Apparatus

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sensors Mode-S transponder

7505C5

ICAO 24-bit transponder address · allocated to Malaysia

Hex
7505C5
Octal
35202705
Decimal
7,669,189
Country
MY
Broadcasting now · callsign ALK253 · 24,000 ft
Flights observed
54
Distinct callsigns
20
Country
MY
Last broadcast
21d ago

Current position

7505C5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7505C5 falls within the block assigned to Malaysia (MY) by ICAO Annex 10, Volume III. Every aircraft registered in Malaysia 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
ALK314 SriLankan Airlines 6 2026-07-26
ALK218 SriLankan Airlines 6 2026-07-24
ALK142 - 6 2026-07-11
ALK217 SriLankan Airlines 4 2026-07-25
ALK404 SriLankan Airlines 3 2026-07-20
ALK315 SriLankan Airlines 3 2026-07-26
ALK141 - 3 2026-07-11
ALK253 - 2 2026-07-18
ALK191 SriLankan Airlines 2 2026-07-23
ALK1174 SriLankan Airlines 2 2026-07-25
ALK90L - 1 2026-07-03
ALK405 - 1 2026-07-15
ALK365 - 1 2026-07-12
ALK230 - 1 2026-07-19
ALK192 SriLankan Airlines 1 2026-07-22
ALK177 SriLankan Airlines 1 2026-07-17
ALK174 - 1 2026-07-20
ALK173 - 1 2026-07-20
ALK166 - 1 2026-07-07
ALK165 - 1 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ALK315 KUL → CMB Jul 26, 07:30 UTCJul 26, 07:55 UTC25m
2026-07-26 ALK314 CMB → KUL Jul 26, 05:15 UTCJul 26, 05:45 UTC30m
2026-07-25 ALK217 CMB → DOH Jul 25, 13:55 UTCJul 25, 18:00 UTC4h 5m
2026-07-25 ALK1174 BLR → CMB Jul 25, 05:00 UTCJul 25, 05:10 UTC10m
2026-07-25 ALK1173 CMB → BLR Jul 25, 03:00 UTCJul 25, 03:25 UTC25m
2026-07-24 ALK218 DOH → CMB Jul 24, 19:50 UTCJul 25, 00:05 UTC4h 15m
2026-07-24 ALK217 CMB → DOH Jul 24, 06:05 UTCJul 24, 18:25 UTC12h 20m
2026-07-23 ALK191 CMB → DEL Jul 23, 08:20 UTCJul 23, 22:35 UTC14h 15m
2026-07-22 ALK218 DOH → CMB Jul 22, 13:40 UTCJul 22, 23:55 UTC10h 15m
2026-07-22 ALK192 DEL → CMB Jul 22, 00:10 UTCJul 22, 02:25 UTC2h 15m
2026-07-20 ALK174 - Jul 20, 22:15 UTCJul 20, 22:45 UTC30m
2026-07-20 ALK173 - Jul 20, 20:05 UTCJul 20, 20:45 UTC40m
2026-07-20 ALK404 CMB → BKK Jul 20, 05:15 UTCJul 20, 05:45 UTC30m
2026-07-19 ALK230 - Jul 19, 12:15 UTCJul 19, 23:35 UTC11h 20m
2026-07-18 ALK253 - Jul 18, 13:40 UTCJul 18, 17:55 UTC4h 15m
2026-07-18 ALK1174 - Jul 18, 04:50 UTCJul 18, 05:25 UTC35m
2026-07-17 ALK177 CMB → HYD Jul 17, 06:10 UTCJul 17, 08:54 UTC2h 45m
2026-07-16 ALK253 - Jul 16, 13:40 UTCJul 16, 17:45 UTC4h 5m
2026-07-16 ALK314 - Jul 16, 05:10 UTCJul 16, 05:45 UTC35m
2026-07-15 ALK405 - Jul 15, 08:45 UTCJul 15, 10:00 UTC1h 15m
2026-07-15 ALK404 - Jul 15, 05:15 UTCJul 15, 05:45 UTC30m
2026-07-14 ALK404 - Jul 14, 10:55 UTCJul 15, 05:45 UTC18h 49m
2026-07-13 ALK165 - Jul 13, 13:50 UTCJul 14, 03:35 UTC13h 45m
2026-07-12 ALK191 - Jul 12, 16:10 UTCJul 12, 22:30 UTC6h 20m
2026-07-12 ALK365 - Jul 12, 08:10 UTCJul 12, 08:25 UTC15m
2026-07-11 ALK142 - Jul 11, 22:45 UTCJul 11, 23:40 UTC55m
2026-07-11 ALK142 - Jul 11, 22:01 UTCJul 11, 22:10 UTC10m
2026-07-11 ALK141 - Jul 11, 20:10 UTCJul 11, 20:25 UTC15m
2026-07-11 ALK141 - Jul 11, 18:35 UTCJul 11, 19:35 UTC1h 0m
2026-07-10 ALK218 - Jul 10, 20:10 UTCJul 10, 23:45 UTC3h 35m
2026-07-09 ALK218 - Jul 9, 23:20 UTCJul 10, 23:15 UTC23h 55m
2026-07-09 ALK142 - Jul 9, 22:40 UTCJul 9, 23:40 UTC1h 0m
2026-07-09 ALK142 - Jul 9, 21:55 UTCJul 9, 22:05 UTC10m
2026-07-09 ALK315 - Jul 9, 07:20 UTCJul 9, 07:45 UTC25m
2026-07-08 ALK217 CMB → DOH Jul 8, 14:05 UTCJul 8, 18:05 UTC4h 0m
2026-07-08 ALK314 - Jul 8, 05:15 UTCJul 8, 05:40 UTC25m
2026-07-07 ALK142 - Jul 7, 22:40 UTCJul 7, 23:40 UTC1h 0m
2026-07-07 ALK142 - Jul 7, 21:55 UTCJul 7, 22:05 UTC10m
2026-07-07 ALK166 - Jul 7, 05:05 UTCJul 7, 07:40 UTC2h 35m
2026-07-06 ALK218 - Jul 6, 19:40 UTCJul 6, 23:55 UTC4h 15m
2026-07-06 ALK217 CMB → DOH Jul 6, 10:45 UTCJul 6, 17:55 UTC7h 10m
2026-07-06 ALK162 - Jul 6, 04:50 UTCJul 6, 05:10 UTC20m
2026-07-06 ALK161 - Jul 6, 03:00 UTCJul 6, 03:30 UTC30m
2026-07-05 ALK315 - Jul 5, 08:00 UTCJul 5, 14:45 UTC6h 45m
2026-07-05 ALK314 - Jul 5, 05:10 UTCJul 5, 05:50 UTC40m
2026-07-04 ALK314 - Jul 4, 07:25 UTCJul 5, 05:50 UTC22h 25m
2026-07-04 ALK314 - Jul 4, 05:10 UTCJul 4, 05:50 UTC40m
2026-07-03 ALK141 - Jul 3, 20:30 UTCJul 3, 20:40 UTC10m
2026-07-03 ALK90L - Jul 3, 07:50 UTCJul 3, 19:40 UTC11h 50m
2026-07-02 ALK128 MAA → CMB Jul 2, 11:25 UTCJul 2, 11:40 UTC15m

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.

Mode-S 7505C5 frequently asked

What is Mode-S code 7505C5?
7505C5 is an ICAO 24-bit transponder address. Allocated to Malaysia.
Where is Mode-S 7505C5 registered?
Mode-S code 7505C5 is allocated to Malaysia (MY). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7505C5 broadcasting right now?
Yes. Mode-S 7505C5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7505C5, octal 35202705, decimal 7,669,189.
What flights does 7505C5 operate?
Mode-S 7505C5 has broadcast 20 distinct callsigns, including ALK314, ALK218, ALK142, ALK217, ALK404.