Apparatus

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sensors Mode-S transponder

471A7F

ICAO 24-bit transponder address · allocated to Hungary

Currently assigned to HA-KAX · ATR-72-202

Hex
471A7F
Octal
21615177
Decimal
4,659,839
Country
HU
Tail
HA-KAX
Type
AT72
No current signal · last broadcast 1h ago
Flights observed
63
Distinct callsigns
4
Country
HU
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 471A7F.

Country allocation

The ICAO 24-bit address 471A7F falls within the block assigned to Hungary (HU) by ICAO Annex 10, Volume III. Every aircraft registered in Hungary 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 4 distinct

Callsign Airline Flights Last seen
SRN6933 Sirair 30 2026-06-02
SRN6932 Sirair 30 2026-06-02
SRN6261 Sirair 2 2026-05-12
FRF130 - 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 SRN6933 GVA → CGN Jun 2, 19:25 UTCJun 2, 19:45 UTC20m
2026-06-02 SRN6932 CGN → GVA Jun 2, 03:05 UTCJun 2, 04:25 UTC1h 20m
2026-06-01 SRN6933 GVA → CGN Jun 1, 19:25 UTCJun 1, 20:40 UTC1h 15m
2026-05-29 SRN6932 CGN → GVA May 29, 02:55 UTCMay 29, 04:15 UTC1h 20m
2026-05-28 SRN6933 GVA → CGN May 28, 19:25 UTCMay 28, 20:55 UTC1h 30m
2026-05-28 SRN6932 CGN → GVA May 28, 02:55 UTCMay 28, 04:25 UTC1h 30m
2026-05-27 SRN6933 GVA → CGN May 27, 19:25 UTCMay 27, 20:45 UTC1h 20m
2026-05-27 SRN6932 CGN → GVA May 27, 03:04 UTCMay 27, 04:30 UTC1h 25m
2026-05-26 SRN6933 GVA → CGN May 26, 19:30 UTCMay 26, 20:45 UTC1h 15m
2026-05-26 SRN6932 CGN → GVA May 26, 02:49 UTCMay 26, 04:15 UTC1h 25m
2026-05-22 SRN6933 GVA → CGN May 22, 19:30 UTCMay 22, 20:45 UTC1h 15m
2026-05-22 SRN6932 CGN → GVA May 22, 02:45 UTCMay 22, 04:10 UTC1h 25m
2026-05-21 SRN6933 GVA → CGN May 21, 19:25 UTCMay 21, 20:40 UTC1h 15m
2026-05-21 SRN6932 CGN → GVA May 21, 03:50 UTCMay 21, 04:25 UTC35m
2026-05-21 SRN6932 CGN → GVA May 21, 03:10 UTCMay 21, 03:45 UTC35m
2026-05-20 SRN6933 GVA → CGN May 20, 19:15 UTCMay 20, 20:35 UTC1h 20m
2026-05-20 SRN6932 CGN → GVA May 20, 02:55 UTCMay 20, 04:15 UTC1h 20m
2026-05-19 SRN6933 GVA → CGN May 19, 19:35 UTCMay 19, 21:00 UTC1h 25m
2026-05-19 SRN6932 CGN → GVA May 19, 03:05 UTCMay 19, 04:20 UTC1h 15m
2026-05-18 SRN6933 GVA → CGN May 18, 19:35 UTCMay 18, 20:50 UTC1h 15m
2026-05-15 SRN6932 CGN → GVA May 15, 02:40 UTCMay 15, 04:05 UTC1h 25m
2026-05-13 SRN6933 GVA → CGN May 13, 19:25 UTCMay 13, 20:35 UTC1h 10m
2026-05-13 SRN6932 CGN → GVA May 13, 02:45 UTCMay 13, 04:05 UTC1h 20m
2026-05-12 SRN6261 EAP → CGN May 12, 20:45 UTCMay 12, 21:55 UTC1h 10m
2026-05-12 SRN6933 GVA → CGN May 12, 19:20 UTCMay 12, 20:01 UTC40m
2026-05-12 SRN6932 CGN → GVA May 12, 03:15 UTCMay 12, 04:20 UTC1h 5m
2026-05-11 SRN6933 GVA → CGN May 11, 19:25 UTCMay 11, 20:45 UTC1h 20m
2026-05-11 SRN6932 CGN → GVA May 11, 02:40 UTCMay 11, 04:05 UTC1h 25m
2026-05-08 SRN6933 GVA → CGN May 8, 19:30 UTCMay 8, 20:45 UTC1h 15m
2026-05-08 SRN6932 CGN → GVA May 8, 02:49 UTCMay 8, 04:09 UTC1h 20m
2026-05-07 SRN6933 GVA → CGN May 7, 19:35 UTCMay 7, 20:45 UTC1h 10m
2026-05-07 SRN6932 CGN → GVA May 7, 02:55 UTCMay 7, 04:10 UTC1h 15m
2026-05-06 SRN6933 GVA → CGN May 6, 19:25 UTCMay 6, 20:40 UTC1h 15m
2026-05-06 SRN6932 CGN → GVA May 6, 03:10 UTCMay 6, 04:30 UTC1h 20m
2026-05-05 SRN6933 GVA → CGN May 5, 19:25 UTCMay 5, 20:50 UTC1h 25m
2026-05-05 SRN6932 CGN → GVA May 5, 02:50 UTCMay 5, 04:05 UTC1h 15m
2026-05-04 SRN6933 GVA → CGN May 4, 19:25 UTCMay 4, 20:40 UTC1h 15m
2026-05-04 SRN6932 CGN → GVA May 4, 02:39 UTCMay 4, 04:09 UTC1h 30m
2026-05-01 SRN6933 GVA → CGN May 1, 19:45 UTCMay 1, 21:00 UTC1h 15m
2026-05-01 SRN6932 CGN → GVA May 1, 02:40 UTCMay 1, 04:05 UTC1h 25m
2026-04-30 SRN6933 GVA → CGN Apr 30, 19:25 UTCApr 30, 20:40 UTC1h 15m
2026-04-30 SRN6932 CGN → GVA Apr 30, 03:15 UTCApr 30, 04:35 UTC1h 20m
2026-04-29 SRN6933 GVA → CGN Apr 29, 19:20 UTCApr 29, 20:35 UTC1h 15m
2026-04-29 SRN6932 CGN → GVA Apr 29, 02:50 UTCApr 29, 04:15 UTC1h 25m
2026-04-28 SRN6933 GVA → CGN Apr 28, 19:25 UTCApr 28, 20:40 UTC1h 15m
2026-04-28 SRN6932 CGN → GVA Apr 28, 02:50 UTCApr 28, 04:05 UTC1h 15m
2026-04-27 SRN6933 GVA → CGN Apr 27, 19:25 UTCApr 27, 20:40 UTC1h 15m
2026-04-24 SRN6932 CGN → GVA Apr 24, 03:00 UTCApr 24, 04:20 UTC1h 20m
2026-04-23 SRN6933 GVA → CGN Apr 23, 19:25 UTCApr 23, 20:40 UTC1h 15m
2026-04-23 SRN6932 CGN → GVA Apr 23, 02:35 UTCApr 23, 04:05 UTC1h 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 HA-KAX page for operator, model, and routing details .

Mode-S 471A7F frequently asked

What is Mode-S code 471A7F?
471A7F is an ICAO 24-bit transponder address. Allocated to Hungary. Assigned to HA-KAX.
Where is Mode-S 471A7F registered?
Mode-S code 471A7F is allocated to Hungary (HU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 471A7F broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 471A7F, octal 21615177, decimal 4,659,839.
What flights does 471A7F operate?
Mode-S 471A7F has broadcast 4 distinct callsigns, including SRN6933, SRN6932, SRN6261, FRF130.