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 Jul 26, 18:10 UTC
Flights observed
174
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 18:10 UTC

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
CHH7709 Hainan Airlines 11 2026-07-26
CHH717 - 10 2026-07-06
CHH786 - 9 2026-07-05
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
CHH489 Hainan Airlines 6 2026-07-24
CHH7712 Hainan Airlines 5 2026-07-21
CHH7707 Hainan Airlines 5 2026-07-19
CHH7704 - 4 2026-07-17
CHH7703 Hainan Airlines 4 2026-07-21
CHH490 Hainan Airlines 4 2026-07-24
CHH408 Hainan Airlines 4 2026-07-22
CHH7716 - 3 2026-07-14
CHH7711 - 3 2026-07-15
CHH7358 - 3 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CHH757 SZX → CDG Jul 26, 17:55 UTCJul 26, 18:10 UTC15m
2026-07-26 CHH7709 PEK → SZX Jul 26, 12:25 UTCJul 26, 12:35 UTC10m
2026-07-26 CHH7709 PEK → SZX Jul 26, 09:55 UTCJul 26, 10:10 UTC15m
2026-07-26 CHH7277 PEK → HGH Jul 26, 00:20 UTCJul 26, 00:35 UTC15m
2026-07-25 CHH7190 KWE → PEK Jul 25, 07:45 UTCJul 25, 08:00 UTC15m
2026-07-25 CHH7189 PEK → KWE Jul 25, 00:40 UTCJul 25, 01:10 UTC30m
2026-07-24 CHH490 BER → PEK Jul 24, 20:00 UTCJul 24, 20:15 UTC15m
2026-07-24 CHH490 BER → PEK Jul 24, 12:10 UTCJul 24, 17:40 UTC5h 30m
2026-07-24 CHH489 PEK → BER Jul 24, 03:45 UTCJul 24, 04:10 UTC25m
2026-07-23 CHH489 PEK → BER Jul 23, 22:25 UTCJul 24, 02:10 UTC3h 45m
2026-07-23 CHH489 PEK → BER Jul 23, 19:25 UTCJul 23, 19:35 UTC10m
2026-07-23 CHH7246 URC → PEK Jul 23, 15:00 UTCJul 23, 15:20 UTC20m
2026-07-23 CHH7245 PEK → URC Jul 23, 06:10 UTCJul 23, 06:30 UTC20m
2026-07-23 CHH7198 LHW → PEK Jul 23, 03:50 UTCJul 23, 04:15 UTC25m
2026-07-22 CHH7197 PEK → LHW Jul 22, 23:15 UTCJul 22, 23:35 UTC20m
2026-07-22 CHH408 EDI → PEK Jul 22, 20:20 UTCJul 22, 20:40 UTC20m
2026-07-22 CHH408 EDI → PEK Jul 22, 11:40 UTCJul 22, 17:55 UTC6h 15m
2026-07-21 CHH407 PEK → EDI Jul 21, 19:55 UTCJul 22, 05:25 UTC9h 30m
2026-07-21 CHH7712 SZX → PEK Jul 21, 10:35 UTCJul 21, 10:50 UTC15m
2026-07-21 CHH7703 PEK → SZX Jul 21, 05:00 UTCJul 21, 05:10 UTC10m
2026-07-21 CHH7703 PEK → SZX Jul 21, 02:00 UTCJul 21, 02:25 UTC25m
2026-07-20 CHH490 BER → PEK Jul 20, 12:15 UTCJul 20, 20:25 UTC8h 10m
2026-07-20 CHH489 PEK → BER Jul 20, 04:35 UTCJul 20, 04:55 UTC20m
2026-07-19 CHH489 PEK → BER Jul 19, 20:05 UTCJul 20, 02:40 UTC6h 35m
2026-07-19 CHH7712 - Jul 19, 10:35 UTCJul 19, 10:45 UTC10m
2026-07-19 CHH7707 PEK → SZX Jul 19, 06:10 UTCJul 19, 06:25 UTC15m
2026-07-19 CHH7198 LHW → PEK Jul 19, 03:35 UTCJul 19, 04:00 UTC25m
2026-07-18 CHH7197 PEK → LHW Jul 18, 23:10 UTCJul 18, 23:35 UTC25m
2026-07-18 CHH408 - Jul 18, 19:45 UTCJul 18, 20:00 UTC15m
2026-07-18 CHH408 - Jul 18, 11:15 UTCJul 18, 17:20 UTC6h 5m
2026-07-17 CHH407 - Jul 17, 23:10 UTCJul 18, 05:45 UTC6h 36m
2026-07-17 CHH407 - Jul 17, 20:00 UTCJul 17, 20:10 UTC10m
2026-07-17 CHH7712 - Jul 17, 12:50 UTCJul 17, 13:05 UTC15m
2026-07-17 CHH7712 - Jul 17, 10:30 UTCJul 17, 10:40 UTC10m
2026-07-17 CHH7707 - Jul 17, 08:35 UTCJul 17, 08:45 UTC10m
2026-07-17 CHH7707 - Jul 17, 06:05 UTCJul 17, 06:20 UTC15m
2026-07-17 CHH7704 - Jul 17, 03:39 UTCJul 17, 03:50 UTC10m
2026-07-17 CHH7704 - Jul 17, 01:20 UTCJul 17, 01:29 UTC10m
2026-07-16 CHH7960 - Jul 16, 21:45 UTCJul 16, 22:00 UTC15m
2026-07-16 CHH7960 - Jul 16, 09:45 UTCJul 16, 19:50 UTC10h 5m
2026-07-15 CHH7959 - Jul 15, 22:00 UTCJul 16, 07:45 UTC9h 45m
2026-07-15 CHH7711 - Jul 15, 12:55 UTCJul 15, 13:20 UTC25m
2026-07-15 CHH7711 - Jul 15, 10:45 UTCJul 15, 11:00 UTC15m
2026-07-15 CHH6214 - Jul 15, 06:45 UTCJul 15, 06:55 UTC10m
2026-07-14 CHH7716 - Jul 14, 14:50 UTCJul 14, 15:20 UTC30m
2026-07-14 CHH7716 - Jul 14, 12:30 UTCJul 14, 12:40 UTC10m
2026-07-14 CHH7709 - Jul 14, 10:15 UTCJul 14, 10:35 UTC20m
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

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 Jul 26, 18:10 UTC.
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 CHH7709, CHH717, CHH786, CHH785, CHH7357.