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
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
588
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A05AAC.

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 CommutAir 9 2026-07-26
UCA4996 - 8 2026-07-16
UCA4965 CommutAir 8 2026-07-26
UCA4989 CommutAir 7 2026-06-23
UCA4911 - 7 2026-07-16
UCA4946 CommutAir 6 2026-07-24
UCA4942 - 6 2026-06-20
UCA4863 CommutAir 6 2026-07-18
UCA4324 CommutAir 6 2026-07-25
UCA4306 - 6 2026-07-17
UCA4298 CommutAir 6 2026-06-10
UCA4295 CommutAir 6 2026-06-23
UCA4929 - 5 2026-07-10
UCA4351 CommutAir 5 2026-07-24
UCA4329 - 5 2026-06-28
UCA4320 - 5 2026-06-28
UCA4318 - 5 2026-06-28
UCA4317 - 5 2026-06-20
UCA4285 - 5 2026-07-11
UCA4242 CommutAir 5 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UCA4932 IAD → MHT Jul 26, 22:05 UTCJul 26, 23:00 UTC55m
2026-07-26 UCA4824 IAD → HSV Jul 26, 19:15 UTCJul 26, 20:20 UTC1h 5m
2026-07-26 UCA4824 IAD → HSV Jul 26, 19:07 UTCJul 26, 20:29 UTC1h 22m
2026-07-26 UCA4241 BTV → IAD Jul 26, 17:15 UTCJul 26, 18:15 UTC1h 0m
2026-07-26 UCA4227 AVP → IAD Jul 26, 14:55 UTCJul 26, 15:40 UTC45m
2026-07-26 UCA4965 IAD → AVP Jul 26, 12:50 UTCJul 26, 13:25 UTC35m
2026-07-26 UCA4251 IAD → BUF Jul 26, 10:40 UTCJul 26, 11:25 UTC45m
2026-07-26 UCA4849 OKC → IAH Jul 26, 03:00 UTCJul 26, 03:40 UTC40m
2026-07-26 UCA4849 OKC → IAH Jul 26, 02:39 UTCJul 26, 03:42 UTC1h 3m
2026-07-26 UCA4829 IAD → PWM Jul 26, 00:05 UTCJul 26, 01:20 UTC1h 15m
2026-07-25 UCA4932 IAD → MHT Jul 25, 21:40 UTCJul 25, 22:55 UTC1h 15m
2026-07-25 UCA4938 SCE → IAD Jul 25, 19:05 UTCJul 25, 19:35 UTC30m
2026-07-25 UCA4253 DEN → SGF Jul 25, 17:15 UTCJul 25, 17:38 UTC23m
2026-07-25 UCA4253 DEN → SGF Jul 25, 17:10 UTCJul 25, 17:30 UTC20m
2026-07-25 UCA4324 IAD → BTV Jul 25, 15:10 UTCJul 25, 16:15 UTC1h 5m
2026-07-25 UCA4324 IAD → BTV Jul 25, 15:11 UTCJul 25, 16:11 UTC1h 0m
2026-07-25 UCA4236 IAD → RIC Jul 25, 12:56 UTCJul 25, 14:08 UTC1h 12m
2026-07-25 UCA4236 IAD → RIC Jul 25, 12:50 UTCJul 25, 14:05 UTC1h 15m
2026-07-24 UCA4351 HSV → IAD Jul 24, 23:10 UTCJul 25, 01:00 UTC1h 50m
2026-07-24 UCA4946 IAH → HSV Jul 24, 20:15 UTCJul 24, 21:40 UTC1h 25m
2026-07-24 UCA4378 PVD → IAD Jul 24, 17:30 UTCJul 24, 18:50 UTC1h 20m
2026-07-24 UCA4358 IAD → PVD Jul 24, 14:55 UTCJul 24, 16:20 UTC1h 25m
2026-07-24 UCA4358 IAD → PVD Jul 24, 15:06 UTCJul 24, 16:17 UTC1h 11m
2026-07-24 UCA4301 ICT → IAH Jul 24, 12:25 UTCJul 24, 13:25 UTC1h 0m
2026-07-24 UCA4296 MOB → IAH Jul 24, 01:45 UTCJul 24, 02:35 UTC50m
2026-07-23 UCA4247 PVD → IAD Jul 23, 23:25 UTCJul 24, 00:10 UTC45m
2026-07-23 UCA4341 PWM → IAD Jul 23, 21:40 UTCJul 23, 22:35 UTC55m
2026-07-23 UCA4374 LRD → IAH Jul 23, 19:15 UTCJul 23, 20:10 UTC55m
2026-07-23 UCA4904 IAH → LRD Jul 23, 17:25 UTCJul 23, 18:20 UTC55m
2026-07-23 UCA4904 IAH → LRD Jul 23, 17:29 UTCJul 23, 18:27 UTC58m
2026-07-23 UCA4269 PVD → IAD Jul 23, 14:25 UTCJul 23, 15:55 UTC1h 30m
2026-07-23 UCA4901 IAH → LBB Jul 23, 03:25 UTCJul 23, 04:55 UTC1h 30m
2026-07-23 UCA4259 IAH → HRL Jul 23, 00:55 UTCJul 23, 02:05 UTC1h 10m
2026-07-22 UCA4364 IAD → CAE Jul 22, 22:50 UTCJul 23, 00:05 UTC1h 15m
2026-07-22 UCA4229 XNA → IAH Jul 22, 19:50 UTCJul 22, 21:00 UTC1h 10m
2026-07-22 UCA4229 XNA → IAH Jul 22, 19:47 UTCJul 22, 21:06 UTC1h 19m
2026-07-22 UCA4288 IAD → YUL Jul 22, 17:35 UTCJul 22, 18:45 UTC1h 10m
2026-07-22 UCA4889 ALB → IAD Jul 22, 14:10 UTCJul 22, 15:15 UTC1h 5m
2026-07-22 UCA3265 IAD → ALB Jul 22, 00:20 UTCJul 22, 02:10 UTC1h 50m
2026-07-21 UCA4962 IAD → GSP Jul 21, 16:50 UTCJul 21, 17:45 UTC55m
2026-07-21 UCA4889 ALB → IAD Jul 21, 14:20 UTCJul 21, 15:25 UTC1h 5m
2026-07-21 UCA4321 IAD → ALB Jul 21, 03:20 UTCJul 21, 04:15 UTC55m
2026-07-20 UCA4351 HSV → IAD Jul 20, 23:15 UTCJul 21, 00:50 UTC1h 34m
2026-07-20 UCA4946 - Jul 20, 20:20 UTCJul 20, 21:50 UTC1h 30m
2026-07-20 UCA4946 IAH → HSV Jul 20, 20:22 UTCJul 20, 21:49 UTC1h 27m
2026-07-20 UCA4822 BHM → IAH Jul 20, 16:30 UTCJul 20, 17:45 UTC1h 15m
2026-07-20 UCA4231 SGF → IAH Jul 20, 12:50 UTCJul 20, 14:15 UTC1h 25m
2026-07-20 UCA4231 SGF → IAH Jul 20, 12:53 UTCJul 20, 14:16 UTC1h 23m
2026-07-19 UCA4816 AMA → IAH Jul 19, 20:25 UTCJul 19, 21:40 UTC1h 15m
2026-07-19 UCA4817 IAH → AMA Jul 19, 17:45 UTCJul 19, 18:45 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 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?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
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, UCA4996, UCA4965, UCA4989, UCA4911.