Apparatus

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sensors Mode-S transponder

7820FA

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-225U · BOEING 737 MAX 8

Hex
7820FA
Octal
36020372
Decimal
7,872,762
Country
CN
Tail
B-225U
Type
B38M
No current signal · last broadcast 10h ago
Flights observed
173
Distinct callsigns
20
Country
CN
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 7820FA.

Country allocation

The ICAO 24-bit address 7820FA 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
CHH7175 - 9 2026-07-07
CHH7877 Hainan Airlines 8 2026-06-06
CHH7772 - 8 2026-07-14
CHH7771 - 7 2026-07-14
CHH755 Hainan Airlines 6 2026-04-20
CHH7770 - 5 2026-07-13
CHH7734 - 5 2026-07-13
CHH7733 - 5 2026-07-13
CHH7630 - 5 2026-07-13
CHH7629 - 5 2026-07-13
CHH756 Hainan Airlines 5 2026-04-20
CHH430 - 5 2026-06-24
CHH7769 - 4 2026-07-13
CHH7156 - 4 2026-07-12
CHH429 - 4 2026-06-24
CHH7522 - 3 2026-07-05
CHH7398 - 3 2026-07-08
CHH7337 Hainan Airlines 3 2026-06-07
CHH7256 Hainan Airlines 3 2026-06-11
CHH7028 Hainan Airlines 3 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CHH7772 - Jul 14, 11:35 UTCJul 14, 11:55 UTC20m
2026-07-14 CHH7771 - Jul 14, 07:30 UTCJul 14, 08:10 UTC40m
2026-07-13 CHH7734 - Jul 13, 16:50 UTCJul 13, 17:00 UTC10m
2026-07-13 CHH7733 - Jul 13, 11:50 UTCJul 13, 12:00 UTC10m
2026-07-13 CHH7770 - Jul 13, 09:25 UTCJul 13, 09:45 UTC20m
2026-07-13 CHH7630 - Jul 13, 05:40 UTCJul 13, 05:50 UTC10m
2026-07-13 CHH7629 - Jul 13, 03:25 UTCJul 13, 04:10 UTC45m
2026-07-13 CHH7769 - Jul 13, 00:05 UTCJul 13, 00:45 UTC40m
2026-07-12 CHH6206 - Jul 12, 10:35 UTCJul 12, 16:15 UTC5h 40m
2026-07-12 CHH7156 - Jul 12, 07:20 UTCJul 12, 07:35 UTC15m
2026-07-12 CHH7155 - Jul 12, 02:10 UTCJul 12, 02:20 UTC10m
2026-07-11 CHH7734 - Jul 11, 16:55 UTCJul 11, 17:05 UTC10m
2026-07-11 CHH7733 - Jul 11, 11:55 UTCJul 11, 12:05 UTC10m
2026-07-11 CHH7722 - Jul 11, 08:55 UTCJul 11, 09:05 UTC10m
2026-07-11 CHH7721 - Jul 11, 02:00 UTCJul 11, 02:10 UTC10m
2026-07-10 CHH7023 - Jul 10, 23:35 UTCJul 10, 23:50 UTC15m
2026-07-10 CHH7396 - Jul 10, 11:35 UTCJul 10, 12:15 UTC40m
2026-07-10 CHH7395 - Jul 10, 06:35 UTCJul 10, 06:45 UTC10m
2026-07-09 CHH7767 - Jul 9, 23:55 UTCJul 10, 00:05 UTC10m
2026-07-09 CHH7392 - Jul 9, 16:25 UTCJul 9, 16:45 UTC20m
2026-07-09 CHH7156 - Jul 9, 09:35 UTCJul 9, 10:35 UTC1h 0m
2026-07-08 CHH7398 - Jul 8, 23:55 UTCJul 9, 00:35 UTC40m
2026-07-08 CHH7397 - Jul 8, 14:40 UTCJul 8, 14:50 UTC10m
2026-07-08 CHH7772 - Jul 8, 12:55 UTCJul 8, 13:25 UTC30m
2026-07-08 CHH7771 - Jul 8, 09:20 UTCJul 8, 09:30 UTC10m
2026-07-07 CHH7763 - Jul 7, 22:50 UTCJul 7, 23:00 UTC10m
2026-07-07 CHH7772 - Jul 7, 17:30 UTCJul 7, 18:55 UTC1h 25m
2026-07-07 CHH7771 - Jul 7, 14:40 UTCJul 7, 14:45 UTC5m
2026-07-07 CHH7176 - Jul 7, 07:50 UTCJul 7, 08:00 UTC10m
2026-07-07 CHH7175 - Jul 7, 02:15 UTCJul 7, 02:35 UTC20m
2026-07-06 CHH6206 - Jul 6, 21:15 UTCJul 6, 21:25 UTC10m
2026-07-06 CHH6205 - Jul 6, 09:50 UTCJul 6, 10:05 UTC15m
2026-07-05 CHH7522 - Jul 5, 13:30 UTCJul 5, 13:45 UTC15m
2026-06-29 CHH7522 - Jun 29, 12:34 UTCJun 29, 12:49 UTC15m
2026-06-25 CHH7870 - Jun 25, 23:49 UTCJun 25, 23:59 UTC10m
2026-06-25 CHH7715 - Jun 25, 19:34 UTCJun 25, 19:54 UTC20m
2026-06-25 CHH7715 - Jun 25, 17:05 UTCJun 25, 17:20 UTC15m
2026-06-25 CHH7179 - Jun 25, 01:44 UTCJun 25, 07:54 UTC6h 10m
2026-06-24 CHH430 - Jun 24, 07:10 UTCJun 24, 08:49 UTC1h 40m
2026-06-24 CHH429 - Jun 24, 00:25 UTCJun 24, 04:50 UTC4h 25m
2026-06-23 CHH7182 - Jun 23, 05:20 UTCJun 23, 05:34 UTC15m
2026-06-23 CHH7181 - Jun 23, 00:35 UTCJun 23, 00:45 UTC10m
2026-06-22 CHH450 ICN → HAK Jun 22, 12:40 UTCJun 22, 15:40 UTC3h 0m
2026-06-22 CHH449 - Jun 22, 04:49 UTCJun 22, 11:00 UTC6h 10m
2026-06-21 CHH780 HKG → HAK Jun 21, 13:04 UTCJun 21, 13:15 UTC10m
2026-06-21 CHH779 - Jun 21, 11:10 UTCJun 21, 11:30 UTC20m
2026-06-21 CHH7116 - Jun 21, 02:45 UTCJun 21, 07:14 UTC4h 30m
2026-06-20 CHH702 - Jun 20, 12:50 UTCJun 20, 14:19 UTC1h 30m
2026-06-20 CHH701 - Jun 20, 10:34 UTCJun 20, 10:49 UTC15m
2026-06-20 CHH706 - Jun 20, 02:19 UTCJun 20, 02:35 UTC15m

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-225U page for operator, model, and routing details .

Mode-S 7820FA frequently asked

What is Mode-S code 7820FA?
7820FA is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-225U.
Where is Mode-S 7820FA registered?
Mode-S code 7820FA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820FA broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7820FA, octal 36020372, decimal 7,872,762.
What flights does 7820FA operate?
Mode-S 7820FA has broadcast 20 distinct callsigns, including CHH7175, CHH7877, CHH7772, CHH7771, CHH755.