Apparatus

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sensors Mode-S transponder

781F14

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-223H · BOEING 737-800

Hex
781F14
Octal
36017424
Decimal
7,872,276
Country
CN
Tail
B-223H
Type
B738
No current signal · last broadcast 7h ago
Flights observed
115
Distinct callsigns
6
Country
CN
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 781F14.

Country allocation

The ICAO 24-bit address 781F14 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 6 distinct

Callsign Airline Flights Last seen
CTJ3867 - 52 2026-07-17
CTJ3868 - 51 2026-07-17
CTJ3805 - 7 2026-05-09
CTJ3806 - 2 2026-04-29
CTJ3886 - 1 2026-06-29
CTJ386R - 1 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CTJ3868 - Jul 17, 19:35 UTCJul 17, 20:29 UTC55m
2026-07-17 CTJ3867 - Jul 17, 17:15 UTCJul 17, 18:25 UTC1h 10m
2026-07-16 CTJ3867 - Jul 16, 19:05 UTCJul 17, 18:25 UTC23h 20m
2026-07-16 CTJ3868 - Jul 16, 18:59 UTCJul 16, 19:55 UTC55m
2026-07-16 CTJ3867 - Jul 16, 17:05 UTCJul 16, 18:10 UTC1h 5m
2026-07-15 CTJ3867 - Jul 15, 19:10 UTCJul 16, 18:10 UTC23h 0m
2026-07-15 CTJ3867 - Jul 15, 17:05 UTCJul 15, 18:05 UTC1h 0m
2026-07-14 CTJ3867 - Jul 14, 19:05 UTCJul 15, 18:05 UTC22h 59m
2026-07-14 CTJ3867 - Jul 14, 16:50 UTCJul 14, 17:50 UTC1h 0m
2026-07-13 CTJ3868 - Jul 13, 19:25 UTCJul 13, 20:25 UTC1h 0m
2026-07-13 CTJ3867 - Jul 13, 17:00 UTCJul 13, 18:25 UTC1h 25m
2026-07-10 CTJ3868 - Jul 10, 19:25 UTCJul 10, 20:25 UTC1h 0m
2026-07-10 CTJ3867 - Jul 10, 17:15 UTCJul 10, 18:10 UTC55m
2026-07-09 CTJ3868 KIX → KIX Jul 9, 19:40 UTCJul 10, 18:10 UTC22h 30m
2026-07-09 CTJ3868 KIX → KIX Jul 9, 04:10 UTCJul 9, 18:40 UTC14h 30m
2026-07-08 CTJ3867 KIX → KIX Jul 8, 07:10 UTCJul 9, 02:45 UTC19h 35m
2026-07-07 CTJ3868 - Jul 7, 20:45 UTCJul 8, 06:05 UTC9h 20m
2026-07-07 CTJ3867 - Jul 7, 18:05 UTCJul 7, 19:05 UTC1h 0m
2026-07-03 CTJ3868 - Jul 3, 19:40 UTCJul 3, 20:40 UTC1h 0m
2026-07-03 CTJ3868 KIX → KIX Jul 3, 03:50 UTCJul 3, 18:20 UTC14h 30m
2026-07-03 CTJ3867 - Jul 3, 00:45 UTCJul 3, 01:45 UTC1h 0m
2026-07-02 CTJ3868 KIX → KIX Jul 2, 03:25 UTCJul 3, 01:45 UTC22h 20m
2026-07-02 CTJ3867 - Jul 2, 00:50 UTCJul 2, 01:55 UTC1h 5m
2026-06-30 CTJ3868 - Jun 30, 19:30 UTCJun 30, 20:30 UTC1h 0m
2026-06-30 CTJ3868 KIX → KIX Jun 30, 04:15 UTCJun 30, 18:20 UTC14h 5m
2026-06-29 CTJ3886 KIX → KIX Jun 29, 19:39 UTCJun 30, 02:40 UTC7h 0m
2026-06-29 CTJ3867 - Jun 29, 17:14 UTCJun 29, 18:19 UTC1h 5m
2026-06-27 CTJ3868 - Jun 27, 04:00 UTCJun 27, 04:59 UTC1h 0m
2026-06-26 CTJ3867 - Jun 26, 05:05 UTCJun 27, 02:35 UTC21h 30m
2026-06-26 CTJ3868 - Jun 26, 04:20 UTCJun 27, 02:35 UTC22h 15m
2026-06-26 CTJ3867 - Jun 26, 01:20 UTCJun 26, 02:14 UTC55m
2026-06-24 CTJ3868 - Jun 24, 19:55 UTCJun 24, 21:00 UTC1h 5m
2026-06-24 CTJ3867 - Jun 24, 17:55 UTCJun 24, 19:00 UTC1h 5m
2026-06-23 CTJ3868 - Jun 23, 19:19 UTCJun 24, 19:00 UTC23h 40m
2026-06-23 CTJ3867 - Jun 23, 17:04 UTCJun 23, 18:04 UTC1h 0m
2026-06-22 CTJ3868 - Jun 22, 19:14 UTCJun 22, 20:19 UTC1h 5m
2026-06-22 CTJ3867 - Jun 22, 17:04 UTCJun 22, 18:04 UTC1h 0m
2026-06-18 CTJ3868 - Jun 18, 18:50 UTCJun 18, 19:55 UTC1h 5m
2026-06-18 CTJ3868 KIX → KIX Jun 18, 04:00 UTCJun 18, 17:55 UTC13h 55m
2026-06-18 CTJ3867 FUJ → KIX Jun 18, 01:50 UTCJun 18, 02:45 UTC55m
2026-06-16 CTJ3868 - Jun 16, 18:50 UTCJun 16, 19:55 UTC1h 6m
2026-06-16 CTJ3868 - Jun 16, 03:25 UTCJun 16, 17:45 UTC14h 20m
2026-06-16 CTJ3867 - Jun 16, 01:10 UTCJun 16, 02:04 UTC55m
2026-06-12 CTJ3868 - Jun 12, 18:55 UTCJun 12, 20:05 UTC1h 10m
2026-06-12 CTJ3867 - Jun 12, 17:00 UTCJun 12, 17:50 UTC50m
2026-06-11 CTJ3867 - Jun 11, 19:05 UTCJun 12, 17:50 UTC22h 46m
2026-06-11 CTJ3868 - Jun 11, 18:25 UTCJun 12, 17:00 UTC22h 36m
2026-06-11 CTJ3868 - Jun 11, 03:15 UTCJun 11, 17:45 UTC14h 30m
2026-06-10 CTJ386R - Jun 10, 18:40 UTCJun 11, 02:00 UTC7h 20m
2026-06-10 CTJ3868 - Jun 10, 03:40 UTCJun 10, 17:40 UTC14h 0m

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-223H page for operator, model, and routing details .

Mode-S 781F14 frequently asked

What is Mode-S code 781F14?
781F14 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-223H.
Where is Mode-S 781F14 registered?
Mode-S code 781F14 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781F14 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781F14, octal 36017424, decimal 7,872,276.
What flights does 781F14 operate?
Mode-S 781F14 has broadcast 6 distinct callsigns, including CTJ3867, CTJ3868, CTJ3805, CTJ3806, CTJ3886.