Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

770594

ICAO 24-bit transponder address · allocated to Sri Lanka

Currently assigned to 4R-ALT · AIRBUS A-330-300

Hex
770594
Octal
35602624
Decimal
7,800,212
Country
LK
Tail
4R-ALT
Type
A333
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
212
Distinct callsigns
20
Country
LK
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S 770594.

Country allocation

The ICAO 24-bit address 770594 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
ALK308 - 25 2026-06-28
ALK25L SriLankan Airlines 22 2026-07-26
ALK26L SriLankan Airlines 21 2026-07-26
ALK89L SriLankan Airlines 18 2026-07-22
ALK90L SriLankan Airlines 14 2026-07-23
ALK309 SriLankan Airlines 13 2026-06-20
ALK266 SriLankan Airlines 11 2026-07-23
ALK265 SriLankan Airlines 9 2026-07-23
ALK471 - 6 2026-07-15
ALK470 - 6 2026-07-14
ALK115 - 6 2026-07-18
ALK884 SriLankan Airlines 5 2026-07-20
ALK153 - 5 2026-07-16
ALK141 SriLankan Airlines 5 2026-07-21
ALK102 - 5 2026-07-19
ALK404 - 4 2026-07-02
ALK154 - 4 2026-07-16
ALK142 SriLankan Airlines 4 2026-07-21
ALK122 SriLankan Airlines 4 2026-07-22
ALK101 - 4 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ALK26L DXB → CMB Jul 26, 19:35 UTCJul 26, 23:00 UTC3h 25m
2026-07-26 ALK25L CMB → DXB Jul 26, 16:50 UTCJul 26, 17:15 UTC25m
2026-07-26 ALK25L CMB → DXB Jul 26, 08:45 UTCJul 26, 14:05 UTC5h 20m
2026-07-25 ALK26L DXB → CMB Jul 25, 19:50 UTCJul 25, 23:40 UTC3h 50m
2026-07-25 ALK25L - Jul 25, 08:35 UTCJul 25, 14:30 UTC5h 55m
2026-07-24 ALK26L DXB → CMB Jul 24, 21:05 UTCJul 25, 00:30 UTC3h 25m
2026-07-24 ALK25L - Jul 24, 17:10 UTCJul 24, 17:30 UTC20m
2026-07-24 ALK25L - Jul 24, 07:35 UTCJul 24, 14:35 UTC7h 0m
2026-07-24 ALK314 CMB → KUL Jul 24, 05:15 UTCJul 24, 05:55 UTC40m
2026-07-23 ALK266 RUH → CMB Jul 23, 20:50 UTCJul 24, 00:40 UTC3h 50m
2026-07-23 ALK265 CMB → RUH Jul 23, 13:35 UTCJul 23, 17:30 UTC3h 55m
2026-07-23 ALK90L DAC → CMB Jul 23, 07:15 UTCJul 23, 08:40 UTC1h 25m
2026-07-22 ALK89L CMB → TRZ Jul 22, 11:35 UTCJul 23, 05:30 UTC17h 55m
2026-07-22 ALK122 MAA → CMB Jul 22, 04:25 UTCJul 22, 11:45 UTC7h 20m
2026-07-21 ALK142 BOM → CMB Jul 21, 21:55 UTCJul 21, 23:30 UTC1h 35m
2026-07-21 ALK141 CMB → BOM Jul 21, 02:40 UTCJul 21, 20:30 UTC17h 50m
2026-07-20 ALK141 CMB → BOM Jul 20, 23:05 UTCJul 21, 20:30 UTC21h 24m
2026-07-20 ALK885 CAN → CMB Jul 20, 20:30 UTCJul 21, 19:00 UTC22h 29m
2026-07-20 ALK884 CMB → CAN Jul 20, 17:20 UTCJul 20, 17:45 UTC25m
2026-07-20 ALK90L DAC → CMB Jul 20, 07:50 UTCJul 20, 15:40 UTC7h 50m
2026-07-20 ALK89L CMB → TRZ Jul 20, 03:50 UTCJul 20, 06:10 UTC2h 20m
2026-07-19 ALK266 RUH → CMB Jul 19, 20:55 UTCJul 20, 01:05 UTC4h 10m
2026-07-19 ALK265 CMB → RUH Jul 19, 14:10 UTCJul 19, 18:00 UTC3h 50m
2026-07-19 ALK102 - Jul 19, 03:40 UTCJul 19, 12:00 UTC8h 20m
2026-07-18 ALK266 RUH → CMB Jul 18, 21:00 UTCJul 19, 01:40 UTC4h 40m
2026-07-18 ALK265 CMB → RUH Jul 18, 17:00 UTCJul 18, 17:40 UTC40m
2026-07-18 ALK265 CMB → RUH Jul 18, 13:55 UTCJul 18, 14:20 UTC25m
2026-07-18 ALK115 - Jul 18, 08:55 UTCJul 18, 11:50 UTC2h 55m
2026-07-17 ALK265 - Jul 17, 13:25 UTCJul 18, 00:45 UTC11h 20m
2026-07-17 ALK315 - Jul 17, 07:40 UTCJul 17, 08:04 UTC25m
2026-07-16 ALK26L DXB → CMB Jul 16, 20:25 UTCJul 17, 05:50 UTC9h 25m
2026-07-16 ALK25L - Jul 16, 14:50 UTCJul 16, 18:34 UTC3h 45m
2026-07-16 ALK154 - Jul 16, 07:30 UTCJul 16, 10:10 UTC2h 40m
2026-07-16 ALK153 - Jul 16, 03:00 UTCJul 16, 05:20 UTC2h 20m
2026-07-15 ALK26L - Jul 15, 19:20 UTCJul 15, 23:10 UTC3h 50m
2026-07-15 ALK25L - Jul 15, 17:05 UTCJul 15, 17:35 UTC30m
2026-07-15 ALK25L - Jul 15, 13:55 UTCJul 15, 14:35 UTC40m
2026-07-15 ALK471 - Jul 15, 04:25 UTCJul 15, 10:20 UTC5h 55m
2026-07-14 ALK470 - Jul 14, 06:55 UTCJul 15, 00:15 UTC17h 19m
2026-07-14 ALK89L - Jul 14, 03:50 UTCJul 14, 05:15 UTC1h 25m
2026-07-13 ALK471 - Jul 13, 05:05 UTCJul 14, 00:25 UTC19h 20m
2026-07-13 ALK471 - Jul 13, 03:10 UTCJul 14, 00:25 UTC21h 15m
2026-07-12 ALK470 - Jul 12, 05:15 UTCJul 12, 22:40 UTC17h 25m
2026-07-12 ALK470 - Jul 12, 02:20 UTCJul 12, 22:40 UTC20h 20m
2026-07-11 ALK26L - Jul 11, 19:35 UTCJul 11, 23:25 UTC3h 50m
2026-07-11 ALK25L - Jul 11, 02:50 UTCJul 11, 17:30 UTC14h 40m
2026-07-10 ALK266 - Jul 10, 13:50 UTCJul 11, 00:45 UTC10h 56m
2026-07-10 ALK90L - Jul 10, 07:35 UTCJul 10, 08:45 UTC1h 10m
2026-07-10 ALK89L - Jul 10, 04:10 UTCJul 10, 05:30 UTC1h 20m
2026-07-09 ALK26L - Jul 9, 19:35 UTCJul 9, 23:20 UTC3h 45m

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-ALT page for operator, model, and routing details .

Mode-S 770594 frequently asked

What is Mode-S code 770594?
770594 is an ICAO 24-bit transponder address. Allocated to Sri Lanka. Assigned to 4R-ALT.
Where is Mode-S 770594 registered?
Mode-S code 770594 is allocated to Sri Lanka (LK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 770594 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 770594, octal 35602624, decimal 7,800,212.
What flights does 770594 operate?
Mode-S 770594 has broadcast 20 distinct callsigns, including ALK308, ALK25L, ALK26L, ALK89L, ALK90L.