Apparatus

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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 3h ago
Flights observed
185
Distinct callsigns
20
Country
KR
Last broadcast
3h ago

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 20 2026-05-28
ESR916 Eastar Jet 18 2026-05-29
ESR981 Eastar Jet 16 2026-05-28
ESR967 Eastar Jet 9 2026-05-26
ESR968 Eastar Jet 8 2026-05-26
ESR982 Eastar Jet 6 2026-05-17
ESR988 Eastar Jet 5 2026-05-26
ESR987 Eastar Jet 5 2026-05-26
ESR936 Eastar Jet 5 2026-05-25
ESR284 Eastar Jet 5 2026-05-10
ESR219 Eastar Jet 5 2026-05-10
ESR212 Eastar Jet 5 2026-05-10
ESR283 Eastar Jet 4 2026-05-10
ESR230 Eastar Jet 4 2026-05-10
ESR211 Eastar Jet 4 2026-05-10
ESR206 Eastar Jet 4 2026-05-10
ESR952 Eastar Jet 3 2026-05-30
ESR951 Eastar Jet 3 2026-05-29
ESR935 Eastar Jet 3 2026-05-22
ESR281 Eastar Jet 3 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ESR952 CTS → PUS May 30, 08:40 UTCMay 30, 10:35 UTC1h 55m
2026-05-29 ESR951 PUS → CTS May 29, 18:45 UTCMay 30, 07:00 UTC12h 15m
2026-05-29 ESR916 KIX → PUS May 29, 07:10 UTCMay 29, 15:50 UTC8h 40m
2026-05-28 ESR981 PUS → PQC May 28, 11:40 UTCMay 29, 05:40 UTC18h 0m
2026-05-28 ESR981 PUS → PQC May 28, 07:35 UTCMay 29, 05:40 UTC22h 5m
2026-05-28 ESR981 PUS → PQC May 28, 07:10 UTCMay 29, 05:30 UTC22h 20m
2026-05-28 ESR915 PUS → KIX May 28, 05:05 UTCMay 28, 05:45 UTC40m
2026-05-27 ESR916 KIX → PUS May 27, 07:15 UTCMay 27, 07:50 UTC35m
2026-05-27 ESR915 PUS → KIX May 27, 04:55 UTCMay 27, 05:35 UTC40m
2026-05-26 ESR988 TPE → PUS May 26, 19:30 UTCMay 26, 19:55 UTC25m
2026-05-26 ESR987 PUS → TPE May 26, 14:55 UTCMay 26, 15:24 UTC30m
2026-05-26 ESR968 KMJ → PUS May 26, 05:59 UTCMay 26, 06:14 UTC15m
2026-05-26 ESR967 PUS → KMJ May 26, 04:00 UTCMay 26, 04:15 UTC15m
2026-05-25 ESR936 ALA → PUS May 25, 10:10 UTCMay 26, 00:39 UTC14h 29m
2026-05-25 ESR916 KIX → PUS May 25, 07:15 UTCMay 25, 07:50 UTC35m
2026-05-25 ESR915 PUS → KIX May 25, 05:05 UTCMay 25, 05:45 UTC40m
2026-05-24 ESR984 TPE → PUS May 24, 19:20 UTCMay 24, 19:40 UTC20m
2026-05-24 ESR983 PUS → TPE May 24, 15:05 UTCMay 24, 15:35 UTC30m
2026-05-24 ESR944 FUK → PUS May 24, 08:00 UTCMay 24, 08:10 UTC10m
2026-05-23 ESR968 KMJ → PUS May 23, 06:10 UTCMay 23, 06:20 UTC10m
2026-05-22 ESR935 PUS → ALA May 22, 10:10 UTCMay 23, 00:25 UTC14h 15m
2026-05-22 ESR916 KIX → PUS May 22, 07:00 UTCMay 22, 07:35 UTC35m
2026-05-22 ESR915 PUS → KIX May 22, 04:50 UTCMay 22, 05:30 UTC40m
2026-05-22 ESR941 PUS → FUK May 22, 00:35 UTCMay 22, 00:45 UTC10m
2026-05-21 ESR981 PUS → PQC May 21, 07:05 UTCMay 21, 19:50 UTC12h 45m
2026-05-21 ESR915 PUS → KIX May 21, 05:00 UTCMay 21, 05:45 UTC45m
2026-05-20 ESR988 TPE → PUS May 20, 18:45 UTCMay 20, 19:05 UTC20m
2026-05-20 ESR987 PUS → TPE May 20, 15:00 UTCMay 20, 15:20 UTC20m
2026-05-20 ESR952 CTS → PUS May 20, 08:35 UTCMay 20, 10:25 UTC1h 50m
2026-05-20 ESR951 PUS → CTS May 20, 02:05 UTCMay 20, 07:20 UTC5h 16m
2026-05-19 ESR913 PUS → KIX May 19, 22:20 UTCMay 19, 23:00 UTC40m
2026-05-19 ESR968 KMJ → PUS May 19, 06:05 UTCMay 19, 06:15 UTC10m
2026-05-19 ESR967 PUS → KMJ May 19, 04:00 UTCMay 19, 04:10 UTC10m
2026-05-18 ESR936 ALA → PUS May 18, 10:25 UTCMay 19, 00:50 UTC14h 24m
2026-05-18 ESR916 KIX → PUS May 18, 07:05 UTCMay 18, 07:35 UTC30m
2026-05-18 ESR915 PUS → KIX May 18, 05:00 UTCMay 18, 05:45 UTC45m
2026-05-17 ESR982 PQC → PUS May 17, 07:10 UTCMay 17, 20:25 UTC13h 15m
2026-05-17 ESR915 PUS → KIX May 17, 04:55 UTCMay 17, 05:35 UTC40m
2026-05-16 ESR982 PQC → PUS May 16, 11:21 UTCMay 16, 20:10 UTC8h 50m
2026-05-16 ESR967 PUS → KMJ May 16, 04:00 UTCMay 16, 04:10 UTC10m
2026-05-15 ESR935 PUS → ALA May 15, 10:20 UTCMay 16, 00:35 UTC14h 14m
2026-05-15 ESR916 KIX → PUS May 15, 07:15 UTCMay 15, 07:45 UTC30m
2026-05-15 ESR915 PUS → KIX May 15, 04:55 UTCMay 15, 05:40 UTC45m
2026-05-14 ESR981 PUS → PQC May 14, 02:55 UTCMay 14, 19:55 UTC17h 0m
2026-05-13 ESR963 PUS → OKA May 13, 23:15 UTCMay 14, 00:30 UTC1h 15m
2026-05-13 ESR981 PUS → PQC May 13, 11:35 UTCMay 13, 19:50 UTC8h 15m
2026-05-13 ESR916 KIX → PUS May 13, 07:10 UTCMay 13, 07:40 UTC30m
2026-05-13 ESR915 PUS → KIX May 13, 05:00 UTCMay 13, 05:50 UTC50m
2026-05-12 ESR984 TPE → PUS May 12, 18:45 UTCMay 12, 19:10 UTC25m
2026-05-12 ESR983 PUS → TPE May 12, 14:20 UTCMay 12, 14:55 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 3h ago.
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, ESR916, ESR981, ESR967, ESR968.