Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

78141D

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1142 · BOEING 737 MAX 8

Hex
78141D
Octal
36012035
Decimal
7,869,469
Country
CN
Tail
B-1142
Type
B38M
No current signal · last broadcast 10h ago
Flights observed
151
Distinct callsigns
20
Country
CN
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 78141D.

Country allocation

The ICAO 24-bit address 78141D 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
CHH447 Hainan Airlines 10 2026-06-08
CHH7924 - 7 2026-07-14
CHH7909 Hainan Airlines 7 2026-06-09
CHH756 - 7 2026-07-01
CHH755 - 7 2026-07-01
CHH7923 - 6 2026-07-14
CHH748 Hainan Airlines 6 2026-06-06
CHH791 - 5 2026-06-28
CHH474 Hainan Airlines 5 2026-06-13
CHH473 - 5 2026-06-13
CHH448 Hainan Airlines 5 2026-06-10
CHH7996 Hainan Airlines 4 2026-05-09
CHH7995 Hainan Airlines 4 2026-05-09
CHH7910 Hainan Airlines 4 2026-06-08
CHH747 Hainan Airlines 4 2026-05-28
CHH430 - 4 2026-07-08
CHH429 - 4 2026-07-08
CHH7567 Hainan Airlines 3 2026-05-07
CHH7066 Hainan Airlines 3 2026-04-29
CHH701 - 3 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CHH7924 - Jul 14, 09:25 UTCJul 14, 09:45 UTC20m
2026-07-14 CHH7924 - Jul 14, 06:45 UTCJul 14, 07:00 UTC15m
2026-07-14 CHH7923 - Jul 14, 01:20 UTCJul 14, 04:30 UTC3h 10m
2026-07-12 CHH7924 - Jul 12, 06:20 UTCJul 12, 09:25 UTC3h 5m
2026-07-11 CHH7923 - Jul 11, 09:20 UTCJul 12, 04:45 UTC19h 25m
2026-07-11 CHH7924 - Jul 11, 06:35 UTCJul 12, 02:05 UTC19h 30m
2026-07-10 CHH7923 - Jul 10, 09:20 UTCJul 11, 04:20 UTC19h 0m
2026-07-10 CHH7923 - Jul 10, 09:10 UTCJul 11, 04:20 UTC19h 10m
2026-07-10 CHH7924 - Jul 10, 06:30 UTCJul 11, 01:15 UTC18h 45m
2026-07-10 CHH7923 - Jul 10, 04:15 UTCJul 10, 04:30 UTC15m
2026-07-09 CHH7924 - Jul 9, 09:20 UTCJul 10, 01:50 UTC16h 30m
2026-07-09 CHH7924 - Jul 9, 06:40 UTCJul 10, 01:50 UTC19h 10m
2026-07-08 CHH7923 - Jul 8, 13:25 UTCJul 9, 04:35 UTC15h 10m
2026-07-08 CHH430 - Jul 8, 07:00 UTCJul 8, 09:00 UTC2h 0m
2026-07-08 CHH429 - Jul 8, 00:45 UTCJul 8, 05:10 UTC4h 25m
2026-07-06 CHH7032 - Jul 6, 06:20 UTCJul 6, 06:35 UTC15m
2026-07-01 CHH756 - Jul 1, 13:10 UTCJul 1, 13:25 UTC15m
2026-07-01 CHH497 - Jul 1, 11:15 UTCJul 1, 11:40 UTC25m
2026-07-01 CHH498 - Jul 1, 04:40 UTCJul 1, 05:00 UTC20m
2026-07-01 CHH755 - Jul 1, 02:35 UTCJul 1, 02:55 UTC20m
2026-06-30 CHH756 - Jun 30, 13:00 UTCJun 30, 13:15 UTC15m
2026-06-30 CHH755 - Jun 30, 11:00 UTCJun 30, 11:25 UTC25m
2026-06-29 CHH792 - Jun 29, 06:09 UTCJun 29, 10:40 UTC4h 30m
2026-06-28 CHH791 - Jun 28, 09:20 UTCJun 29, 04:00 UTC18h 40m
2026-06-28 CHH791 - Jun 28, 08:59 UTCJun 29, 04:00 UTC19h 0m
2026-06-28 CHH791 - Jun 28, 06:10 UTCJun 29, 04:00 UTC21h 50m
2026-06-27 CHH706 - Jun 27, 14:09 UTCJun 27, 14:20 UTC10m
2026-06-27 CHH7915 - Jun 27, 12:25 UTCJun 27, 12:55 UTC30m
2026-06-27 CHH7916 - Jun 27, 06:30 UTCJun 27, 10:19 UTC3h 50m
2026-06-27 CHH7916 - Jun 27, 03:49 UTCJun 27, 04:09 UTC20m
2026-06-27 CHH705 - Jun 27, 00:20 UTCJun 27, 00:25 UTC5m
2026-06-26 CHH756 - Jun 26, 13:24 UTCJun 26, 16:20 UTC2h 55m
2026-06-26 CHH755 - Jun 26, 11:30 UTCJun 26, 11:55 UTC25m
2026-06-25 CHH756 - Jun 25, 13:14 UTCJun 26, 07:00 UTC17h 45m
2026-06-25 CHH755 - Jun 25, 08:50 UTCJun 25, 11:30 UTC2h 40m
2026-06-25 CHH7088 TFU → HAK Jun 25, 06:00 UTCJun 25, 06:09 UTC10m
2026-06-25 CHH7087 HAK → TFU Jun 25, 01:44 UTCJun 25, 01:59 UTC15m
2026-06-24 CHH7339 SYX → CKG Jun 24, 04:50 UTCJun 24, 08:49 UTC4h 0m
2026-06-24 CHH7340 CKG → SYX Jun 24, 01:55 UTCJun 24, 02:09 UTC15m
2026-06-21 CHH7367 PEK → CKG Jun 21, 13:29 UTCJun 21, 13:44 UTC15m
2026-06-21 CHH430 - Jun 21, 07:09 UTCJun 21, 09:00 UTC1h 50m
2026-06-21 CHH429 - Jun 21, 00:29 UTCJun 21, 05:00 UTC4h 30m
2026-06-20 CHH7029 HAK → KWE Jun 20, 08:29 UTCJun 20, 08:44 UTC15m
2026-06-19 CHH7289 PEK → KWE Jun 19, 23:49 UTCJun 20, 04:59 UTC5h 10m
2026-06-19 CHH430 - Jun 19, 08:14 UTCJun 19, 08:54 UTC40m
2026-06-19 CHH430 - Jun 19, 07:09 UTCJun 19, 07:25 UTC15m
2026-06-19 CHH429 - Jun 19, 03:15 UTCJun 19, 04:54 UTC1h 40m
2026-06-18 CHH429 - Jun 18, 08:50 UTCJun 19, 04:54 UTC20h 4m
2026-06-17 CHH7056 - Jun 17, 13:30 UTCJun 18, 06:10 UTC16h 40m
2026-06-15 CHH702 CGK → HAK Jun 15, 12:35 UTCJun 15, 14:05 UTC1h 30m

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-1142 page for operator, model, and routing details .

Mode-S 78141D frequently asked

What is Mode-S code 78141D?
78141D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1142.
Where is Mode-S 78141D registered?
Mode-S code 78141D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78141D broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78141D, octal 36012035, decimal 7,869,469.
What flights does 78141D operate?
Mode-S 78141D has broadcast 20 distinct callsigns, including CHH447, CHH7924, CHH7909, CHH756, CHH755.