Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

780420

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5478 · BOEING 737-800

Hex
780420
Octal
36002040
Decimal
7,865,376
Country
CN
Tail
B-5478
Type
B738
No current signal · last broadcast 5h ago
Flights observed
70
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 780420.

Country allocation

The ICAO 24-bit address 780420 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
CHH7120 Hainan Airlines 3 2026-05-18
CHH7026 Hainan Airlines 3 2026-06-03
CHH7731 Hainan Airlines 2 2026-06-01
CHH7725 Hainan Airlines 2 2026-05-21
CHH7386 Hainan Airlines 2 2026-05-17
CHH7298 - 2 2026-07-03
CHH7021 - 2 2026-07-08
CHH6394 - 2 2026-05-20
CHH7988 Hainan Airlines 1 2026-05-11
CHH7987 Hainan Airlines 1 2026-05-11
CHH7883 - 1 2026-07-05
CHH7834 Hainan Airlines 1 2026-05-01
CHH7833 Hainan Airlines 1 2026-05-01
CHH783 - 1 2026-07-09
CHH7811 Hainan Airlines 1 2026-04-29
CHH7803 - 1 2026-07-06
CHH7775 Hainan Airlines 1 2026-04-16
CHH7765 Hainan Airlines 1 2026-06-02
CHH7752 - 1 2026-07-14
CHH7722 - 1 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CHH7752 - Jul 14, 05:35 UTCJul 14, 05:50 UTC15m
2026-07-13 CHH7256 - Jul 13, 15:15 UTCJul 13, 15:40 UTC25m
2026-07-13 CHH7722 - Jul 13, 07:25 UTCJul 13, 08:01 UTC35m
2026-07-13 CHH7721 - Jul 13, 01:30 UTCJul 13, 01:40 UTC10m
2026-07-12 CHH7023 - Jul 12, 23:15 UTCJul 12, 23:35 UTC20m
2026-07-12 CHH7282 - Jul 12, 13:10 UTCJul 12, 13:25 UTC15m
2026-07-11 CHH7130 - Jul 11, 16:40 UTCJul 11, 17:10 UTC30m
2026-07-10 CHH748 - Jul 10, 04:20 UTCJul 10, 14:15 UTC9h 55m
2026-07-10 CHH747 - Jul 10, 02:25 UTCJul 10, 03:00 UTC35m
2026-07-09 CHH783 - Jul 9, 12:35 UTCJul 9, 12:50 UTC15m
2026-07-09 CHH720 - Jul 9, 08:25 UTCJul 9, 08:40 UTC15m
2026-07-09 CHH719 - Jul 9, 06:35 UTCJul 9, 06:55 UTC20m
2026-07-09 CHH7022 - Jul 9, 02:25 UTCJul 9, 02:50 UTC25m
2026-07-08 CHH7021 - Jul 8, 23:20 UTCJul 8, 23:30 UTC10m
2026-07-06 CHH7803 - Jul 6, 01:45 UTCJul 6, 02:05 UTC20m
2026-07-05 CHH7109 - Jul 5, 11:00 UTCJul 5, 11:25 UTC25m
2026-07-05 CHH7883 - Jul 5, 00:05 UTCJul 5, 00:25 UTC20m
2026-07-04 CHH7674 - Jul 4, 14:10 UTCJul 4, 14:30 UTC20m
2026-07-04 CHH7673 - Jul 4, 09:50 UTCJul 4, 10:05 UTC15m
2026-07-03 CHH7298 - Jul 3, 15:40 UTCJul 3, 16:00 UTC20m
2026-07-02 CHH6234 - Jul 2, 08:45 UTCJul 2, 08:55 UTC10m
2026-07-01 CHH7182 - Jul 1, 05:15 UTCJul 1, 05:35 UTC20m
2026-06-29 CHH7177 PEK → HGH Jun 29, 13:30 UTCJun 29, 13:44 UTC15m
2026-06-28 CHH7054 - Jun 28, 13:40 UTCJun 29, 06:05 UTC16h 25m
2026-06-07 CHH7083 SYX → CAN Jun 7, 13:40 UTCJun 8, 06:10 UTC16h 30m
2026-06-07 CHH7077 HAK → KHN Jun 7, 06:40 UTCJun 8, 06:00 UTC23h 20m
2026-06-06 CHH7271 CAN → KWE Jun 6, 04:35 UTCJun 6, 04:50 UTC15m
2026-06-05 CHH7272 KWE → CAN Jun 5, 14:45 UTCJun 5, 14:55 UTC10m
2026-06-03 CHH7026 SZX → HAK Jun 3, 13:50 UTCJun 3, 14:00 UTC10m
2026-06-02 CHH7765 SZX → FUG Jun 2, 23:05 UTCJun 2, 23:15 UTC10m
2026-06-02 CHH7394 HGH → SZX Jun 2, 06:10 UTCJun 2, 06:25 UTC15m
2026-06-02 CHH7393 SZX → HGH Jun 2, 00:05 UTCJun 2, 00:15 UTC10m
2026-06-01 CHH7731 SYX → SZX Jun 1, 01:10 UTCJun 1, 01:20 UTC10m
2026-05-29 CHH7535 PEK → CSX May 29, 14:25 UTCMay 30, 01:30 UTC11h 5m
2026-05-29 CHH7143 PEK → KHN May 29, 06:55 UTCMay 29, 07:10 UTC15m
2026-05-28 CHH7185 PEK → YIH May 28, 23:20 UTCMay 28, 23:40 UTC20m
2026-05-28 CHH7246 URC → PEK May 28, 14:55 UTCMay 28, 15:15 UTC20m
2026-05-24 CHH7522 ZUH → XIY May 24, 12:40 UTCMay 24, 12:50 UTC10m
2026-05-21 CHH7026 SZX → HAK May 21, 13:30 UTCMay 21, 13:45 UTC15m
2026-05-21 CHH7725 SZX → PVG May 21, 06:45 UTCMay 21, 06:55 UTC10m
2026-05-20 CHH6394 - May 20, 17:25 UTCMay 20, 17:35 UTC10m
2026-05-19 CHH7367 PEK → CKG May 19, 13:25 UTCMay 19, 13:40 UTC15m
2026-05-18 CHH7120 PVG → HAK May 18, 04:45 UTCMay 18, 11:20 UTC6h 35m
2026-05-17 CHH7386 HGH → SYX May 17, 09:40 UTCMay 18, 04:55 UTC19h 15m
2026-05-17 CHH7386 HGH → SYX May 17, 05:55 UTCMay 17, 09:55 UTC4h 0m
2026-05-11 CHH7988 TPE → PEK May 11, 05:10 UTCMay 11, 05:40 UTC30m
2026-05-11 CHH7987 PEK → TPE May 11, 01:50 UTCMay 11, 02:25 UTC35m
2026-05-09 CHH7145 PEK → URC May 9, 23:44 UTCMay 9, 23:55 UTC10m
2026-05-09 CHH7267 PEK → CKG May 9, 09:45 UTCMay 9, 10:05 UTC20m
2026-05-08 CHH7298 TYN → CAN May 8, 13:50 UTCMay 8, 14:05 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-5478 page for operator, model, and routing details .

Mode-S 780420 frequently asked

What is Mode-S code 780420?
780420 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5478.
Where is Mode-S 780420 registered?
Mode-S code 780420 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780420 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780420, octal 36002040, decimal 7,865,376.
What flights does 780420 operate?
Mode-S 780420 has broadcast 20 distinct callsigns, including CHH7120, CHH7026, CHH7731, CHH7725, CHH7386.