Apparatus

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sensors Mode-S transponder

A05AAC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N12160 · EMBRAER ERJ-145XR · operated by UNITED AIRLINES INC

Hex
A05AAC
Octal
50055254
Decimal
10,508,972
Country
US
Tail
N12160
Type
E45X
Broadcasting now · callsign UCA4306 · 31,975 ft
Flights observed
509
Distinct callsigns
20
Country
US
Last broadcast
13m ago

Current position

A05AAC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A05AAC 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
UCA4227 - 8 2026-06-22
UCA4989 CommutAir 7 2026-06-23
UCA4965 - 7 2026-06-22
UCA4942 - 6 2026-06-20
UCA4298 CommutAir 6 2026-06-10
UCA4295 CommutAir 6 2026-06-23
UCA4996 - 5 2026-06-27
UCA4929 - 5 2026-07-10
UCA4911 - 5 2026-06-27
UCA4329 - 5 2026-06-28
UCA4320 - 5 2026-06-28
UCA4318 - 5 2026-06-28
UCA4317 - 5 2026-06-20
UCA4306 - 5 2026-07-14
UCA4285 - 5 2026-07-11
UCA4242 CommutAir 5 2026-06-09
UCA4921 CommutAir 4 2026-05-15
UCA4879 - 4 2026-07-09
UCA4863 - 4 2026-07-13
UCA4814 CommutAir 4 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UCA4306 - Jul 14, 22:35 UTCJul 14, 23:00 UTC24m
2026-07-14 UCA4378 - Jul 14, 18:20 UTCJul 14, 19:50 UTC1h 30m
2026-07-14 UCA4358 - Jul 14, 16:20 UTCJul 14, 17:35 UTC1h 15m
2026-07-14 UCA4358 IAH → ICT Jul 14, 16:30 UTCJul 14, 17:38 UTC1h 8m
2026-07-13 UCA4863 - Jul 13, 12:35 UTCJul 13, 13:45 UTC1h 10m
2026-07-13 UCA4306 - Jul 13, 00:05 UTCJul 13, 01:25 UTC1h 20m
2026-07-12 UCA4379 - Jul 12, 21:45 UTCJul 12, 22:45 UTC1h 0m
2026-07-12 UCA4366 - Jul 12, 19:45 UTCJul 12, 20:45 UTC1h 0m
2026-07-12 UCA4237 - Jul 12, 17:35 UTCJul 12, 18:25 UTC50m
2026-07-12 UCA4237 BTR → IAH Jul 12, 17:25 UTCJul 12, 18:23 UTC58m
2026-07-12 UCA4350 - Jul 12, 15:20 UTCJul 12, 16:10 UTC50m
2026-07-12 UCA4350 IAH → BTR Jul 12, 15:27 UTCJul 12, 16:05 UTC38m
2026-07-12 UCA4863 - Jul 12, 12:10 UTCJul 12, 13:30 UTC1h 20m
2026-07-11 UCA4306 - Jul 11, 22:15 UTCJul 11, 23:20 UTC1h 5m
2026-07-11 UCA4859 - Jul 11, 19:40 UTCJul 11, 20:55 UTC1h 15m
2026-07-11 UCA4354 - Jul 11, 17:40 UTCJul 11, 18:45 UTC1h 5m
2026-07-11 UCA4357 - Jul 11, 14:55 UTCJul 11, 16:30 UTC1h 35m
2026-07-11 UCA4285 - Jul 11, 00:15 UTCJul 11, 01:00 UTC45m
2026-07-11 UCA4285 IAH → LRD Jul 11, 00:12 UTCJul 11, 01:20 UTC1h 8m
2026-07-10 UCA4365 - Jul 10, 21:50 UTCJul 10, 22:45 UTC55m
2026-07-10 UCA4365 BRO → IAH Jul 10, 22:03 UTCJul 10, 22:44 UTC41m
2026-07-10 UCA4929 - Jul 10, 19:50 UTCJul 10, 20:35 UTC45m
2026-07-10 UCA4929 IAH → BRO Jul 10, 19:54 UTCJul 10, 20:39 UTC45m
2026-07-10 UCA4356 - Jul 10, 17:10 UTCJul 10, 17:55 UTC45m
2026-07-10 UCA4906 - Jul 10, 15:35 UTCJul 10, 16:05 UTC30m
2026-07-09 UCA4893 - Jul 9, 22:05 UTCJul 9, 23:30 UTC1h 25m
2026-07-09 UCA4879 - Jul 9, 18:30 UTCJul 9, 20:05 UTC1h 35m
2026-07-09 UCA4878 - Jul 9, 16:20 UTCJul 9, 17:25 UTC1h 5m
2026-07-09 UCA4312 - Jul 9, 01:35 UTCJul 9, 02:30 UTC55m
2026-07-09 UCA4312 IAH → MOB Jul 9, 01:43 UTCJul 9, 02:32 UTC49m
2026-07-08 UCA4978 - Jul 8, 22:35 UTCJul 8, 23:50 UTC1h 15m
2026-07-08 UCA4280 - Jul 8, 19:30 UTCJul 8, 20:35 UTC1h 5m
2026-07-08 UCA4830 - Jul 8, 17:15 UTCJul 8, 18:10 UTC55m
2026-07-08 UCA4830 LIT → IAH Jul 8, 17:13 UTCJul 8, 18:08 UTC55m
2026-07-08 UCA4371 - Jul 8, 15:05 UTCJul 8, 15:50 UTC45m
2026-07-08 UCA4371 IAH → LIT Jul 8, 15:00 UTCJul 8, 15:59 UTC59m
2026-07-08 UCA4255 - Jul 8, 11:35 UTCJul 8, 13:00 UTC1h 25m
2026-07-07 UCA4902 - Jul 7, 19:50 UTCJul 7, 21:20 UTC1h 30m
2026-07-07 UCA4822 - Jul 7, 16:30 UTCJul 7, 17:55 UTC1h 25m
2026-07-07 UCA4822 BHM → IAH Jul 7, 16:36 UTCJul 7, 17:52 UTC1h 16m
2026-07-07 UCA4231 - Jul 7, 12:45 UTCJul 7, 14:05 UTC1h 20m
2026-07-06 UCA4905 - Jul 6, 20:00 UTCJul 6, 21:30 UTC1h 30m
2026-07-06 UCA4286 IAD → HSV Jul 6, 17:25 UTCJul 6, 18:55 UTC1h 30m
2026-07-06 UCA4332 ROA → IAD Jul 6, 14:35 UTCJul 6, 15:25 UTC50m
2026-07-06 UCA4368 IAD → ROA Jul 6, 12:51 UTCJul 6, 13:20 UTC29m
2026-07-06 UCA4368 IAD → ROA Jul 6, 12:45 UTCJul 6, 13:20 UTC35m
2026-07-05 UCA4848 - Jul 5, 13:00 UTCJul 5, 14:05 UTC1h 5m
2026-07-05 UCA3264 - Jul 5, 01:50 UTCJul 5, 02:55 UTC1h 5m
2026-07-05 UCA3264 ORF → TYS Jul 5, 01:18 UTCJul 5, 03:19 UTC2h 1m
2026-07-04 UCA4308 IAD → ORF Jul 4, 22:53 UTCJul 4, 23:19 UTC26m

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 N12160 page for operator, model, and routing details .

Mode-S A05AAC frequently asked

What is Mode-S code A05AAC?
A05AAC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N12160.
Where is Mode-S A05AAC registered?
Mode-S code A05AAC 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 A05AAC broadcasting right now?
Yes. Mode-S A05AAC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A05AAC, octal 50055254, decimal 10,508,972.
What flights does A05AAC operate?
Mode-S A05AAC has broadcast 20 distinct callsigns, including UCA4227, UCA4989, UCA4965, UCA4942, UCA4298.