Apparatus

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sensors Mode-S transponder

781316

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1213 · BOEING 737-800

Hex
781316
Octal
36011426
Decimal
7,869,206
Country
CN
Tail
B-1213
Type
B738
No current signal · last broadcast 17h ago
Flights observed
60
Distinct callsigns
20
Country
CN
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 781316.

Country allocation

The ICAO 24-bit address 781316 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
CHH7874 Hainan Airlines 9 2026-05-25
CHH7872 Hainan Airlines 7 2026-05-30
CHH7870 Hainan Airlines 5 2026-05-07
CHH7054 Hainan Airlines 5 2026-05-17
CHH7873 Hainan Airlines 4 2026-05-21
CHH7869 Hainan Airlines 4 2026-05-06
CHH7871 Hainan Airlines 3 2026-05-30
CHH7337 Hainan Airlines 3 2026-05-29
CHH7767 Hainan Airlines 2 2026-06-02
CHH7762 Hainan Airlines 2 2026-05-24
CHH7761 Hainan Airlines 2 2026-05-23
CHH7710 Hainan Airlines 2 2026-05-26
CHH7338 Hainan Airlines 2 2026-05-29
CHH7760 Hainan Airlines 1 2026-05-23
CHH7759 Hainan Airlines 1 2026-05-23
CHH7739 Hainan Airlines 1 2026-05-22
CHH7735 Hainan Airlines 1 2026-05-25
CHH7555 - 1 2026-04-18
CHH7512 Hainan Airlines 1 2026-05-28
CHH7488 Hainan Airlines 1 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CHH7767 SZX → KMG Jun 2, 01:30 UTCJun 2, 01:40 UTC10m
2026-06-02 CHH7767 SZX → KMG Jun 2, 00:45 UTCJun 2, 00:55 UTC10m
2026-06-01 CHH7475 SZX → TFU Jun 1, 08:05 UTCJun 1, 08:15 UTC10m
2026-05-30 CHH7872 SZX → XIY May 30, 05:05 UTCMay 30, 05:15 UTC10m
2026-05-30 CHH7871 XIY → SZX May 30, 03:10 UTCMay 30, 03:20 UTC10m
2026-05-29 CHH7337 PEK → XIY May 29, 14:30 UTCMay 29, 14:45 UTC15m
2026-05-29 CHH7338 XIY → PEK May 29, 11:35 UTCMay 29, 12:00 UTC25m
2026-05-29 CHH7871 XIY → SZX May 29, 03:40 UTCMay 29, 03:50 UTC10m
2026-05-28 CHH7512 ZUH → XIY May 28, 04:00 UTCMay 28, 04:15 UTC15m
2026-05-27 CHH7337 PEK → XIY May 27, 14:15 UTCMay 27, 14:40 UTC25m
2026-05-27 CHH7338 XIY → PEK May 27, 11:50 UTCMay 27, 12:15 UTC25m
2026-05-27 CHH7872 SZX → XIY May 27, 05:09 UTCMay 27, 05:24 UTC15m
2026-05-26 CHH7337 PEK → XIY May 26, 14:20 UTCMay 26, 14:40 UTC20m
2026-05-26 CHH7710 SZX → PEK May 26, 09:19 UTCMay 26, 09:29 UTC10m
2026-05-25 CHH7735 SZX → CGO May 25, 22:34 UTCMay 25, 22:44 UTC10m
2026-05-25 CHH7874 SZX → XIY May 25, 09:05 UTCMay 25, 09:15 UTC10m
2026-05-25 - - May 25, 05:45 UTCMay 25, 06:00 UTC15m
2026-05-24 CHH7874 SZX → XIY May 24, 09:05 UTCMay 24, 09:20 UTC15m
2026-05-24 CHH7762 NGB → SZX May 24, 04:50 UTCMay 24, 05:10 UTC20m
2026-05-23 CHH7761 SZX → NGB May 23, 22:35 UTCMay 23, 22:45 UTC10m
2026-05-23 CHH7760 TNA → SZX May 23, 16:30 UTCMay 23, 16:40 UTC10m
2026-05-23 CHH7759 SZX → TNA May 23, 07:05 UTCMay 23, 07:15 UTC10m
2026-05-22 CHH7739 SZX → TYN May 22, 22:30 UTCMay 22, 22:40 UTC10m
2026-05-22 CHH7710 SZX → PEK May 22, 09:15 UTCMay 22, 09:25 UTC10m
2026-05-22 CHH7762 NGB → SZX May 22, 04:10 UTCMay 22, 05:00 UTC50m
2026-05-21 CHH7761 SZX → NGB May 21, 22:50 UTCMay 21, 23:00 UTC10m
2026-05-21 CHH7873 XIY → SZX May 21, 19:30 UTCMay 21, 19:40 UTC10m
2026-05-21 CHH7874 SZX → XIY May 21, 09:15 UTCMay 21, 09:25 UTC10m
2026-05-17 CHH7054 HGH → HAK May 17, 03:35 UTCMay 17, 07:25 UTC3h 50m
2026-05-14 CHH7488 CGQ → HGH May 14, 12:45 UTCMay 14, 13:25 UTC40m
2026-05-13 CHH7054 HGH → HAK May 13, 03:05 UTCMay 13, 03:25 UTC20m
2026-05-11 CHH7054 HGH → HAK May 11, 02:55 UTCMay 11, 06:00 UTC3h 5m
2026-05-10 CHH7054 HGH → HAK May 10, 06:04 UTCMay 11, 03:20 UTC21h 15m
2026-05-10 CHH7054 HGH → HAK May 10, 02:39 UTCMay 10, 06:10 UTC3h 30m
2026-05-08 CHH7393 SZX → HGH May 8, 23:55 UTCMay 9, 00:10 UTC15m
2026-05-08 CHH7873 XIY → SZX May 8, 15:25 UTCMay 8, 15:35 UTC10m
2026-05-07 CHH7870 SZX → XIY May 7, 23:45 UTCMay 7, 23:59 UTC15m
2026-05-07 CHH7873 XIY → SZX May 7, 15:35 UTCMay 7, 15:45 UTC10m
2026-05-07 CHH7874 SZX → XIY May 7, 09:00 UTCMay 7, 09:10 UTC10m
2026-05-06 CHH7870 SZX → XIY May 6, 23:50 UTCMay 7, 00:05 UTC15m
2026-05-06 CHH7874 SZX → XIY May 6, 09:00 UTCMay 6, 09:15 UTC15m
2026-05-06 CHH7869 XIY → SZX May 6, 05:55 UTCMay 6, 06:10 UTC15m
2026-05-05 CHH7873 XIY → SZX May 5, 15:40 UTCMay 5, 15:50 UTC10m
2026-05-05 CHH7874 SZX → XIY May 5, 09:05 UTCMay 5, 09:15 UTC10m
2026-05-05 CHH7869 XIY → SZX May 5, 06:00 UTCMay 5, 06:10 UTC10m
2026-05-04 CHH7870 SZX → XIY May 4, 23:50 UTCMay 5, 00:00 UTC10m
2026-05-04 CHH7874 SZX → XIY May 4, 09:00 UTCMay 4, 09:10 UTC10m
2026-05-04 CHH7869 XIY → SZX May 4, 05:35 UTCMay 4, 05:50 UTC15m
2026-05-03 CHH7869 XIY → SZX May 3, 06:00 UTCMay 3, 06:15 UTC15m
2026-05-02 CHH7870 SZX → XIY May 2, 23:55 UTCMay 3, 00:05 UTC10m

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-1213 page for operator, model, and routing details .

Mode-S 781316 frequently asked

What is Mode-S code 781316?
781316 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1213.
Where is Mode-S 781316 registered?
Mode-S code 781316 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781316 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781316, octal 36011426, decimal 7,869,206.
What flights does 781316 operate?
Mode-S 781316 has broadcast 20 distinct callsigns, including CHH7874, CHH7872, CHH7870, CHH7054, CHH7873.