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
Broadcasting now · callsign CHH7890 · 14,850 ft
Flights observed
52
Distinct callsigns
20
Country
CN
Last broadcast
20h ago

Current position

7808A3 is currently broadcasting. Map zoomed to live position.

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
CHH7751 Hainan Airlines 2 2026-04-28
CHH7306 Hainan Airlines 2 2026-05-10
CHH720 Hainan Airlines 2 2026-05-25
CHH719 Hainan Airlines 2 2026-05-25
CHH706 Hainan Airlines 2 2026-05-25
CHH7809 Hainan Airlines 1 2026-05-18
CHH7807 Hainan Airlines 1 2026-05-19
CHH780 - 1 2026-04-17
CHH7776 - 1 2026-04-25
CHH7775 Hainan Airlines 1 2026-04-25
CHH7763 Hainan Airlines 1 2026-04-26
CHH7760 Hainan Airlines 1 2026-04-26
CHH7759 Hainan Airlines 1 2026-04-26
CHH7729 Hainan Airlines 1 2026-04-19
CHH7726 Hainan Airlines 1 2026-04-25
CHH7715 Hainan Airlines 1 2026-04-27
CHH7710 Hainan Airlines 1 2026-04-27
CHH7613 Hainan Airlines 1 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CHH7029 HAK → KWE May 29, 08:55 UTCMay 29, 09:05 UTC10m
2026-05-28 CHH6217 PEK → XIY May 28, 08:00 UTCMay 28, 08:20 UTC20m
2026-05-27 CHH7185 PEK → YIH May 27, 23:00 UTCMay 27, 23:15 UTC15m
2026-05-27 CHH7109 PEK → JIQ May 27, 09:20 UTCMay 27, 09:45 UTC25m
2026-05-25 CHH720 HKG → HAK May 25, 08:15 UTCMay 25, 08:25 UTC10m
2026-05-25 CHH719 HAK → HKG May 25, 06:15 UTCMay 25, 06:30 UTC15m
2026-05-25 CHH706 HKG → HAK May 25, 02:30 UTCMay 25, 02:40 UTC10m
2026-05-24 CHH720 HKG → HAK May 24, 08:10 UTCMay 24, 08:25 UTC15m
2026-05-24 CHH719 HAK → HKG May 24, 06:10 UTCMay 24, 06:25 UTC15m
2026-05-24 CHH706 HKG → HAK May 24, 02:10 UTCMay 24, 02:25 UTC15m
2026-05-24 CHH705 HAK → HKG May 24, 00:20 UTCMay 24, 00:40 UTC20m
2026-05-21 CHH6394 - May 21, 17:35 UTCMay 21, 17:50 UTC15m
2026-05-19 CHH7807 PEK → CAN May 19, 04:50 UTCMay 19, 05:10 UTC20m
2026-05-18 CHH7809 PEK → CAN May 18, 06:50 UTCMay 18, 07:10 UTC20m
2026-05-17 CHH7613 PEK → PVG May 17, 23:50 UTCMay 18, 00:00 UTC10m
2026-05-17 CHH7193 - May 17, 13:05 UTCMay 17, 13:20 UTC15m
2026-05-13 CHH7386 HGH → SYX May 13, 05:25 UTCMay 13, 10:15 UTC4h 50m
2026-05-10 CHH7306 TFU → SYX May 10, 14:25 UTCMay 11, 07:15 UTC16h 50m
2026-05-10 CHH7306 TFU → SYX May 10, 09:55 UTCMay 11, 07:15 UTC21h 20m
2026-05-07 CHH7073 HAK → HRB May 7, 02:25 UTCMay 7, 15:35 UTC13h 10m
2026-05-06 CHH7090 NKG → HAK May 6, 00:35 UTCMay 6, 15:10 UTC14h 34m
2026-05-05 CHH7384 HGH → SYX May 5, 14:25 UTCMay 6, 11:00 UTC20h 35m
2026-05-05 CHH7383 SYX → HGH May 5, 09:40 UTCMay 6, 08:01 UTC22h 20m
2026-05-04 CHH7328 CTU → SZX May 4, 15:00 UTCMay 5, 14:45 UTC23h 46m
2026-05-04 CHH7305 SYX → TNA May 4, 00:45 UTCMay 4, 15:20 UTC14h 35m
2026-05-03 CHH7305 SYX → TNA May 3, 15:25 UTCMay 4, 10:20 UTC18h 55m
2026-05-03 CHH7305 SYX → TNA May 3, 10:35 UTCMay 4, 07:05 UTC20h 30m
2026-05-02 CHH7328 CTU → SZX May 2, 15:10 UTCMay 3, 10:45 UTC19h 34m
2026-05-02 CHH7327 SZX → CTU May 2, 00:55 UTCMay 2, 15:25 UTC14h 30m
2026-04-30 CHH7328 CTU → SZX Apr 30, 00:45 UTCApr 30, 15:10 UTC14h 25m
2026-04-28 CHH7276 TFU → SZX Apr 28, 13:20 UTCApr 28, 13:30 UTC10m
2026-04-28 CHH7275 SZX → TFU Apr 28, 08:00 UTCApr 28, 08:10 UTC10m
2026-04-28 CHH7751 SZX → CTU Apr 28, 00:00 UTCApr 28, 00:10 UTC10m
2026-04-27 CHH7715 SZX → TNA Apr 27, 13:50 UTCApr 27, 14:05 UTC15m
2026-04-27 CHH7710 SZX → PEK Apr 27, 09:20 UTCApr 27, 09:30 UTC10m
2026-04-26 CHH7763 SZX → NKG Apr 26, 22:30 UTCApr 26, 22:40 UTC10m
2026-04-26 CHH7760 TNA → SZX Apr 26, 15:50 UTCApr 26, 16:00 UTC10m
2026-04-26 CHH7759 SZX → TNA Apr 26, 09:10 UTCApr 26, 13:25 UTC4h 15m
2026-04-25 CHH7751 SZX → CTU Apr 25, 22:55 UTCApr 25, 23:05 UTC10m
2026-04-25 CHH7776 - Apr 25, 16:45 UTCApr 25, 16:55 UTC10m
2026-04-25 CHH7775 SZX → TYN Apr 25, 05:40 UTCApr 25, 05:50 UTC10m
2026-04-25 CHH7726 PVG → SZX Apr 25, 01:55 UTCApr 25, 02:10 UTC15m
2026-04-23 CHH7322 PVG → SYX Apr 23, 23:50 UTCApr 24, 05:35 UTC5h 45m
2026-04-19 CHH7729 SZX → SHE Apr 19, 07:15 UTCApr 19, 07:25 UTC10m
2026-04-18 CHH7256 - Apr 18, 15:30 UTCApr 18, 15:45 UTC15m
2026-04-18 CHH7255 SZX → NKG Apr 18, 10:00 UTCApr 18, 10:10 UTC10m
2026-04-17 CHH7023 SYX → NKG Apr 17, 23:25 UTCApr 17, 23:40 UTC15m
2026-04-17 CHH780 - Apr 17, 14:45 UTCApr 17, 15:00 UTC14m
2026-04-15 CHH7054 HGH → HAK Apr 15, 03:00 UTCApr 15, 03:15 UTC15m
2026-04-14 CHH7468 - Apr 14, 08:20 UTCApr 14, 08:30 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-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?
Yes. Mode-S 7808A3 is currently airborne.
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, CHH7751, CHH7306, CHH720.