Apparatus

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sensors Mode-S transponder

7808A3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5662 · BOEING 737-800

Hex
7808A3
Octal
36004243
Decimal
7,866,531
Country
CN
Tail
B-5662
Type
B738
No current signal · last broadcast 6h ago
Flights observed
108
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 7808A3.

Country allocation

The ICAO 24-bit address 7808A3 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
CHH7328 Hainan Airlines 3 2026-05-04
CHH7305 Hainan Airlines 3 2026-05-04
CHH780 Hainan Airlines 2 2026-06-11
CHH7751 Hainan Airlines 2 2026-04-28
CHH7468 - 2 2026-06-16
CHH7467 - 2 2026-06-16
CHH7435 - 2 2026-06-23
CHH7367 - 2 2026-07-12
CHH7306 Hainan Airlines 2 2026-05-10
CHH7238 - 2 2026-07-13
CHH7237 - 2 2026-07-13
CHH720 Hainan Airlines 2 2026-05-25
CHH7193 - 2 2026-07-13
CHH719 Hainan Airlines 2 2026-05-25
CHH7164 - 2 2026-06-22
CHH7109 - 2 2026-06-28
CHH706 Hainan Airlines 2 2026-05-25
CHH6394 - 2 2026-07-04
CHH6211 - 2 2026-06-29
CHH7987 Hainan Airlines 1 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CHH7889 - Jul 14, 00:15 UTCJul 14, 00:25 UTC10m
2026-07-13 CHH7193 - Jul 13, 12:15 UTCJul 13, 12:25 UTC10m
2026-07-13 CHH7238 - Jul 13, 08:40 UTCJul 13, 09:00 UTC20m
2026-07-13 CHH7237 - Jul 13, 03:05 UTCJul 13, 03:20 UTC15m
2026-07-12 CHH7367 - Jul 12, 13:25 UTCJul 12, 13:45 UTC20m
2026-07-12 CHH7238 - Jul 12, 08:45 UTCJul 12, 09:10 UTC25m
2026-07-12 CHH7237 - Jul 12, 03:25 UTCJul 12, 03:45 UTC20m
2026-07-09 CHH7654 - Jul 9, 04:40 UTCJul 9, 17:05 UTC12h 25m
2026-07-07 CHH7008 - Jul 7, 06:15 UTCJul 7, 06:25 UTC10m
2026-07-05 CHH7101 CKG → SHE Jul 5, 02:15 UTCJul 5, 11:20 UTC9h 5m
2026-07-04 CHH6394 - Jul 4, 18:00 UTCJul 4, 18:10 UTC10m
2026-07-03 CHH7815 - Jul 3, 14:25 UTCJul 3, 14:45 UTC20m
2026-07-03 CHH7180 - Jul 3, 10:35 UTCJul 3, 10:45 UTC10m
2026-07-03 CHH7179 - Jul 3, 01:50 UTCJul 3, 07:45 UTC5h 55m
2026-07-02 CHH7076 - Jul 2, 04:05 UTCJul 2, 09:20 UTC5h 15m
2026-07-02 CHH7075 - Jul 2, 00:30 UTCJul 2, 00:45 UTC15m
2026-06-29 CHH7056 - Jun 29, 23:39 UTCJun 30, 13:45 UTC14h 6m
2026-06-29 CHH6211 - Jun 29, 02:20 UTCJun 29, 02:30 UTC10m
2026-06-28 CHH7110 - Jun 28, 16:00 UTCJun 28, 16:29 UTC30m
2026-06-28 CHH7109 - Jun 28, 09:15 UTCJun 28, 09:25 UTC10m
2026-06-28 CHH7804 - Jun 28, 06:20 UTCJun 28, 06:30 UTC10m
2026-06-27 CHH7982 - Jun 27, 04:15 UTCJun 27, 04:44 UTC30m
2026-06-27 CHH7981 - Jun 27, 01:00 UTCJun 27, 02:25 UTC1h 25m
2026-06-26 CHH7803 - Jun 26, 01:34 UTCJun 26, 01:54 UTC20m
2026-06-25 CHH7777 - Jun 25, 06:14 UTCJun 25, 09:10 UTC2h 55m
2026-06-24 CHH7577 - Jun 24, 23:29 UTCJun 24, 23:40 UTC10m
2026-06-24 CHH7716 - Jun 24, 12:20 UTCJun 24, 12:30 UTC10m
2026-06-24 CHH7709 - Jun 24, 07:59 UTCJun 24, 08:09 UTC10m
2026-06-23 CHH7138 - Jun 23, 23:00 UTCJun 24, 04:10 UTC5h 10m
2026-06-23 CHH7435 - Jun 23, 09:05 UTCJun 23, 09:34 UTC30m
2026-06-23 CHH6212 - Jun 23, 07:09 UTCJun 23, 07:25 UTC15m
2026-06-23 CHH6211 - Jun 23, 02:15 UTCJun 23, 02:24 UTC10m
2026-06-22 CHH7164 - Jun 22, 05:15 UTCJun 22, 05:29 UTC15m
2026-06-22 CHH7291 - Jun 22, 00:04 UTCJun 22, 00:14 UTC10m
2026-06-21 CHH7812 CAN → PEK Jun 21, 13:34 UTCJun 21, 13:50 UTC15m
2026-06-16 CHH7468 - Jun 16, 14:15 UTCJun 16, 14:30 UTC15m
2026-06-16 CHH7467 - Jun 16, 06:25 UTCJun 16, 06:35 UTC10m
2026-06-15 - - Jun 15, 05:04 UTCJun 15, 05:30 UTC25m
2026-06-14 CHH7326 WMT → SYX Jun 14, 05:55 UTCJun 14, 06:15 UTC20m
2026-06-13 CHH7079 PEK → SYX Jun 13, 00:40 UTCJun 13, 03:50 UTC3h 10m
2026-06-12 CHH7290 KWE → PEK Jun 12, 15:10 UTCJun 12, 15:20 UTC10m
2026-06-12 - - Jun 12, 06:15 UTCJun 12, 09:15 UTC3h 0m
2026-06-11 CHH780 HKG → HAK Jun 11, 12:55 UTCJun 11, 13:10 UTC15m
2026-06-11 CHH779 HAK → HKG Jun 11, 11:20 UTCJun 11, 11:30 UTC10m
2026-06-11 CHH7182 PEK → HAK Jun 11, 05:10 UTCJun 11, 05:30 UTC20m
2026-06-11 CHH6223 URC → PEK Jun 11, 02:05 UTCJun 11, 02:25 UTC20m
2026-06-06 CHH7834 TSN → URC Jun 6, 11:05 UTCJun 6, 11:30 UTC25m
2026-06-06 CHH7833 URC → TSN Jun 6, 08:55 UTCJun 6, 09:19 UTC25m
2026-06-05 CHH7367 PEK → CKG Jun 5, 13:30 UTCJun 5, 13:55 UTC25m
2026-06-05 CHH7164 NKG → SZX Jun 5, 00:20 UTCJun 5, 05:35 UTC5h 15m

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-5662 page for operator, model, and routing details .

Mode-S 7808A3 frequently asked

What is Mode-S code 7808A3?
7808A3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5662.
Where is Mode-S 7808A3 registered?
Mode-S code 7808A3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7808A3 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7808A3, octal 36004243, decimal 7,866,531.
What flights does 7808A3 operate?
Mode-S 7808A3 has broadcast 20 distinct callsigns, including CHH7328, CHH7305, CHH780, CHH7751, CHH7468.