are on the ground (or below 35 kt, since many small aircraft do not report ground status and send the airport altitude instead).
• Find flight (magnifier): type the flight number (LA4635, G3 1450, AD4021, Z39000), the callsign (TAM4635) or the registration (PR-GZU). The map goes to the aircraft wherever it is and opens its window: click Monitor this flight. It finds flights that are in the air now; for one that has not departed yet, use Flight plan.
• Fit all flights frames every monitored flight; Follow selected keeps the selected one in view.
• Selected flight: dashed planned route with fix names and a shaded corridor at the real tolerance width. Purple dotted lines are the possible SIDs/STARs from airac.net (reference only, no alerts).
• Airport circles change colour with the weather (yellow caution, red critical).

• They appear in the Alerts panel and as pop-ups: off route / back on route, signal lost / recovered, aircraft not identified, route errors, METAR and NOTAM at airports you use.
• Climb-out (SID) and arrival (STAR) do not trigger lateral alerts: up to 60 NM from the origin on the first leg and 80 NM from the destination on the last leg, because the runway in use and ATC vectors change the real path.
• Ack marks an alert as seen; Clear display hides the current ones from the panel. Nothing is deleted from the history.
• The panel only shows alerts of flights currently monitored, plus METAR/NOTAM alerts from the last 6 hours.

Signal and identification

• Signal lost: the free ADS-B networks often lose aircraft for a few minutes, mainly inland. The map keeps the aircraft moving as ESTIMATED and the table shows NO SIGNAL after 10 min, but the signal lost alert is only sent after 30 min without a position. Signal recovered is sent only after that alert.
• Not identified yet: sent as a caution 45 min after the planned departure if no matching aircraft was found. Departure delays are common; if the flight did leave, check the callsign.

When a flight ends

• Landed: a position on the ground, near the destination and slow; or, because the free networks rarely see aircraft on the ground, the signal ended low (below 5,000 ft) within 20 NM of the destination and did not come back for 15 min. No signal lost alert is sent in that case.
• Next flight of the same aircraft: once identified, the aircraft is followed by its ICAO24 address. If it starts transmitting another callsign (for example THY15 becomes THY16 for the return), monitoring of the original flight is closed and it is not followed on the next leg.
• No landing confirmation: the flight is closed 6 h after the estimated arrival. The estimate uses the actual departure when it is known, so delayed flights are not closed early.

• METAR/TAF Alert shows the airports of active flights and the ones you watch (Watch another aerodrome). Highlighted groups (BKN007, TS, FG…) are the reasons for the alert.
• Criteria: visibility below 5000 m (critical below 1000 m), ceiling below 1500 ft (critical below 500 ft), RVR below 800 m, gust 25 kt or more, thunderstorm/CB. A METAR older than 75 min is never shown as normal.
• Dismiss hides a card until a new METAR or TAF arrives; Unwatch stops watching an extra airport.
• NOTAM Alert lists NOTAMs from AISWEB (runway closed = critical).

• Select a flight and click Edit flight: the form opens filled in; change and Save changes. Changing the callsign means another aircraft (it is identified again).
• Remove flight stops monitoring it.
• Up to 5 flights per company are monitored at the same time.

• Whoever creates the account is the administrator of their company. Company name can be changed there.
• Invite by e-mail: the person joins your company when signing in with that e-mail, and sees the same flights and alerts. Remove takes someone out (click twice to confirm).
• Team: who has access, role and last sign-in. Online now: who has the site open.
• All flights of the company share its slots (5 at a time).

• ADS-B comes from community receiver networks. Where there are few receivers (parts of inland Brazil, oceans), positions may be delayed or missing; this is a coverage limit, not an error.
• Times are UTC. Levels are pressure altitude from the transponder.
• To save resources, the live traffic layer pauses after 10 minutes without any activity on the page; move the map to resume. Without signing in it updates every 30 seconds. Monitored flights are not affected: the worker keeps watching them with the site closed.

Data sources: ADS-B positions from the community networks adsb.lol (data under the ODbL), adsb.fi and airplanes.live; routes, fixes, airways and procedures from airac.net; METAR/TAF from REDEMET (DECEA) or NOAA Aviation Weather; NOTAM from AISWEB (DECEA); map © OpenStreetMap contributors.