Apparatus

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sensors Mode-S transponder

78127B

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1337 · BOEING 737-800

Hex
78127B
Octal
36011173
Decimal
7,869,051
Country
CN
Tail
B-1337
Type
B738
No current signal · last broadcast 4d ago
Flights observed
49
Distinct callsigns
20
Country
CN
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 78127B.

Country allocation

The ICAO 24-bit address 78127B 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
CDG4911 Shandong Airlines 4 2026-05-18
CDG7948 Shandong Airlines 3 2026-06-08
CDG7943 - 2 2026-06-28
CDG4912 Shandong Airlines 2 2026-05-09
CDG4883 Shandong Airlines 2 2026-06-04
CDG4681 Shandong Airlines 2 2026-05-30
CDG2297 - 2 2026-06-27
CDG2289 - 2 2026-06-27
CDG1196 - 2 2026-06-29
CDG1162 - 2 2026-07-02
CDG1155 Shandong Airlines 2 2026-06-12
CDG8407 Shandong Airlines 1 2026-04-24
CDG8010 - 1 2026-04-13
CDG8009 Shandong Airlines 1 2026-04-13
CDG7975 - 1 2026-07-10
CDG7947 Shandong Airlines 1 2026-06-05
CDG7944 - 1 2026-06-28
CDG4884 Shandong Airlines 1 2026-05-05
CDG4781 Shandong Airlines 1 2026-04-24
CDG4652 - 1 2026-07-04

Recent flights last 49

DateFlightRouteTakeoffLandingDuration
2026-07-10 CDG7975 - Jul 10, 03:55 UTCJul 10, 04:15 UTC20m
2026-07-04 CDG4652 - Jul 4, 13:30 UTCJul 4, 13:40 UTC10m
2026-07-02 CDG1162 - Jul 2, 01:10 UTCJul 2, 01:20 UTC10m
2026-07-01 CDG1197 - Jul 1, 03:30 UTCJul 1, 03:40 UTC10m
2026-06-29 CDG1196 - Jun 29, 08:04 UTCJun 29, 08:14 UTC10m
2026-06-28 CDG1198 - Jun 28, 14:19 UTCJun 28, 14:30 UTC10m
2026-06-28 CDG7944 - Jun 28, 11:55 UTCJun 28, 12:09 UTC15m
2026-06-28 CDG7943 - Jun 28, 04:35 UTCJun 28, 04:44 UTC10m
2026-06-28 CDG7943 - Jun 28, 00:20 UTCJun 28, 00:30 UTC10m
2026-06-27 CDG2297 - Jun 27, 10:05 UTCJun 27, 10:14 UTC10m
2026-06-27 CDG2289 - Jun 27, 03:55 UTCJun 27, 04:09 UTC15m
2026-06-26 CDG1161 - Jun 26, 23:09 UTCJun 26, 23:30 UTC20m
2026-06-25 CDG1196 - Jun 25, 09:55 UTCJun 25, 10:04 UTC10m
2026-06-20 CDG2128 PEK → XMN Jun 20, 13:49 UTCJun 20, 14:05 UTC15m
2026-06-19 CDG1156 - Jun 19, 13:59 UTCJun 19, 14:15 UTC15m
2026-06-19 - - Jun 19, 12:19 UTCJun 19, 12:39 UTC20m
2026-06-19 CDG1160 - Jun 19, 03:24 UTCJun 19, 03:39 UTC15m
2026-06-18 CDG2298 SHA → ZUH Jun 18, 18:25 UTCJun 18, 18:35 UTC10m
2026-06-18 CDG2297 - Jun 18, 13:30 UTCJun 18, 13:45 UTC15m
2026-06-18 CDG2289 - Jun 18, 05:40 UTCJun 18, 05:55 UTC15m
2026-06-14 CDG1162 - Jun 14, 01:10 UTCJun 14, 01:20 UTC10m
2026-06-13 CDG2296 SHA → ZUH Jun 13, 14:30 UTCJun 13, 14:40 UTC10m
2026-06-13 CDG2295 ZUH → SHA Jun 13, 09:15 UTCJun 13, 09:30 UTC15m
2026-06-12 CDG1155 PEK → ZUH Jun 12, 17:00 UTCJun 12, 17:10 UTC10m
2026-06-12 CDG1155 PEK → ZUH Jun 12, 14:30 UTCJun 12, 14:40 UTC10m
2026-06-12 CDG2207 PEK → FOC Jun 12, 05:00 UTCJun 12, 05:15 UTC15m
2026-06-10 CDG2111 - Jun 10, 23:15 UTCJun 10, 23:25 UTC10m
2026-06-09 CDG2319 TYN → SHE Jun 9, 08:35 UTCJun 9, 08:45 UTC10m
2026-06-08 CDG7948 WUH → SHE Jun 8, 08:45 UTCJun 8, 09:00 UTC15m
2026-06-06 CDG7948 WUH → SHE Jun 6, 12:54 UTCJun 6, 13:05 UTC10m
2026-06-06 CDG7948 WUH → SHE Jun 6, 08:30 UTCJun 6, 08:45 UTC15m
2026-06-05 CDG7947 SHE → WUH Jun 5, 23:35 UTCJun 5, 23:55 UTC20m
2026-06-04 CDG4883 NGB → HAK Jun 4, 03:25 UTCJun 4, 07:25 UTC4h 0m
2026-05-30 CDG4681 TAO → SZX May 30, 03:05 UTCMay 30, 03:25 UTC20m
2026-05-18 CDG4911 FOC → ZUH May 18, 09:00 UTCMay 18, 09:20 UTC20m
2026-05-18 CDG4911 FOC → ZUH May 18, 06:05 UTCMay 18, 06:25 UTC20m
2026-05-09 CDG4912 FOC → TAO May 9, 11:00 UTCMay 9, 11:15 UTC15m
2026-05-09 CDG4911 FOC → ZUH May 9, 09:25 UTCMay 9, 09:45 UTC20m
2026-05-09 CDG4642 PEK → TAO May 9, 01:55 UTCMay 9, 02:05 UTC10m
2026-05-06 CDG4681 TAO → SZX May 6, 03:15 UTCMay 6, 03:35 UTC20m
2026-05-05 CDG4884 NGB → TAO May 5, 06:10 UTCMay 6, 02:10 UTC20h 0m
2026-05-05 CDG4883 NGB → HAK May 5, 03:15 UTCMay 5, 03:35 UTC20m
2026-04-24 CDG8407 HET → TNA Apr 24, 09:25 UTCApr 24, 09:50 UTC25m
2026-04-24 CDG4781 TAO → XMN Apr 24, 00:05 UTCApr 24, 00:40 UTC35m
2026-04-23 CDG4912 FOC → TAO Apr 23, 11:20 UTCApr 23, 11:30 UTC10m
2026-04-23 CDG4911 FOC → ZUH Apr 23, 08:55 UTCApr 23, 09:45 UTC50m
2026-04-15 - - Apr 15, 11:00 UTCApr 15, 11:15 UTC15m
2026-04-13 CDG8010 - Apr 13, 13:20 UTCApr 13, 13:30 UTC10m
2026-04-13 CDG8009 TNA → ICN Apr 13, 11:40 UTCApr 13, 11:50 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-1337 page for operator, model, and routing details .

Mode-S 78127B frequently asked

What is Mode-S code 78127B?
78127B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1337.
Where is Mode-S 78127B registered?
Mode-S code 78127B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78127B broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78127B, octal 36011173, decimal 7,869,051.
What flights does 78127B operate?
Mode-S 78127B has broadcast 20 distinct callsigns, including CDG4911, CDG7948, CDG7943, CDG4912, CDG4883.