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 YZR7461 · 10,675 ft
Flights observed
146
Distinct callsigns
9
Country
CN
Last broadcast
2h 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 Yangtze River Express 76 2026-05-28
YZR7452 Yangtze River Express 37 2026-05-28
YZR7459 Yangtze River Express 14 2026-05-26
YZR7460 Yangtze River Express 6 2026-05-27
YZR7461 Yangtze River Express 4 2026-05-28
YZR7455 Yangtze River Express 4 2026-05-07
YZR7462 Yangtze River Express 2 2026-05-19
YZR7439 - 2 2026-05-13
YZR7456 Yangtze River Express 1 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 YZR7461 PVG → LAX May 28, 22:35 UTCMay 29, 21:05 UTC22h 31m
2026-05-28 YZR7461 PVG → LAX May 28, 22:10 UTCMay 29, 20:30 UTC22h 20m
2026-05-28 YZR7452 ORD → ANC May 28, 16:40 UTCMay 29, 15:20 UTC22h 40m
2026-05-28 YZR7451 NKG → ANC May 28, 06:55 UTCMay 28, 12:30 UTC5h 35m
2026-05-27 YZR7451 NKG → ANC May 27, 16:05 UTCMay 28, 05:20 UTC13h 15m
2026-05-27 YZR7451 NKG → ANC May 27, 08:35 UTCMay 28, 05:20 UTC20h 45m
2026-05-27 YZR7451 NKG → ANC May 27, 07:15 UTCMay 28, 05:20 UTC22h 5m
2026-05-27 YZR7460 DFW → PVG May 27, 04:34 UTCMay 28, 04:30 UTC23h 55m
2026-05-27 YZR7460 DFW → PVG May 27, 03:50 UTCMay 27, 23:30 UTC19h 41m
2026-05-26 YZR7459 NKG → ANC May 26, 19:20 UTCMay 26, 23:29 UTC4h 10m
2026-05-26 YZR7459 NKG → ANC May 26, 01:30 UTCMay 26, 17:59 UTC16h 30m
2026-05-25 YZR7459 NKG → ANC May 25, 18:35 UTCMay 26, 17:59 UTC23h 24m
2026-05-25 YZR7459 NKG → ANC May 25, 18:20 UTCMay 26, 16:30 UTC22h 10m
2026-05-25 YZR7452 ORD → ANC May 25, 12:35 UTCMay 26, 11:50 UTC23h 15m
2026-05-25 YZR7451 NKG → ANC May 25, 03:00 UTCMay 25, 08:20 UTC5h 20m
2026-05-23 YZR7452 ORD → ANC May 23, 22:15 UTCMay 24, 04:35 UTC6h 20m
2026-05-23 YZR7451 NKG → ANC May 23, 12:15 UTCMay 23, 17:45 UTC5h 30m
2026-05-23 YZR7451 NKG → ANC May 23, 09:15 UTCMay 23, 10:35 UTC1h 20m
2026-05-22 YZR7451 NKG → ANC May 22, 14:35 UTCMay 23, 10:35 UTC20h 0m
2026-05-22 YZR7451 NKG → ANC May 22, 14:15 UTCMay 23, 10:35 UTC20h 19m
2026-05-22 YZR7452 ORD → ANC May 22, 10:35 UTCMay 23, 10:30 UTC23h 54m
2026-05-22 YZR7452 ORD → ANC May 22, 08:45 UTCMay 22, 15:10 UTC6h 25m
2026-05-21 YZR7451 NKG → ANC May 21, 23:50 UTCMay 22, 05:15 UTC5h 25m
2026-05-21 YZR7451 NKG → ANC May 21, 14:45 UTCMay 21, 21:55 UTC7h 10m
2026-05-21 YZR7451 NKG → ANC May 21, 02:00 UTCMay 21, 21:55 UTC19h 55m
2026-05-20 YZR7452 ORD → ANC May 20, 18:55 UTCMay 21, 16:01 UTC21h 5m
2026-05-20 YZR7452 ORD → ANC May 20, 13:20 UTCMay 21, 02:10 UTC12h 50m
2026-05-20 YZR7451 NKG → ANC May 20, 04:20 UTCMay 20, 09:35 UTC5h 16m
2026-05-19 YZR7451 NKG → ANC May 19, 08:35 UTCMay 20, 02:40 UTC18h 5m
2026-05-19 YZR7451 NKG → ANC May 19, 07:55 UTCMay 20, 02:40 UTC18h 45m
2026-05-19 YZR7451 NKG → ANC May 19, 02:35 UTCMay 20, 02:30 UTC23h 55m
2026-05-19 YZR7462 PRG → LUX May 19, 01:25 UTCMay 19, 21:00 UTC19h 35m
2026-05-18 YZR7462 PRG → LUX May 18, 16:55 UTCMay 18, 23:20 UTC6h 24m
2026-05-18 YZR7461 PVG → LAX May 18, 05:45 UTCMay 18, 10:55 UTC5h 10m
2026-05-17 YZR7461 PVG → LAX May 17, 20:05 UTCMay 18, 03:35 UTC7h 30m
2026-05-16 YZR7452 ORD → ANC May 16, 12:35 UTCMay 16, 19:00 UTC6h 25m
2026-05-16 YZR7451 NKG → ANC May 16, 03:45 UTCMay 16, 09:21 UTC5h 36m
2026-05-15 YZR7451 NKG → ANC May 15, 18:10 UTCMay 16, 01:50 UTC7h 40m
2026-05-15 YZR7451 NKG → ANC May 15, 02:35 UTCMay 16, 01:50 UTC23h 14m
2026-05-15 YZR7451 NKG → ANC May 15, 01:45 UTCMay 16, 00:30 UTC22h 44m
2026-05-14 YZR7452 ORD → ANC May 14, 22:35 UTCMay 15, 19:40 UTC21h 4m
2026-05-14 YZR7452 ORD → ANC May 14, 21:10 UTCMay 15, 19:40 UTC22h 29m
2026-05-14 YZR7451 NKG → ANC May 14, 11:55 UTCMay 14, 17:30 UTC5h 35m
2026-05-13 YZR7451 NKG → ANC May 13, 17:10 UTCMay 14, 09:30 UTC16h 20m
2026-05-13 YZR7451 NKG → ANC May 13, 12:35 UTCMay 14, 09:30 UTC20h 55m
2026-05-13 YZR7451 NKG → ANC May 13, 12:15 UTCMay 14, 09:30 UTC21h 15m
2026-05-13 YZR7439 - May 13, 02:25 UTCMay 13, 08:20 UTC5h 55m
2026-05-12 YZR7439 - May 12, 10:35 UTCMay 13, 08:20 UTC21h 45m
2026-05-12 YZR7452 ORD → ANC May 12, 09:50 UTCMay 13, 08:20 UTC22h 30m
2026-05-12 YZR7452 ORD → ANC May 12, 04:35 UTCMay 13, 02:55 UTC22h 20m

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.