Apparatus

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sensors Mode-S transponder

78136D

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1252 · BOEING 757-200

Hex
78136D
Octal
36011555
Decimal
7,869,293
Country
CN
Tail
B-1252
Type
B752
No current signal · last broadcast 6h ago
Flights observed
59
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 78136D.

Country allocation

The ICAO 24-bit address 78136D 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
CSS6828 SF Airlines 7 2026-05-23
CSS6827 SF Airlines 7 2026-05-23
CSS7125 SF Airlines 6 2026-05-07
CSS7410 SF Airlines 4 2026-05-18
CSS326 SF Airlines 4 2026-04-17
CSS325 SF Airlines 4 2026-04-17
CSS6846 SF Airlines 2 2026-04-21
CSS6812 SF Airlines 2 2026-05-29
CSS318 - 2 2026-05-23
CSS317 SF Airlines 2 2026-05-23
CSS7413 - 1 2026-05-15
CSS7411 SF Airlines 1 2026-05-16
CSS7409 - 1 2026-05-18
CSS7277 - 1 2026-05-28
CSS7240 SF Airlines 1 2026-05-01
CSS7204 SF Airlines 1 2026-05-12
CSS7203 SF Airlines 1 2026-05-12
CSS7119 SF Airlines 1 2026-05-09
CSS7103 SF Airlines 1 2026-05-03
CSS6927 - 1 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSS6812 PEK → SZX May 29, 22:50 UTCMay 29, 23:05 UTC15m
2026-05-29 CSS6812 PEK → SZX May 29, 20:25 UTCMay 29, 20:45 UTC20m
2026-05-28 CSS6839 SZX → WUX May 28, 21:55 UTCMay 28, 22:05 UTC10m
2026-05-28 CSS7277 - May 28, 19:30 UTCMay 28, 19:45 UTC15m
2026-05-24 CSS3060 - May 24, 12:10 UTCMay 24, 12:20 UTC10m
2026-05-23 CSS6828 PVG → SZX May 23, 22:30 UTCMay 23, 23:25 UTC55m
2026-05-23 CSS6827 SZX → PVG May 23, 17:20 UTCMay 23, 17:35 UTC15m
2026-05-23 CSS318 - May 23, 10:00 UTCMay 23, 10:25 UTC25m
2026-05-23 CSS317 SZX → SGN May 23, 04:00 UTCMay 23, 04:10 UTC10m
2026-05-22 CSS6828 PVG → SZX May 22, 21:45 UTCMay 22, 23:00 UTC1h 15m
2026-05-22 CSS6827 SZX → PVG May 22, 17:25 UTCMay 22, 17:35 UTC10m
2026-05-22 CSS318 - May 22, 09:15 UTCMay 22, 09:30 UTC15m
2026-05-22 CSS317 SZX → SGN May 22, 03:05 UTCMay 22, 03:15 UTC10m
2026-05-21 CSS6828 PVG → SZX May 21, 23:20 UTCMay 22, 00:15 UTC55m
2026-05-21 CSS6827 SZX → PVG May 21, 18:50 UTCMay 21, 19:00 UTC10m
2026-05-20 CSS6927 - May 20, 21:40 UTCMay 20, 22:05 UTC25m
2026-05-19 CSS6924 SZX → WUH May 19, 20:20 UTCMay 19, 20:35 UTC15m
2026-05-18 CSS7410 SZX → CTU May 18, 19:15 UTCMay 18, 19:30 UTC15m
2026-05-18 CSS7409 - May 18, 17:35 UTCMay 18, 17:45 UTC10m
2026-05-17 CSS7410 SZX → CTU May 17, 20:05 UTCMay 17, 20:20 UTC15m
2026-05-16 CSS7410 SZX → CTU May 16, 20:10 UTCMay 16, 20:30 UTC20m
2026-05-16 CSS7411 CTU → SZX May 16, 18:15 UTCMay 16, 18:30 UTC15m
2026-05-15 CSS7410 SZX → CTU May 15, 19:40 UTCMay 15, 19:50 UTC10m
2026-05-15 CSS7413 - May 15, 17:50 UTCMay 15, 18:00 UTC10m
2026-05-12 CSS7204 SZX → PVG May 12, 19:50 UTCMay 12, 20:01 UTC10m
2026-05-12 CSS7203 PVG → SZX May 12, 17:40 UTCMay 12, 18:00 UTC20m
2026-05-11 CSS6811 SZX → PEK May 11, 16:55 UTCMay 11, 17:10 UTC16m
2026-05-10 CSS6836 HGH → SZX May 10, 21:59 UTCMay 10, 22:20 UTC20m
2026-05-09 CSS7119 PEK → HGH May 9, 16:35 UTCMay 9, 16:50 UTC15m
2026-05-07 CSS7125 PEK → WUX May 7, 16:55 UTCMay 7, 17:05 UTC10m
2026-05-06 CSS7125 PEK → WUX May 6, 16:50 UTCMay 6, 17:05 UTC15m
2026-05-03 CSS7103 PEK → EHU May 3, 16:40 UTCMay 3, 16:50 UTC10m
2026-05-01 CSS7240 PEK → HGH May 1, 20:35 UTCMay 1, 20:50 UTC15m
2026-04-30 CSS7125 PEK → WUX Apr 30, 16:55 UTCApr 30, 17:10 UTC15m
2026-04-29 CSS7125 PEK → WUX Apr 29, 16:55 UTCApr 29, 17:10 UTC15m
2026-04-28 CSS7125 PEK → WUX Apr 28, 16:55 UTCApr 28, 17:05 UTC10m
2026-04-27 CSS7125 PEK → WUX Apr 27, 16:50 UTCApr 27, 17:00 UTC10m
2026-04-23 CSS6803 SZX → EHU Apr 23, 17:35 UTCApr 23, 17:45 UTC9m
2026-04-22 CSS6828 PVG → SZX Apr 22, 00:45 UTCApr 22, 02:00 UTC1h 15m
2026-04-21 CSS6827 SZX → PVG Apr 21, 17:15 UTCApr 21, 17:25 UTC10m
2026-04-21 CSS6846 NTG → SZX Apr 21, 00:00 UTCApr 21, 00:15 UTC15m
2026-04-20 CSS6846 NTG → SZX Apr 20, 23:05 UTCApr 20, 23:20 UTC15m
2026-04-20 CSS6845 - Apr 20, 19:05 UTCApr 20, 19:15 UTC10m
2026-04-19 CSS6804 EHU → SZX Apr 19, 21:30 UTCApr 19, 21:50 UTC20m
2026-04-18 CSS6827 - Apr 18, 17:15 UTCApr 18, 17:25 UTC10m
2026-04-17 CSS326 MNL → SZX Apr 17, 22:15 UTCApr 17, 22:25 UTC10m
2026-04-17 CSS326 MNL → SZX Apr 17, 20:30 UTCApr 17, 21:05 UTC35m
2026-04-17 CSS325 SZX → MNL Apr 17, 17:25 UTCApr 17, 18:55 UTC1h 30m
2026-04-17 CSS325 SZX → MNL Apr 17, 17:05 UTCApr 17, 17:15 UTC10m
2026-04-16 CSS326 MNL → SZX Apr 16, 22:15 UTCApr 16, 22:30 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-1252 page for operator, model, and routing details .

Mode-S 78136D frequently asked

What is Mode-S code 78136D?
78136D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1252.
Where is Mode-S 78136D registered?
Mode-S code 78136D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78136D broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78136D, octal 36011555, decimal 7,869,293.
What flights does 78136D operate?
Mode-S 78136D has broadcast 20 distinct callsigns, including CSS6828, CSS6827, CSS7125, CSS7410, CSS326.