Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C716

ICAO 24-bit transponder address · allocated to Korea, South

Currently assigned to HL8716 · BOEING 737 MAX 8

Hex
71C716
Octal
34343426
Decimal
7,456,534
Country
KR
Tail
HL8716
Type
B38M
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
463
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S 71C716.

Country allocation

The ICAO 24-bit address 71C716 falls within the block assigned to Korea, South (KR) by ICAO Annex 10, Volume III. Every aircraft registered in Korea, South 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
ESR915 Eastar Jet 34 2026-07-22
ESR968 Eastar Jet 32 2026-07-26
ESR967 Eastar Jet 32 2026-07-26
ESR916 - 31 2026-07-17
ESR981 Eastar Jet 27 2026-07-26
ESR982 Eastar Jet 16 2026-07-26
ESR941 Eastar Jet 15 2026-07-22
ESR936 Eastar Jet 14 2026-07-20
ESR984 - 13 2026-07-21
ESR942 Eastar Jet 13 2026-07-22
ESR284 Eastar Jet 12 2026-07-23
ESR283 Eastar Jet 11 2026-07-23
ESR230 Eastar Jet 11 2026-07-23
ESR219 Eastar Jet 11 2026-07-23
ESR212 Eastar Jet 11 2026-07-23
ESR206 Eastar Jet 11 2026-07-23
ESR988 - 10 2026-07-14
ESR983 Eastar Jet 10 2026-07-21
ESR211 Eastar Jet 10 2026-07-23
ESR987 - 8 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ESR982 PQC → PUS Jul 26, 21:15 UTCJul 26, 21:30 UTC15m
2026-07-26 ESR981 PUS → PQC Jul 26, 11:45 UTCJul 26, 20:10 UTC8h 25m
2026-07-26 ESR981 PUS → PQC Jul 26, 10:25 UTCJul 26, 10:40 UTC15m
2026-07-26 ESR968 KMJ → PUS Jul 26, 06:10 UTCJul 26, 06:55 UTC46m
2026-07-26 ESR967 PUS → KMJ Jul 26, 03:50 UTCJul 26, 04:20 UTC30m
2026-07-26 ESR902 CJU → PUS Jul 26, 01:20 UTCJul 26, 01:40 UTC20m
2026-07-25 ESR711 CJJ → CJU Jul 25, 22:50 UTCJul 25, 23:20 UTC30m
2026-07-25 ESR821 CJJ → PVG Jul 25, 15:00 UTCJul 25, 21:20 UTC6h 20m
2026-07-25 ESR716 CJU → CJJ Jul 25, 13:00 UTCJul 25, 13:30 UTC30m
2026-07-25 ESR233 GMP → CJU Jul 25, 10:45 UTCJul 25, 11:20 UTC35m
2026-07-25 ESR224 CJU → GMP Jul 25, 09:05 UTCJul 25, 09:50 UTC45m
2026-07-25 ESR223 GMP → CJU Jul 25, 07:05 UTCJul 25, 07:35 UTC30m
2026-07-25 ESR216 CJU → GMP Jul 25, 05:15 UTCJul 25, 06:00 UTC45m
2026-07-25 ESR213 GMP → CJU Jul 25, 03:00 UTCJul 25, 03:30 UTC30m
2026-07-25 ESR208 CJU → GMP Jul 25, 01:10 UTCJul 25, 01:50 UTC40m
2026-07-24 ESR207 GMP → CJU Jul 24, 22:50 UTCJul 24, 23:25 UTC35m
2026-07-24 ESR232 CJU → GMP Jul 24, 13:15 UTCJul 24, 13:50 UTC35m
2026-07-24 ESR231 GMP → CJU Jul 24, 10:40 UTCJul 24, 11:15 UTC35m
2026-07-24 ESR276 CJU → GMP Jul 24, 08:50 UTCJul 24, 09:35 UTC45m
2026-07-24 ESR275 GMP → CJU Jul 24, 06:45 UTCJul 24, 07:20 UTC35m
2026-07-24 ESR274 CJU → GMP Jul 24, 04:55 UTCJul 24, 05:35 UTC40m
2026-07-24 ESR273 GMP → CJU Jul 24, 02:45 UTCJul 24, 03:20 UTC35m
2026-07-24 ESR204 CJU → GMP Jul 24, 00:25 UTCJul 24, 01:05 UTC40m
2026-07-23 ESR205 GMP → CJU Jul 23, 22:00 UTCJul 23, 22:35 UTC35m
2026-07-23 ESR230 CJU → GMP Jul 23, 12:35 UTCJul 23, 13:15 UTC40m
2026-07-23 ESR283 GMP → CJU Jul 23, 10:25 UTCJul 23, 11:00 UTC35m
2026-07-23 ESR284 CJU → GMP Jul 23, 08:40 UTCJul 23, 09:25 UTC45m
2026-07-23 ESR219 GMP → CJU Jul 23, 06:10 UTCJul 23, 06:45 UTC35m
2026-07-23 ESR212 CJU → GMP Jul 23, 04:20 UTCJul 23, 05:00 UTC40m
2026-07-23 ESR211 GMP → CJU Jul 23, 02:20 UTCJul 23, 02:55 UTC35m
2026-07-23 ESR206 CJU → GMP Jul 23, 00:20 UTCJul 23, 01:00 UTC40m
2026-07-22 ESR901 PUS → CJU Jul 22, 22:10 UTCJul 22, 22:25 UTC15m
2026-07-22 ESR915 PUS → KIX Jul 22, 04:40 UTCJul 22, 05:25 UTC45m
2026-07-22 ESR942 FUK → PUS Jul 22, 02:05 UTCJul 22, 02:40 UTC35m
2026-07-22 ESR941 PUS → FUK Jul 22, 00:05 UTCJul 22, 00:25 UTC20m
2026-07-21 ESR984 - Jul 21, 18:50 UTCJul 21, 21:15 UTC2h 25m
2026-07-21 ESR983 PUS → TPE Jul 21, 15:10 UTCJul 21, 15:25 UTC15m
2026-07-21 ESR983 PUS → TPE Jul 21, 13:35 UTCJul 21, 13:55 UTC20m
2026-07-21 ESR968 KMJ → PUS Jul 21, 05:55 UTCJul 21, 06:35 UTC40m
2026-07-21 ESR967 PUS → KMJ Jul 21, 03:45 UTCJul 21, 04:20 UTC35m
2026-07-20 ESR936 ALA → PUS Jul 20, 10:20 UTCJul 21, 00:50 UTC14h 30m
2026-07-20 ESR968 KMJ → PUS Jul 20, 06:00 UTCJul 20, 06:40 UTC40m
2026-07-20 ESR967 - Jul 20, 03:50 UTCJul 20, 04:25 UTC35m
2026-07-20 ESR902 - Jul 20, 01:50 UTCJul 20, 02:05 UTC15m
2026-07-19 ESR271 GMP → CJU Jul 19, 23:00 UTCJul 19, 23:35 UTC35m
2026-07-19 ESR230 CJU → GMP Jul 19, 11:50 UTCJul 19, 12:20 UTC30m
2026-07-19 ESR283 - Jul 19, 09:45 UTCJul 19, 10:20 UTC35m
2026-07-19 ESR284 - Jul 19, 08:00 UTCJul 19, 08:35 UTC35m
2026-07-19 ESR219 - Jul 19, 05:55 UTCJul 19, 06:25 UTC30m
2026-07-19 ESR212 CJU → GMP Jul 19, 04:10 UTCJul 19, 04:45 UTC35m

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 HL8716 page for operator, model, and routing details .

Mode-S 71C716 frequently asked

What is Mode-S code 71C716?
71C716 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8716.
Where is Mode-S 71C716 registered?
Mode-S code 71C716 is allocated to Korea, South (KR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 71C716 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C716, octal 34343426, decimal 7,456,534.
What flights does 71C716 operate?
Mode-S 71C716 has broadcast 20 distinct callsigns, including ESR915, ESR968, ESR967, ESR916, ESR981.