Apparatus

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sensors Mode-S transponder

781E8C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-222P · BOEING 737-800

Hex
781E8C
Octal
36017214
Decimal
7,872,140
Country
CN
Tail
B-222P
Type
B738
No current signal · last broadcast Jul 26, 12:40 UTC
Flights observed
113
Distinct callsigns
15
Country
CN
Last broadcast
Jul 26, 12:40 UTC

Last known position

Most recent position reported by Mode-S 781E8C.

Country allocation

The ICAO 24-bit address 781E8C 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 15 distinct

Callsign Airline Flights Last seen
HLF9863 - 24 2026-06-19
HLF9864 Hapagfly 21 2026-06-19
HLF8863 - 16 2026-05-21
HLF8855 - 15 2026-05-19
HLF8856 - 10 2026-05-19
HLF8864 - 8 2026-05-21
HLF9849 - 6 2026-07-25
HLF9850 - 5 2026-07-25
HLF8803 Hapagfly 2 2026-07-25
HLF9832 - 1 2026-04-14
HLF9831 - 1 2026-04-14
HLF8870 - 1 2026-04-12
HLF8808 - 1 2026-07-26
HLF8807 - 1 2026-07-26
HLF8804 Hapagfly 1 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HLF8808 - Jul 26, 12:10 UTCJul 26, 12:40 UTC30m
2026-07-26 HLF8807 - Jul 26, 02:10 UTCJul 26, 10:00 UTC7h 51m
2026-07-25 HLF9849 - Jul 25, 19:30 UTCJul 26, 00:45 UTC5h 15m
2026-07-25 HLF8803 EHU → MNL Jul 25, 16:15 UTCJul 25, 17:55 UTC1h 40m
2026-07-25 HLF9850 - Jul 25, 01:55 UTCJul 25, 02:25 UTC30m
2026-07-25 HLF9849 - Jul 25, 00:25 UTCJul 25, 00:50 UTC25m
2026-07-24 HLF9850 - Jul 24, 02:25 UTCJul 24, 02:55 UTC30m
2026-07-23 HLF9849 - Jul 23, 23:15 UTCJul 24, 01:00 UTC1h 45m
2026-07-23 HLF9850 - Jul 23, 02:25 UTCJul 23, 02:55 UTC30m
2026-07-23 HLF9849 - Jul 23, 00:30 UTCJul 23, 01:00 UTC30m
2026-07-22 HLF9849 - Jul 22, 23:20 UTCJul 22, 23:40 UTC20m
2026-07-22 HLF9850 - Jul 22, 04:30 UTCJul 22, 04:45 UTC15m
2026-07-22 HLF9850 - Jul 22, 02:35 UTCJul 22, 03:10 UTC35m
2026-07-21 HLF9849 - Jul 21, 23:20 UTCJul 22, 00:50 UTC1h 30m
2026-07-18 HLF8804 MNL → EHU Jul 18, 22:35 UTCJul 18, 23:00 UTC25m
2026-07-18 HLF8803 EHU → MNL Jul 18, 16:15 UTCJul 18, 18:05 UTC1h 50m
2026-06-19 HLF9864 TAO → ONT Jun 19, 09:30 UTCJun 19, 09:40 UTC10m
2026-06-19 HLF9863 - Jun 19, 07:45 UTCJun 19, 08:04 UTC20m
2026-06-17 HLF9864 TAO → ONT Jun 17, 22:10 UTCJun 17, 22:20 UTC10m
2026-06-17 HLF9863 - Jun 17, 20:10 UTCJun 17, 20:20 UTC10m
2026-06-16 HLF9864 TAO → ONT Jun 16, 22:15 UTCJun 16, 22:25 UTC10m
2026-06-16 HLF9863 - Jun 16, 19:50 UTCJun 16, 20:05 UTC15m
2026-06-16 HLF9864 TAO → ONT Jun 16, 11:05 UTCJun 16, 11:15 UTC10m
2026-06-16 HLF9863 - Jun 16, 05:30 UTCJun 16, 05:40 UTC10m
2026-06-14 HLF9864 TAO → ONT Jun 14, 21:55 UTCJun 14, 22:05 UTC10m
2026-06-14 HLF9863 - Jun 14, 19:25 UTCJun 14, 19:40 UTC15m
2026-06-13 HLF9864 TAO → ONT Jun 13, 21:50 UTCJun 13, 22:00 UTC10m
2026-06-13 HLF9863 - Jun 13, 20:00 UTCJun 13, 20:10 UTC10m
2026-06-12 HLF9864 TAO → ONT Jun 12, 22:00 UTCJun 12, 22:10 UTC10m
2026-06-12 HLF9863 - Jun 12, 19:40 UTCJun 12, 20:05 UTC25m
2026-06-11 HLF9864 TAO → ONT Jun 11, 21:55 UTCJun 11, 22:05 UTC10m
2026-06-11 HLF9863 - Jun 11, 19:40 UTCJun 11, 20:05 UTC25m
2026-06-10 HLF9864 TAO → ONT Jun 10, 21:50 UTCJun 10, 22:05 UTC15m
2026-06-10 HLF9863 - Jun 10, 20:00 UTCJun 10, 20:10 UTC10m
2026-06-09 HLF9863 - Jun 9, 20:15 UTCJun 9, 20:50 UTC35m
2026-06-08 HLF9863 - Jun 8, 20:10 UTCJun 8, 20:25 UTC15m
2026-06-07 HLF9864 TAO → ONT Jun 7, 21:50 UTCJun 7, 22:00 UTC10m
2026-06-06 HLF9864 TAO → ONT Jun 6, 22:10 UTCJun 6, 22:20 UTC10m
2026-06-06 HLF9863 - Jun 6, 19:40 UTCJun 6, 20:00 UTC20m
2026-06-05 HLF9864 TAO → ONT Jun 5, 22:00 UTCJun 5, 22:10 UTC10m
2026-06-05 HLF9863 - Jun 5, 19:45 UTCJun 5, 20:05 UTC20m
2026-06-04 HLF9864 TAO → ONT Jun 4, 22:00 UTCJun 4, 22:10 UTC10m
2026-06-04 HLF9863 - Jun 4, 19:40 UTCJun 4, 20:05 UTC25m
2026-06-03 HLF9864 TAO → ONT Jun 3, 22:20 UTCJun 3, 22:30 UTC10m
2026-06-03 HLF9863 - Jun 3, 20:20 UTCJun 3, 20:45 UTC25m
2026-06-02 HLF9864 TAO → ONT Jun 2, 22:05 UTCJun 2, 22:15 UTC10m
2026-06-02 HLF9863 - Jun 2, 19:15 UTCJun 2, 20:25 UTC1h 10m
2026-06-01 HLF9864 TAO → ONT Jun 1, 21:55 UTCJun 1, 22:05 UTC10m
2026-06-01 HLF9863 - Jun 1, 20:00 UTCJun 1, 20:20 UTC20m
2026-05-31 HLF9864 TAO → ONT May 31, 22:00 UTCMay 31, 22:10 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-222P page for operator, model, and routing details .

Mode-S 781E8C frequently asked

What is Mode-S code 781E8C?
781E8C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-222P.
Where is Mode-S 781E8C registered?
Mode-S code 781E8C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E8C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E8C, octal 36017214, decimal 7,872,140.
What flights does 781E8C operate?
Mode-S 781E8C has broadcast 15 distinct callsigns, including HLF9863, HLF9864, HLF8863, HLF8855, HLF8856.