Apparatus

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sensors Mode-S transponder

A86A66

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N641QX · EMBRAER ERJ-170-200 (long wing) · operated by HORIZON AIR INDUSTRIES INC

Hex
A86A66
Octal
52065146
Decimal
11,037,286
Country
US
Tail
N641QX
Type
E75L
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
837
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A86A66.

Country allocation

The ICAO 24-bit address A86A66 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
QXE2217 - 11 2026-07-14
QXE2421 - 9 2026-06-30
QXE2117 - 9 2026-07-16
QXE2352 - 8 2026-07-17
QXE2187 Horizon Air 8 2026-07-19
QXE2443 Horizon Air 7 2026-05-25
QXE2220 - 7 2026-07-15
QXE2154 Horizon Air 7 2026-07-24
QXE2138 Horizon Air 7 2026-07-26
QXE2135 - 7 2026-07-15
QXE2101 Horizon Air 7 2026-06-09
QXE2094 - 7 2026-07-17
QXE2432 - 6 2026-07-05
QXE2340 Horizon Air 6 2026-06-05
QXE2339 Horizon Air 6 2026-07-24
QXE2125 - 6 2026-07-05
QXE2121 Horizon Air 6 2026-07-26
QXE2100 Horizon Air 6 2026-06-09
QXE2076 - 6 2026-06-23
QXE2027 - 6 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QXE2115 SNA → PAE Jul 26, 21:05 UTCJul 26, 21:30 UTC25m
2026-07-26 QXE2276 LAX → SFO Jul 26, 18:10 UTCJul 26, 19:45 UTC1h 35m
2026-07-26 QXE2271 SEA → OAK Jul 26, 15:35 UTCJul 26, 16:50 UTC1h 15m
2026-07-26 QXE2122 PDX → SFO Jul 26, 12:50 UTCJul 26, 13:50 UTC1h 0m
2026-07-26 QXE2121 MFR → SEA Jul 26, 04:57 UTCJul 26, 05:40 UTC43m
2026-07-26 QXE2121 MFR → SEA Jul 26, 04:45 UTCJul 26, 05:30 UTC45m
2026-07-26 QXE2138 SFO → PAE Jul 26, 02:20 UTCJul 26, 03:30 UTC1h 10m
2026-07-26 QXE2138 SFO → PAE Jul 26, 02:18 UTCJul 26, 03:12 UTC54m
2026-07-26 QXE2123 SJC → SEA Jul 26, 00:15 UTCJul 26, 00:55 UTC40m
2026-07-26 QXE2123 SJC → SEA Jul 26, 00:11 UTCJul 26, 01:14 UTC1h 3m
2026-07-25 QXE2152 SEA → PUW Jul 25, 22:10 UTCJul 25, 23:00 UTC50m
2026-07-25 QXE2291 PDX → SMF Jul 25, 20:30 UTCJul 25, 21:15 UTC45m
2026-07-25 QXE2114 SJC → SEA Jul 25, 18:10 UTCJul 25, 19:10 UTC1h 0m
2026-07-25 QXE2111 SEA → PDX Jul 25, 16:00 UTCJul 25, 17:10 UTC1h 10m
2026-07-25 QXE2122 PDX → SFO Jul 25, 12:50 UTCJul 25, 13:50 UTC1h 0m
2026-07-25 QXE2121 MFR → SEA Jul 25, 04:45 UTCJul 25, 05:30 UTC45m
2026-07-25 QXE2121 MFR → SEA Jul 25, 04:43 UTCJul 25, 05:39 UTC56m
2026-07-25 QXE2313 PAE → SFO Jul 25, 02:50 UTCJul 25, 03:20 UTC30m
2026-07-25 QXE2302 SEA → SMF Jul 25, 01:20 UTCJul 25, 01:50 UTC30m
2026-07-25 QXE2302 SEA → SMF Jul 25, 01:16 UTCJul 25, 01:45 UTC29m
2026-07-24 QXE2110 SAN → SFO Jul 24, 23:05 UTCJul 25, 00:05 UTC1h 0m
2026-07-24 QXE2105 SFO → SEA Jul 24, 21:05 UTCJul 24, 21:50 UTC45m
2026-07-24 QXE2179 SAN → PAE Jul 24, 17:50 UTCJul 24, 18:40 UTC50m
2026-07-24 QXE2072 SEA → FCA Jul 24, 16:05 UTCJul 24, 16:45 UTC40m
2026-07-24 QXE2153 SFO → PHX Jul 24, 13:20 UTCJul 24, 14:20 UTC1h 0m
2026-07-24 QXE2154 PAE → SAN Jul 24, 06:04 UTCJul 24, 06:28 UTC24m
2026-07-24 QXE2154 PAE → SAN Jul 24, 06:00 UTCJul 24, 06:20 UTC20m
2026-07-24 QXE2154 PAE → SAN Jul 24, 03:45 UTCJul 24, 05:10 UTC1h 25m
2026-07-24 QXE2339 BOI → ONT Jul 24, 01:35 UTCJul 24, 02:25 UTC50m
2026-07-24 QXE2339 BOI → ONT Jul 24, 01:34 UTCJul 24, 02:16 UTC42m
2026-07-23 QXE2338 MFR → SEA Jul 23, 23:55 UTCJul 24, 00:40 UTC45m
2026-07-23 QXE2231 BOI → SJC Jul 23, 21:30 UTCJul 23, 22:40 UTC1h 10m
2026-07-23 QXE2341 PDX → OAK Jul 23, 18:45 UTCJul 23, 20:25 UTC1h 40m
2026-07-23 QXE2224 SAN → PAE Jul 23, 15:15 UTCJul 23, 17:15 UTC2h 0m
2026-07-23 QXE2162 SFO → SNA Jul 23, 04:30 UTCJul 23, 06:15 UTC1h 45m
2026-07-23 QXE2284 SEA → FCA Jul 23, 01:25 UTCJul 23, 03:15 UTC1h 50m
2026-07-22 QXE2264 SJC → LAX Jul 22, 23:40 UTCJul 23, 00:30 UTC50m
2026-07-22 QXE2264 SJC → LAX Jul 22, 23:44 UTCJul 23, 00:24 UTC40m
2026-07-22 QXE2180 SAN → SFO Jul 22, 22:00 UTCJul 22, 22:40 UTC40m
2026-07-22 QXE2376 SMF → SEA Jul 22, 19:05 UTCJul 22, 20:40 UTC1h 35m
2026-07-22 QXE2375 GEG → SFO Jul 22, 16:15 UTCJul 22, 18:00 UTC1h 45m
2026-07-22 QXE2011 PHX → SFO Jul 22, 13:25 UTCJul 22, 14:05 UTC40m
2026-07-22 QXE2009 PHX → SFO Jul 22, 03:15 UTCJul 22, 03:40 UTC25m
2026-07-22 QXE2339 BOI → ONT Jul 22, 01:02 UTCJul 22, 01:46 UTC44m
2026-07-22 QXE2339 BOI → ONT Jul 22, 01:15 UTCJul 22, 01:55 UTC40m
2026-07-21 QXE2338 MFR → SEA Jul 21, 23:10 UTCJul 22, 00:00 UTC50m
2026-07-21 QXE2205 RNO → LAX Jul 21, 21:10 UTCJul 21, 21:35 UTC25m
2026-07-21 QXE2181 SEA → GEG Jul 21, 19:25 UTCJul 21, 20:00 UTC35m
2026-07-21 QXE2325 PDX → SFO Jul 21, 16:50 UTCJul 21, 17:55 UTC1h 5m
2026-07-21 QXE2202 ONT → PDX Jul 21, 14:05 UTCJul 21, 15:05 UTC1h 0m

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 N641QX page for operator, model, and routing details .

Mode-S A86A66 frequently asked

What is Mode-S code A86A66?
A86A66 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N641QX.
Where is Mode-S A86A66 registered?
Mode-S code A86A66 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 A86A66 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A86A66, octal 52065146, decimal 11,037,286.
What flights does A86A66 operate?
Mode-S A86A66 has broadcast 20 distinct callsigns, including QXE2217, QXE2421, QXE2117, QXE2352, QXE2187.