Apparatus

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sensors Mode-S transponder

7816B3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-20AL · BOEING 787-9 Dreamliner

Hex
7816B3
Octal
36013263
Decimal
7,870,131
Country
CN
Tail
B-20AL
Type
B789
No current signal · last broadcast 43m ago
Flights observed
127
Distinct callsigns
20
Country
CN
Last broadcast
43m ago

Last known position

Most recent position reported by Mode-S 7816B3.

Country allocation

The ICAO 24-bit address 7816B3 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
CHH717 - 10 2026-07-06
CHH786 - 9 2026-07-05
CHH7709 - 8 2026-07-14
CHH785 - 7 2026-07-04
CHH7357 - 7 2026-07-02
CHH718 - 7 2026-07-07
CHH7992 - 6 2026-06-29
CHH7991 - 6 2026-06-28
CHH728 - 6 2026-07-09
CHH727 - 6 2026-07-08
CHH7358 - 3 2026-07-02
CHH469 - 3 2026-06-14
CHH7932 Hainan Airlines 2 2026-05-11
CHH7707 Hainan Airlines 2 2026-05-18
CHH7704 - 2 2026-07-11
CHH7703 - 2 2026-06-22
CHH7701 Hainan Airlines 2 2026-05-10
CHH760 Hainan Airlines 2 2026-04-24
CHH758 Hainan Airlines 2 2026-06-15
CHH7024 - 2 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CHH7709 - Jul 14, 07:55 UTCJul 14, 08:15 UTC20m
2026-07-13 CHH6213 - Jul 13, 23:00 UTCJul 13, 23:15 UTC15m
2026-07-13 CHH7716 - Jul 13, 12:20 UTCJul 13, 12:35 UTC15m
2026-07-13 CHH7709 - Jul 13, 10:20 UTCJul 13, 10:40 UTC20m
2026-07-13 CHH7709 - Jul 13, 07:55 UTCJul 13, 08:15 UTC20m
2026-07-13 CHH7601 - Jul 13, 00:01 UTCJul 13, 00:15 UTC15m
2026-07-11 CHH7704 - Jul 11, 01:30 UTCJul 11, 01:40 UTC10m
2026-07-09 CHH728 - Jul 9, 09:40 UTCJul 9, 14:25 UTC4h 45m
2026-07-08 CHH727 - Jul 8, 22:40 UTCJul 9, 06:15 UTC7h 35m
2026-07-07 CHH718 - Jul 7, 10:45 UTCJul 7, 16:55 UTC6h 10m
2026-07-06 CHH717 - Jul 6, 23:25 UTCJul 7, 06:15 UTC6h 50m
2026-07-05 CHH786 - Jul 5, 09:00 UTCJul 6, 00:05 UTC15h 5m
2026-07-04 CHH785 - Jul 4, 20:05 UTCJul 5, 05:40 UTC9h 35m
2026-07-03 CHH428 - Jul 3, 11:15 UTCJul 3, 14:55 UTC3h 40m
2026-07-03 CHH427 - Jul 3, 01:15 UTCJul 3, 05:25 UTC4h 10m
2026-07-02 CHH7357 - Jul 2, 13:40 UTCJul 2, 13:50 UTC10m
2026-07-02 CHH7358 - Jul 2, 11:30 UTCJul 2, 11:40 UTC10m
2026-07-01 CHH728 - Jul 1, 09:35 UTCJul 1, 14:30 UTC4h 55m
2026-06-30 CHH727 - Jun 30, 22:20 UTCJul 1, 06:25 UTC8h 5m
2026-06-29 CHH7992 - Jun 29, 10:50 UTCJun 29, 14:14 UTC3h 25m
2026-06-28 CHH7991 - Jun 28, 23:39 UTCJun 29, 06:19 UTC6h 40m
2026-06-27 CHH718 - Jun 27, 11:20 UTCJun 27, 17:34 UTC6h 15m
2026-06-26 CHH717 - Jun 26, 22:34 UTCJun 27, 05:29 UTC6h 55m
2026-06-25 CHH7027 - Jun 25, 16:55 UTCJun 25, 17:05 UTC10m
2026-06-23 CHH776 - Jun 23, 11:19 UTCJun 23, 19:15 UTC7h 55m
2026-06-22 CHH775 - Jun 22, 20:34 UTCJun 23, 03:45 UTC7h 10m
2026-06-22 CHH7024 - Jun 22, 06:25 UTCJun 22, 06:35 UTC10m
2026-06-22 CHH7703 - Jun 22, 04:24 UTCJun 22, 04:34 UTC10m
2026-06-22 CHH7703 - Jun 22, 01:55 UTCJun 22, 02:14 UTC20m
2026-06-21 CHH7809 - Jun 21, 07:04 UTCJun 21, 07:20 UTC15m
2026-06-18 CHH7710 - Jun 18, 13:25 UTCJun 18, 13:45 UTC20m
2026-06-18 CHH7705 - Jun 18, 10:20 UTCJun 18, 10:35 UTC15m
2026-06-18 CHH7702 - Jun 18, 00:10 UTCJun 18, 00:20 UTC10m
2026-06-17 CHH7713 - Jun 17, 16:10 UTCJun 17, 16:35 UTC25m
2026-06-17 CHH7708 - Jun 17, 08:20 UTCJun 17, 08:30 UTC10m
2026-06-16 CHH7394 - Jun 16, 07:20 UTCJun 16, 07:34 UTC15m
2026-06-16 CHH7393 SZX → HGH Jun 16, 00:10 UTCJun 16, 00:20 UTC10m
2026-06-15 CHH758 CDG → SZX Jun 15, 20:54 UTCJun 15, 21:04 UTC10m
2026-06-15 CHH758 CDG → SZX Jun 15, 10:00 UTCJun 15, 16:24 UTC6h 25m
2026-06-15 CHH8001 - Jun 15, 07:29 UTCJun 15, 08:10 UTC40m
2026-06-14 CHH469 - Jun 14, 22:40 UTCJun 15, 05:10 UTC6h 30m
2026-06-13 CHH718 CDG → CKG Jun 13, 10:45 UTCJun 13, 17:45 UTC7h 0m
2026-06-12 CHH717 CKG → CDG Jun 12, 22:25 UTCJun 13, 05:10 UTC6h 45m
2026-06-11 CHH728 MAD → CKG Jun 11, 10:00 UTCJun 11, 14:50 UTC4h 50m
2026-06-10 CHH727 CKG → MAD Jun 10, 22:20 UTCJun 11, 06:20 UTC8h 0m
2026-06-09 CHH718 CDG → CKG Jun 9, 10:40 UTCJun 9, 17:50 UTC7h 10m
2026-06-08 CHH717 CKG → CDG Jun 8, 22:30 UTCJun 9, 05:30 UTC7h 0m
2026-06-08 CHH717 CKG → CDG Jun 8, 00:10 UTCJun 8, 22:45 UTC22h 35m
2026-06-07 CHH786 AKL → HAK Jun 7, 13:40 UTCJun 8, 00:20 UTC10h 40m
2026-06-07 CHH786 AKL → HAK Jun 7, 13:00 UTCJun 7, 13:15 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-20AL page for operator, model, and routing details .

Mode-S 7816B3 frequently asked

What is Mode-S code 7816B3?
7816B3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-20AL.
Where is Mode-S 7816B3 registered?
Mode-S code 7816B3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7816B3 broadcasting right now?
No active broadcast right now. Last signal was 43m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7816B3, octal 36013263, decimal 7,870,131.
What flights does 7816B3 operate?
Mode-S 7816B3 has broadcast 20 distinct callsigns, including CHH717, CHH786, CHH7709, CHH785, CHH7357.