Apparatus

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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
No current signal · last broadcast 24m ago
Flights observed
697
Distinct callsigns
20
Country
US
Last broadcast
24m ago

Last known position

Most recent position reported by Mode-S A84E0C.

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 20 distinct

Callsign Airline Flights Last seen
QXE2443 Horizon Air 10 2026-06-07
QXE2003 - 10 2026-07-04
QXE2039 - 9 2026-07-14
QXE2137 - 8 2026-07-07
QXE2074 - 8 2026-07-14
QXE2038 - 8 2026-07-14
QXE2312 - 7 2026-07-10
QXE2277 - 7 2026-07-14
QXE2186 - 7 2026-07-10
QXE2113 - 7 2026-07-10
QXE2078 - 7 2026-06-27
QXE2073 Horizon Air 7 2026-07-14
QXE2367 Horizon Air 6 2026-06-23
QXE2291 Horizon Air 6 2026-06-23
QXE2267 Horizon Air 6 2026-07-10
QXE2226 - 6 2026-07-13
QXE2183 Horizon Air 6 2026-06-23
QXE2166 Horizon Air 6 2026-06-09
QXE2152 - 6 2026-06-23
QXE2117 - 6 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 QXE2039 - Jul 14, 21:55 UTCJul 14, 22:55 UTC59m
2026-07-14 QXE2038 - Jul 14, 20:00 UTCJul 14, 20:45 UTC45m
2026-07-14 QXE2074 - Jul 14, 17:45 UTCJul 14, 18:55 UTC1h 10m
2026-07-14 QXE2074 OME → ANC Jul 14, 17:32 UTCJul 14, 18:49 UTC1h 17m
2026-07-14 QXE2073 SFO → LAX Jul 14, 15:25 UTCJul 14, 16:20 UTC55m
2026-07-14 QXE2060 FAI → ANC Jul 14, 13:05 UTCJul 14, 13:55 UTC50m
2026-07-14 QXE2277 ANC → FAI Jul 14, 07:00 UTCJul 14, 07:40 UTC40m
2026-07-14 QXE2099 FAI → ANC Jul 14, 04:45 UTCJul 14, 05:35 UTC50m
2026-07-14 QXE2085 ANC → FAI Jul 14, 03:13 UTCJul 14, 03:57 UTC44m
2026-07-14 QXE2085 - Jul 14, 03:15 UTCJul 14, 04:00 UTC45m
2026-07-14 QXE2102 FAI → ANC Jul 14, 01:30 UTCJul 14, 02:20 UTC50m
2026-07-13 QXE2103 - Jul 13, 23:50 UTCJul 14, 00:35 UTC45m
2026-07-13 QXE2160 AKN → ANC Jul 13, 21:50 UTCJul 13, 22:35 UTC45m
2026-07-13 QXE2158 - Jul 13, 19:55 UTCJul 13, 20:45 UTC50m
2026-07-13 QXE2074 - Jul 13, 17:40 UTCJul 13, 19:00 UTC1h 20m
2026-07-13 QXE2073 SFO → LAX Jul 13, 15:20 UTCJul 13, 16:20 UTC1h 0m
2026-07-13 QXE2060 FAI → ANC Jul 13, 13:00 UTCJul 13, 13:45 UTC45m
2026-07-13 QXE2277 - Jul 13, 07:10 UTCJul 13, 07:55 UTC45m
2026-07-13 QXE2130 OTZ → ANC Jul 13, 02:35 UTCJul 13, 03:55 UTC1h 20m
2026-07-13 QXE2226 ANC → OTZ Jul 13, 00:10 UTCJul 13, 01:25 UTC1h 15m
2026-07-12 QXE2039 - Jul 12, 22:00 UTCJul 12, 22:55 UTC55m
2026-07-12 QXE2039 DLG → ANC Jul 12, 21:58 UTCJul 12, 22:49 UTC51m
2026-07-12 QXE2038 PHX → SFO Jul 12, 20:10 UTCJul 12, 21:00 UTC50m
2026-07-12 QXE2074 - Jul 12, 17:55 UTCJul 12, 19:05 UTC1h 10m
2026-07-12 QXE2073 SFO → LAX Jul 12, 15:35 UTCJul 12, 16:25 UTC50m
2026-07-12 QXE2060 FAI → ANC Jul 12, 13:05 UTCJul 12, 13:55 UTC50m
2026-07-12 QXE2277 ANC → FAI Jul 12, 07:15 UTCJul 12, 07:45 UTC30m
2026-07-12 QXE2277 ANC → FAI Jul 12, 07:01 UTCJul 12, 07:45 UTC45m
2026-07-12 QXE2130 OTZ → ANC Jul 12, 02:35 UTCJul 12, 03:55 UTC1h 20m
2026-07-12 QXE2226 - Jul 12, 00:20 UTCJul 12, 01:35 UTC1h 15m
2026-07-11 QXE2039 - Jul 11, 22:05 UTCJul 11, 23:00 UTC55m
2026-07-11 QXE2038 PHX → SFO Jul 11, 20:25 UTCJul 11, 21:15 UTC50m
2026-07-11 QXE2074 - Jul 11, 17:55 UTCJul 11, 19:05 UTC1h 10m
2026-07-11 QXE2073 SFO → LAX Jul 11, 15:40 UTCJul 11, 16:35 UTC55m
2026-07-11 QXE2192 - Jul 11, 04:40 UTCJul 11, 07:55 UTC3h 15m
2026-07-11 QXE2127 SEA → OAK Jul 11, 00:45 UTCJul 11, 01:50 UTC1h 5m
2026-07-10 QXE2206 - Jul 10, 22:30 UTCJul 10, 23:25 UTC55m
2026-07-10 QXE2283 - Jul 10, 19:30 UTCJul 10, 20:35 UTC1h 5m
2026-07-10 QXE2186 - Jul 10, 15:55 UTCJul 10, 18:10 UTC2h 15m
2026-07-10 QXE2267 SEA → OAK Jul 10, 13:10 UTCJul 10, 14:00 UTC50m
2026-07-10 QXE2312 SAN → SBP Jul 10, 06:25 UTCJul 10, 07:13 UTC48m
2026-07-10 QXE2312 - Jul 10, 06:25 UTCJul 10, 07:20 UTC55m
2026-07-10 QXE2213 SJC → SAN Jul 10, 03:50 UTCJul 10, 05:00 UTC1h 10m
2026-07-10 QXE2113 - Jul 10, 01:05 UTCJul 10, 02:30 UTC1h 25m
2026-07-09 QXE2221 - Jul 9, 19:15 UTCJul 9, 23:45 UTC4h 30m
2026-07-09 QXE2289 MFR → SEA Jul 9, 17:20 UTCJul 9, 18:10 UTC50m
2026-07-09 QXE2018 SEA → IDA Jul 9, 00:25 UTCJul 9, 01:20 UTC55m
2026-07-08 QXE2028 SJC → AUS Jul 8, 22:30 UTCJul 8, 23:20 UTC50m
2026-07-08 QXE2024 SAN → PAE Jul 8, 20:35 UTCJul 8, 21:30 UTC55m
2026-07-08 QXE2416 - Jul 8, 18:45 UTCJul 8, 19:30 UTC45m

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?
No active broadcast right now. Last signal was 24m ago.
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 20 distinct callsigns, including QXE2443, QXE2003, QXE2039, QXE2137, QXE2074.