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
Broadcasting now · callsign CHH717 · 37,975 ft
Flights observed
64
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Current position

7816B3 is currently broadcasting. Map zoomed to live position.

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 5 2026-05-28
CHH7357 Hainan Airlines 5 2026-05-15
CHH717 Hainan Airlines 5 2026-05-30
CHH7992 Hainan Airlines 3 2026-05-06
CHH7991 Hainan Airlines 3 2026-05-06
CHH786 Hainan Airlines 3 2026-04-26
CHH728 Hainan Airlines 3 2026-04-16
CHH727 Hainan Airlines 3 2026-04-16
CHH7932 Hainan Airlines 2 2026-05-11
CHH785 Hainan Airlines 2 2026-04-26
CHH7707 Hainan Airlines 2 2026-05-18
CHH7701 Hainan Airlines 2 2026-05-10
CHH760 Hainan Airlines 2 2026-04-24
CHH7358 Hainan Airlines 2 2026-05-03
CHH718 Hainan Airlines 2 2026-04-28
CHH470 Hainan Airlines 2 2026-05-16
CHH469 Hainan Airlines 2 2026-05-15
CHH7931 Hainan Airlines 1 2026-05-10
CHH7808 Hainan Airlines 1 2026-04-23
CHH7801 Hainan Airlines 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CHH717 CKG → CDG May 30, 00:10 UTCMay 30, 04:45 UTC4h 35m
2026-05-28 CHH7157 SZX → CKG May 28, 23:40 UTCMay 28, 23:55 UTC15m
2026-05-28 CHH7709 PEK → SZX May 28, 10:40 UTCMay 28, 10:50 UTC10m
2026-05-28 CHH7709 PEK → SZX May 28, 07:55 UTCMay 28, 08:20 UTC25m
2026-05-18 CHH7712 SZX → PEK May 18, 11:50 UTCMay 18, 12:00 UTC10m
2026-05-18 CHH7707 PEK → SZX May 18, 09:25 UTCMay 18, 09:40 UTC15m
2026-05-18 CHH7707 PEK → SZX May 18, 06:55 UTCMay 18, 07:15 UTC20m
2026-05-18 CHH7704 SZX → PEK May 18, 01:20 UTCMay 18, 01:30 UTC10m
2026-05-16 CHH470 BRU → CKG May 16, 10:25 UTCMay 16, 16:40 UTC6h 15m
2026-05-15 CHH469 CKG → BRU May 15, 22:40 UTCMay 16, 05:15 UTC6h 35m
2026-05-15 CHH7357 SZX → CKG May 15, 14:50 UTCMay 15, 15:00 UTC10m
2026-05-15 CHH7709 PEK → SZX May 15, 12:05 UTCMay 15, 12:25 UTC20m
2026-05-11 CHH7932 AKL → SZX May 11, 20:10 UTCMay 11, 20:25 UTC15m
2026-05-11 CHH7932 AKL → SZX May 11, 09:00 UTCMay 11, 19:05 UTC10h 5m
2026-05-10 CHH7931 SZX → AKL May 10, 19:00 UTCMay 11, 05:10 UTC10h 10m
2026-05-10 CHH7711 PEK → SZX May 10, 12:30 UTCMay 10, 12:44 UTC15m
2026-05-10 CHH7706 SZX → PEK May 10, 05:20 UTCMay 10, 05:34 UTC15m
2026-05-10 CHH7701 PEK → SZX May 10, 03:25 UTCMay 10, 03:35 UTC10m
2026-05-10 CHH7701 PEK → SZX May 10, 00:49 UTCMay 10, 01:14 UTC25m
2026-05-08 CHH490 BER → PEK May 8, 12:14 UTCMay 8, 20:00 UTC7h 46m
2026-05-07 CHH489 PEK → BER May 7, 22:25 UTCMay 8, 04:44 UTC6h 19m
2026-05-06 CHH7992 FCO → CKG May 6, 11:00 UTCMay 6, 14:30 UTC3h 30m
2026-05-06 CHH7991 CKG → FCO May 6, 03:40 UTCMay 6, 05:35 UTC1h 55m
2026-05-05 CHH7357 SZX → CKG May 5, 12:40 UTCMay 5, 12:50 UTC10m
2026-05-04 CHH7992 FCO → CKG May 4, 10:50 UTCMay 4, 14:20 UTC3h 30m
2026-05-04 CHH7991 CKG → FCO May 4, 02:19 UTCMay 4, 05:40 UTC3h 20m
2026-05-03 CHH7357 SZX → CKG May 3, 13:40 UTCMay 3, 13:50 UTC10m
2026-05-03 CHH7358 CKG → SZX May 3, 11:40 UTCMay 3, 11:50 UTC10m
2026-05-02 CHH470 BRU → CKG May 2, 10:30 UTCMay 2, 16:30 UTC6h 0m
2026-05-01 CHH469 CKG → BRU May 1, 22:35 UTCMay 2, 05:05 UTC6h 30m
2026-05-01 CHH7357 SZX → CKG May 1, 12:30 UTCMay 1, 12:40 UTC10m
2026-05-01 CHH7709 PEK → SZX May 1, 10:30 UTCMay 1, 10:40 UTC10m
2026-05-01 CHH7709 PEK → SZX May 1, 08:05 UTCMay 1, 08:15 UTC10m
2026-05-01 CHH7278 HGH → PEK May 1, 05:35 UTCMay 1, 05:45 UTC10m
2026-05-01 CHH7277 PEK → HGH May 1, 00:15 UTCMay 1, 00:25 UTC10m
2026-04-28 CHH718 CDG → CKG Apr 28, 10:40 UTCApr 28, 17:00 UTC6h 20m
2026-04-28 CHH717 CKG → CDG Apr 28, 01:50 UTCApr 28, 05:15 UTC3h 25m
2026-04-26 CHH786 AKL → HAK Apr 26, 11:45 UTCApr 26, 19:05 UTC7h 20m
2026-04-26 CHH786 AKL → HAK Apr 26, 09:05 UTCApr 26, 09:20 UTC15m
2026-04-26 CHH785 HAK → AKL Apr 26, 05:05 UTCApr 26, 05:25 UTC20m
2026-04-25 CHH785 HAK → AKL Apr 25, 20:10 UTCApr 26, 03:00 UTC6h 50m
2026-04-24 CHH760 BRU → SZX Apr 24, 21:15 UTCApr 24, 21:25 UTC10m
2026-04-24 CHH760 BRU → SZX Apr 24, 10:55 UTCApr 24, 16:50 UTC5h 55m
2026-04-23 CHH491 PEK → BRU Apr 23, 19:15 UTCApr 24, 05:05 UTC9h 50m
2026-04-23 CHH7808 CAN → PEK Apr 23, 10:20 UTCApr 23, 10:30 UTC10m
2026-04-23 CHH7801 PEK → CAN Apr 23, 03:20 UTCApr 23, 03:40 UTC20m
2026-04-21 CHH7358 CKG → SZX Apr 21, 10:25 UTCApr 21, 10:35 UTC10m
2026-04-20 CHH7992 FCO → CKG Apr 20, 10:45 UTCApr 20, 14:15 UTC3h 30m
2026-04-20 CHH7991 CKG → FCO Apr 20, 05:10 UTCApr 20, 07:15 UTC2h 5m
2026-04-19 CHH7357 SZX → CKG Apr 19, 12:40 UTCApr 19, 13:00 UTC20m

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?
Yes. Mode-S 7816B3 is currently airborne.
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, CHH7357, CHH717, CHH7992, CHH7991.