Apparatus

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sensors Mode-S transponder

A05646

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N12010 · BOEING 787-10 Dreamliner · operated by UNITED AIRLINES INC

Hex
A05646
Octal
50053106
Decimal
10,507,846
Country
US
Tail
N12010
Type
B78X
Broadcasting now · callsign UAL907 · 36,975 ft
Flights observed
235
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A05646 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A05646 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
UAL945 - 18 2026-06-20
UAL944 - 14 2026-06-19
UAL906 - 14 2026-07-13
UAL972 - 12 2026-06-23
UAL907 - 12 2026-07-14
UAL995 - 10 2026-06-23
UAL218 - 9 2026-07-11
UAL986 - 8 2026-07-02
UAL882 - 8 2026-06-30
UAL973 - 7 2026-06-19
UAL844 - 7 2026-07-10
UAL423 - 7 2026-07-03
UAL39 - 7 2026-06-24
UAL987 - 6 2026-07-02
UAL422 - 6 2026-07-02
UAL2303 United Airlines 6 2026-04-30
UAL219 - 6 2026-07-10
UAL125 United Airlines 6 2026-05-31
UAL994 United Airlines 5 2026-06-18
UAL881 - 5 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UAL907 - Jul 14, 00:25 UTCJul 14, 01:30 UTC1h 5m
2026-07-13 UAL906 FRA → ORD Jul 13, 11:00 UTCJul 13, 19:05 UTC8h 5m
2026-07-13 UAL907 - Jul 13, 00:01 UTCJul 13, 07:50 UTC7h 50m
2026-07-11 UAL218 - Jul 11, 02:20 UTCJul 11, 09:45 UTC7h 25m
2026-07-10 UAL219 - Jul 10, 15:00 UTCJul 10, 23:15 UTC8h 16m
2026-07-10 UAL844 - Jul 10, 01:40 UTCJul 10, 11:25 UTC9h 45m
2026-07-09 UAL845 - Jul 9, 04:45 UTCJul 9, 14:00 UTC9h 15m
2026-07-08 UAL415 MXP → ORD Jul 8, 13:40 UTCJul 8, 22:40 UTC9h 0m
2026-07-08 UAL416 - Jul 8, 03:20 UTCJul 8, 11:25 UTC8h 5m
2026-07-05 UAL906 FRA → ORD Jul 5, 12:40 UTCJul 5, 21:05 UTC8h 25m
2026-07-05 UAL907 ORD → FRA Jul 5, 03:00 UTCJul 5, 10:20 UTC7h 20m
2026-07-04 UAL906 FRA → ORD Jul 4, 13:15 UTCJul 4, 23:05 UTC9h 50m
2026-07-04 UAL906 FRA → ORD Jul 4, 12:59 UTCJul 4, 22:53 UTC9h 54m
2026-07-04 UAL907 ORD → FRA Jul 4, 08:50 UTCJul 4, 10:40 UTC1h 50m
2026-07-04 UAL907 ORD → FRA Jul 4, 03:25 UTCJul 4, 05:35 UTC2h 10m
2026-07-03 UAL423 ATH → ORD Jul 3, 11:15 UTCJul 3, 22:00 UTC10h 45m
2026-07-02 UAL422 - Jul 2, 23:15 UTCJul 2, 23:30 UTC15m
2026-07-02 UAL422 ORD → ATH Jul 2, 23:13 UTCJul 3, 08:14 UTC9h 1m
2026-07-02 UAL986 ORD → ORD Jul 2, 19:35 UTCJul 2, 19:40 UTC5m
2026-07-02 UAL986 - Jul 2, 11:15 UTCJul 2, 19:40 UTC8h 25m
2026-07-02 UAL986 CDG → ORD Jul 2, 11:19 UTCJul 2, 19:16 UTC7h 57m
2026-07-02 UAL987 ORD → CDG Jul 2, 01:55 UTCJul 2, 09:10 UTC7h 15m
2026-07-02 UAL987 ORD → CDG Jul 2, 01:52 UTCJul 2, 09:07 UTC7h 15m
2026-07-01 UAL906 FRA → ORD Jul 1, 11:30 UTCJul 1, 20:05 UTC8h 35m
2026-07-01 UAL906 FRA → ORD Jul 1, 11:19 UTCJul 1, 19:47 UTC8h 28m
2026-07-01 UAL907 ORD → FRA Jul 1, 00:50 UTCJul 1, 08:30 UTC7h 40m
2026-06-30 UAL882 HND → ORD Jun 30, 10:10 UTCJun 30, 21:05 UTC10h 55m
2026-06-29 UAL881 ORD → HND Jun 29, 20:01 UTCJun 30, 07:37 UTC11h 36m
2026-06-29 UAL881 ORD → HND Jun 29, 20:04 UTCJun 30, 07:45 UTC11h 41m
2026-06-28 UAL906 FRA → ORD Jun 28, 11:19 UTCJun 28, 19:40 UTC8h 20m
2026-06-28 UAL907 ORD → FRA Jun 28, 00:04 UTCJun 28, 07:50 UTC7h 45m
2026-06-27 UAL906 FRA → ORD Jun 27, 11:50 UTCJun 27, 20:14 UTC8h 25m
2026-06-27 UAL906 FRA → ORD Jun 27, 10:59 UTCJun 27, 19:58 UTC8h 59m
2026-06-27 UAL907 ORD → FRA Jun 27, 00:18 UTCJun 27, 07:53 UTC7h 35m
2026-06-27 UAL907 ORD → FRA Jun 27, 00:20 UTCJun 27, 02:29 UTC2h 10m
2026-06-26 UAL906 FRA → ORD Jun 26, 12:14 UTCJun 26, 20:29 UTC8h 15m
2026-06-26 UAL906 FRA → ORD Jun 26, 11:49 UTCJun 26, 20:12 UTC8h 23m
2026-06-26 UAL907 ORD → FRA Jun 26, 02:00 UTCJun 26, 09:35 UTC7h 35m
2026-06-26 UAL907 ORD → FRA Jun 26, 01:52 UTCJun 26, 09:28 UTC7h 36m
2026-06-25 UAL882 HND → ORD Jun 25, 08:34 UTCJun 25, 19:39 UTC11h 5m
2026-06-24 UAL39 - Jun 24, 19:00 UTCJun 25, 05:55 UTC10h 55m
2026-06-23 UAL2238 - Jun 23, 21:45 UTCJun 24, 02:45 UTC5h 0m
2026-06-23 UAL995 - Jun 23, 09:59 UTCJun 23, 17:34 UTC7h 35m
2026-06-23 UAL972 ORD → BRU Jun 23, 00:12 UTCJun 23, 06:56 UTC6h 44m
2026-06-22 UAL972 - Jun 22, 23:50 UTCJun 23, 06:59 UTC7h 10m
2026-06-20 UAL945 - Jun 20, 07:14 UTCJun 20, 07:29 UTC15m
2026-06-20 UAL945 FRA → ORD Jun 20, 07:08 UTCJun 20, 15:34 UTC8h 26m
2026-06-20 UAL945 FRA → ORD Jun 20, 07:08 UTCJun 20, 15:23 UTC8h 15m
2026-06-19 UAL944 ORD → FRA Jun 19, 20:40 UTCJun 20, 04:20 UTC7h 40m
2026-06-19 UAL973 BRU → ORD Jun 19, 08:54 UTCJun 19, 16:49 UTC7h 55m

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 N12010 page for operator, model, and routing details .

Mode-S A05646 frequently asked

What is Mode-S code A05646?
A05646 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N12010.
Where is Mode-S A05646 registered?
Mode-S code A05646 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 A05646 broadcasting right now?
Yes. Mode-S A05646 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A05646, octal 50053106, decimal 10,507,846.
What flights does A05646 operate?
Mode-S A05646 has broadcast 20 distinct callsigns, including UAL945, UAL944, UAL906, UAL972, UAL907.