Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781172

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1442 · BOEING 737-800

Hex
781172
Octal
36010562
Decimal
7,868,786
Country
CN
Tail
B-1442
Type
B738
No current signal · last broadcast Jul 26, 08:40 UTC
Flights observed
56
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 08:40 UTC

Last known position

Most recent position reported by Mode-S 781172.

Country allocation

The ICAO 24-bit address 781172 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
CDG4080 Shandong Airlines 6 2026-07-20
CDG4079 - 6 2026-07-20
CDG4631 - 3 2026-06-26
CDG4085 - 3 2026-06-14
CDG2240 - 3 2026-07-11
CDG8086 Shandong Airlines 2 2026-07-26
CDG8085 Shandong Airlines 2 2026-07-26
CDG8013 Shandong Airlines 2 2026-07-23
CDG8010 Shandong Airlines 2 2026-05-23
CDG8009 Shandong Airlines 2 2026-05-23
CDG4686 Shandong Airlines 2 2026-06-07
CDG4611 - 2 2026-06-26
CDG2239 - 2 2026-07-07
CDG8860 Shandong Airlines 1 2026-04-18
CDG8859 Shandong Airlines 1 2026-04-18
CDG8727 Shandong Airlines 1 2026-07-24
CDG8076 - 1 2026-04-15
CDG8075 - 1 2026-04-15
CDG8014 Shandong Airlines 1 2026-07-23
CDG8004 Shandong Airlines 1 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CDG8086 KIX → TNA Jul 26, 07:10 UTCJul 26, 08:40 UTC1h 30m
2026-07-26 CDG8085 TNA → KIX Jul 26, 04:10 UTCJul 26, 06:00 UTC1h 50m
2026-07-24 CDG8727 TNA → HET Jul 24, 23:05 UTCJul 24, 23:40 UTC35m
2026-07-23 CDG8004 ICN → TNA Jul 23, 14:50 UTCJul 23, 15:15 UTC25m
2026-07-23 CDG8013 SYX → TNA Jul 23, 13:05 UTCJul 23, 13:30 UTC25m
2026-07-23 CDG8013 SYX → TNA Jul 23, 05:20 UTCJul 23, 08:40 UTC3h 20m
2026-07-23 CDG8014 ICN → TNA Jul 23, 00:05 UTCJul 23, 00:25 UTC20m
2026-07-22 CDG8003 TNA → ICN Jul 22, 13:50 UTCJul 22, 14:15 UTC25m
2026-07-22 CDG4681 TAO → SZX Jul 22, 00:45 UTCJul 22, 01:35 UTC50m
2026-07-20 CDG4080 BKK → TAO Jul 20, 20:10 UTCJul 20, 21:50 UTC1h 40m
2026-07-20 CDG4079 - Jul 20, 17:15 UTCJul 20, 18:45 UTC1h 30m
2026-07-19 CDG4616 - Jul 19, 08:10 UTCJul 19, 08:35 UTC25m
2026-07-19 CDG4615 - Jul 19, 06:20 UTCJul 19, 06:45 UTC25m
2026-07-15 CDG2320 - Jul 15, 23:30 UTCJul 15, 23:40 UTC10m
2026-07-11 CDG2240 - Jul 11, 16:15 UTCJul 12, 05:10 UTC12h 55m
2026-07-07 CDG2239 - Jul 7, 23:40 UTCJul 8, 00:20 UTC40m
2026-07-03 CDG2240 - Jul 3, 04:15 UTCJul 3, 05:10 UTC55m
2026-06-29 CDG2185 - Jun 29, 10:34 UTCJun 29, 10:50 UTC15m
2026-06-26 CDG4632 - Jun 26, 12:39 UTCJun 26, 12:55 UTC15m
2026-06-26 CDG4631 - Jun 26, 10:20 UTCJun 26, 10:39 UTC20m
2026-06-26 CDG4631 - Jun 26, 05:24 UTCJun 26, 09:45 UTC4h 20m
2026-06-26 CDG4611 - Jun 26, 03:29 UTCJun 26, 04:00 UTC30m
2026-06-21 CDG4766 HGH → TAO Jun 21, 06:44 UTCJun 21, 07:14 UTC30m
2026-06-18 CDG4080 - Jun 18, 20:05 UTCJun 18, 21:55 UTC1h 50m
2026-06-18 CDG4079 - Jun 18, 16:55 UTCJun 18, 18:40 UTC1h 45m
2026-06-14 CDG4080 - Jun 14, 20:05 UTCJun 14, 21:45 UTC1h 40m
2026-06-14 CDG4079 - Jun 14, 09:40 UTCJun 14, 18:40 UTC9h 0m
2026-06-14 CDG4085 - Jun 14, 07:05 UTCJun 14, 08:30 UTC1h 25m
2026-06-13 CDG4085 - Jun 13, 10:35 UTCJun 14, 08:30 UTC21h 55m
2026-06-13 CDG4085 HKG → TPE Jun 13, 09:55 UTCJun 14, 08:30 UTC22h 35m
2026-06-13 CDG4631 TAO → HKG Jun 13, 06:25 UTCJun 13, 07:55 UTC1h 30m
2026-06-11 CDG4080 BKK → TAO Jun 11, 20:15 UTCJun 11, 21:55 UTC1h 40m
2026-06-11 CDG4079 TAO → BKK Jun 11, 16:55 UTCJun 11, 18:35 UTC1h 40m
2026-06-08 CDG4080 BKK → TAO Jun 8, 20:00 UTCJun 8, 20:25 UTC25m
2026-06-08 CDG4079 TAO → BKK Jun 8, 18:05 UTCJun 8, 18:35 UTC30m
2026-06-07 CDG4686 SZX → TAO Jun 7, 13:30 UTCJun 7, 13:40 UTC10m
2026-06-05 CDG4686 SZX → TAO Jun 5, 15:00 UTCJun 5, 15:10 UTC10m
2026-06-05 CDG4685 TAO → SZX Jun 5, 11:20 UTCJun 5, 12:30 UTC1h 10m
2026-06-05 CDG4612 ICN → TAO Jun 5, 05:10 UTCJun 5, 05:25 UTC15m
2026-06-05 CDG4611 TAO → ICN Jun 5, 03:15 UTCJun 5, 03:40 UTC25m
2026-06-04 CDG4080 BKK → TAO Jun 4, 20:10 UTCJun 4, 21:40 UTC1h 30m
2026-06-04 CDG4079 TAO → BKK Jun 4, 16:55 UTCJun 4, 18:50 UTC1h 55m
2026-05-23 CDG8010 ICN → TNA May 23, 13:20 UTCMay 23, 13:35 UTC15m
2026-05-23 CDG8009 TNA → ICN May 23, 11:35 UTCMay 23, 11:55 UTC20m
2026-05-22 CDG8086 KIX → TNA May 22, 07:20 UTCMay 22, 15:10 UTC7h 50m
2026-05-22 CDG8085 TNA → KIX May 22, 04:35 UTCMay 22, 06:10 UTC1h 35m
2026-05-19 CDG8010 ICN → TNA May 19, 13:25 UTCMay 19, 13:45 UTC20m
2026-05-19 CDG8009 TNA → ICN May 19, 11:20 UTCMay 19, 11:45 UTC25m
2026-05-03 CDG2239 - May 3, 00:01 UTCMay 3, 00:10 UTC10m
2026-04-28 CDG2240 - Apr 28, 05:10 UTCApr 28, 05:20 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-1442 page for operator, model, and routing details .

Mode-S 781172 frequently asked

What is Mode-S code 781172?
781172 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1442.
Where is Mode-S 781172 registered?
Mode-S code 781172 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781172 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 08:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781172, octal 36010562, decimal 7,868,786.
What flights does 781172 operate?
Mode-S 781172 has broadcast 20 distinct callsigns, including CDG4080, CDG4079, CDG4631, CDG4085, CDG2240.