sensors Mode-S transponder

7277D0

ICAO 24-bit transponder address

Currently assigned to P-672 · ANTONOV An-148

Hex
7277D0
Octal
34473720
Decimal
7,501,776
Tail
P-672
Type
A148
No current signal · last broadcast 19d ago
Flights observed
3
Distinct callsigns
2
Country
-
Last broadcast
19d ago

Last known position

Most recent position reported by Mode-S 7277D0.

Callsign history 2 distinct

Callsign Airline Flights Last seen
KOR371 - 1 2026-05-08
KOR151 Air Koryo 1 2026-05-04

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-05-08 KOR371 - May 8, 01:55 UTCMay 8, 06:20 UTC4h 25m
2026-05-05 - - May 5, 05:45 UTCMay 5, 05:55 UTC10m
2026-05-04 KOR151 FNJ → PEK May 4, 23:40 UTCMay 4, 23:55 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 P-672 page for operator, model, and routing details .

Mode-S 7277D0 frequently asked

What is Mode-S code 7277D0?
7277D0 is an ICAO 24-bit transponder address. Assigned to P-672.
Is 7277D0 broadcasting right now?
No active broadcast right now. Last signal was 19d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7277D0, octal 34473720, decimal 7,501,776.
What flights does 7277D0 operate?
Mode-S 7277D0 has broadcast 2 distinct callsigns, including KOR371, KOR151.