Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

77044F

ICAO 24-bit transponder address · allocated to Sri Lanka

Currently assigned to 4R-ABO · AIRBUS A-320

Hex
77044F
Octal
35602117
Decimal
7,799,887
Country
LK
Tail
4R-ABO
Type
A320
No current signal · last broadcast 27d ago
Flights observed
102
Distinct callsigns
20
Country
LK
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S 77044F.

Country allocation

The ICAO 24-bit address 77044F 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
ALK191 SriLankan Airlines 12 2026-06-02
ALK192 SriLankan Airlines 8 2026-06-03
ALK402 SriLankan Airlines 7 2026-06-11
ALK152 SriLankan Airlines 5 2026-06-06
ALK195 SriLankan Airlines 4 2026-05-05
ALK90L SriLankan Airlines 3 2026-05-10
ALK89L SriLankan Airlines 3 2026-05-10
ALK405 SriLankan Airlines 3 2026-06-08
ALK404 SriLankan Airlines 3 2026-06-11
ALK403 SriLankan Airlines 3 2026-06-12
ALK314 - 3 2026-06-13
ALK306 SriLankan Airlines 3 2026-06-13
ALK196 SriLankan Airlines 3 2026-05-05
ALK186 SriLankan Airlines 3 2026-06-14
ALK185 SriLankan Airlines 3 2026-06-14
ALK168 SriLankan Airlines 3 2026-05-13
ALK151 SriLankan Airlines 3 2026-06-05
ALK307 SriLankan Airlines 2 2026-05-15
ALK184 SriLankan Airlines 2 2026-06-16
ALK183 SriLankan Airlines 2 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-16 ALK184 KHI → CMB Jun 16, 13:25 UTCJun 16, 15:50 UTC2h 25m
2026-06-16 ALK183 CMB → KHI Jun 16, 08:55 UTCJun 16, 11:15 UTC2h 20m
2026-06-14 ALK186 LHE → CMB Jun 14, 13:40 UTCJun 14, 16:30 UTC2h 50m
2026-06-14 ALK185 CMB → LHE Jun 14, 02:10 UTCJun 14, 11:50 UTC9h 40m
2026-06-13 ALK306 CMB → SIN Jun 13, 07:55 UTCJun 14, 00:20 UTC16h 25m
2026-06-13 ALK314 - Jun 13, 05:10 UTCJun 13, 05:50 UTC40m
2026-06-12 ALK314 - Jun 12, 09:05 UTCJun 13, 05:50 UTC20h 44m
2026-06-12 ALK314 - Jun 12, 06:05 UTCJun 13, 05:45 UTC23h 39m
2026-06-12 ALK403 BKK → CMB Jun 12, 01:00 UTCJun 12, 09:10 UTC8h 10m
2026-06-11 ALK402 CMB → BKK Jun 11, 07:20 UTCJun 11, 23:00 UTC15h 40m
2026-06-11 ALK404 CMB → BKK Jun 11, 04:45 UTCJun 11, 05:40 UTC55m
2026-06-09 ALK186 LHE → CMB Jun 9, 13:30 UTCJun 10, 05:30 UTC16h 0m
2026-06-09 ALK185 CMB → LHE Jun 9, 09:05 UTCJun 9, 11:45 UTC2h 40m
2026-06-08 ALK405 BKK → CMB Jun 8, 07:10 UTCJun 8, 07:30 UTC20m
2026-06-07 ALK186 LHE → CMB Jun 7, 13:50 UTCJun 8, 05:35 UTC15h 45m
2026-06-07 ALK185 CMB → LHE Jun 7, 02:25 UTCJun 7, 11:45 UTC9h 20m
2026-06-06 ALK306 CMB → SIN Jun 6, 11:19 UTCJun 7, 00:14 UTC12h 55m
2026-06-06 ALK127 CMB → MAA Jun 6, 09:00 UTCJun 6, 09:30 UTC30m
2026-06-06 ALK152 KHI → CMB Jun 6, 03:00 UTCJun 6, 04:50 UTC1h 50m
2026-06-05 ALK151 CMB → KHI Jun 5, 22:00 UTCJun 6, 00:20 UTC2h 20m
2026-06-05 ALK151 CMB → KHI Jun 5, 00:45 UTCJun 5, 23:45 UTC23h 0m
2026-06-04 ALK402 CMB → BKK Jun 4, 22:30 UTCJun 4, 23:10 UTC40m
2026-06-04 ALK402 CMB → BKK Jun 4, 01:00 UTCJun 4, 23:10 UTC22h 10m
2026-06-03 ALK402 CMB → BKK Jun 3, 22:25 UTCJun 3, 22:55 UTC30m
2026-06-03 ALK402 CMB → BKK Jun 3, 02:10 UTCJun 3, 22:55 UTC20h 45m
2026-06-03 ALK192 DEL → CMB Jun 3, 00:05 UTCJun 3, 22:55 UTC22h 50m
2026-06-02 ALK191 CMB → DEL Jun 2, 22:15 UTCJun 2, 22:30 UTC15m
2026-06-02 ALK191 CMB → DEL Jun 2, 20:00 UTCJun 2, 20:20 UTC20m
2026-06-02 ALK184 - Jun 2, 13:20 UTCJun 2, 15:50 UTC2h 30m
2026-06-02 ALK183 CMB → KHI Jun 2, 09:00 UTCJun 2, 11:20 UTC2h 20m
2026-06-02 ALK166 COK → CMB Jun 2, 04:45 UTCJun 2, 05:15 UTC30m
2026-06-02 ALK165 CMB → COK Jun 2, 03:00 UTCJun 2, 03:40 UTC40m
2026-06-01 ALK175 CMB → HYD Jun 1, 13:05 UTCJun 1, 16:10 UTC3h 5m
2026-05-30 ALK152 KHI → CMB May 30, 02:30 UTCMay 30, 05:00 UTC2h 30m
2026-05-29 ALK151 CMB → KHI May 29, 22:10 UTCMay 30, 00:35 UTC2h 25m
2026-05-28 ALK192 DEL → CMB May 28, 00:20 UTCMay 28, 02:25 UTC2h 5m
2026-05-27 ALK191 CMB → DEL May 27, 20:10 UTCMay 27, 22:50 UTC2h 40m
2026-05-25 ALK162 TRV → CMB May 25, 04:35 UTCMay 25, 04:55 UTC20m
2026-05-25 ALK161 CMB → TRV May 25, 03:05 UTCMay 25, 03:30 UTC25m
2026-05-21 ALK403 BKK → CMB May 21, 00:50 UTCMay 21, 01:20 UTC30m
2026-05-20 ALK402 CMB → BKK May 20, 22:25 UTCMay 20, 23:05 UTC40m
2026-05-19 ALK405 BKK → CMB May 19, 07:05 UTCMay 19, 07:35 UTC30m
2026-05-19 ALK404 CMB → BKK May 19, 04:55 UTCMay 19, 05:25 UTC30m
2026-05-16 ALK1174 BLR → CMB May 16, 04:40 UTCMay 16, 05:00 UTC20m
2026-05-15 ALK172 BLR → CMB May 15, 16:05 UTCMay 16, 03:20 UTC11h 15m
2026-05-15 ALK307 SIN → CMB May 15, 02:25 UTCMay 15, 14:30 UTC12h 5m
2026-05-14 ALK144 BOM → CMB May 14, 12:30 UTCMay 15, 00:15 UTC11h 45m
2026-05-14 ALK166 COK → CMB May 14, 05:20 UTCMay 14, 05:50 UTC30m
2026-05-14 ALK165 CMB → COK May 14, 03:40 UTCMay 14, 04:00 UTC20m
2026-05-13 ALK168 COK → CMB May 13, 10:40 UTCMay 13, 11:15 UTC35m

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

Mode-S 77044F frequently asked

What is Mode-S code 77044F?
77044F is an ICAO 24-bit transponder address. Allocated to Sri Lanka. Assigned to 4R-ABO.
Where is Mode-S 77044F registered?
Mode-S code 77044F 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 77044F broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 77044F, octal 35602117, decimal 7,799,887.
What flights does 77044F operate?
Mode-S 77044F has broadcast 20 distinct callsigns, including ALK191, ALK192, ALK402, ALK152, ALK195.