Apparatus

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sensors Mode-S transponder

A0A9AC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N14162 · EMBRAER ERJ-145XR · operated by UNITED AIRLINES INC

Hex
A0A9AC
Octal
50124654
Decimal
10,529,196
Country
US
Tail
N14162
Type
E45X
No current signal · last broadcast 3h ago
Flights observed
270
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A0A9AC.

Country allocation

The ICAO 24-bit address A0A9AC 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
UCA4374 CommutAir 6 2026-05-02
UCA4361 CommutAir 5 2026-06-06
UCA4870 CommutAir 4 2026-06-05
UCA4837 CommutAir 4 2026-05-30
UCA4813 CommutAir 4 2026-05-02
UCA4366 CommutAir 4 2026-05-01
UCA4350 CommutAir 4 2026-06-07
UCA4294 CommutAir 4 2026-05-27
UCA4275 CommutAir 4 2026-06-06
UCA4257 CommutAir 4 2026-05-16
UCA4228 CommutAir 4 2026-05-29
UCA4989 CommutAir 3 2026-05-28
UCA4966 CommutAir 3 2026-04-26
UCA4964 CommutAir 3 2026-06-02
UCA4904 CommutAir 3 2026-04-27
UCA4889 CommutAir 3 2026-06-02
UCA4872 CommutAir 3 2026-05-27
UCA4851 CommutAir 3 2026-05-19
UCA4846 CommutAir 3 2026-05-23
UCA4835 CommutAir 3 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-07 UCA4984 IAH → AMA Jun 7, 23:35 UTCJun 7, 23:45 UTC10m
2026-06-07 UCA4375 BTR → IAH Jun 7, 21:45 UTCJun 7, 22:00 UTC15m
2026-06-07 UCA4375 BTR → IAH Jun 7, 21:49 UTCJun 7, 22:08 UTC19m
2026-06-07 UCA4237 IAH → MFE Jun 7, 17:30 UTCJun 7, 18:20 UTC50m
2026-06-07 UCA4237 IAH → MFE Jun 7, 17:25 UTCJun 7, 18:14 UTC49m
2026-06-07 UCA4350 PWM → IAD Jun 7, 15:50 UTCJun 7, 16:30 UTC40m
2026-06-06 UCA4275 CRP → IAH Jun 6, 20:25 UTCJun 6, 22:10 UTC1h 45m
2026-06-06 UCA4275 CRP → IAH Jun 6, 20:17 UTCJun 6, 22:06 UTC1h 49m
2026-06-06 UCA4361 PWM → IAD Jun 6, 17:44 UTCJun 6, 18:59 UTC1h 15m
2026-06-06 UCA4361 PWM → IAD Jun 6, 17:42 UTCJun 6, 19:21 UTC1h 39m
2026-06-06 UCA4224 AMA → IAH Jun 6, 14:20 UTCJun 6, 15:44 UTC1h 25m
2026-06-06 UCA4224 AMA → IAH Jun 6, 14:20 UTCJun 6, 15:43 UTC1h 23m
2026-06-06 UCA4839 IAH → AMA Jun 6, 01:45 UTCJun 6, 02:50 UTC1h 5m
2026-06-06 UCA4839 IAH → AMA Jun 6, 01:52 UTCJun 6, 03:02 UTC1h 10m
2026-06-05 UCA4870 HRL → IAH Jun 5, 23:05 UTCJun 5, 23:55 UTC50m
2026-06-05 UCA4870 HRL → IAH Jun 5, 22:45 UTCJun 5, 23:49 UTC1h 4m
2026-06-05 UCA4344 IAH → HRL Jun 5, 20:15 UTCJun 5, 21:05 UTC50m
2026-06-05 UCA4338 IAD → CMH Jun 5, 17:35 UTCJun 5, 19:00 UTC1h 25m
2026-06-05 UCA4338 IAD → CMH Jun 5, 17:27 UTCJun 5, 19:14 UTC1h 47m
2026-06-05 UCA4279 ORF → IAD Jun 5, 15:30 UTCJun 5, 16:45 UTC1h 15m
2026-06-05 UCA4279 ORF → IAD Jun 5, 15:20 UTCJun 5, 16:47 UTC1h 27m
2026-06-04 UCA4356 LFT → IAH Jun 4, 17:35 UTCJun 4, 18:30 UTC55m
2026-06-04 UCA4906 IAH → LFT Jun 4, 15:35 UTCJun 4, 15:55 UTC20m
2026-06-04 UCA4299 HSV → IAH Jun 4, 12:10 UTCJun 4, 13:45 UTC1h 35m
2026-06-04 UCA4292 IAH → HSV Jun 4, 01:15 UTCJun 4, 02:45 UTC1h 30m
2026-06-03 UCA4816 AMA → IAH Jun 3, 22:30 UTCJun 3, 23:40 UTC1h 10m
2026-06-03 UCA4821 IAH → AMA Jun 3, 15:00 UTCJun 3, 16:05 UTC1h 5m
2026-06-03 UCA4821 IAH → AMA Jun 3, 14:50 UTCJun 3, 16:14 UTC1h 24m
2026-06-02 UCA4905 HSV → IAH Jun 2, 20:40 UTCJun 2, 22:35 UTC1h 55m
2026-06-02 UCA4286 PWM → IAD Jun 2, 17:55 UTCJun 2, 19:25 UTC1h 30m
2026-06-02 UCA4889 ALB → IAD Jun 2, 15:55 UTCJun 2, 17:00 UTC1h 5m
2026-06-02 UCA4812 IAD → ALB Jun 2, 13:00 UTCJun 2, 14:00 UTC1h 0m
2026-06-02 UCA4244 OKC → IAH Jun 2, 10:25 UTCJun 2, 11:05 UTC40m
2026-06-02 UCA4964 IAD → MDT Jun 2, 02:44 UTCJun 2, 03:00 UTC16m
2026-06-02 UCA4964 IAD → MDT Jun 2, 02:35 UTCJun 2, 03:00 UTC25m
2026-06-01 UCA4238 IAD → BTV Jun 1, 23:55 UTCJun 2, 01:10 UTC1h 15m
2026-06-01 UCA4302 DEN → XNA Jun 1, 21:30 UTCJun 1, 22:40 UTC1h 10m
2026-06-01 UCA4268 MDT → IAD Jun 1, 19:00 UTCJun 1, 19:30 UTC30m
2026-06-01 UCA4372 IAD → MDT Jun 1, 17:05 UTCJun 1, 17:30 UTC25m
2026-06-01 UCA4296 MOB → IAH Jun 1, 14:30 UTCJun 1, 15:25 UTC55m
2026-06-01 UCA4296 MOB → IAH Jun 1, 14:38 UTCJun 1, 15:32 UTC54m
2026-06-01 UCA4327 IAD → SYR Jun 1, 12:25 UTCJun 1, 13:35 UTC1h 10m
2026-06-01 UCA4251 IAD → BUF Jun 1, 10:05 UTCJun 1, 10:50 UTC45m
2026-06-01 UCA4251 IAD → BUF Jun 1, 10:16 UTCJun 1, 10:49 UTC33m
2026-06-01 UCA4849 OKC → IAH Jun 1, 02:40 UTCJun 1, 03:20 UTC40m
2026-06-01 UCA4829 IAD → PWM Jun 1, 00:03 UTCJun 1, 00:59 UTC56m
2026-05-31 UCA4829 IAD → PWM May 31, 23:45 UTCJun 1, 01:00 UTC1h 15m
2026-05-31 UCA4932 IAD → MHT May 31, 21:35 UTCMay 31, 22:45 UTC1h 10m
2026-05-31 UCA4857 MHT → IAD May 31, 13:30 UTCMay 31, 14:45 UTC1h 15m
2026-05-31 UCA4267 IAD → PVD May 31, 00:00 UTCMay 31, 01:11 UTC1h 11m

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 N14162 page for operator, model, and routing details .

Mode-S A0A9AC frequently asked

What is Mode-S code A0A9AC?
A0A9AC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N14162.
Where is Mode-S A0A9AC registered?
Mode-S code A0A9AC 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 A0A9AC broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0A9AC, octal 50124654, decimal 10,529,196.
What flights does A0A9AC operate?
Mode-S A0A9AC has broadcast 20 distinct callsigns, including UCA4374, UCA4361, UCA4870, UCA4837, UCA4813.