Apparatus

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sensors Mode-S transponder

789291

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-HPS · AIRBUS A-321neo

Hex
789291
Octal
36111221
Decimal
7,901,841
Country
CN
Tail
B-HPS
Type
A21N
No current signal · last broadcast Jul 25, 13:30 UTC
Flights observed
412
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 13:30 UTC

Last known position

Most recent position reported by Mode-S 789291.

Country allocation

The ICAO 24-bit address 789291 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China 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
CPA513 Cathay Pacific 24 2026-07-23
CPA439 Cathay Pacific 14 2026-07-18
CPA732 - 12 2026-07-10
CPA512 Cathay Pacific 12 2026-07-23
CPA427 - 12 2026-06-20
CPA426 - 11 2026-06-20
CPA733 - 10 2026-07-10
CPA395 Cathay Pacific 10 2026-07-24
CPA340 Cathay Pacific 10 2026-07-24
CPA916 Cathay Pacific 9 2026-07-23
CPA563 - 9 2026-07-02
CPA529 - 9 2026-07-21
CPA917 Cathay Pacific 8 2026-07-24
CPA717 Cathay Pacific 8 2026-07-22
CPA708 - 8 2026-07-04
CPA706 Cathay Pacific 8 2026-07-24
CPA434 Cathay Pacific 8 2026-07-18
CPA385 - 8 2026-07-25
CPA384 - 8 2026-07-25
CPA775 Cathay Pacific 7 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CPA532 HKG → NGO Jul 25, 10:15 UTCJul 25, 13:30 UTC3h 15m
2026-07-25 CPA385 - Jul 25, 05:40 UTCJul 25, 06:00 UTC20m
2026-07-25 CPA384 - Jul 25, 00:55 UTCJul 25, 01:40 UTC45m
2026-07-24 CPA395 PEK → HKG Jul 24, 22:05 UTCJul 24, 22:40 UTC35m
2026-07-24 CPA395 PEK → HKG Jul 24, 19:30 UTCJul 24, 20:15 UTC45m
2026-07-24 CPA340 HKG → PEK Jul 24, 14:30 UTCJul 24, 17:10 UTC2h 40m
2026-07-24 CPA706 BKK → HKG Jul 24, 12:20 UTCJul 24, 12:40 UTC20m
2026-07-24 CPA706 BKK → HKG Jul 24, 10:10 UTCJul 24, 10:40 UTC30m
2026-07-24 CPA775 HKG → BKK Jul 24, 08:05 UTCJul 24, 08:45 UTC40m
2026-07-24 CPA775 HKG → BKK Jul 24, 06:10 UTCJul 24, 06:25 UTC15m
2026-07-24 CPA917 TFU → HKG Jul 24, 01:50 UTCJul 24, 02:25 UTC35m
2026-07-23 CPA916 HKG → TFU Jul 23, 11:55 UTCJul 23, 12:10 UTC15m
2026-07-23 CPA513 FUK → HKG Jul 23, 05:20 UTCJul 23, 08:10 UTC2h 50m
2026-07-23 CPA512 HKG → FUK Jul 23, 00:35 UTCJul 23, 03:40 UTC3h 5m
2026-07-22 CPA469 TPE → HKG Jul 22, 14:45 UTCJul 22, 16:05 UTC1h 20m
2026-07-22 CPA464 - Jul 22, 11:50 UTCJul 22, 13:25 UTC1h 35m
2026-07-22 CPA717 HKG → BKK Jul 22, 02:10 UTCJul 22, 03:55 UTC1h 45m
2026-07-22 CPA717 HKG → BKK Jul 22, 01:20 UTCJul 22, 01:35 UTC15m
2026-07-21 CPA529 - Jul 21, 09:20 UTCJul 21, 12:10 UTC2h 50m
2026-07-21 CPA528 - Jul 21, 06:20 UTCJul 21, 06:40 UTC20m
2026-07-21 CPA528 - Jul 21, 03:45 UTCJul 21, 05:10 UTC1h 25m
2026-07-20 CPA778 - Jul 20, 14:20 UTCJul 20, 14:35 UTC15m
2026-07-20 CPA773 - Jul 20, 09:00 UTCJul 20, 12:30 UTC3h 30m
2026-07-20 CPA773 - Jul 20, 07:00 UTCJul 20, 07:15 UTC15m
2026-07-20 CPA477 TPE → HKG Jul 20, 02:50 UTCJul 20, 04:25 UTC1h 35m
2026-07-20 CPA422 HKG → TPE Jul 20, 00:00 UTCJul 20, 01:25 UTC1h 25m
2026-07-19 CPA569 - Jul 19, 10:45 UTCJul 19, 14:05 UTC3h 20m
2026-07-19 CPA598 HKG → KIX Jul 19, 05:30 UTCJul 19, 08:55 UTC3h 25m
2026-07-19 CPA917 TFU → HKG Jul 19, 01:50 UTCJul 19, 02:30 UTC40m
2026-07-18 CPA916 HKG → TFU Jul 18, 11:45 UTCJul 18, 12:05 UTC20m
2026-07-18 CPA439 ICN → HKG Jul 18, 05:15 UTCJul 18, 08:15 UTC3h 0m
2026-07-18 CPA434 HKG → ICN Jul 18, 00:35 UTCJul 18, 03:50 UTC3h 16m
2026-07-17 CPA395 PEK → HKG Jul 17, 19:35 UTCJul 17, 22:25 UTC2h 50m
2026-07-17 CPA340 - Jul 17, 14:30 UTCJul 17, 14:44 UTC15m
2026-07-17 CPA774 - Jul 17, 07:50 UTCJul 17, 08:10 UTC20m
2026-07-17 CPA774 - Jul 17, 05:35 UTCJul 17, 05:50 UTC15m
2026-07-17 CPA717 - Jul 17, 03:39 UTCJul 17, 03:55 UTC15m
2026-07-17 CPA717 - Jul 17, 01:29 UTCJul 17, 01:45 UTC15m
2026-07-16 CPA931 - Jul 16, 14:25 UTCJul 16, 14:50 UTC25m
2026-07-16 CPA938 - Jul 16, 10:15 UTCJul 16, 10:35 UTC20m
2026-07-16 CPA439 - Jul 16, 05:30 UTCJul 16, 08:40 UTC3h 10m
2026-07-16 CPA434 HKG → ICN Jul 16, 00:40 UTCJul 16, 04:00 UTC3h 20m
2026-07-15 CPA778 - Jul 15, 15:45 UTCJul 15, 16:05 UTC20m
2026-07-15 CPA773 - Jul 15, 08:40 UTCJul 15, 13:45 UTC5h 5m
2026-07-15 CPA773 - Jul 15, 07:55 UTCJul 15, 08:05 UTC10m
2026-07-14 CPA304 - Jul 14, 12:10 UTCJul 15, 02:00 UTC13h 49m
2026-07-14 CPA443 TPE → HKG Jul 14, 09:10 UTCJul 14, 10:25 UTC1h 15m
2026-07-14 CPA400 HKG → TPE Jul 14, 05:55 UTCJul 14, 07:25 UTC1h 30m
2026-07-14 CPA917 - Jul 14, 02:00 UTCJul 14, 02:25 UTC25m
2026-07-13 CPA916 - Jul 13, 11:35 UTCJul 13, 11:55 UTC20m

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 B-HPS page for operator, model, and routing details .

Mode-S 789291 frequently asked

What is Mode-S code 789291?
789291 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-HPS.
Where is Mode-S 789291 registered?
Mode-S code 789291 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 789291 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 13:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 789291, octal 36111221, decimal 7,901,841.
What flights does 789291 operate?
Mode-S 789291 has broadcast 20 distinct callsigns, including CPA513, CPA439, CPA732, CPA512, CPA427.