Apparatus

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sensors Mode-S transponder

7808A2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5663 · BOEING 737-800

Hex
7808A2
Octal
36004242
Decimal
7,866,530
Country
CN
Tail
B-5663
Type
B738
No current signal · last broadcast 2h ago
Flights observed
116
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 7808A2.

Country allocation

The ICAO 24-bit address 7808A2 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
YZR7565 - 8 2026-07-07
YZR7536 - 8 2026-07-07
YZR7535 - 8 2026-07-07
YZR7596 - 7 2026-07-15
YZR7566 - 7 2026-06-29
YZR7527 - 7 2026-07-18
YZR7579 Yangtze River Express 6 2026-06-12
YZR7543 - 6 2026-06-27
YZR7537 Yangtze River Express 6 2026-06-11
YZR7573 - 5 2026-07-17
YZR7544 - 4 2026-07-15
YZR7532 - 4 2026-06-30
YZR7528 - 4 2026-07-02
YZR7526 - 4 2026-06-14
YZR7525 Yangtze River Express 4 2026-06-13
YZR7501 Yangtze River Express 4 2026-05-15
YZR7595 Yangtze River Express 3 2026-04-24
YZR7531 - 3 2026-06-30
YZR7588 - 2 2026-07-07
YZR7586 - 2 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 YZR7527 - Jul 18, 00:04 UTCJul 18, 00:15 UTC10m
2026-07-17 YZR7574 - Jul 17, 13:29 UTCJul 17, 13:40 UTC10m
2026-07-17 YZR7573 - Jul 17, 08:54 UTCJul 17, 09:04 UTC10m
2026-07-15 YZR7596 - Jul 15, 12:05 UTCJul 16, 05:05 UTC17h 0m
2026-07-15 YZR7544 - Jul 15, 04:30 UTCJul 15, 04:40 UTC10m
2026-07-13 YZR7596 - Jul 13, 11:50 UTCJul 13, 12:00 UTC10m
2026-07-12 YZR7596 - Jul 12, 15:30 UTCJul 13, 12:00 UTC20h 30m
2026-07-11 YZR7586 - Jul 11, 10:10 UTCJul 11, 10:25 UTC15m
2026-07-10 YZR7596 - Jul 10, 13:10 UTCJul 10, 14:05 UTC55m
2026-07-07 YZR7565 - Jul 7, 22:40 UTCJul 7, 22:55 UTC15m
2026-07-07 YZR7536 - Jul 7, 20:55 UTCJul 7, 21:05 UTC10m
2026-07-07 YZR7535 - Jul 7, 15:00 UTCJul 7, 19:40 UTC4h 40m
2026-07-07 YZR7535 - Jul 7, 13:45 UTCJul 7, 13:55 UTC10m
2026-07-07 YZR7599 - Jul 7, 10:00 UTCJul 7, 10:10 UTC10m
2026-07-07 YZR7588 - Jul 7, 02:45 UTCJul 7, 08:55 UTC6h 10m
2026-07-06 YZR7596 - Jul 6, 11:55 UTCJul 6, 12:10 UTC15m
2026-07-06 YZR7544 - Jul 6, 04:30 UTCJul 6, 04:40 UTC10m
2026-07-05 YZR7555 - Jul 5, 09:35 UTCJul 5, 09:45 UTC10m
2026-07-04 YZR7586 - Jul 4, 13:00 UTCJul 4, 13:15 UTC15m
2026-07-04 - - Jul 4, 10:15 UTCJul 4, 10:30 UTC15m
2026-07-02 YZR7565 - Jul 2, 22:40 UTCJul 2, 22:50 UTC10m
2026-07-02 YZR7528 - Jul 2, 15:20 UTCJul 2, 15:30 UTC10m
2026-07-02 YZR7527 - Jul 2, 00:00 UTCJul 2, 00:10 UTC10m
2026-07-01 YZR7573 - Jul 1, 08:50 UTCJul 1, 09:05 UTC15m
2026-06-30 YZR7532 - Jun 30, 14:45 UTCJun 30, 15:10 UTC25m
2026-06-30 YZR7531 - Jun 30, 01:00 UTCJun 30, 09:50 UTC8h 51m
2026-06-29 YZR7573 - Jun 29, 09:14 UTCJun 29, 09:25 UTC10m
2026-06-29 YZR7566 - Jun 29, 06:59 UTCJun 29, 07:20 UTC20m
2026-06-27 YZR7543 - Jun 27, 09:50 UTCJun 27, 10:00 UTC10m
2026-06-26 YZR7548 - Jun 26, 13:59 UTCJun 27, 10:00 UTC20h 0m
2026-06-25 YZR7543 - Jun 25, 07:59 UTCJun 25, 08:20 UTC20m
2026-06-23 YZR7543 - Jun 23, 08:04 UTCJun 23, 08:30 UTC25m
2026-06-22 YZR7544 - Jun 22, 13:44 UTCJun 22, 13:54 UTC10m
2026-06-22 YZR7543 - Jun 22, 09:49 UTCJun 22, 10:00 UTC10m
2026-06-21 YZR7543 - Jun 21, 07:55 UTCJun 21, 08:10 UTC15m
2026-06-19 YZR7508 - Jun 19, 16:34 UTCJun 20, 14:35 UTC22h 0m
2026-06-16 YZR7578 - Jun 16, 19:15 UTCJun 16, 19:25 UTC10m
2026-06-16 YZR7536 NGB → SZX Jun 16, 16:05 UTCJun 16, 16:45 UTC40m
2026-06-14 YZR7565 - Jun 14, 22:40 UTCJun 14, 22:55 UTC15m
2026-06-14 YZR7526 - Jun 14, 17:20 UTCJun 14, 17:30 UTC10m
2026-06-13 YZR7525 SZX → TNA Jun 13, 22:20 UTCJun 13, 22:40 UTC20m
2026-06-13 YZR7527 - Jun 13, 01:35 UTCJun 13, 01:45 UTC10m
2026-06-12 - - Jun 12, 15:50 UTCJun 12, 16:00 UTC10m
2026-06-12 YZR7579 PVG → ZUH Jun 12, 05:45 UTCJun 12, 09:10 UTC3h 25m
2026-06-11 YZR7537 SZX → KWE Jun 11, 23:00 UTCJun 11, 23:15 UTC15m
2026-06-11 YZR7526 TNA → SZX Jun 11, 17:25 UTCJun 11, 17:35 UTC10m
2026-06-10 YZR7525 SZX → TNA Jun 10, 22:20 UTCJun 10, 22:30 UTC10m
2026-06-10 YZR7580 ZUH → PVG Jun 10, 10:50 UTCJun 10, 13:45 UTC2h 55m
2026-06-10 YZR7579 PVG → ZUH Jun 10, 06:40 UTCJun 10, 07:05 UTC25m
2026-06-09 YZR7537 SZX → KWE Jun 9, 22:55 UTCJun 9, 23:05 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-5663 page for operator, model, and routing details .

Mode-S 7808A2 frequently asked

What is Mode-S code 7808A2?
7808A2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5663.
Where is Mode-S 7808A2 registered?
Mode-S code 7808A2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7808A2 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7808A2, octal 36004242, decimal 7,866,530.
What flights does 7808A2 operate?
Mode-S 7808A2 has broadcast 20 distinct callsigns, including YZR7565, YZR7536, YZR7535, YZR7596, YZR7566.