sensors Mode-S transponder

A8C0D2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N663QX · EMBRAER ERJ-170-200 (long wing) · operated by HORIZON AIR INDUSTRIES INC

Hex
A8C0D2
Octal
52140322
Decimal
11,059,410
Country
US
Tail
N663QX
Type
E75L
No current signal · last broadcast 21h ago
Flights observed
19
Distinct callsigns
10
Country
US
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S A8C0D2.

Country allocation

The ICAO 24-bit address A8C0D2 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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 10 distinct

Callsign Airline Flights Last seen
QXE2328 - 4 2026-04-13
QXE2179 - 4 2026-04-13
QXE2329 Horizon Air 2 2026-04-13
QXE2194 - 2 2026-04-13
QXE2076 - 2 2026-04-13
QXE2195 - 1 2026-04-12
QXE2193 - 1 2026-04-12
QXE2189 - 1 2026-04-14
QXE2065 - 1 2026-04-12
QXE2018 Horizon Air 1 2026-04-13

Recent flights last 19

DateFlightRouteTakeoffLandingDuration
2026-04-14 QXE2189 - Apr 14, 05:15 UTCApr 14, 06:50 UTC1h 35m
2026-04-13 QXE2329 LAS → LAX Apr 13, 19:50 UTCApr 13, 22:50 UTC3h 0m
2026-04-13 QXE2329 LAS → LAX Apr 13, 19:30 UTCApr 13, 20:10 UTC40m
2026-04-13 QXE2328 - Apr 13, 16:15 UTCApr 13, 18:15 UTC2h 0m
2026-04-13 QXE2328 - Apr 13, 15:57 UTCApr 13, 18:21 UTC2h 24m
2026-04-13 QXE2328 - Apr 13, 15:57 UTCApr 13, 18:13 UTC2h 16m
2026-04-13 QXE2328 - Apr 13, 15:45 UTCApr 13, 15:50 UTC5m
2026-04-13 QXE2194 LAS → SAN Apr 13, 13:55 UTCApr 13, 14:43 UTC48m
2026-04-13 QXE2194 LAS → SAN Apr 13, 13:54 UTCApr 13, 14:39 UTC45m
2026-04-13 QXE2076 SAN → LAS Apr 13, 06:10 UTCApr 13, 06:45 UTC35m
2026-04-13 QXE2076 - Apr 13, 05:28 UTCApr 13, 06:11 UTC43m
2026-04-13 QXE2179 - Apr 13, 04:20 UTCApr 13, 04:35 UTC15m
2026-04-13 QXE2179 - Apr 13, 03:55 UTCApr 13, 04:35 UTC40m
2026-04-13 QXE2179 - Apr 13, 03:46 UTCApr 13, 04:30 UTC44m
2026-04-13 QXE2179 LAS → LAS Apr 13, 02:33 UTCApr 13, 03:22 UTC49m
2026-04-13 QXE2018 SEA → IDA Apr 13, 01:25 UTCApr 13, 02:15 UTC50m
2026-04-12 QXE2065 - Apr 12, 23:55 UTCApr 13, 00:20 UTC25m
2026-04-12 QXE2193 - Apr 12, 19:33 UTCApr 12, 21:14 UTC1h 41m
2026-04-12 QXE2195 - Apr 12, 16:56 UTCApr 12, 18:37 UTC1h 41m

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 N663QX page for operator, model, and routing details .

Mode-S A8C0D2 frequently asked

What is Mode-S code A8C0D2?
A8C0D2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N663QX.
Where is Mode-S A8C0D2 registered?
Mode-S code A8C0D2 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A8C0D2 broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8C0D2, octal 52140322, decimal 11,059,410.
What flights does A8C0D2 operate?
Mode-S A8C0D2 has broadcast 10 distinct callsigns, including QXE2328, QXE2179, QXE2329, QXE2194, QXE2076.