Apparatus

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sensors Mode-S transponder

7800DA

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5373 · BOEING 737-800

Hex
7800DA
Octal
36000332
Decimal
7,864,538
Country
CN
Tail
B-5373
Type
B738
No current signal · last broadcast 2h ago
Flights observed
122
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 7800DA.

Country allocation

The ICAO 24-bit address 7800DA 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
CHH748 - 5 2026-06-26
CHH7322 Hainan Airlines 5 2026-05-11
CHH7505 - 4 2026-06-30
CHH747 - 4 2026-06-26
CHH7735 Hainan Airlines 3 2026-06-11
CHH7506 - 3 2026-06-29
CHH6394 - 3 2026-07-09
CHH7746 - 2 2026-07-14
CHH7745 - 2 2026-07-10
CHH7715 Hainan Airlines 2 2026-06-11
CHH7708 Hainan Airlines 2 2026-06-07
CHH7688 - 2 2026-07-03
CHH7654 - 2 2026-07-04
CHH7644 Hainan Airlines 2 2026-06-05
CHH7394 Hainan Airlines 2 2026-04-14
CHH7392 Hainan Airlines 2 2026-06-13
CHH7320 - 2 2026-06-20
CHH7275 Hainan Airlines 2 2026-06-12
CHH7255 - 2 2026-07-05
CHH7216 Hainan Airlines 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CHH7746 - Jul 14, 09:10 UTCJul 14, 09:30 UTC20m
2026-07-10 CHH7746 - Jul 10, 09:20 UTCJul 10, 09:40 UTC20m
2026-07-10 CHH7745 - Jul 10, 06:50 UTCJul 10, 07:20 UTC30m
2026-07-10 CHH7745 - Jul 10, 02:50 UTCJul 10, 03:00 UTC10m
2026-07-10 CHH7558 - Jul 10, 00:45 UTCJul 10, 01:00 UTC15m
2026-07-09 CHH6394 - Jul 9, 15:30 UTCJul 9, 15:40 UTC10m
2026-07-08 CHH7361 - Jul 8, 12:45 UTCJul 8, 12:55 UTC10m
2026-07-07 CHH7668 - Jul 7, 05:45 UTCJul 7, 13:00 UTC7h 15m
2026-07-06 CHH7750 - Jul 6, 15:40 UTCJul 6, 15:55 UTC15m
2026-07-05 CHH7765 - Jul 5, 23:35 UTCJul 5, 23:45 UTC10m
2026-07-05 CHH7256 - Jul 5, 16:50 UTCJul 5, 17:00 UTC10m
2026-07-05 CHH7255 - Jul 5, 11:50 UTCJul 5, 12:00 UTC10m
2026-07-05 CHH7722 - Jul 5, 09:05 UTCJul 5, 09:15 UTC10m
2026-07-04 CHH7654 - Jul 4, 16:55 UTCJul 4, 17:15 UTC20m
2026-07-03 CHH7653 - Jul 3, 23:25 UTCJul 4, 12:55 UTC13h 30m
2026-07-03 CHH7688 - Jul 3, 10:35 UTCJul 3, 23:30 UTC12h 55m
2026-07-03 CHH7688 - Jul 3, 00:00 UTCJul 3, 10:55 UTC10h 55m
2026-07-02 CHH7654 - Jul 2, 02:25 UTCJul 2, 16:35 UTC14h 10m
2026-07-01 CHH7319 - Jul 1, 12:35 UTCJul 2, 09:45 UTC21h 10m
2026-07-01 CHH7164 - Jul 1, 05:05 UTCJul 2, 02:40 UTC21h 35m
2026-07-01 CHH7291 - Jul 1, 00:15 UTCJul 1, 00:25 UTC10m
2026-06-30 CHH7505 - Jun 30, 00:45 UTCJun 30, 00:55 UTC10m
2026-06-29 CHH7506 - Jun 29, 11:50 UTCJun 29, 12:05 UTC15m
2026-06-29 CHH7505 - Jun 29, 01:05 UTCJun 29, 01:14 UTC10m
2026-06-28 CHH7506 - Jun 28, 12:09 UTCJun 28, 12:19 UTC10m
2026-06-28 CHH7505 - Jun 28, 00:59 UTCJun 28, 01:10 UTC10m
2026-06-27 CHH7506 - Jun 27, 12:39 UTCJun 27, 12:50 UTC10m
2026-06-27 CHH7505 - Jun 27, 00:55 UTCJun 27, 01:04 UTC10m
2026-06-26 CHH7067 - Jun 26, 14:05 UTCJun 26, 14:25 UTC20m
2026-06-26 CHH748 - Jun 26, 04:14 UTCJun 26, 06:54 UTC2h 40m
2026-06-26 CHH747 - Jun 26, 02:09 UTCJun 26, 02:30 UTC20m
2026-06-25 CHH784 HAN → HAK Jun 25, 14:44 UTCJun 25, 15:20 UTC35m
2026-06-25 CHH783 HAK → HAN Jun 25, 11:54 UTCJun 25, 12:40 UTC45m
2026-06-25 CHH7016 - Jun 25, 08:40 UTCJun 25, 08:55 UTC15m
2026-06-24 CHH748 - Jun 24, 04:05 UTCJun 24, 11:45 UTC7h 40m
2026-06-24 CHH747 - Jun 24, 02:20 UTCJun 24, 02:34 UTC15m
2026-06-23 CHH7097 - Jun 23, 08:20 UTCJun 23, 13:59 UTC5h 40m
2026-06-22 CHH780 HKG → HAK Jun 22, 12:54 UTCJun 22, 13:10 UTC15m
2026-06-22 CHH779 - Jun 22, 11:00 UTCJun 22, 11:19 UTC20m
2026-06-22 CHH748 - Jun 22, 04:19 UTCJun 22, 04:44 UTC25m
2026-06-22 CHH747 - Jun 22, 02:14 UTCJun 22, 02:34 UTC20m
2026-06-21 CHH7050 - Jun 21, 04:44 UTCJun 21, 15:30 UTC10h 45m
2026-06-20 CHH7320 - Jun 20, 04:34 UTCJun 21, 02:20 UTC21h 45m
2026-06-20 CHH748 - Jun 20, 04:09 UTCJun 21, 02:20 UTC22h 10m
2026-06-19 CHH7120 - Jun 19, 11:20 UTCJun 19, 23:59 UTC12h 40m
2026-06-16 CHH7488 CGQ → HGH Jun 16, 12:35 UTCJun 17, 03:10 UTC14h 36m
2026-06-15 CHH7395 - Jun 15, 11:00 UTCJun 15, 11:10 UTC10m
2026-06-14 CHH7751 SZX → CTU Jun 14, 22:25 UTCJun 14, 22:35 UTC10m
2026-06-14 CHH7630 XNT → HAK Jun 14, 05:40 UTCJun 14, 05:55 UTC15m
2026-06-14 CHH7629 - Jun 14, 03:50 UTCJun 14, 04:05 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-5373 page for operator, model, and routing details .

Mode-S 7800DA frequently asked

What is Mode-S code 7800DA?
7800DA is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5373.
Where is Mode-S 7800DA registered?
Mode-S code 7800DA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7800DA broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7800DA, octal 36000332, decimal 7,864,538.
What flights does 7800DA operate?
Mode-S 7800DA has broadcast 20 distinct callsigns, including CHH748, CHH7322, CHH7505, CHH747, CHH7735.