Apparatus

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sensors Mode-S transponder

78091E

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5692 · BOEING 737-800

Hex
78091E
Octal
36004436
Decimal
7,866,654
Country
CN
Tail
B-5692
Type
B738
No current signal · last broadcast Jul 26, 07:40 UTC
Flights observed
106
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 07:40 UTC

Last known position

Most recent position reported by Mode-S 78091E.

Country allocation

The ICAO 24-bit address 78091E 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
YZR7579 - 16 2026-07-15
YZR7525 - 16 2026-07-01
YZR7565 Yangtze River Express 9 2026-07-20
YZR7537 - 7 2026-07-13
YZR7526 - 6 2026-07-02
YZR7566 Yangtze River Express 5 2026-07-20
YZR7535 - 5 2026-06-30
YZR7573 Yangtze River Express 4 2026-07-20
YZR7569 - 3 2026-07-16
YZR7554 Yangtze River Express 3 2026-07-26
YZR7536 - 3 2026-06-30
YZR7532 Yangtze River Express 3 2026-07-17
YZR7527 - 3 2026-07-07
YZR7501 - 3 2026-06-26
YZR7570 Yangtze River Express 2 2026-06-16
YZR7544 - 2 2026-06-29
YZR7543 - 2 2026-06-28
YZR7599 - 1 2026-07-08
YZR7596 Yangtze River Express 1 2026-06-05
YZR7591 Yangtze River Express 1 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 YZR7554 ZUH → CGO Jul 26, 07:05 UTCJul 26, 07:40 UTC35m
2026-07-23 YZR7554 ZUH → CGO Jul 23, 05:35 UTCJul 23, 23:45 UTC18h 10m
2026-07-23 YZR7554 ZUH → CGO Jul 23, 05:25 UTCJul 23, 23:45 UTC18h 20m
2026-07-21 - - Jul 21, 23:50 UTCJul 22, 00:05 UTC15m
2026-07-20 YZR7565 SZX → PVG Jul 20, 23:15 UTCJul 20, 23:25 UTC10m
2026-07-20 YZR7574 - Jul 20, 13:35 UTCJul 20, 13:45 UTC10m
2026-07-20 YZR7573 SZX → DYG Jul 20, 09:20 UTCJul 20, 09:30 UTC10m
2026-07-20 YZR7566 PVG → SZX Jul 20, 07:00 UTCJul 20, 07:50 UTC50m
2026-07-19 YZR7590 WEH → PVG Jul 19, 01:45 UTCJul 19, 01:55 UTC10m
2026-07-17 YZR7532 HGH → SZX Jul 17, 03:25 UTCJul 17, 11:55 UTC8h 30m
2026-07-16 YZR7569 - Jul 16, 00:50 UTCJul 16, 01:00 UTC10m
2026-07-15 YZR7579 - Jul 15, 05:30 UTCJul 15, 06:10 UTC40m
2026-07-14 YZR7579 - Jul 14, 06:15 UTCJul 14, 06:35 UTC20m
2026-07-13 YZR7537 - Jul 13, 23:35 UTCJul 13, 23:45 UTC10m
2026-07-13 YZR7579 - Jul 13, 05:40 UTCJul 13, 09:05 UTC3h 25m
2026-07-12 YZR7537 - Jul 12, 22:55 UTCJul 12, 23:05 UTC10m
2026-07-12 YZR7579 - Jul 12, 05:30 UTCJul 12, 08:45 UTC3h 15m
2026-07-11 YZR7537 - Jul 11, 22:55 UTCJul 11, 23:10 UTC15m
2026-07-11 YZR7575 - Jul 11, 09:30 UTCJul 11, 09:45 UTC15m
2026-07-11 YZR7566 - Jul 11, 08:10 UTCJul 11, 08:20 UTC10m
2026-07-09 YZR7565 - Jul 9, 22:40 UTCJul 9, 22:55 UTC15m
2026-07-09 YZR7538 - Jul 9, 19:10 UTCJul 9, 19:20 UTC10m
2026-07-09 YZR7579 - Jul 9, 05:50 UTCJul 9, 09:15 UTC3h 25m
2026-07-08 YZR7599 - Jul 8, 18:20 UTCJul 8, 18:30 UTC10m
2026-07-08 YZR7557 - Jul 8, 09:50 UTCJul 8, 10:05 UTC15m
2026-07-07 YZR7527 - Jul 7, 04:05 UTCJul 7, 04:15 UTC10m
2026-07-06 YZR7579 - Jul 6, 07:15 UTCJul 6, 11:15 UTC4h 0m
2026-07-05 YZR7537 - Jul 5, 23:00 UTCJul 5, 23:10 UTC10m
2026-07-05 YZR7579 - Jul 5, 07:45 UTCJul 5, 08:05 UTC20m
2026-07-04 YZR7537 - Jul 4, 23:05 UTCJul 4, 23:15 UTC10m
2026-07-04 YZR7569 - Jul 4, 01:30 UTCJul 4, 01:40 UTC10m
2026-07-02 YZR7591 SZX → ACX Jul 2, 22:35 UTCJul 2, 22:45 UTC10m
2026-07-02 YZR7526 - Jul 2, 19:20 UTCJul 2, 19:35 UTC15m
2026-07-01 YZR7525 - Jul 1, 22:20 UTCJul 1, 22:30 UTC10m
2026-07-01 YZR7579 - Jul 1, 05:55 UTCJul 1, 09:10 UTC3h 15m
2026-06-30 YZR7536 - Jun 30, 15:25 UTCJun 30, 15:35 UTC10m
2026-06-30 YZR7535 - Jun 30, 10:35 UTCJun 30, 10:45 UTC10m
2026-06-29 YZR7544 - Jun 29, 12:29 UTCJun 29, 12:39 UTC10m
2026-06-28 YZR7543 - Jun 28, 23:50 UTCJun 29, 08:29 UTC8h 40m
2026-06-28 YZR7543 - Jun 28, 08:05 UTCJun 28, 23:50 UTC15h 45m
2026-06-27 YZR7586 - Jun 27, 09:50 UTCJun 27, 10:05 UTC15m
2026-06-26 YZR7501 - Jun 26, 09:14 UTCJun 26, 13:04 UTC3h 50m
2026-06-24 YZR7565 - Jun 24, 23:45 UTCJun 24, 23:59 UTC15m
2026-06-24 YZR7532 - Jun 24, 14:39 UTCJun 24, 15:05 UTC25m
2026-06-24 YZR7532 - Jun 24, 09:34 UTCJun 24, 10:19 UTC45m
2026-06-24 YZR7531 - Jun 24, 01:44 UTCJun 24, 01:55 UTC10m
2026-06-22 YZR7526 - Jun 22, 17:44 UTCJun 22, 17:55 UTC10m
2026-06-21 YZR7525 - Jun 21, 22:34 UTCJun 21, 22:44 UTC10m
2026-06-21 - - Jun 21, 17:24 UTCJun 21, 17:35 UTC10m
2026-06-20 YZR7525 - Jun 20, 22:39 UTCJun 20, 22:54 UTC15m

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-5692 page for operator, model, and routing details .

Mode-S 78091E frequently asked

What is Mode-S code 78091E?
78091E is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5692.
Where is Mode-S 78091E registered?
Mode-S code 78091E is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78091E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 07:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78091E, octal 36004436, decimal 7,866,654.
What flights does 78091E operate?
Mode-S 78091E has broadcast 20 distinct callsigns, including YZR7579, YZR7525, YZR7565, YZR7537, YZR7526.