Apparatus

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sensors Mode-S transponder

7822AB

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-227N · BOEING 737-800

Hex
7822AB
Octal
36021253
Decimal
7,873,195
Country
CN
Tail
B-227N
Type
B738
No current signal · last broadcast 1d ago
Flights observed
232
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7822AB.

Country allocation

The ICAO 24-bit address 7822AB 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
EPA6321 - 9 2026-07-12
EPA6303 - 9 2026-07-12
EPA6383 Shenzhen Donghai Airlines 8 2026-05-15
EPA6322 - 8 2026-06-28
EPA6218 - 8 2026-07-12
EPA6217 - 8 2026-06-28
EPA6283 - 7 2026-07-08
EPA6390 Shenzhen Donghai Airlines 6 2026-05-17
EPA6304 - 6 2026-07-12
EPA6284 - 6 2026-07-08
EPA6270 - 6 2026-06-29
EPA6389 Shenzhen Donghai Airlines 5 2026-05-17
EPA6309 - 5 2026-07-09
EPA6305 - 5 2026-07-11
EPA6269 - 5 2026-06-29
EPA6268 - 5 2026-07-05
EPA6267 - 5 2026-07-04
EPA6255 - 5 2026-07-04
EPA6384 Shenzhen Donghai Airlines 4 2026-05-15
EPA6317 Shenzhen Donghai Airlines 4 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 EPA6218 - Jul 12, 16:05 UTCJul 12, 17:01 UTC55m
2026-07-12 EPA6321 - Jul 12, 11:55 UTCJul 12, 12:10 UTC15m
2026-07-12 EPA6304 - Jul 12, 10:05 UTCJul 12, 10:20 UTC15m
2026-07-12 EPA6303 - Jul 12, 00:45 UTCJul 12, 00:55 UTC10m
2026-07-11 EPA6305 - Jul 11, 06:20 UTCJul 11, 06:35 UTC15m
2026-07-10 EPA6257 - Jul 10, 23:45 UTCJul 11, 00:00 UTC15m
2026-07-10 EPA6238 - Jul 10, 15:35 UTCJul 10, 16:15 UTC40m
2026-07-09 EPA6309 - Jul 9, 03:30 UTCJul 9, 03:40 UTC10m
2026-07-09 EPA6309 - Jul 9, 02:15 UTCJul 9, 02:25 UTC10m
2026-07-08 EPA6277 - Jul 8, 16:00 UTCJul 8, 16:10 UTC10m
2026-07-08 EPA6284 - Jul 8, 14:15 UTCJul 8, 14:35 UTC20m
2026-07-08 EPA6283 - Jul 8, 05:05 UTCJul 8, 05:15 UTC10m
2026-07-08 EPA6274 - Jul 8, 01:40 UTCJul 8, 02:05 UTC25m
2026-07-07 EPA6273 - Jul 7, 16:30 UTCJul 7, 16:45 UTC15m
2026-07-07 EPA6272 - Jul 7, 05:25 UTCJul 7, 06:15 UTC50m
2026-07-06 EPA6271 - Jul 6, 23:30 UTCJul 7, 00:10 UTC40m
2026-07-06 EPA6224 - Jul 6, 16:20 UTCJul 6, 16:35 UTC15m
2026-07-06 EPA6224 - Jul 6, 06:50 UTCJul 6, 10:45 UTC3h 55m
2026-07-06 EPA6223 - Jul 6, 02:35 UTCJul 6, 02:45 UTC10m
2026-07-06 EPA6278 - Jul 6, 00:15 UTCJul 6, 00:40 UTC25m
2026-07-05 EPA6284 - Jul 5, 11:50 UTCJul 5, 12:25 UTC35m
2026-07-05 EPA6283 - Jul 5, 03:25 UTCJul 5, 03:35 UTC10m
2026-07-05 EPA6268 - Jul 5, 01:00 UTCJul 5, 01:25 UTC25m
2026-07-04 EPA6267 - Jul 4, 19:35 UTCJul 4, 19:50 UTC15m
2026-07-04 EPA6256 - Jul 4, 18:00 UTCJul 4, 18:10 UTC10m
2026-07-04 EPA6255 - Jul 4, 04:50 UTCJul 4, 05:00 UTC10m
2026-07-04 EPA6268 - Jul 4, 01:40 UTCJul 4, 02:05 UTC25m
2026-07-03 EPA6267 - Jul 3, 15:35 UTCJul 3, 15:45 UTC10m
2026-07-03 EPA6244 - Jul 3, 13:15 UTCJul 3, 13:40 UTC25m
2026-07-02 EPA6243 - Jul 2, 23:15 UTCJul 2, 23:25 UTC10m
2026-07-02 EPA6362 - Jul 2, 16:10 UTCJul 2, 16:30 UTC20m
2026-07-02 EPA6361 - Jul 2, 03:20 UTCJul 2, 03:30 UTC10m
2026-07-01 EPA6362 - Jul 1, 16:20 UTCJul 1, 16:45 UTC25m
2026-07-01 EPA6361 - Jul 1, 12:00 UTCJul 1, 12:10 UTC10m
2026-07-01 EPA6242 - Jul 1, 09:20 UTCJul 1, 09:40 UTC20m
2026-06-30 EPA6241 - Jun 30, 23:00 UTCJun 30, 23:10 UTC10m
2026-06-30 EPA6284 - Jun 30, 13:50 UTCJun 30, 14:05 UTC15m
2026-06-30 EPA6283 - Jun 30, 03:05 UTCJun 30, 03:15 UTC10m
2026-06-29 EPA6270 - Jun 29, 15:34 UTCJun 29, 15:45 UTC10m
2026-06-29 EPA6269 - Jun 29, 05:34 UTCJun 29, 05:45 UTC10m
2026-06-28 EPA6279 - Jun 28, 22:59 UTCJun 28, 23:14 UTC15m
2026-06-28 EPA6258 - Jun 28, 17:30 UTCJun 28, 17:55 UTC25m
2026-06-28 EPA6313 - Jun 28, 11:25 UTCJun 28, 11:39 UTC15m
2026-06-28 EPA6322 - Jun 28, 08:19 UTCJun 28, 08:34 UTC15m
2026-06-28 EPA6217 - Jun 28, 00:55 UTCJun 28, 01:04 UTC10m
2026-06-27 EPA6231 - Jun 27, 02:25 UTCJun 27, 02:35 UTC10m
2026-06-26 EPA6270 - Jun 26, 18:20 UTCJun 26, 18:34 UTC15m
2026-06-25 EPA6248 - Jun 25, 10:45 UTCJun 25, 10:59 UTC15m
2026-06-24 EPA6247 - Jun 24, 23:10 UTCJun 24, 23:20 UTC10m
2026-06-24 EPA6226 - Jun 24, 10:35 UTCJun 24, 17:14 UTC6h 40m

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-227N page for operator, model, and routing details .

Mode-S 7822AB frequently asked

What is Mode-S code 7822AB?
7822AB is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-227N.
Where is Mode-S 7822AB registered?
Mode-S code 7822AB is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7822AB broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7822AB, octal 36021253, decimal 7,873,195.
What flights does 7822AB operate?
Mode-S 7822AB has broadcast 20 distinct callsigns, including EPA6321, EPA6303, EPA6383, EPA6322, EPA6218.