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sensors Mode-S transponder

770593

ICAO 24-bit transponder address · allocated to Sri Lanka

Currently assigned to 4R-ALS · AIRBUS A-330-200

Hex
770593
Octal
35602623
Decimal
7,800,211
Country
LK
Tail
4R-ALS
Type
A332
No current signal · last broadcast 3d ago
Flights observed
175
Distinct callsigns
20
Country
LK
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 770593.

Country allocation

The ICAO 24-bit address 770593 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
ALK455 SriLankan Airlines 22 2026-07-23
ALK454 SriLankan Airlines 16 2026-07-22
ALK89L - 12 2026-06-24
ALK26L - 10 2026-07-06
ALK142 - 10 2026-06-25
ALK308 - 9 2026-07-15
ALK266 - 9 2026-07-12
ALK141 - 9 2026-06-25
ALK265 SriLankan Airlines 8 2026-06-29
ALK90L - 7 2026-06-24
ALK604 SriLankan Airlines 6 2026-07-26
ALK25L SriLankan Airlines 6 2026-06-24
ALK153 - 6 2026-07-20
ALK884 SriLankan Airlines 4 2026-05-11
ALK605 SriLankan Airlines 4 2026-07-26
ALK564 - 4 2026-07-17
ALK563 - 4 2026-07-17
ALK154 SriLankan Airlines 4 2026-06-11
ALK471 - 3 2026-07-08
ALK470 - 3 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ALK605 MEL → CMB Jul 26, 06:35 UTCJul 26, 07:45 UTC1h 10m
2026-07-26 ALK604 CMB → MEL Jul 26, 03:15 UTCJul 26, 04:45 UTC1h 30m
2026-07-25 ALK604 CMB → MEL Jul 25, 06:50 UTCJul 26, 04:45 UTC21h 55m
2026-07-25 ALK605 MEL → CMB Jul 25, 06:40 UTCJul 26, 04:45 UTC22h 5m
2026-07-25 ALK604 CMB → MEL Jul 25, 03:35 UTCJul 25, 04:40 UTC1h 5m
2026-07-24 ALK604 CMB → MEL Jul 24, 07:50 UTCJul 25, 04:40 UTC20h 50m
2026-07-24 ALK607 SYD → CMB Jul 24, 06:30 UTCJul 24, 07:05 UTC35m
2026-07-23 ALK606 CMB → SYD Jul 23, 08:50 UTCJul 24, 04:40 UTC19h 50m
2026-07-23 ALK455 NRT → CMB Jul 23, 08:05 UTCJul 24, 04:40 UTC20h 35m
2026-07-23 ALK455 NRT → CMB Jul 23, 04:50 UTCJul 24, 04:40 UTC23h 50m
2026-07-23 ALK455 NRT → CMB Jul 23, 02:50 UTCJul 23, 09:45 UTC6h 55m
2026-07-22 ALK454 CMB → NRT Jul 22, 04:50 UTCJul 22, 23:20 UTC18h 30m
2026-07-22 ALK454 CMB → NRT Jul 22, 04:15 UTCJul 22, 23:20 UTC19h 5m
2026-07-21 ALK455 NRT → ICN Jul 21, 05:30 UTCJul 21, 23:30 UTC18h 0m
2026-07-20 ALK454 CMB → NRT Jul 20, 08:50 UTCJul 21, 03:40 UTC18h 49m
2026-07-20 ALK454 CMB → NRT Jul 20, 08:10 UTCJul 21, 03:40 UTC19h 29m
2026-07-20 ALK153 - Jul 20, 02:55 UTCJul 20, 05:20 UTC2h 25m
2026-07-19 ALK153 - Jul 19, 06:50 UTCJul 20, 05:20 UTC22h 30m
2026-07-19 ALK605 - Jul 19, 06:40 UTCJul 20, 04:45 UTC22h 5m
2026-07-18 ALK604 CMB → MEL Jul 18, 12:55 UTCJul 19, 04:10 UTC15h 15m
2026-07-17 ALK564 - Jul 17, 13:40 UTCJul 18, 11:05 UTC21h 26m
2026-07-17 ALK563 - Jul 17, 00:10 UTCJul 17, 07:00 UTC6h 50m
2026-07-16 ALK563 - Jul 16, 09:30 UTCJul 17, 07:00 UTC21h 30m
2026-07-16 ALK563 - Jul 16, 06:50 UTCJul 17, 06:45 UTC23h 55m
2026-07-16 ALK455 - Jul 16, 06:00 UTCJul 17, 04:44 UTC22h 45m
2026-07-16 ALK455 - Jul 16, 04:10 UTCJul 17, 02:45 UTC22h 35m
2026-07-15 ALK454 - Jul 15, 12:35 UTCJul 16, 02:15 UTC13h 40m
2026-07-15 ALK308 - Jul 15, 09:55 UTCJul 15, 11:05 UTC1h 10m
2026-07-14 ALK455 - Jul 14, 08:15 UTCJul 15, 00:50 UTC16h 34m
2026-07-14 ALK455 - Jul 14, 04:50 UTCJul 15, 00:50 UTC19h 59m
2026-07-14 ALK455 - Jul 14, 02:50 UTCJul 15, 00:50 UTC21h 59m
2026-07-13 ALK454 LHE → NRT Jul 13, 07:40 UTCJul 13, 23:35 UTC15h 55m
2026-07-13 ALK153 - Jul 13, 03:05 UTCJul 13, 05:40 UTC2h 35m
2026-07-12 ALK266 - Jul 12, 13:15 UTCJul 13, 00:30 UTC11h 15m
2026-07-12 ALK455 - Jul 12, 02:45 UTCJul 12, 09:30 UTC6h 45m
2026-07-11 ALK454 - Jul 11, 04:55 UTCJul 11, 23:35 UTC18h 40m
2026-07-10 ALK564 - Jul 10, 16:50 UTCJul 11, 11:15 UTC18h 25m
2026-07-10 ALK564 - Jul 10, 14:50 UTCJul 11, 11:15 UTC20h 25m
2026-07-10 ALK564 - Jul 10, 14:30 UTCJul 11, 11:15 UTC20h 45m
2026-07-09 ALK563 - Jul 9, 20:40 UTCJul 10, 07:10 UTC10h 30m
2026-07-09 ALK455 - Jul 9, 02:55 UTCJul 9, 09:45 UTC6h 50m
2026-07-08 ALK471 ICN → NRT Jul 8, 05:45 UTCJul 8, 23:55 UTC18h 10m
2026-07-07 ALK470 - Jul 7, 09:45 UTCJul 7, 22:25 UTC12h 40m
2026-07-06 ALK26L - Jul 6, 19:20 UTCJul 6, 23:15 UTC3h 55m
2026-07-06 ALK471 - Jul 6, 03:40 UTCJul 6, 17:40 UTC14h 0m
2026-07-05 ALK455 - Jul 5, 02:50 UTCJul 5, 22:00 UTC19h 10m
2026-07-04 ALK454 - Jul 4, 05:00 UTCJul 4, 23:10 UTC18h 10m
2026-07-04 ALK454 - Jul 4, 02:20 UTCJul 4, 23:10 UTC20h 50m
2026-07-03 ALK558 - Jul 3, 16:50 UTCJul 4, 11:20 UTC18h 30m
2026-07-03 ALK558 - Jul 3, 14:50 UTCJul 4, 11:20 UTC20h 30m

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

Mode-S 770593 frequently asked

What is Mode-S code 770593?
770593 is an ICAO 24-bit transponder address. Allocated to Sri Lanka. Assigned to 4R-ALS.
Where is Mode-S 770593 registered?
Mode-S code 770593 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 770593 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 770593, octal 35602623, decimal 7,800,211.
What flights does 770593 operate?
Mode-S 770593 has broadcast 20 distinct callsigns, including ALK455, ALK454, ALK89L, ALK26L, ALK142.