Apparatus

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sensors Mode-S transponder

A0A98A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N14153 · EMBRAER ERJ-145XR · operated by UNITED AIRLINES INC

Hex
A0A98A
Octal
50124612
Decimal
10,529,162
Country
US
Tail
N14153
Type
E45X
Broadcasting now · callsign UCA4289 · 24,100 ft
Flights observed
581
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Current position

A0A98A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0A98A 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
UCA4287 CommutAir 10 2026-06-08
UCA4863 - 7 2026-07-05
UCA4317 - 7 2026-07-07
UCA4986 - 6 2026-07-08
UCA4974 - 6 2026-07-08
UCA4946 CommutAir 6 2026-06-14
UCA4925 - 6 2026-07-08
UCA4814 CommutAir 6 2026-07-05
UCA4348 - 6 2026-07-05
UCA4340 - 6 2026-07-06
UCA4325 - 6 2026-07-10
UCA4318 - 6 2026-06-19
UCA4306 CommutAir 6 2026-05-28
UCA4980 CommutAir 5 2026-06-08
UCA4977 - 5 2026-07-10
UCA4942 - 5 2026-07-07
UCA4930 - 5 2026-07-08
UCA4923 - 5 2026-06-20
UCA4894 CommutAir 5 2026-06-20
UCA4861 - 5 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UCA4331 - Jul 14, 16:35 UTCJul 14, 17:20 UTC45m
2026-07-14 UCA4266 - Jul 14, 00:25 UTCJul 14, 01:00 UTC35m
2026-07-13 UCA4289 - Jul 13, 22:35 UTCJul 13, 23:20 UTC45m
2026-07-13 UCA4896 - Jul 13, 19:20 UTCJul 13, 20:10 UTC50m
2026-07-13 UCA4357 - Jul 13, 14:50 UTCJul 13, 15:50 UTC1h 0m
2026-07-13 UCA4892 IAH → LRD Jul 13, 03:50 UTCJul 13, 04:45 UTC55m
2026-07-13 UCA4339 ELP → IAH Jul 13, 00:27 UTCJul 13, 02:06 UTC1h 39m
2026-07-12 UCA4275 - Jul 12, 22:05 UTCJul 12, 23:20 UTC1h 15m
2026-07-12 UCA4909 - Jul 12, 16:35 UTCJul 12, 18:01 UTC1h 25m
2026-07-12 UCA4262 IAD → HSV Jul 12, 13:10 UTCJul 12, 14:40 UTC1h 30m
2026-07-11 UCA4283 - Jul 11, 20:05 UTCJul 11, 21:05 UTC1h 0m
2026-07-11 UCA4818 - Jul 11, 14:45 UTCJul 11, 15:40 UTC55m
2026-07-11 UCA4939 - Jul 11, 13:00 UTCJul 11, 13:45 UTC45m
2026-07-11 UCA4950 - Jul 11, 04:05 UTCJul 11, 04:40 UTC35m
2026-07-11 UCA4853 - Jul 11, 01:50 UTCJul 11, 02:55 UTC1h 5m
2026-07-11 UCA4853 SYR → IAD Jul 11, 01:47 UTCJul 11, 02:51 UTC1h 4m
2026-07-10 UCA4977 - Jul 10, 22:50 UTCJul 11, 00:05 UTC1h 15m
2026-07-10 UCA4977 IAD → SYR Jul 10, 22:18 UTCJul 10, 23:52 UTC1h 34m
2026-07-10 UCA4229 - Jul 10, 19:40 UTCJul 10, 21:05 UTC1h 25m
2026-07-10 UCA4288 - Jul 10, 16:50 UTCJul 10, 17:50 UTC1h 0m
2026-07-10 UCA4325 - Jul 10, 14:25 UTCJul 10, 15:40 UTC1h 15m
2026-07-10 UCA4325 TYS → IAD Jul 10, 14:25 UTCJul 10, 15:38 UTC1h 13m
2026-07-09 UCA3266 - Jul 9, 22:00 UTCJul 9, 22:45 UTC45m
2026-07-09 UCA4241 IAD → DAY Jul 9, 17:30 UTCJul 9, 18:30 UTC1h 0m
2026-07-09 UCA4241 IAD → DAY Jul 9, 17:04 UTCJul 9, 18:45 UTC1h 41m
2026-07-09 UCA4283 - Jul 9, 14:35 UTCJul 9, 15:40 UTC1h 5m
2026-07-09 UCA4818 - Jul 9, 12:25 UTCJul 9, 13:25 UTC1h 0m
2026-07-09 UCA4342 - Jul 9, 10:35 UTCJul 9, 11:00 UTC25m
2026-07-09 UCA4342 CHO → IAD Jul 9, 10:40 UTCJul 9, 10:58 UTC18m
2026-07-09 UCA4265 - Jul 9, 02:55 UTCJul 9, 03:15 UTC20m
2026-07-08 UCA4267 - Jul 8, 23:50 UTCJul 9, 00:50 UTC1h 0m
2026-07-08 UCA4274 IAD → DAY Jul 8, 21:35 UTCJul 8, 22:35 UTC1h 0m
2026-07-08 UCA4925 - Jul 8, 18:50 UTCJul 8, 20:10 UTC1h 20m
2026-07-08 UCA4930 IAD → MHT Jul 8, 16:40 UTCJul 8, 17:50 UTC1h 10m
2026-07-08 UCA4974 MDT → IAD Jul 8, 14:40 UTCJul 8, 15:10 UTC30m
2026-07-08 UCA4986 - Jul 8, 12:55 UTCJul 8, 13:20 UTC25m
2026-07-08 UCA4922 ROA → IAD Jul 8, 10:20 UTCJul 8, 11:00 UTC40m
2026-07-08 UCA4897 IAD → ROA Jul 8, 03:05 UTCJul 8, 03:40 UTC35m
2026-07-08 UCA4861 ROC → IAD Jul 8, 00:10 UTCJul 8, 01:05 UTC55m
2026-07-08 UCA4861 ROC → IAD Jul 8, 00:09 UTCJul 8, 01:04 UTC55m
2026-07-07 UCA4871 IAD → ROC Jul 7, 22:30 UTCJul 7, 23:15 UTC45m
2026-07-07 UCA4942 - Jul 7, 18:55 UTCJul 7, 20:00 UTC1h 5m
2026-07-07 UCA4942 ALB → IAD Jul 7, 19:04 UTCJul 7, 20:01 UTC57m
2026-07-07 UCA4317 - Jul 7, 17:00 UTCJul 7, 17:50 UTC50m
2026-07-07 UCA4317 IAD → ALB Jul 7, 17:00 UTCJul 7, 17:49 UTC49m
2026-07-07 UCA4857 - Jul 7, 13:40 UTCJul 7, 15:05 UTC1h 25m
2026-07-07 UCA4857 MHT → IAD Jul 7, 13:39 UTCJul 7, 15:07 UTC1h 28m
2026-07-07 UCA4932 IAD → MHT Jul 7, 11:40 UTCJul 7, 12:50 UTC1h 10m
2026-07-07 UCA4932 IAD → MHT Jul 7, 11:33 UTCJul 7, 12:56 UTC1h 23m
2026-07-07 UCA4861 ROC → IAD Jul 7, 00:30 UTCJul 7, 01:25 UTC55m

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 N14153 page for operator, model, and routing details .

Mode-S A0A98A frequently asked

What is Mode-S code A0A98A?
A0A98A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N14153.
Where is Mode-S A0A98A registered?
Mode-S code A0A98A 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 A0A98A broadcasting right now?
Yes. Mode-S A0A98A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0A98A, octal 50124612, decimal 10,529,162.
What flights does A0A98A operate?
Mode-S A0A98A has broadcast 20 distinct callsigns, including UCA4287, UCA4863, UCA4317, UCA4986, UCA4974.