Apparatus

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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
No current signal · last broadcast 1d ago
Flights observed
209
Distinct callsigns
20
Country
LK
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 77058E.

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 - 44 2026-07-06
ALK605 - 25 2026-07-06
ALK455 - 20 2026-06-16
ALK454 SriLankan Airlines 14 2026-06-15
ALK89L - 9 2026-06-14
ALK308 - 9 2026-07-09
ALK607 - 8 2026-07-07
ALK606 - 8 2026-07-06
ALK558 - 7 2026-07-10
ALK557 - 7 2026-07-09
ALK501 - 7 2026-06-24
ALK504 - 5 2026-07-11
ALK26L - 5 2026-07-12
ALK266 - 5 2026-07-04
ALK90L SriLankan Airlines 4 2026-06-13
ALK142 SriLankan Airlines 4 2026-05-28
ALK101 SriLankan Airlines 4 2026-05-24
ALK503 - 3 2026-07-11
ALK470 SriLankan Airlines 3 2026-06-16
ALK141 SriLankan Airlines 3 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 ALK26L - Jul 12, 19:25 UTCJul 12, 23:15 UTC3h 50m
2026-07-11 ALK504 - Jul 11, 21:35 UTCJul 12, 17:10 UTC19h 35m
2026-07-11 ALK504 - Jul 11, 21:05 UTCJul 12, 17:10 UTC20h 5m
2026-07-11 ALK503 - Jul 11, 11:20 UTCJul 11, 18:55 UTC7h 35m
2026-07-11 ALK503 - Jul 11, 08:10 UTCJul 11, 08:40 UTC30m
2026-07-10 ALK558 - Jul 10, 15:40 UTCJul 11, 00:05 UTC8h 25m
2026-07-09 ALK557 - Jul 9, 12:45 UTCJul 10, 05:00 UTC16h 15m
2026-07-09 ALK308 - Jul 9, 09:50 UTCJul 9, 11:00 UTC1h 10m
2026-07-08 ALK558 - Jul 8, 14:40 UTCJul 8, 23:20 UTC8h 40m
2026-07-08 ALK557 - Jul 8, 02:05 UTCJul 8, 05:15 UTC3h 10m
2026-07-07 ALK557 - Jul 7, 19:10 UTCJul 8, 02:00 UTC6h 50m
2026-07-07 ALK607 - Jul 7, 06:30 UTCJul 7, 08:30 UTC2h 0m
2026-07-06 ALK606 - Jul 6, 09:45 UTCJul 7, 04:40 UTC18h 55m
2026-07-06 ALK605 - Jul 6, 07:35 UTCJul 7, 04:40 UTC21h 5m
2026-07-06 ALK605 MEL → SYD Jul 6, 06:40 UTCJul 7, 04:40 UTC22h 0m
2026-07-06 ALK604 - Jul 6, 03:10 UTCJul 6, 04:20 UTC1h 10m
2026-07-05 ALK604 - Jul 5, 07:35 UTCJul 6, 04:20 UTC20h 45m
2026-07-05 ALK605 MEL → MEL Jul 5, 06:30 UTCJul 6, 04:20 UTC21h 50m
2026-07-04 ALK604 - Jul 4, 12:45 UTCJul 5, 04:20 UTC15h 35m
2026-07-04 ALK308 - Jul 4, 10:00 UTCJul 4, 10:55 UTC55m
2026-07-04 ALK266 - Jul 4, 00:30 UTCJul 4, 01:15 UTC45m
2026-07-03 ALK265 CMB → RUH Jul 3, 04:15 UTCJul 3, 21:55 UTC17h 40m
2026-07-02 ALK504 - Jul 2, 23:35 UTCJul 3, 21:55 UTC22h 20m
2026-07-02 ALK504 - Jul 2, 21:35 UTCJul 3, 21:30 UTC23h 55m
2026-07-02 ALK504 - Jul 2, 20:55 UTCJul 3, 18:10 UTC21h 15m
2026-07-02 ALK503 - Jul 2, 08:00 UTCJul 2, 18:50 UTC10h 50m
2026-07-01 ALK564 - Jul 1, 14:55 UTCJul 2, 05:40 UTC14h 45m
2026-06-30 ALK563 - Jun 30, 20:35 UTCJul 1, 06:55 UTC10h 20m
2026-06-30 ALK605 - Jun 30, 06:40 UTCJun 30, 10:45 UTC4h 5m
2026-06-29 ALK604 - Jun 29, 12:55 UTCJun 30, 04:35 UTC15h 41m
2026-06-29 ALK604 - Jun 29, 07:34 UTCJun 30, 04:35 UTC21h 1m
2026-06-29 ALK605 MEL → MEL Jun 29, 06:44 UTCJun 30, 04:35 UTC21h 51m
2026-06-28 ALK604 - Jun 28, 10:00 UTCJun 29, 04:45 UTC18h 45m
2026-06-28 ALK604 - Jun 28, 07:44 UTCJun 29, 04:45 UTC21h 0m
2026-06-28 ALK604 SYD → MEL Jun 28, 06:24 UTCJun 29, 04:45 UTC22h 20m
2026-06-27 ALK606 CMB → SYD Jun 27, 12:29 UTCJun 28, 04:35 UTC16h 5m
2026-06-27 ALK308 - Jun 27, 09:40 UTCJun 27, 10:45 UTC1h 5m
2026-06-26 ALK308 - Jun 26, 13:34 UTCJun 27, 10:45 UTC21h 10m
2026-06-26 ALK308 - Jun 26, 13:24 UTCJun 27, 10:45 UTC21h 20m
2026-06-26 ALK607 SYD → CMB Jun 26, 06:35 UTCJun 26, 13:40 UTC7h 5m
2026-06-25 ALK606 CMB → SYD Jun 25, 12:50 UTCJun 26, 04:34 UTC15h 45m
2026-06-24 ALK501 - Jun 24, 16:45 UTCJun 25, 10:39 UTC17h 55m
2026-06-24 ALK501 - Jun 24, 13:30 UTCJun 24, 14:15 UTC45m
2026-06-23 ALK501 - Jun 23, 22:19 UTCJun 24, 08:55 UTC10h 35m
2026-06-23 ALK605 - Jun 23, 06:24 UTCJun 23, 10:04 UTC3h 40m
2026-06-22 ALK604 - Jun 22, 11:14 UTCJun 23, 04:19 UTC17h 5m
2026-06-22 ALK604 - Jun 22, 08:35 UTCJun 23, 04:19 UTC19h 45m
2026-06-21 ALK501 - Jun 21, 15:34 UTCJun 22, 11:24 UTC19h 50m
2026-06-21 ALK501 - Jun 21, 13:59 UTCJun 22, 11:24 UTC21h 25m
2026-06-21 ALK501 - Jun 21, 11:05 UTCJun 21, 11:49 UTC45m

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 .

Mode-S 77058E frequently asked

What is Mode-S code 77058E?
77058E is an ICAO 24-bit transponder address. Allocated to Sri Lanka. Assigned to 4R-ALN.
Where is Mode-S 77058E registered?
Mode-S code 77058E 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 77058E 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 77058E, octal 35602616, decimal 7,800,206.
What flights does 77058E operate?
Mode-S 77058E has broadcast 20 distinct callsigns, including ALK604, ALK605, ALK455, ALK454, ALK89L.