Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

780EFA

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-7171 · BOEING 737-800

Hex
780EFA
Octal
36007372
Decimal
7,868,154
Country
CN
Tail
B-7171
Type
B738
No current signal · last broadcast 52m ago
Flights observed
60
Distinct callsigns
20
Country
CN
Last broadcast
52m ago

Last known position

Most recent position reported by Mode-S 780EFA.

Country allocation

The ICAO 24-bit address 780EFA 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
CHH7746 - 3 2026-05-30
CHH7741 Hainan Airlines 3 2026-05-28
CHH7988 Hainan Airlines 2 2026-05-20
CHH7987 Hainan Airlines 2 2026-05-20
CHH7742 Hainan Airlines 2 2026-05-18
CHH7731 Hainan Airlines 2 2026-06-02
CHH7722 Hainan Airlines 2 2026-05-31
CHH7394 Hainan Airlines 2 2026-06-01
CHH7075 Hainan Airlines 2 2026-05-14
CHH7028 Hainan Airlines 2 2026-05-08
CHH460 Hainan Airlines 2 2026-05-25
CHH459 Hainan Airlines 2 2026-05-25
CHH439 Hainan Airlines 2 2026-05-07
CHH7874 Hainan Airlines 1 2026-06-01
CHH7750 Hainan Airlines 1 2026-06-03
CHH7745 - 1 2026-05-30
CHH7743 Hainan Airlines 1 2026-04-22
CHH7734 Hainan Airlines 1 2026-04-22
CHH7733 Hainan Airlines 1 2026-04-22
CHH7729 Hainan Airlines 1 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-05 CHH7132 SHA → CAN Jun 5, 00:55 UTCJun 5, 05:45 UTC4h 50m
2026-06-03 CHH7750 SZX → SYX Jun 3, 15:10 UTCJun 3, 15:25 UTC15m
2026-06-02 CHH7731 SYX → SZX Jun 2, 23:40 UTCJun 2, 23:50 UTC10m
2026-06-02 CHH7729 SZX → SHE Jun 2, 05:50 UTCJun 2, 06:00 UTC10m
2026-06-01 CHH7874 SZX → XIY Jun 1, 09:05 UTCJun 1, 09:15 UTC10m
2026-06-01 CHH7394 HGH → SZX Jun 1, 06:50 UTCJun 1, 07:15 UTC25m
2026-05-31 CHH6206 PVG → SZX May 31, 15:15 UTCMay 31, 15:40 UTC25m
2026-05-31 CHH6205 SZX → PVG May 31, 09:55 UTCMay 31, 10:05 UTC10m
2026-05-31 CHH7722 PVG → SZX May 31, 08:25 UTCMay 31, 08:35 UTC10m
2026-05-30 CHH7746 - May 30, 08:40 UTCMay 30, 09:05 UTC25m
2026-05-30 CHH7745 - May 30, 02:15 UTCMay 30, 02:25 UTC10m
2026-05-29 CHH7027 HAK → SZX May 29, 18:05 UTCMay 29, 18:25 UTC20m
2026-05-29 CHH7582 PEK → HAK May 29, 08:20 UTCMay 29, 11:15 UTC2h 55m
2026-05-28 CHH7741 SZX → KWE May 28, 04:10 UTCMay 28, 04:20 UTC10m
2026-05-25 CHH460 SIN → HAK May 25, 08:30 UTCMay 25, 08:45 UTC15m
2026-05-25 CHH459 HAK → SIN May 25, 06:20 UTCMay 25, 06:40 UTC20m
2026-05-24 CHH460 SIN → HAK May 24, 09:10 UTCMay 25, 06:40 UTC21h 30m
2026-05-24 CHH459 HAK → SIN May 24, 06:25 UTCMay 24, 06:35 UTC10m
2026-05-21 CHH7103 PEK → DLC May 21, 16:10 UTCMay 21, 16:20 UTC10m
2026-05-20 CHH7988 TPE → PEK May 20, 07:45 UTCMay 20, 07:55 UTC10m
2026-05-20 CHH7988 TPE → PEK May 20, 05:10 UTCMay 20, 05:30 UTC20m
2026-05-20 CHH7987 PEK → TPE May 20, 02:20 UTCMay 20, 02:35 UTC15m
2026-05-19 CHH7987 PEK → TPE May 19, 23:55 UTCMay 20, 00:05 UTC10m
2026-05-19 CHH7164 NKG → SZX May 19, 00:00 UTCMay 19, 08:45 UTC8h 45m
2026-05-18 CHH7741 SZX → KWE May 18, 03:50 UTCMay 18, 04:00 UTC10m
2026-05-18 CHH7742 KWE → SZX May 18, 02:15 UTCMay 18, 02:35 UTC20m
2026-05-17 CHH7741 SZX → KWE May 17, 03:55 UTCMay 17, 04:05 UTC10m
2026-05-17 CHH7742 KWE → SZX May 17, 02:05 UTCMay 17, 02:20 UTC15m
2026-05-14 CHH7075 HAK → KHN May 14, 00:50 UTCMay 14, 04:15 UTC3h 25m
2026-05-13 CHH7006 CAN → HAK May 13, 01:35 UTCMay 13, 01:45 UTC10m
2026-05-08 CHH7028 SZX → HAK May 8, 15:15 UTCMay 8, 15:25 UTC10m
2026-05-08 CHH7746 - May 8, 08:40 UTCMay 8, 08:59 UTC20m
2026-05-08 CHH7731 SYX → SZX May 8, 02:09 UTCMay 8, 02:19 UTC10m
2026-05-08 CHH7558 CKG → SZX May 8, 00:29 UTCMay 8, 00:40 UTC10m
2026-05-07 CHH7557 SZX → CKG May 7, 15:10 UTCMay 7, 15:25 UTC15m
2026-05-07 - - May 7, 13:25 UTCMay 7, 13:35 UTC10m
2026-05-07 CHH7711 PEK → SZX May 7, 10:50 UTCMay 7, 11:05 UTC15m
2026-05-07 CHH440 NRT → PEK May 7, 05:10 UTCMay 7, 07:10 UTC2h 0m
2026-05-07 CHH439 PEK → NRT May 7, 00:30 UTCMay 7, 02:30 UTC2h 0m
2026-05-06 CHH439 PEK → NRT May 6, 23:35 UTCMay 6, 23:45 UTC10m
2026-05-06 CHH7607 PEK → SHA May 6, 09:05 UTCMay 6, 09:20 UTC15m
2026-05-06 CHH7198 LHW → PEK May 6, 03:35 UTCMay 6, 03:55 UTC20m
2026-05-05 CHH7197 PEK → LHW May 5, 22:50 UTCMay 5, 23:20 UTC30m
2026-05-05 CHH7506 CGO → HRB May 5, 11:15 UTCMay 5, 11:30 UTC15m
2026-05-05 CHH7505 HRB → CGO May 5, 00:50 UTCMay 5, 01:00 UTC10m
2026-05-04 CHH7559 XIY → HRB May 4, 02:25 UTCMay 4, 02:45 UTC20m
2026-04-26 CHH7028 SZX → HAK Apr 26, 15:15 UTCApr 26, 15:30 UTC15m
2026-04-26 CHH7746 - Apr 26, 08:45 UTCApr 26, 09:10 UTC25m
2026-04-22 CHH7743 NGB → CGQ Apr 22, 23:05 UTCApr 22, 23:15 UTC10m
2026-04-22 CHH7734 CGO → SZX Apr 22, 16:45 UTCApr 22, 17:00 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-7171 page for operator, model, and routing details .

Mode-S 780EFA frequently asked

What is Mode-S code 780EFA?
780EFA is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-7171.
Where is Mode-S 780EFA registered?
Mode-S code 780EFA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780EFA broadcasting right now?
No active broadcast right now. Last signal was 52m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780EFA, octal 36007372, decimal 7,868,154.
What flights does 780EFA operate?
Mode-S 780EFA has broadcast 20 distinct callsigns, including CHH7746, CHH7741, CHH7988, CHH7987, CHH7742.