Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7816DE

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-20AY · BOEING 737 MAX 8

Hex
7816DE
Octal
36013336
Decimal
7,870,174
Country
CN
Tail
B-20AY
Type
B38M
No current signal · last broadcast Jul 25, 06:55 UTC
Flights observed
133
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 06:55 UTC

Last known position

Most recent position reported by Mode-S 7816DE.

Country allocation

The ICAO 24-bit address 7816DE 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
CSH866 - 10 2026-07-05
CSH865 - 7 2026-07-04
CSH863 - 7 2026-07-04
CSH831 - 7 2026-07-21
CSH812 Shanghai Airlines 7 2026-07-24
CSH811 Shanghai Airlines 7 2026-07-24
CSH9539 Shanghai Airlines 6 2026-06-09
CSH858 Shanghai Airlines 6 2026-05-22
CSH862 - 5 2026-07-10
CSH861 - 5 2026-07-10
CSH857 - 5 2026-07-05
CSH854 Shanghai Airlines 5 2026-07-25
CSH853 Shanghai Airlines 4 2026-07-24
CSH848 Shanghai Airlines 4 2026-05-01
CSH847 Shanghai Airlines 4 2026-05-01
CSH832 Shanghai Airlines 4 2026-06-13
CSH868 Shanghai Airlines 3 2026-05-28
CSH867 Shanghai Airlines 3 2026-05-28
CSH843 Shanghai Airlines 3 2026-07-09
CSH841 - 3 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CSH854 BKK → PVG Jul 25, 05:15 UTCJul 25, 06:55 UTC1h 40m
2026-07-24 CSH853 PVG → BKK Jul 24, 16:00 UTCJul 24, 17:30 UTC1h 30m
2026-07-24 CSH812 HKG → PVG Jul 24, 06:25 UTCJul 24, 07:50 UTC1h 25m
2026-07-24 CSH811 PVG → HKG Jul 24, 03:05 UTCJul 24, 04:25 UTC1h 20m
2026-07-23 CSH812 HKG → PVG Jul 23, 06:15 UTCJul 24, 04:25 UTC22h 10m
2026-07-22 CSH811 PVG → HKG Jul 22, 17:55 UTCJul 23, 04:15 UTC10h 20m
2026-07-21 CSH7265 PVG → KUL Jul 21, 22:05 UTCJul 22, 16:30 UTC18h 25m
2026-07-21 CSH7265 PVG → KUL Jul 21, 19:35 UTCJul 22, 16:30 UTC20h 55m
2026-07-21 CSH7265 PVG → KUL Jul 21, 17:35 UTCJul 22, 16:30 UTC22h 55m
2026-07-21 CSH831 - Jul 21, 16:00 UTCJul 22, 13:25 UTC21h 25m
2026-07-17 CSH854 - Jul 17, 07:20 UTCJul 17, 07:35 UTC15m
2026-07-17 CSH854 - Jul 17, 05:10 UTCJul 17, 05:25 UTC15m
2026-07-16 CSH853 - Jul 16, 14:25 UTCJul 16, 14:45 UTC20m
2026-07-16 CSH812 - Jul 16, 06:30 UTCJul 16, 12:34 UTC6h 5m
2026-07-16 CSH811 - Jul 16, 03:15 UTCJul 16, 04:30 UTC1h 15m
2026-07-15 CSH811 - Jul 15, 08:35 UTCJul 16, 04:30 UTC19h 55m
2026-07-14 CSH814 - Jul 14, 20:00 UTCJul 14, 23:40 UTC3h 39m
2026-07-14 CSH813 - Jul 14, 12:45 UTCJul 14, 16:50 UTC4h 5m
2026-07-13 CSH7222 - Jul 13, 06:25 UTCJul 13, 11:15 UTC4h 50m
2026-07-12 CSH7221 - Jul 12, 16:45 UTCJul 13, 04:55 UTC12h 10m
2026-07-12 CSH7223 - Jul 12, 01:20 UTCJul 12, 15:25 UTC14h 5m
2026-07-10 CSH862 - Jul 10, 18:00 UTCJul 11, 11:35 UTC17h 35m
2026-07-10 CSH861 - Jul 10, 15:50 UTCJul 10, 16:10 UTC20m
2026-07-09 CSH844 SIN → PVG Jul 9, 19:45 UTCJul 10, 12:45 UTC17h 0m
2026-07-09 CSH843 PVG → SIN Jul 9, 14:25 UTCJul 9, 18:30 UTC4h 5m
2026-07-07 CSH812 - Jul 7, 06:20 UTCJul 7, 07:30 UTC1h 10m
2026-07-06 CSH811 - Jul 6, 13:10 UTCJul 7, 04:10 UTC15h 0m
2026-07-05 CSH857 - Jul 5, 16:15 UTCJul 6, 15:30 UTC23h 15m
2026-07-05 CSH866 - Jul 5, 13:00 UTCJul 5, 17:10 UTC4h 10m
2026-07-04 CSH865 - Jul 4, 23:40 UTCJul 5, 11:30 UTC11h 50m
2026-07-04 CSH863 - Jul 4, 18:10 UTCJul 4, 22:20 UTC4h 10m
2026-07-03 CSH812 - Jul 3, 08:00 UTCJul 3, 08:55 UTC55m
2026-07-02 CSH811 - Jul 2, 19:50 UTCJul 3, 05:20 UTC9h 30m
2026-07-02 CSH843 PVG → SIN Jul 2, 05:00 UTCJul 2, 18:10 UTC13h 10m
2026-07-01 CSH841 - Jul 1, 10:45 UTCJul 1, 16:55 UTC6h 10m
2026-06-30 CSH9136 - Jun 30, 12:50 UTCJul 1, 11:15 UTC22h 25m
2026-06-30 CSH9136 - Jun 30, 04:25 UTCJun 30, 13:15 UTC8h 50m
2026-06-24 CSH9068 CGQ → PVG Jun 24, 13:34 UTCJun 24, 14:09 UTC35m
2026-06-18 CSH864 - Jun 18, 23:05 UTCJun 19, 03:05 UTC3h 59m
2026-06-18 CSH863 - Jun 18, 02:55 UTCJun 18, 21:30 UTC18h 35m
2026-06-17 CSH853 HKG → BKK Jun 17, 06:40 UTCJun 17, 14:40 UTC8h 0m
2026-06-16 CSH811 - Jun 16, 19:50 UTCJun 17, 04:30 UTC8h 40m
2026-06-16 CSH843 PVG → SIN Jun 16, 14:00 UTCJun 16, 17:49 UTC3h 50m
2026-06-13 CSH832 HKT → PVG Jun 13, 14:15 UTCJun 14, 08:50 UTC18h 35m
2026-06-13 CSH832 HKT → PVG Jun 13, 13:10 UTCJun 14, 08:50 UTC19h 40m
2026-06-13 CSH832 HKT → PVG Jun 13, 03:25 UTCJun 13, 20:15 UTC16h 49m
2026-06-12 CSH831 - Jun 12, 15:40 UTCJun 13, 15:05 UTC23h 24m
2026-06-12 CSH866 KUL → PVG Jun 12, 12:30 UTCJun 13, 03:40 UTC15h 10m
2026-06-11 CSH865 PVG → KUL Jun 11, 23:15 UTCJun 12, 11:05 UTC11h 51m
2026-06-11 CSH863 PVG → KUL Jun 11, 12:55 UTCJun 11, 21:35 UTC8h 40m

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-20AY page for operator, model, and routing details .

Mode-S 7816DE frequently asked

What is Mode-S code 7816DE?
7816DE is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-20AY.
Where is Mode-S 7816DE registered?
Mode-S code 7816DE is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7816DE broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 06:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7816DE, octal 36013336, decimal 7,870,174.
What flights does 7816DE operate?
Mode-S 7816DE has broadcast 20 distinct callsigns, including CSH866, CSH865, CSH863, CSH831, CSH812.