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sensors Mode-S transponder

A8881E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N649QX · EMBRAER ERJ-170-200 (long wing) · operated by HORIZON AIR INDUSTRIES INC

Hex
A8881E
Octal
52104036
Decimal
11,044,894
Country
US
Tail
N649QX
Type
E75L
Broadcasting now · callsign QXE2209 · 3,800 ft
Flights observed
675
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

A8881E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A8881E 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
QXE2056 Horizon Air 10 2026-06-29
QXE2419 Horizon Air 7 2026-06-08
QXE2400 - 7 2026-07-07
QXE2307 - 7 2026-06-17
QXE2074 Horizon Air 7 2026-06-08
QXE2440 Horizon Air 6 2026-05-22
QXE2346 - 6 2026-06-25
QXE2339 - 6 2026-07-06
QXE2269 Horizon Air 6 2026-06-07
QXE2268 Horizon Air 6 2026-06-07
QXE2215 Horizon Air 6 2026-07-03
QXE2178 Horizon Air 6 2026-06-05
QXE2107 Horizon Air 6 2026-05-24
QXE2091 - 6 2026-07-09
QXE2423 Horizon Air 5 2026-05-18
QXE2325 - 5 2026-07-07
QXE2320 - 5 2026-06-30
QXE2295 - 5 2026-07-05
QXE2274 - 5 2026-07-09
QXE2249 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 QXE2089 - Jul 14, 17:35 UTCJul 14, 18:30 UTC55m
2026-07-14 QXE2398 - Jul 14, 13:05 UTCJul 14, 16:20 UTC3h 15m
2026-07-14 QXE2192 PDX → ANC Jul 14, 04:50 UTCJul 14, 08:30 UTC3h 40m
2026-07-14 QXE2372 - Jul 14, 03:20 UTCJul 14, 03:55 UTC35m
2026-07-14 QXE2016 YVR → SEA Jul 14, 01:00 UTCJul 14, 01:35 UTC35m
2026-07-13 QXE2007 - Jul 13, 23:25 UTCJul 13, 23:50 UTC25m
2026-07-13 QXE2014 - Jul 13, 21:25 UTCJul 13, 22:00 UTC35m
2026-07-13 QXE2005 SEA → YVR Jul 13, 19:45 UTCJul 13, 20:15 UTC30m
2026-07-13 QXE2069 GEG → SEA Jul 13, 16:21 UTCJul 13, 17:06 UTC45m
2026-07-13 QXE2069 GEG → SEA Jul 13, 16:25 UTCJul 13, 17:10 UTC45m
2026-07-13 QXE2135 SEA → GEG Jul 13, 14:40 UTCJul 13, 15:20 UTC40m
2026-07-13 QXE2065 GEG → SEA Jul 13, 12:15 UTCJul 13, 13:05 UTC50m
2026-07-13 QXE2071 SEA → GEG Jul 13, 05:25 UTCJul 13, 06:05 UTC40m
2026-07-13 QXE2138 - Jul 13, 02:45 UTCJul 13, 03:55 UTC1h 10m
2026-07-13 QXE2123 - Jul 13, 00:15 UTCJul 13, 01:01 UTC45m
2026-07-12 QXE2119 GEG → SEA Jul 12, 22:10 UTCJul 12, 23:05 UTC55m
2026-07-12 QXE2020 - Jul 12, 19:15 UTCJul 12, 21:20 UTC2h 5m
2026-07-12 QXE2020 SNA → GEG Jul 12, 19:15 UTCJul 12, 21:25 UTC2h 10m
2026-07-12 QXE2270 - Jul 12, 15:10 UTCJul 12, 18:01 UTC2h 50m
2026-07-12 QXE2270 PAE → SNA Jul 12, 15:09 UTCJul 12, 17:53 UTC2h 44m
2026-07-12 QXE2083 - Jul 12, 04:35 UTCJul 12, 06:05 UTC1h 30m
2026-07-11 QXE2063 - Jul 11, 21:35 UTCJul 12, 03:45 UTC6h 10m
2026-07-11 QXE2139 - Jul 11, 18:15 UTCJul 11, 20:20 UTC2h 5m
2026-07-11 QXE2139 PAE → SFO Jul 11, 18:20 UTCJul 11, 20:17 UTC1h 57m
2026-07-11 QXE2249 SFO → PAE Jul 11, 15:51 UTCJul 11, 17:03 UTC1h 12m
2026-07-11 QXE2249 SFO → PAE Jul 11, 15:30 UTCJul 11, 17:05 UTC1h 35m
2026-07-11 QXE2112 - Jul 11, 05:05 UTCJul 11, 06:35 UTC1h 30m
2026-07-11 QXE2371 - Jul 11, 02:40 UTCJul 11, 03:40 UTC1h 0m
2026-07-11 QXE2104 - Jul 11, 00:35 UTCJul 11, 01:30 UTC55m
2026-07-10 QXE2221 - Jul 10, 19:10 UTCJul 10, 23:40 UTC4h 30m
2026-07-10 QXE2289 LAS → SAN Jul 10, 17:05 UTCJul 10, 17:55 UTC50m
2026-07-10 QXE2196 - Jul 10, 02:20 UTCJul 10, 03:15 UTC55m
2026-07-10 QXE2196 SAN → LAS Jul 10, 02:16 UTCJul 10, 03:06 UTC50m
2026-07-09 QXE2406 - Jul 9, 23:55 UTCJul 10, 01:05 UTC1h 10m
2026-07-09 QXE2405 - Jul 9, 21:55 UTCJul 9, 23:00 UTC1h 5m
2026-07-09 QXE2188 SJC → PDX Jul 9, 19:10 UTCJul 9, 20:40 UTC1h 30m
2026-07-09 QXE2091 - Jul 9, 17:15 UTCJul 9, 18:15 UTC1h 0m
2026-07-09 QXE2091 SAN → SJC Jul 9, 17:12 UTCJul 9, 17:59 UTC47m
2026-07-09 QXE2253 LAS → SAN Jul 9, 15:33 UTCJul 9, 16:03 UTC30m
2026-07-09 QXE2253 - Jul 9, 15:35 UTCJul 9, 16:20 UTC45m
2026-07-09 QXE2274 - Jul 9, 03:40 UTCJul 9, 04:35 UTC55m
2026-07-09 QXE2274 SAN → LAS Jul 9, 03:39 UTCJul 9, 04:29 UTC50m
2026-07-09 QXE2257 SAN → SFO Jul 9, 01:20 UTCJul 9, 02:40 UTC1h 20m
2026-07-09 QXE2257 SAN → SFO Jul 9, 01:18 UTCJul 9, 02:35 UTC1h 17m
2026-07-08 QXE2458 - Jul 8, 22:55 UTCJul 9, 00:20 UTC1h 25m
2026-07-08 QXE2458 LAS → STS Jul 8, 23:01 UTCJul 9, 00:14 UTC1h 13m
2026-07-08 QXE2459 - Jul 8, 20:30 UTCJul 8, 21:40 UTC1h 10m
2026-07-08 QXE2330 - Jul 8, 18:15 UTCJul 8, 19:25 UTC1h 10m
2026-07-08 QXE2002 - Jul 8, 16:00 UTCJul 8, 16:50 UTC50m
2026-07-08 QXE2228 PAE → SFO Jul 8, 05:05 UTCJul 8, 05:55 UTC50m

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 N649QX page for operator, model, and routing details .

Mode-S A8881E frequently asked

What is Mode-S code A8881E?
A8881E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N649QX.
Where is Mode-S A8881E registered?
Mode-S code A8881E 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 A8881E broadcasting right now?
Yes. Mode-S A8881E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8881E, octal 52104036, decimal 11,044,894.
What flights does A8881E operate?
Mode-S A8881E has broadcast 20 distinct callsigns, including QXE2056, QXE2419, QXE2400, QXE2307, QXE2074.