Apparatus

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sensors Mode-S transponder

770592

ICAO 24-bit transponder address · allocated to Sri Lanka

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

Hex
770592
Octal
35602622
Decimal
7,800,210
Country
LK
Tail
4R-ALR
Type
A333
No current signal · last broadcast 1d ago
Flights observed
207
Distinct callsigns
20
Country
LK
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 770592.

Country allocation

The ICAO 24-bit address 770592 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
ALK504 - 35 2026-07-08
ALK503 - 33 2026-07-08
ALK604 - 26 2026-07-13
ALK501 - 21 2026-06-19
ALK605 - 16 2026-07-13
ALK600 SriLankan Airlines 10 2026-05-22
ALK26L - 7 2026-07-07
ALK266 SriLankan Airlines 7 2026-06-07
ALK25L - 7 2026-07-07
ALK90L - 6 2026-06-22
ALK265 SriLankan Airlines 6 2026-07-01
ALK606 - 5 2026-07-11
ALK89L - 3 2026-06-21
ALK607 SriLankan Airlines 2 2026-05-03
ALK563 - 2 2026-07-04
ALK454 SriLankan Airlines 2 2026-06-03
ALK405 SriLankan Airlines 2 2026-04-23
ALK404 SriLankan Airlines 2 2026-04-23
ALK121 SriLankan Airlines 2 2026-05-27
ALK885 - 1 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ALK605 - Jul 13, 06:40 UTCJul 13, 08:01 UTC1h 20m
2026-07-13 ALK604 - Jul 13, 03:10 UTCJul 13, 04:35 UTC1h 25m
2026-07-12 ALK605 MEL → MEL Jul 12, 06:45 UTCJul 13, 04:35 UTC21h 50m
2026-07-12 ALK604 - Jul 12, 01:45 UTCJul 12, 04:20 UTC2h 35m
2026-07-11 ALK604 - Jul 11, 06:35 UTCJul 12, 04:20 UTC21h 45m
2026-07-11 ALK606 - Jul 11, 03:50 UTCJul 11, 04:35 UTC45m
2026-07-10 ALK605 MEL → SYD Jul 10, 06:45 UTCJul 11, 04:35 UTC21h 50m
2026-07-09 ALK604 - Jul 9, 11:40 UTCJul 10, 04:50 UTC17h 10m
2026-07-09 ALK604 - Jul 9, 09:00 UTCJul 10, 04:50 UTC19h 50m
2026-07-09 ALK604 - Jul 9, 06:15 UTCJul 10, 04:30 UTC22h 15m
2026-07-09 ALK604 - Jul 9, 04:30 UTCJul 10, 02:05 UTC21h 35m
2026-07-08 ALK504 - Jul 8, 22:35 UTCJul 9, 16:50 UTC18h 15m
2026-07-08 ALK504 - Jul 8, 20:55 UTCJul 9, 16:50 UTC19h 55m
2026-07-08 ALK503 - Jul 8, 08:05 UTCJul 8, 19:00 UTC10h 55m
2026-07-07 ALK26L - Jul 7, 19:35 UTCJul 7, 23:20 UTC3h 45m
2026-07-07 ALK25L - Jul 7, 13:40 UTCJul 7, 14:25 UTC45m
2026-07-06 ALK504 - Jul 6, 20:50 UTCJul 7, 06:20 UTC9h 30m
2026-07-06 ALK503 - Jul 6, 08:05 UTCJul 6, 19:00 UTC10h 55m
2026-07-05 ALK564 - Jul 5, 13:30 UTCJul 6, 05:10 UTC15h 40m
2026-07-04 ALK563 - Jul 4, 20:40 UTCJul 5, 07:20 UTC10h 40m
2026-07-04 ALK563 - Jul 4, 06:55 UTCJul 5, 06:30 UTC23h 35m
2026-07-04 ALK606 - Jul 4, 04:40 UTCJul 4, 05:20 UTC40m
2026-07-03 ALK605 MEL → SYD Jul 3, 06:45 UTCJul 4, 05:20 UTC22h 35m
2026-07-02 ALK604 - Jul 2, 08:35 UTCJul 3, 04:30 UTC19h 55m
2026-07-01 ALK265 CMB → RUH Jul 1, 06:40 UTCJul 2, 01:00 UTC18h 20m
2026-07-01 ALK265 CMB → RUH Jul 1, 04:45 UTCJul 2, 01:00 UTC20h 15m
2026-07-01 ALK504 - Jul 1, 01:25 UTCJul 2, 00:30 UTC23h 5m
2026-06-30 ALK504 - Jun 30, 22:35 UTCJul 1, 21:30 UTC22h 55m
2026-06-30 ALK504 - Jun 30, 21:10 UTCJul 1, 17:50 UTC20h 40m
2026-06-30 ALK503 - Jun 30, 08:20 UTCJun 30, 18:55 UTC10h 35m
2026-06-29 ALK885 - Jun 29, 20:49 UTCJun 30, 05:40 UTC8h 51m
2026-06-29 ALK884 CMB → CAN Jun 29, 17:59 UTCJun 29, 18:25 UTC25m
2026-06-28 ALK504 - Jun 28, 22:34 UTCJun 29, 17:14 UTC18h 40m
2026-06-28 ALK504 - Jun 28, 20:54 UTCJun 29, 17:14 UTC20h 20m
2026-06-28 ALK503 - Jun 28, 08:09 UTCJun 28, 18:55 UTC10h 45m
2026-06-27 ALK265 CMB → RUH Jun 27, 13:35 UTCJun 28, 00:50 UTC11h 15m
2026-06-26 ALK504 - Jun 26, 21:10 UTCJun 27, 06:40 UTC9h 30m
2026-06-26 ALK503 - Jun 26, 08:05 UTCJun 26, 18:54 UTC10h 50m
2026-06-25 ALK26L - Jun 25, 19:29 UTCJun 25, 23:19 UTC3h 50m
2026-06-25 ALK25L CMB → DXB Jun 25, 13:40 UTCJun 25, 17:14 UTC3h 35m
2026-06-24 ALK504 - Jun 24, 21:00 UTCJun 25, 06:40 UTC9h 40m
2026-06-24 ALK503 - Jun 24, 04:39 UTCJun 24, 18:50 UTC14h 10m
2026-06-22 ALK265 CMB → RUH Jun 22, 13:14 UTCJun 23, 00:30 UTC11h 15m
2026-06-22 ALK90L - Jun 22, 07:19 UTCJun 22, 08:50 UTC1h 30m
2026-06-21 ALK89L - Jun 21, 12:55 UTCJun 22, 05:29 UTC16h 35m
2026-06-21 ALK308 - Jun 21, 10:04 UTCJun 21, 11:15 UTC1h 10m
2026-06-20 ALK26L - Jun 20, 22:35 UTCJun 20, 23:19 UTC45m
2026-06-20 ALK26L - Jun 20, 19:24 UTCJun 20, 19:55 UTC30m
2026-06-20 ALK25L CMB → DXB Jun 20, 17:19 UTCJun 20, 17:29 UTC10m
2026-06-20 ALK90L - Jun 20, 07:29 UTCJun 20, 14:24 UTC6h 55m

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

Mode-S 770592 frequently asked

What is Mode-S code 770592?
770592 is an ICAO 24-bit transponder address. Allocated to Sri Lanka. Assigned to 4R-ALR.
Where is Mode-S 770592 registered?
Mode-S code 770592 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 770592 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 770592, octal 35602622, decimal 7,800,210.
What flights does 770592 operate?
Mode-S 770592 has broadcast 20 distinct callsigns, including ALK504, ALK503, ALK604, ALK501, ALK605.