Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast Jul 26, 13:25 UTC
Flights observed
770
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 13:25 UTC

Last known position

Most recent position reported by Mode-S A8881E.

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
QXE2307 Horizon Air 9 2026-07-17
QXE2269 Horizon Air 9 2026-07-22
QXE2268 Horizon Air 8 2026-07-22
QXE2419 Horizon Air 7 2026-06-08
QXE2400 - 7 2026-07-07
QXE2152 Horizon Air 7 2026-07-24
QXE2074 Horizon Air 7 2026-06-08
QXE2440 Horizon Air 6 2026-05-22
QXE2346 - 6 2026-06-25
QXE2339 - 6 2026-07-06
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
QXE2084 Horizon Air 6 2026-07-24
QXE2423 Horizon Air 5 2026-05-18
QXE2325 - 5 2026-07-07
QXE2320 - 5 2026-06-30
QXE2295 - 5 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QXE2300 PDX → ONT Jul 26, 12:35 UTCJul 26, 13:20 UTC45m
2026-07-26 QXE2245 LAX → STS Jul 26, 05:55 UTCJul 26, 06:25 UTC30m
2026-07-26 QXE2128 SEA → SFO Jul 26, 01:55 UTCJul 26, 03:40 UTC1h 45m
2026-07-25 QXE2129 SEA → SFO Jul 25, 23:05 UTCJul 26, 01:05 UTC2h 0m
2026-07-25 QXE2129 SEA → SFO Jul 25, 23:02 UTCJul 26, 01:08 UTC2h 6m
2026-07-25 QXE2014 SBP → PDX Jul 25, 21:09 UTCJul 25, 21:32 UTC23m
2026-07-25 QXE2014 SBP → PDX Jul 25, 21:10 UTCJul 25, 21:45 UTC35m
2026-07-25 QXE2005 MRY → SEA Jul 25, 19:05 UTCJul 25, 19:40 UTC35m
2026-07-25 QXE2069 SFO → PDX Jul 25, 16:15 UTCJul 25, 17:00 UTC45m
2026-07-25 QXE2135 PAE → LAX Jul 25, 14:30 UTCJul 25, 15:10 UTC40m
2026-07-25 QXE2300 PDX → ONT Jul 25, 12:30 UTCJul 25, 13:10 UTC40m
2026-07-25 QXE2245 LAX → STS Jul 25, 06:05 UTCJul 25, 06:35 UTC30m
2026-07-25 QXE2138 SFO → PAE Jul 25, 02:45 UTCJul 25, 03:55 UTC1h 10m
2026-07-25 QXE2123 SJC → SEA Jul 25, 00:25 UTCJul 25, 01:10 UTC45m
2026-07-24 QXE2152 SEA → PUW Jul 24, 22:35 UTCJul 24, 23:25 UTC50m
2026-07-24 QXE2291 PDX → SMF Jul 24, 21:00 UTCJul 24, 21:45 UTC45m
2026-07-24 QXE2114 SJC → SEA Jul 24, 18:00 UTCJul 24, 19:00 UTC1h 0m
2026-07-24 QXE2111 SEA → PDX Jul 24, 16:00 UTCJul 24, 17:05 UTC1h 5m
2026-07-24 QXE2165 ANC → BET Jul 24, 13:30 UTCJul 24, 14:10 UTC40m
2026-07-24 QXE2403 SJC → SEA Jul 24, 06:00 UTCJul 24, 06:30 UTC30m
2026-07-24 QXE2084 PAE → SFO Jul 24, 03:10 UTCJul 24, 04:20 UTC1h 10m
2026-07-24 QXE2084 PAE → SFO Jul 24, 02:30 UTCJul 24, 02:40 UTC10m
2026-07-24 QXE2353 PSP → SFO Jul 24, 00:15 UTCJul 24, 01:10 UTC55m
2026-07-23 QXE2275 SJC → PDX Jul 23, 22:20 UTCJul 23, 22:40 UTC20m
2026-07-23 QXE2155 SAN → PAE Jul 23, 20:50 UTCJul 23, 21:05 UTC15m
2026-07-23 QXE2241 PAE → SFO Jul 23, 18:50 UTCJul 23, 19:10 UTC20m
2026-07-23 QXE2048 PDX → SFO Jul 23, 17:15 UTCJul 23, 17:40 UTC25m
2026-07-23 QXE2108 RDM → SEA Jul 23, 15:30 UTCJul 23, 16:00 UTC30m
2026-07-23 QXE2432 OAK → SEA Jul 23, 13:55 UTCJul 23, 14:25 UTC30m
2026-07-23 QXE2431 RDD → SEA Jul 23, 12:10 UTCJul 23, 12:40 UTC30m
2026-07-22 QXE2269 SEA → MFR Jul 22, 17:40 UTCJul 22, 20:10 UTC2h 30m
2026-07-22 QXE2268 EUG → SEA Jul 22, 14:10 UTCJul 22, 16:40 UTC2h 30m
2026-07-22 QXE2372 LAX → SFO Jul 22, 02:40 UTCJul 22, 03:10 UTC30m
2026-07-22 QXE2016 SEA → OAK Jul 22, 00:40 UTCJul 22, 01:10 UTC30m
2026-07-21 QXE2007 SEA → YVR Jul 21, 22:50 UTCJul 21, 23:20 UTC30m
2026-07-21 QXE2000 ANC → OTZ Jul 21, 21:15 UTCJul 21, 21:35 UTC20m
2026-07-21 QXE2001 - Jul 21, 19:50 UTCJul 21, 20:05 UTC15m
2026-07-21 QXE2171 - Jul 21, 17:50 UTCJul 21, 18:30 UTC40m
2026-07-21 QXE2195 SEA → BIL Jul 21, 16:05 UTCJul 21, 16:35 UTC30m
2026-07-21 QXE2153 SFO → PHX Jul 21, 13:20 UTCJul 21, 14:20 UTC1h 0m
2026-07-21 QXE2154 PAE → SAN Jul 21, 03:45 UTCJul 21, 04:35 UTC50m
2026-07-21 QXE2366 SFO → LAX Jul 21, 01:30 UTCJul 21, 02:05 UTC35m
2026-07-21 QXE2366 SFO → LAX Jul 21, 01:26 UTCJul 21, 01:59 UTC33m
2026-07-20 QXE2367 SEA → PSC Jul 20, 23:50 UTCJul 21, 00:25 UTC35m
2026-07-20 QXE2152 SEA → PUW Jul 20, 21:45 UTCJul 20, 22:40 UTC55m
2026-07-20 QXE2291 PDX → SMF Jul 20, 20:05 UTCJul 20, 20:50 UTC45m
2026-07-20 QXE2291 PDX → SMF Jul 20, 20:05 UTCJul 20, 20:47 UTC42m
2026-07-20 QXE2114 SJC → SEA Jul 20, 17:45 UTCJul 20, 18:35 UTC50m
2026-07-20 QXE2111 SEA → PDX Jul 20, 15:50 UTCJul 20, 16:55 UTC1h 5m
2026-07-20 QXE2011 PHX → SFO Jul 20, 13:25 UTCJul 20, 14:00 UTC35m

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?
No active broadcast right now. Last signal was Jul 26, 13:25 UTC.
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, QXE2307, QXE2269, QXE2268, QXE2419.