Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7808DF

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5685 · BOEING 737-800

Hex
7808DF
Octal
36004337
Decimal
7,866,591
Country
CN
Tail
B-5685
Type
B738
No current signal · last broadcast 1d ago
Flights observed
54
Distinct callsigns
14
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7808DF.

Country allocation

The ICAO 24-bit address 7808DF 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 14 distinct

Callsign Airline Flights Last seen
YZR7532 Yangtze River Express 13 2026-05-30
YZR7531 Yangtze River Express 10 2026-05-29
YZR7501 Yangtze River Express 9 2026-05-26
YZR7528 - 4 2026-04-20
YZR7527 Yangtze River Express 4 2026-06-01
YZR7596 Yangtze River Express 3 2026-05-27
YZR7586 - 2 2026-04-30
YZR7580 Yangtze River Express 2 2026-06-01
YZR7537 Yangtze River Express 2 2026-05-31
YZR7579 Yangtze River Express 1 2026-06-01
YZR7566 Yangtze River Express 1 2026-05-28
YZR7565 Yangtze River Express 1 2026-05-17
YZR7536 - 1 2026-05-02
YZR7533 Yangtze River Express 1 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 YZR7527 SZX → HET Jun 1, 23:45 UTCJun 1, 23:55 UTC10m
2026-06-01 YZR7580 ZUH → PVG Jun 1, 08:50 UTCJun 1, 09:00 UTC10m
2026-06-01 YZR7579 PVG → ZUH Jun 1, 06:00 UTCJun 1, 06:15 UTC15m
2026-05-31 YZR7537 SZX → KWE May 31, 22:45 UTCMay 31, 22:55 UTC10m
2026-05-31 YZR7580 ZUH → PVG May 31, 08:45 UTCMay 31, 08:55 UTC10m
2026-05-30 YZR7537 SZX → KWE May 30, 23:00 UTCMay 30, 23:10 UTC10m
2026-05-30 YZR7532 HGH → SZX May 30, 14:40 UTCMay 30, 15:00 UTC20m
2026-05-29 YZR7532 HGH → SZX May 29, 16:45 UTCMay 29, 17:40 UTC55m
2026-05-29 YZR7531 SZX → HGH May 29, 01:40 UTCMay 29, 01:50 UTC10m
2026-05-28 YZR7566 PVG → SZX May 28, 07:05 UTCMay 28, 07:25 UTC20m
2026-05-27 YZR7596 HAK → PVG May 27, 12:15 UTCMay 27, 12:25 UTC10m
2026-05-26 YZR7501 PVG → SYX May 26, 09:29 UTCMay 26, 12:54 UTC3h 25m
2026-05-25 YZR7501 PVG → SYX May 25, 09:30 UTCMay 25, 15:25 UTC5h 55m
2026-05-23 YZR7501 PVG → SYX May 23, 09:20 UTCMay 23, 13:00 UTC3h 40m
2026-05-21 YZR7501 PVG → SYX May 21, 09:25 UTCMay 21, 13:40 UTC4h 15m
2026-05-21 YZR7596 HAK → PVG May 21, 04:10 UTCMay 21, 04:20 UTC10m
2026-05-19 YZR7596 HAK → PVG May 19, 04:30 UTCMay 19, 04:40 UTC10m
2026-05-17 YZR7565 SZX → PVG May 17, 23:00 UTCMay 17, 23:10 UTC10m
2026-05-16 YZR7531 SZX → HGH May 16, 01:10 UTCMay 16, 01:20 UTC10m
2026-05-14 YZR7532 HGH → SZX May 14, 16:10 UTCMay 14, 16:35 UTC25m
2026-05-14 YZR7532 HGH → SZX May 14, 09:30 UTCMay 14, 09:50 UTC20m
2026-05-14 YZR7531 SZX → HGH May 14, 01:05 UTCMay 14, 01:15 UTC10m
2026-05-13 YZR7532 HGH → SZX May 13, 15:00 UTCMay 13, 15:25 UTC25m
2026-05-13 YZR7531 SZX → HGH May 13, 01:40 UTCMay 13, 01:50 UTC10m
2026-05-12 YZR7532 HGH → SZX May 12, 14:40 UTCMay 12, 15:01 UTC20m
2026-05-12 YZR7532 HGH → SZX May 12, 09:30 UTCMay 12, 10:00 UTC30m
2026-05-11 YZR7531 SZX → HGH May 11, 01:34 UTCMay 11, 01:45 UTC10m
2026-05-10 YZR7531 SZX → HGH May 10, 01:39 UTCMay 10, 01:50 UTC10m
2026-05-09 YZR7532 HGH → SZX May 9, 14:40 UTCMay 9, 15:05 UTC25m
2026-05-09 YZR7532 HGH → SZX May 9, 09:30 UTCMay 9, 10:05 UTC35m
2026-05-09 YZR7531 SZX → HGH May 9, 01:10 UTCMay 9, 01:20 UTC10m
2026-05-08 YZR7532 HGH → SZX May 8, 15:25 UTCMay 8, 15:35 UTC10m
2026-05-08 YZR7531 SZX → HGH May 8, 02:29 UTCMay 8, 02:44 UTC15m
2026-05-07 YZR7532 HGH → SZX May 7, 09:25 UTCMay 7, 10:05 UTC40m
2026-05-07 YZR7531 SZX → HGH May 7, 01:10 UTCMay 7, 01:20 UTC10m
2026-05-05 YZR7527 SZX → HET May 5, 00:05 UTCMay 5, 00:15 UTC10m
2026-05-04 YZR7532 HGH → SZX May 4, 10:00 UTCMay 4, 10:35 UTC35m
2026-05-02 YZR7527 SZX → HET May 2, 23:05 UTCMay 2, 23:15 UTC10m
2026-05-02 YZR7536 - May 2, 13:55 UTCMay 2, 14:15 UTC20m
2026-05-01 YZR7533 XIY → CGQ May 1, 06:20 UTCMay 1, 06:40 UTC20m
2026-04-30 YZR7586 - Apr 30, 09:00 UTCApr 30, 09:10 UTC10m
2026-04-29 YZR7501 PVG → SYX Apr 29, 10:40 UTCApr 29, 10:55 UTC15m
2026-04-27 YZR7501 PVG → SYX Apr 27, 08:25 UTCApr 27, 13:05 UTC4h 40m
2026-04-26 YZR7501 PVG → SYX Apr 26, 09:25 UTCApr 26, 09:45 UTC20m
2026-04-24 YZR7501 PVG → SYX Apr 24, 09:55 UTCApr 24, 13:30 UTC3h 35m
2026-04-23 YZR7586 - Apr 23, 13:35 UTCApr 23, 13:45 UTC10m
2026-04-22 YZR7501 PVG → SYX Apr 22, 08:40 UTCApr 22, 15:35 UTC6h 55m
2026-04-20 YZR7528 - Apr 20, 14:30 UTCApr 20, 14:40 UTC10m
2026-04-19 YZR7528 - Apr 19, 14:35 UTCApr 19, 14:55 UTC20m
2026-04-18 YZR7528 - Apr 18, 14:25 UTCApr 18, 14:35 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-5685 page for operator, model, and routing details .

Mode-S 7808DF frequently asked

What is Mode-S code 7808DF?
7808DF is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5685.
Where is Mode-S 7808DF registered?
Mode-S code 7808DF is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7808DF broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7808DF, octal 36004337, decimal 7,866,591.
What flights does 7808DF operate?
Mode-S 7808DF has broadcast 14 distinct callsigns, including YZR7532, YZR7531, YZR7501, YZR7528, YZR7527.