Apparatus

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sensors Mode-S transponder

780A99

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-LPN · AIRBUS A-320

Hex
780A99
Octal
36005231
Decimal
7,867,033
Country
CN
Tail
B-LPN
Type
A320
No current signal · last broadcast Jul 26, 18:00 UTC
Flights observed
425
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 18:00 UTC

Last known position

Most recent position reported by Mode-S 780A99.

Country allocation

The ICAO 24-bit address 780A99 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
CRK255 Hong Kong Airlines 18 2026-07-24
CRK775 - 16 2026-07-09
CRK760 Hong Kong Airlines 16 2026-07-22
CRK759 Hong Kong Airlines 16 2026-07-22
CRK254 Hong Kong Airlines 16 2026-07-24
CRK776 - 15 2026-07-09
CRK261 Hong Kong Airlines 12 2026-07-23
CRK619 - 11 2026-07-16
CRK767 Hong Kong Airlines 10 2026-05-26
CRK246 - 10 2026-07-13
CRK218 Hong Kong Airlines 10 2026-07-25
CRK128 - 10 2026-07-08
CRK497 - 9 2026-07-10
CRK496 - 9 2026-07-09
CRK260 Hong Kong Airlines 9 2026-07-23
CRK234 Hong Kong Airlines 9 2026-07-07
CRK768 Hong Kong Airlines 8 2026-05-26
CRK658 Hong Kong Airlines 8 2026-07-25
CRK253 - 8 2026-06-24
CRK235 - 8 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CRK547 DAD → HKG Jul 26, 17:45 UTCJul 26, 18:00 UTC15m
2026-07-26 CRK546 HKG → DAD Jul 26, 13:15 UTCJul 26, 13:25 UTC10m
2026-07-26 CRK679 OKA → HKG Jul 26, 09:15 UTCJul 26, 11:25 UTC2h 10m
2026-07-26 CRK676 HKG → OKA Jul 26, 05:25 UTCJul 26, 07:15 UTC1h 51m
2026-07-26 CRK221 NKG → HKG Jul 26, 03:05 UTCJul 26, 03:15 UTC10m
2026-07-25 CRK218 HKG → NKG Jul 25, 13:15 UTCJul 26, 02:10 UTC12h 55m
2026-07-25 CRK659 OKA → HKG Jul 25, 08:00 UTCJul 25, 10:25 UTC2h 25m
2026-07-25 CRK658 HKG → OKA Jul 25, 04:20 UTCJul 25, 05:50 UTC1h 30m
2026-07-24 CRK232 HKG → PVG Jul 24, 11:20 UTCJul 25, 02:10 UTC14h 50m
2026-07-24 CRK255 TPE → HKG Jul 24, 08:05 UTCJul 24, 09:25 UTC1h 20m
2026-07-24 CRK254 HKG → TPE Jul 24, 05:05 UTCJul 24, 06:25 UTC1h 20m
2026-07-24 CRK639 FUK → HKG Jul 24, 00:25 UTCJul 24, 03:30 UTC3h 5m
2026-07-23 CRK638 HKG → FUK Jul 23, 19:40 UTCJul 23, 22:30 UTC2h 50m
2026-07-23 CRK261 TPE → HKG Jul 23, 11:20 UTCJul 23, 12:45 UTC1h 25m
2026-07-23 CRK260 HKG → TPE Jul 23, 08:30 UTCJul 23, 10:00 UTC1h 30m
2026-07-23 CRK112 HKG → HGH Jul 23, 00:15 UTCJul 23, 06:05 UTC5h 50m
2026-07-22 CRK760 BKK → HKG Jul 22, 21:40 UTCJul 22, 21:45 UTC5m
2026-07-22 CRK760 BKK → HKG Jul 22, 19:25 UTCJul 22, 20:45 UTC1h 20m
2026-07-22 CRK759 HKG → BKK Jul 22, 15:10 UTCJul 22, 17:35 UTC2h 25m
2026-07-22 CRK658 HKG → OKA Jul 22, 03:40 UTCJul 22, 05:00 UTC1h 20m
2026-07-21 CRK232 HKG → PVG Jul 21, 11:55 UTCJul 22, 02:20 UTC14h 25m
2026-07-21 CRK255 TPE → HKG Jul 21, 08:25 UTCJul 21, 09:45 UTC1h 20m
2026-07-21 CRK254 HKG → TPE Jul 21, 05:45 UTCJul 21, 07:15 UTC1h 30m
2026-07-20 CRK218 - Jul 20, 13:00 UTCJul 21, 02:25 UTC13h 24m
2026-07-20 CRK255 TPE → HKG Jul 20, 08:20 UTCJul 20, 09:35 UTC1h 15m
2026-07-20 CRK254 HKG → TPE Jul 20, 05:30 UTCJul 20, 06:55 UTC1h 25m
2026-07-20 CRK639 FUK → HKG Jul 20, 00:15 UTCJul 20, 03:15 UTC3h 0m
2026-07-19 CRK638 HKG → FUK Jul 19, 19:40 UTCJul 19, 22:30 UTC2h 50m
2026-07-19 CRK261 - Jul 19, 14:00 UTCJul 19, 14:15 UTC15m
2026-07-19 CRK261 - Jul 19, 12:45 UTCJul 19, 13:30 UTC45m
2026-07-19 CRK260 HKG → TPE Jul 19, 10:05 UTCJul 19, 11:30 UTC1h 25m
2026-07-19 CRK170 - Jul 19, 08:10 UTCJul 19, 08:30 UTC20m
2026-07-19 CRK169 - Jul 19, 04:30 UTCJul 19, 04:45 UTC15m
2026-07-18 CRK218 - Jul 18, 13:45 UTCJul 19, 03:00 UTC13h 15m
2026-07-18 CRK255 - Jul 18, 08:20 UTCJul 18, 09:40 UTC1h 20m
2026-07-18 CRK254 HKG → TPE Jul 18, 05:25 UTCJul 18, 06:55 UTC1h 30m
2026-07-17 CRK218 - Jul 17, 13:15 UTCJul 18, 03:35 UTC14h 21m
2026-07-17 CRK255 - Jul 17, 08:15 UTCJul 17, 09:50 UTC1h 35m
2026-07-17 CRK254 HKG → TPE Jul 17, 05:25 UTCJul 17, 06:54 UTC1h 30m
2026-07-16 CRK218 - Jul 16, 13:49 UTCJul 17, 02:45 UTC12h 55m
2026-07-16 CRK619 - Jul 16, 08:55 UTCJul 16, 12:14 UTC3h 20m
2026-07-16 CRK618 HKG → KIX Jul 16, 03:55 UTCJul 16, 07:40 UTC3h 45m
2026-07-15 CRK398 - Jul 15, 02:30 UTCJul 15, 10:15 UTC7h 45m
2026-07-14 CRK337 - Jul 14, 13:45 UTCJul 14, 16:55 UTC3h 10m
2026-07-14 CRK336 - Jul 14, 09:15 UTCJul 14, 09:30 UTC15m
2026-07-14 CRK170 - Jul 14, 07:30 UTCJul 14, 07:50 UTC20m
2026-07-14 CRK169 - Jul 14, 03:30 UTCJul 14, 03:45 UTC15m
2026-07-13 CRK760 - Jul 13, 21:50 UTCJul 13, 22:15 UTC25m
2026-07-13 CRK760 - Jul 13, 19:40 UTCJul 13, 20:00 UTC20m
2026-07-13 CRK759 - Jul 13, 15:25 UTCJul 13, 15:35 UTC10m

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-LPN page for operator, model, and routing details .

Mode-S 780A99 frequently asked

What is Mode-S code 780A99?
780A99 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LPN.
Where is Mode-S 780A99 registered?
Mode-S code 780A99 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A99 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780A99, octal 36005231, decimal 7,867,033.
What flights does 780A99 operate?
Mode-S 780A99 has broadcast 20 distinct callsigns, including CRK255, CRK775, CRK760, CRK759, CRK254.