sensors Mode-S transponder

A84E0C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N634QX · EMBRAER ERJ-170-200 (long wing) · operated by HORIZON AIR INDUSTRIES INC

Hex
A84E0C
Octal
52047014
Decimal
11,030,028
Country
US
Tail
N634QX
Type
E75L
Broadcasting now · callsign QXE2443 · 36,000 ft
Flights observed
17
Distinct callsigns
9
Country
US
Last broadcast
17h ago

Current position

A84E0C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A84E0C 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 9 distinct

Callsign Airline Flights Last seen
QXE2078 - 4 2026-04-13
QXE2315 Horizon Air 2 2026-04-13
QXE2296 - 2 2026-04-14
QXE2273 - 2 2026-04-13
QXE2218 - 2 2026-04-13
QXE2092 - 2 2026-04-13
QXE2329 Horizon Air 1 2026-04-12
QXE2328 - 1 2026-04-12
QXE2189 - 1 2026-04-13

Recent flights last 17

DateFlightRouteTakeoffLandingDuration
2026-04-14 QXE2296 - Apr 14, 07:10 UTCApr 14, 07:25 UTC15m
2026-04-14 QXE2296 - Apr 14, 06:55 UTCApr 14, 07:10 UTC15m
2026-04-13 QXE2315 SEA → MSO Apr 13, 22:30 UTCApr 13, 23:25 UTC55m
2026-04-13 QXE2315 SEA → MSO Apr 13, 20:02 UTCApr 13, 22:13 UTC2h 11m
2026-04-13 QXE2218 - Apr 13, 18:07 UTCApr 13, 19:44 UTC1h 37m
2026-04-13 QXE2218 - Apr 13, 18:25 UTCApr 13, 20:16 UTC1h 51m
2026-04-13 QXE2078 - Apr 13, 16:15 UTCApr 13, 17:10 UTC55m
2026-04-13 QXE2078 - Apr 13, 15:50 UTCApr 13, 17:10 UTC1h 20m
2026-04-13 QXE2078 - Apr 13, 14:15 UTCApr 13, 15:47 UTC1h 32m
2026-04-13 QXE2078 - Apr 13, 15:16 UTCApr 13, 16:57 UTC1h 41m
2026-04-13 QXE2189 - Apr 13, 05:15 UTCApr 13, 07:45 UTC2h 30m
2026-04-13 QXE2273 - Apr 13, 03:55 UTCApr 13, 04:10 UTC15m
2026-04-13 QXE2273 LAS → SAN Apr 13, 03:20 UTCApr 13, 04:10 UTC50m
2026-04-13 QXE2092 - Apr 13, 00:20 UTCApr 13, 00:25 UTC5m
2026-04-12 QXE2092 - Apr 12, 23:55 UTCApr 13, 00:25 UTC30m
2026-04-12 QXE2329 LAS → LAX Apr 12, 19:23 UTCApr 12, 22:23 UTC3h 0m
2026-04-12 QXE2328 - Apr 12, 17:15 UTCApr 12, 18:20 UTC1h 5m

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 N634QX page for operator, model, and routing details .

Mode-S A84E0C frequently asked

What is Mode-S code A84E0C?
A84E0C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N634QX.
Where is Mode-S A84E0C registered?
Mode-S code A84E0C 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 A84E0C broadcasting right now?
Yes. Mode-S A84E0C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84E0C, octal 52047014, decimal 11,030,028.
What flights does A84E0C operate?
Mode-S A84E0C has broadcast 9 distinct callsigns, including QXE2078, QXE2315, QXE2296, QXE2273, QXE2218.