Apparatus

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sensors Mode-S transponder

78072A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-2437 · BOEING 747-400

Hex
78072A
Octal
36003452
Decimal
7,866,154
Country
CN
Tail
B-2437
Type
B744
Broadcasting now · callsign YZR7451 · 33,000 ft
Flights observed
270
Distinct callsigns
9
Country
CN
Last broadcast
47m ago

Current position

78072A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 78072A 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 9 distinct

Callsign Airline Flights Last seen
YZR7451 - 126 2026-07-13
YZR7452 - 73 2026-07-12
YZR7459 - 33 2026-07-04
YZR7460 - 16 2026-07-04
YZR7461 - 9 2026-06-18
YZR7462 - 6 2026-06-19
YZR7455 Yangtze River Express 4 2026-05-07
YZR7439 - 2 2026-05-13
YZR7456 Yangtze River Express 1 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 YZR7451 - Jul 13, 23:00 UTCJul 14, 00:25 UTC1h 25m
2026-07-13 YZR7451 - Jul 13, 01:01 UTCJul 13, 21:25 UTC20h 25m
2026-07-12 YZR7452 - Jul 12, 20:35 UTCJul 13, 20:30 UTC23h 55m
2026-07-12 YZR7452 - Jul 12, 19:50 UTCJul 13, 15:35 UTC19h 45m
2026-07-12 YZR7451 ANC → ORD Jul 12, 10:45 UTCJul 12, 16:05 UTC5h 20m
2026-07-11 YZR7451 - Jul 11, 20:10 UTCJul 12, 09:20 UTC13h 10m
2026-07-11 YZR7452 - Jul 11, 12:40 UTCJul 12, 09:20 UTC20h 40m
2026-07-11 YZR7452 - Jul 11, 08:35 UTCJul 12, 08:30 UTC23h 55m
2026-07-11 YZR7452 - Jul 11, 07:30 UTCJul 12, 02:10 UTC18h 40m
2026-07-10 YZR7451 ANC → ORD Jul 10, 22:45 UTCJul 11, 04:01 UTC5h 15m
2026-07-10 YZR7451 - Jul 10, 13:45 UTCJul 10, 21:10 UTC7h 25m
2026-07-09 YZR7451 - Jul 9, 23:05 UTCJul 10, 21:10 UTC22h 5m
2026-07-09 YZR7452 - Jul 9, 16:35 UTCJul 10, 13:55 UTC21h 20m
2026-07-09 YZR7452 - Jul 9, 16:10 UTCJul 10, 13:55 UTC21h 45m
2026-07-09 YZR7452 - Jul 9, 10:50 UTCJul 9, 23:15 UTC12h 25m
2026-07-09 YZR7451 - Jul 9, 01:50 UTCJul 9, 07:00 UTC5h 10m
2026-07-08 YZR7451 - Jul 8, 07:10 UTCJul 8, 23:55 UTC16h 45m
2026-07-08 YZR7451 OTZ → ANC Jul 8, 00:35 UTCJul 8, 23:55 UTC23h 20m
2026-07-08 YZR7452 - Jul 8, 00:05 UTCJul 8, 16:30 UTC16h 25m
2026-07-07 YZR7452 - Jul 7, 18:35 UTCJul 8, 16:30 UTC21h 55m
2026-07-07 YZR7452 - Jul 7, 18:20 UTCJul 8, 16:30 UTC22h 10m
2026-07-07 YZR7451 ANC → ORD Jul 7, 09:10 UTCJul 7, 14:35 UTC5h 25m
2026-07-06 YZR7451 - Jul 6, 23:50 UTCJul 7, 07:25 UTC7h 35m
2026-07-06 YZR7451 - Jul 6, 10:40 UTCJul 7, 07:25 UTC20h 45m
2026-07-06 YZR7451 - Jul 6, 10:20 UTCJul 7, 07:25 UTC21h 5m
2026-07-06 YZR7452 - Jul 6, 06:35 UTCJul 7, 06:30 UTC23h 55m
2026-07-06 YZR7452 - Jul 6, 05:15 UTCJul 7, 01:20 UTC20h 5m
2026-07-05 YZR7451 ANC → ORD Jul 5, 17:10 UTCJul 5, 22:40 UTC5h 30m
2026-07-04 YZR7451 - Jul 4, 22:50 UTCJul 5, 15:35 UTC16h 45m
2026-07-04 YZR7451 - Jul 4, 14:35 UTCJul 5, 14:20 UTC23h 45m
2026-07-04 YZR7460 - Jul 4, 12:35 UTCJul 5, 09:40 UTC21h 5m
2026-07-04 YZR7460 - Jul 4, 10:55 UTCJul 5, 09:40 UTC22h 45m
2026-07-04 YZR7459 - Jul 4, 01:40 UTCJul 4, 06:25 UTC4h 45m
2026-07-03 YZR7459 - Jul 3, 16:40 UTCJul 4, 00:10 UTC7h 30m
2026-07-03 YZR7459 - Jul 3, 03:45 UTCJul 4, 00:10 UTC20h 25m
2026-07-02 YZR7459 - Jul 2, 20:35 UTCJul 3, 18:15 UTC21h 40m
2026-07-02 YZR7452 - Jul 2, 15:40 UTCJul 3, 03:55 UTC12h 15m
2026-07-02 YZR7451 ANC → ORD Jul 2, 06:41 UTCJul 2, 12:20 UTC5h 39m
2026-07-01 YZR7451 - Jul 1, 16:25 UTCJul 2, 05:20 UTC12h 55m
2026-07-01 YZR7451 - Jul 1, 09:20 UTCJul 2, 05:20 UTC20h 0m
2026-07-01 YZR7452 - Jul 1, 04:35 UTCJul 2, 04:30 UTC23h 55m
2026-07-01 YZR7452 - Jul 1, 04:15 UTCJul 1, 23:35 UTC19h 20m
2026-06-30 YZR7451 ANC → ORD Jun 30, 19:20 UTCJul 1, 01:05 UTC5h 45m
2026-06-30 YZR7451 - Jun 30, 00:45 UTCJun 30, 17:35 UTC16h 51m
2026-06-29 YZR7451 - Jun 29, 18:34 UTCJun 30, 17:35 UTC23h 1m
2026-06-29 YZR7460 - Jun 29, 14:34 UTCJun 30, 11:40 UTC21h 6m
2026-06-29 YZR7460 - Jun 29, 12:55 UTCJun 30, 11:40 UTC22h 46m
2026-06-29 YZR7459 - Jun 29, 04:30 UTCJun 29, 08:50 UTC4h 20m
2026-06-28 YZR7459 - Jun 28, 18:49 UTCJun 29, 02:00 UTC7h 10m
2026-06-28 YZR7459 - Jun 28, 02:34 UTCJun 29, 02:00 UTC23h 25m

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-2437 page for operator, model, and routing details .

Mode-S 78072A frequently asked

What is Mode-S code 78072A?
78072A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-2437.
Where is Mode-S 78072A registered?
Mode-S code 78072A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78072A broadcasting right now?
Yes. Mode-S 78072A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78072A, octal 36003452, decimal 7,866,154.
What flights does 78072A operate?
Mode-S 78072A has broadcast 9 distinct callsigns, including YZR7451, YZR7452, YZR7459, YZR7460, YZR7461.