Apparatus

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sensors Mode-S transponder

78924A

ICAO 24-bit transponder address · allocated to China

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

Hex
78924A
Octal
36111112
Decimal
7,901,770
Country
CN
Tail
B-HPE
Type
A21N
Broadcasting now · callsign CPA778 · 29,825 ft
Flights observed
402
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 22:30 UTC

Current position

78924A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 78924A 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
CPA774 - 19 2026-07-12
CPA708 - 17 2026-07-06
CPA729 Cathay Pacific 15 2026-07-25
CPA956 Cathay Pacific 13 2026-07-24
CPA751 - 13 2026-07-06
CPA730 - 13 2026-07-15
CPA717 - 13 2026-07-12
CPA732 Cathay Pacific 10 2026-07-26
CPA569 Cathay Pacific 10 2026-07-21
CPA563 - 10 2026-06-26
CPA513 - 10 2026-07-16
CPA955 Cathay Pacific 9 2026-07-24
CPA304 Cathay Pacific 9 2026-07-20
CPA775 Cathay Pacific 8 2026-07-19
CPA706 - 8 2026-07-19
CPA598 Cathay Pacific 8 2026-07-21
CPA733 Cathay Pacific 7 2026-07-19
CPA532 - 7 2026-06-25
CPA469 Cathay Pacific 7 2026-06-16
CPA439 - 7 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CPA732 KUL → HKG Jul 26, 22:15 UTCJul 26, 22:30 UTC15m
2026-07-26 CPA732 KUL → HKG Jul 26, 19:00 UTCJul 26, 19:25 UTC25m
2026-07-25 CPA729 HKG → KUL Jul 25, 13:50 UTCJul 25, 14:15 UTC25m
2026-07-25 CPA729 HKG → KUL Jul 25, 11:00 UTCJul 25, 11:15 UTC15m
2026-07-25 CPA917 TFU → HKG Jul 25, 02:10 UTCJul 25, 02:30 UTC20m
2026-07-24 CPA916 HKG → TFU Jul 24, 11:40 UTCJul 24, 11:55 UTC15m
2026-07-24 CPA955 NGB → HKG Jul 24, 08:45 UTCJul 24, 09:00 UTC15m
2026-07-24 CPA955 NGB → HKG Jul 24, 07:35 UTCJul 24, 07:50 UTC15m
2026-07-24 CPA956 HKG → NGB Jul 24, 04:00 UTCJul 24, 05:25 UTC1h 25m
2026-07-23 CPA307 - Jul 23, 13:50 UTCJul 23, 14:05 UTC15m
2026-07-23 CPA396 - Jul 23, 09:45 UTCJul 23, 10:25 UTC40m
2026-07-23 CPA945 CKG → HKG Jul 23, 05:30 UTCJul 23, 06:00 UTC30m
2026-07-23 CPA928 HKG → CKG Jul 23, 00:30 UTCJul 23, 00:50 UTC20m
2026-07-22 CPA979 XMN → HKG Jul 22, 13:40 UTCJul 22, 14:00 UTC20m
2026-07-22 CPA771 HKG → HKT Jul 22, 01:45 UTCJul 22, 03:40 UTC1h 55m
2026-07-22 CPA771 HKG → HKT Jul 22, 00:55 UTCJul 22, 01:10 UTC15m
2026-07-21 CPA569 KIX → HKG Jul 21, 10:45 UTCJul 21, 14:05 UTC3h 20m
2026-07-21 CPA598 HKG → KIX Jul 21, 05:30 UTCJul 21, 08:55 UTC3h 25m
2026-07-20 CPA304 HKG → NKG Jul 20, 12:00 UTCJul 21, 02:20 UTC14h 19m
2026-07-20 CPA385 - Jul 20, 05:50 UTCJul 20, 06:55 UTC1h 5m
2026-07-20 CPA384 - Jul 20, 01:55 UTCJul 20, 02:15 UTC20m
2026-07-19 CPA732 KUL → HKG Jul 19, 22:10 UTCJul 19, 22:35 UTC25m
2026-07-19 CPA732 KUL → HKG Jul 19, 19:05 UTCJul 19, 19:35 UTC30m
2026-07-19 CPA733 HKG → KUL Jul 19, 16:55 UTCJul 19, 17:20 UTC25m
2026-07-19 CPA733 HKG → KUL Jul 19, 14:05 UTCJul 19, 14:20 UTC15m
2026-07-19 CPA706 - Jul 19, 11:50 UTCJul 19, 12:10 UTC20m
2026-07-19 CPA706 - Jul 19, 09:35 UTCJul 19, 09:50 UTC15m
2026-07-19 CPA775 HKG → BKK Jul 19, 07:50 UTCJul 19, 08:10 UTC20m
2026-07-19 CPA775 HKG → BKK Jul 19, 05:40 UTCJul 19, 05:55 UTC15m
2026-07-18 CPA304 HKG → NKG Jul 18, 12:10 UTCJul 19, 02:20 UTC14h 10m
2026-07-18 CPA956 HKG → HKG Jul 18, 03:45 UTCJul 18, 09:00 UTC5h 15m
2026-07-17 CPA569 KIX → HKG Jul 17, 11:04 UTCJul 17, 14:15 UTC3h 10m
2026-07-17 CPA598 HKG → KIX Jul 17, 05:45 UTCJul 17, 09:25 UTC3h 40m
2026-07-16 CPA304 HKG → HKG Jul 16, 12:25 UTCJul 17, 02:45 UTC14h 20m
2026-07-16 CPA513 - Jul 16, 05:45 UTCJul 16, 08:35 UTC2h 50m
2026-07-16 CPA512 - Jul 16, 01:15 UTCJul 16, 04:15 UTC3h 0m
2026-07-15 CPA569 KIX → HKG Jul 15, 12:00 UTCJul 15, 15:10 UTC3h 10m
2026-07-15 CPA598 HKG → KIX Jul 15, 07:00 UTCJul 15, 10:30 UTC3h 30m
2026-07-15 CPA730 - Jul 15, 03:45 UTCJul 15, 04:10 UTC25m
2026-07-15 CPA730 - Jul 15, 00:35 UTCJul 15, 01:05 UTC30m
2026-07-14 CPA729 - Jul 14, 13:20 UTCJul 14, 13:50 UTC30m
2026-07-14 CPA729 - Jul 14, 10:30 UTCJul 14, 10:45 UTC15m
2026-07-14 CPA439 - Jul 14, 05:10 UTCJul 14, 08:15 UTC3h 5m
2026-07-14 CPA434 HKG → ICN Jul 14, 00:10 UTCJul 14, 03:20 UTC3h 10m
2026-07-13 CPA955 - Jul 13, 07:45 UTCJul 13, 09:25 UTC1h 40m
2026-07-13 CPA956 - Jul 13, 03:50 UTCJul 13, 04:45 UTC55m
2026-07-12 CPA774 - Jul 12, 07:40 UTCJul 12, 08:01 UTC20m
2026-07-12 CPA774 - Jul 12, 05:40 UTCJul 12, 05:50 UTC10m
2026-07-12 CPA717 - Jul 12, 03:25 UTCJul 12, 03:45 UTC20m
2026-07-12 CPA717 - Jul 12, 01:15 UTCJul 12, 01:30 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.

Prefer a tail-number view? See the B-HPE page for operator, model, and routing details .

Mode-S 78924A frequently asked

What is Mode-S code 78924A?
78924A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-HPE.
Where is Mode-S 78924A registered?
Mode-S code 78924A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78924A broadcasting right now?
Yes. Mode-S 78924A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78924A, octal 36111112, decimal 7,901,770.
What flights does 78924A operate?
Mode-S 78924A has broadcast 20 distinct callsigns, including CPA774, CPA708, CPA729, CPA956, CPA751.