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 Jul 26, 10:15 UTC
Flights observed
92
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 10:15 UTC

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 7 2026-07-18
CHH7394 - 3 2026-07-16
CHH7386 - 3 2026-07-19
CHH7026 Hainan Airlines 3 2026-06-03
CHH7731 Hainan Airlines 2 2026-06-01
CHH7725 Hainan Airlines 2 2026-05-21
CHH7393 - 2 2026-07-15
CHH7319 Hainan Airlines 2 2026-07-17
CHH7298 - 2 2026-07-03
CHH7256 - 2 2026-07-14
CHH7215 Hainan Airlines 2 2026-07-25
CHH7109 Hainan Airlines 2 2026-07-26
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CHH7109 PEK → JIQ Jul 26, 10:05 UTCJul 26, 10:15 UTC10m
2026-07-26 CHH7481 HAK → PEK Jul 26, 06:25 UTCJul 26, 06:35 UTC11m
2026-07-25 CHH7215 HAK → NKG Jul 25, 04:30 UTCJul 25, 09:25 UTC4h 55m
2026-07-24 CHH7567 PEK → CKG Jul 24, 11:15 UTCJul 25, 09:25 UTC22h 10m
2026-07-24 CHH7568 CKG → PEK Jul 24, 09:00 UTCJul 24, 09:30 UTC30m
2026-07-22 CHH6333 - Jul 22, 11:30 UTCJul 22, 11:40 UTC10m
2026-07-19 CHH7386 - Jul 19, 05:15 UTCJul 19, 10:30 UTC5h 15m
2026-07-18 CHH7120 PVG → HAK Jul 18, 10:05 UTCJul 19, 05:15 UTC19h 10m
2026-07-18 CHH7120 PVG → HAK Jul 18, 09:30 UTCJul 19, 05:15 UTC19h 45m
2026-07-18 CHH7120 PVG → HAK Jul 18, 02:55 UTCJul 18, 10:40 UTC7h 45m
2026-07-17 CHH7120 PVG → HAK Jul 17, 12:40 UTCJul 18, 10:40 UTC22h 1m
2026-07-17 CHH7319 HAK → PVG Jul 17, 06:45 UTCJul 18, 05:30 UTC22h 46m
2026-07-17 CHH7319 HAK → PVG Jul 17, 01:59 UTCJul 17, 13:35 UTC11h 35m
2026-07-16 CHH7028 - Jul 16, 16:09 UTCJul 16, 16:19 UTC10m
2026-07-16 CHH7392 - Jul 16, 13:49 UTCJul 16, 14:35 UTC45m
2026-07-16 CHH7391 - Jul 16, 09:15 UTCJul 16, 09:25 UTC10m
2026-07-16 CHH7394 - Jul 16, 06:45 UTCJul 16, 07:10 UTC25m
2026-07-15 CHH7476 - Jul 15, 16:10 UTCJul 15, 16:20 UTC10m
2026-07-15 CHH7475 - Jul 15, 09:10 UTCJul 15, 09:20 UTC10m
2026-07-15 CHH7394 - Jul 15, 07:40 UTCJul 15, 07:55 UTC15m
2026-07-15 CHH7393 - Jul 15, 02:05 UTCJul 15, 02:15 UTC10m
2026-07-14 CHH7256 - Jul 14, 15:15 UTCJul 14, 15:40 UTC25m
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

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 Jul 26, 10:15 UTC.
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, CHH7394, CHH7386, CHH7026, CHH7731.