sensors Mode-S transponder
77058E
ICAO 24-bit transponder address · allocated to Sri Lanka
Currently assigned to 4R-ALN · AIRBUS A-330-300
- Hex
- 77058E
- Octal
- 35602616
- Decimal
- 7,800,206
- Country
- LK
- Tail
- 4R-ALN
- Type
- A333
- Flights observed
- 113
- Distinct callsigns
- 20
- Country
- LK
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 77058E falls within the block assigned to Sri Lanka (LK) by ICAO Annex 10, Volume III. Every aircraft registered in Sri Lanka receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| ALK604 | SriLankan Airlines | 20 | 2026-05-24 |
| ALK605 | SriLankan Airlines | 15 | 2026-05-25 |
| ALK455 | SriLankan Airlines | 14 | 2026-05-28 |
| ALK454 | SriLankan Airlines | 11 | 2026-05-27 |
| ALK607 | SriLankan Airlines | 6 | 2026-05-16 |
| ALK558 | SriLankan Airlines | 5 | 2026-04-17 |
| ALK606 | SriLankan Airlines | 4 | 2026-05-16 |
| ALK557 | SriLankan Airlines | 4 | 2026-04-17 |
| ALK308 | SriLankan Airlines | 4 | 2026-05-21 |
| ALK26L | SriLankan Airlines | 4 | 2026-05-23 |
| ALK142 | SriLankan Airlines | 4 | 2026-05-28 |
| ALK101 | SriLankan Airlines | 4 | 2026-05-24 |
| ALK141 | SriLankan Airlines | 3 | 2026-05-28 |
| ALK89L | SriLankan Airlines | 2 | 2026-05-27 |
| ALK470 | SriLankan Airlines | 2 | 2026-05-12 |
| ALK309 | - | 2 | 2026-04-19 |
| ALK266 | SriLankan Airlines | 2 | 2026-05-22 |
| ALK314 | SriLankan Airlines | 1 | 2026-04-24 |
| ALK265 | SriLankan Airlines | 1 | 2026-05-26 |
| ALK25L | SriLankan Airlines | 1 | 2026-04-24 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-28 | ALK142 | BOM → CMB | May 28, 23:40 UTC | May 29, 00:35 UTC | 55m |
| 2026-05-28 | ALK142 | BOM → CMB | May 28, 22:55 UTC | May 28, 23:05 UTC | 10m |
| 2026-05-28 | ALK141 | CMB → BOM | May 28, 21:15 UTC | May 28, 21:25 UTC | 10m |
| 2026-05-28 | ALK455 | NRT → CMB | May 28, 02:40 UTC | May 28, 20:40 UTC | 18h 0m |
| 2026-05-27 | ALK454 | CMB → NRT | May 27, 09:05 UTC | May 27, 23:15 UTC | 14h 10m |
| 2026-05-27 | ALK89L | CMB → TRZ | May 27, 05:45 UTC | May 27, 07:15 UTC | 1h 31m |
| 2026-05-26 | ALK265 | CMB → RUH | May 26, 02:24 UTC | May 27, 00:30 UTC | 22h 5m |
| 2026-05-25 | ALK605 | MEL → CMB | May 25, 07:35 UTC | May 26, 05:20 UTC | 21h 44m |
| 2026-05-25 | ALK605 | MEL → CMB | May 25, 06:50 UTC | May 26, 02:35 UTC | 19h 44m |
| 2026-05-24 | ALK604 | CMB → MEL | May 24, 11:10 UTC | May 25, 04:50 UTC | 17h 40m |
| 2026-05-24 | ALK604 | CMB → MEL | May 24, 08:25 UTC | May 25, 04:50 UTC | 20h 25m |
| 2026-05-24 | ALK604 | CMB → MEL | May 24, 05:35 UTC | May 25, 04:50 UTC | 23h 15m |
| 2026-05-24 | ALK101 | CMB → MLE | May 24, 02:35 UTC | May 24, 11:15 UTC | 8h 40m |
| 2026-05-23 | ALK26L | DXB → CMB | May 23, 05:30 UTC | May 23, 23:05 UTC | 17h 35m |
| 2026-05-23 | ALK26L | DXB → CMB | May 23, 02:15 UTC | May 23, 23:05 UTC | 20h 50m |
| 2026-05-22 | ALK266 | RUH → CMB | May 22, 13:05 UTC | May 23, 00:10 UTC | 11h 5m |
| 2026-05-22 | ALK122 | MAA → CMB | May 22, 06:20 UTC | May 22, 06:45 UTC | 25m |
| 2026-05-21 | ALK142 | BOM → CMB | May 21, 22:35 UTC | May 22, 00:15 UTC | 1h 40m |
| 2026-05-21 | ALK141 | CMB → BOM | May 21, 12:35 UTC | May 21, 20:30 UTC | 7h 55m |
| 2026-05-21 | ALK308 | CMB → SIN | May 21, 09:50 UTC | May 21, 10:40 UTC | 50m |
| 2026-05-20 | ALK266 | RUH → CMB | May 20, 13:25 UTC | May 21, 00:20 UTC | 10h 55m |
| 2026-05-20 | ALK101 | CMB → MLE | May 20, 02:25 UTC | May 20, 05:35 UTC | 3h 11m |
| 2026-05-19 | ALK455 | NRT → CMB | May 19, 03:35 UTC | May 19, 23:00 UTC | 19h 25m |
| 2026-05-19 | ALK455 | NRT → CMB | May 19, 02:45 UTC | May 19, 23:00 UTC | 20h 15m |
| 2026-05-18 | ALK454 | CMB → NRT | May 18, 07:10 UTC | May 18, 23:15 UTC | 16h 4m |
| 2026-05-18 | ALK89L | CMB → TRZ | May 18, 04:40 UTC | May 18, 05:20 UTC | 40m |
| 2026-05-17 | ALK26L | DXB → CMB | May 17, 13:31 UTC | May 17, 23:20 UTC | 9h 50m |
| 2026-05-17 | ALK101 | CMB → MLE | May 17, 02:55 UTC | May 17, 05:45 UTC | 2h 50m |
| 2026-05-16 | ALK607 | SYD → CMB | May 16, 10:01 UTC | May 17, 05:45 UTC | 19h 45m |
| 2026-05-16 | ALK607 | SYD → CMB | May 16, 07:45 UTC | May 17, 05:45 UTC | 22h 0m |
| 2026-05-16 | ALK607 | SYD → CMB | May 16, 06:31 UTC | May 17, 03:05 UTC | 20h 34m |
| 2026-05-16 | ALK606 | CMB → SYD | May 16, 04:05 UTC | May 16, 04:45 UTC | 40m |
| 2026-05-15 | ALK606 | CMB → SYD | May 15, 07:35 UTC | May 16, 04:45 UTC | 21h 9m |
| 2026-05-15 | ALK605 | MEL → CMB | May 15, 06:30 UTC | May 16, 04:45 UTC | 22h 14m |
| 2026-05-14 | ALK604 | CMB → MEL | May 14, 09:50 UTC | May 15, 04:20 UTC | 18h 30m |
| 2026-05-14 | ALK455 | NRT → CMB | May 14, 07:35 UTC | May 15, 04:20 UTC | 20h 45m |
| 2026-05-14 | ALK455 | NRT → CMB | May 14, 04:25 UTC | May 15, 03:30 UTC | 23h 5m |
| 2026-05-13 | ALK454 | CMB → NRT | May 13, 03:35 UTC | May 13, 22:50 UTC | 19h 15m |
| 2026-05-12 | ALK470 | CMB → ICN | May 12, 03:35 UTC | May 12, 21:40 UTC | 18h 5m |
| 2026-05-12 | ALK455 | NRT → CMB | May 12, 03:00 UTC | May 12, 21:40 UTC | 18h 40m |
| 2026-05-11 | ALK454 | CMB → NRT | May 11, 04:40 UTC | May 11, 22:35 UTC | 17h 55m |
| 2026-05-11 | ALK454 | CMB → NRT | May 11, 02:35 UTC | May 11, 22:35 UTC | 20h 0m |
| 2026-05-10 | ALK605 | MEL → CMB | May 10, 06:59 UTC | May 11, 00:05 UTC | 17h 5m |
| 2026-05-09 | ALK604 | CMB → MEL | May 9, 10:45 UTC | May 10, 05:14 UTC | 18h 30m |
| 2026-05-09 | ALK605 | MEL → CMB | May 9, 08:10 UTC | May 10, 05:14 UTC | 21h 5m |
| 2026-05-08 | ALK604 | CMB → MEL | May 8, 11:44 UTC | May 9, 06:30 UTC | 18h 45m |
| 2026-05-08 | ALK604 | CMB → MEL | May 8, 09:34 UTC | May 9, 06:30 UTC | 20h 55m |
| 2026-05-08 | ALK605 | MEL → CMB | May 8, 09:09 UTC | May 9, 06:30 UTC | 21h 20m |
| 2026-05-08 | ALK604 | CMB → MEL | May 8, 03:35 UTC | May 8, 05:00 UTC | 1h 25m |
| 2026-05-07 | ALK604 | CMB → MEL | May 7, 08:35 UTC | May 8, 05:00 UTC | 20h 25m |
About Mode-S
A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.
Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.
Prefer a tail-number view? See the 4R-ALN page for operator, model, and routing details .