Apparatus

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sensors Mode-S transponder

A0A98F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N14158 · EMBRAER ERJ-145XR · operated by UNITED AIRLINES INC

Hex
A0A98F
Octal
50124617
Decimal
10,529,167
Country
US
Tail
N14158
Type
E45X
Broadcasting now · callsign UCA4849 · 5,100 ft
Flights observed
603
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

A0A98F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0A98F 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
UCA4319 CommutAir 9 2026-06-01
UCA4247 - 8 2026-06-30
UCA4962 CommutAir 7 2026-05-24
UCA4938 - 7 2026-06-17
UCA4328 CommutAir 7 2026-06-03
UCA4276 - 7 2026-07-10
UCA4268 CommutAir 7 2026-06-04
UCA4959 CommutAir 6 2026-05-24
UCA4815 CommutAir 6 2026-05-26
UCA4314 - 6 2026-07-12
UCA4313 CommutAir 6 2026-05-26
UCA4277 - 6 2026-07-10
UCA4258 - 6 2026-06-23
UCA4253 - 6 2026-06-17
UCA4238 - 6 2026-07-13
UCA4964 CommutAir 5 2026-05-20
UCA4894 CommutAir 5 2026-06-22
UCA4872 CommutAir 5 2026-05-17
UCA4864 - 5 2026-06-18
UCA4860 - 5 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 UCA4238 - Jul 13, 23:50 UTCJul 14, 01:00 UTC1h 10m
2026-07-13 UCA4302 IAD → BTV Jul 13, 21:40 UTCJul 13, 22:55 UTC1h 15m
2026-07-13 UCA4302 IAD → BTV Jul 13, 21:42 UTCJul 13, 23:07 UTC1h 25m
2026-07-13 UCA4925 - Jul 13, 19:00 UTCJul 13, 20:20 UTC1h 20m
2026-07-13 UCA4925 MHT → IAD Jul 13, 18:53 UTCJul 13, 20:17 UTC1h 24m
2026-07-13 UCA4930 - Jul 13, 16:25 UTCJul 13, 17:40 UTC1h 15m
2026-07-13 N14889 - Jul 13, 14:05 UTCJul 13, 15:10 UTC1h 5m
2026-07-13 UCA4321 - Jul 13, 03:15 UTCJul 13, 04:05 UTC50m
2026-07-13 UCA4954 - Jul 13, 01:30 UTCJul 13, 02:10 UTC40m
2026-07-12 UCA4945 IAD → ITH Jul 12, 23:53 UTCJul 13, 00:37 UTC44m
2026-07-12 UCA4945 - Jul 12, 23:45 UTCJul 13, 00:30 UTC45m
2026-07-12 UCA4314 - Jul 12, 18:01 UTCJul 12, 20:15 UTC2h 15m
2026-07-12 UCA4314 MOB → IAD Jul 12, 18:02 UTCJul 12, 20:11 UTC2h 9m
2026-07-12 UCA4369 - Jul 12, 15:35 UTCJul 12, 16:35 UTC1h 0m
2026-07-12 UCA4917 - Jul 12, 11:35 UTCJul 12, 13:10 UTC1h 35m
2026-07-11 UCA4987 - Jul 11, 20:40 UTCJul 11, 22:01 UTC1h 20m
2026-07-10 UCA4353 - Jul 10, 23:45 UTCJul 11, 00:40 UTC55m
2026-07-10 UCA4278 - Jul 10, 22:00 UTCJul 10, 22:45 UTC45m
2026-07-10 UCA4277 - Jul 10, 18:25 UTCJul 10, 20:15 UTC1h 50m
2026-07-10 UCA4276 - Jul 10, 15:15 UTCJul 10, 17:15 UTC2h 0m
2026-07-10 UCA4276 IAH → PBC Jul 10, 15:26 UTCJul 10, 17:07 UTC1h 41m
2026-07-10 UCA4301 - Jul 10, 12:20 UTCJul 10, 13:20 UTC1h 0m
2026-07-10 UCA4301 LIT → IAH Jul 10, 12:21 UTCJul 10, 13:20 UTC59m
2026-07-10 UCA4296 - Jul 10, 01:20 UTCJul 10, 02:10 UTC50m
2026-07-09 UCA4246 - Jul 9, 22:20 UTCJul 9, 23:25 UTC1h 5m
2026-07-09 UCA4273 - Jul 9, 20:15 UTCJul 9, 21:10 UTC55m
2026-07-09 UCA4273 IAH → GPT Jul 9, 20:14 UTCJul 9, 21:13 UTC59m
2026-07-09 UCA4851 - Jul 9, 16:40 UTCJul 9, 18:10 UTC1h 30m
2026-07-09 UCA4225 - Jul 9, 14:20 UTCJul 9, 15:35 UTC1h 15m
2026-07-09 UCA4917 - Jul 9, 11:40 UTCJul 9, 13:00 UTC1h 20m
2026-07-08 UCA4855 - Jul 8, 23:30 UTCJul 9, 00:45 UTC1h 15m
2026-07-08 UCA4326 - Jul 8, 19:25 UTCJul 8, 20:15 UTC50m
2026-07-08 UCA4326 BTR → IAH Jul 8, 19:18 UTCJul 8, 20:13 UTC55m
2026-07-08 UCA4336 - Jul 8, 17:45 UTCJul 8, 18:30 UTC45m
2026-07-07 UCA4859 - Jul 7, 19:35 UTCJul 7, 20:40 UTC1h 5m
2026-07-07 UCA4354 - Jul 7, 17:25 UTCJul 7, 18:35 UTC1h 10m
2026-07-07 UCA4331 IAD → CMH Jul 7, 14:40 UTCJul 7, 15:20 UTC40m
2026-07-07 UCA4331 IAD → CMH Jul 7, 14:45 UTCJul 7, 15:16 UTC31m
2026-07-06 UCA4266 - Jul 6, 22:45 UTCJul 6, 23:10 UTC25m
2026-07-06 UCA4835 - Jul 6, 19:20 UTCJul 6, 20:10 UTC50m
2026-07-06 UCA4298 - Jul 6, 17:30 UTCJul 6, 18:15 UTC45m
2026-07-06 UCA4837 - Jul 6, 13:05 UTCJul 6, 13:45 UTC40m
2026-07-06 UCA4837 GPT → IAH Jul 6, 13:05 UTCJul 6, 14:16 UTC1h 11m
2026-07-06 UCA4337 - Jul 6, 01:40 UTCJul 6, 02:35 UTC55m
2026-07-05 UCA4289 - Jul 5, 19:30 UTCJul 5, 20:20 UTC50m
2026-07-05 UCA4896 - Jul 5, 17:25 UTCJul 5, 18:10 UTC45m
2026-07-05 UCA4282 - Jul 5, 14:35 UTCJul 5, 15:25 UTC50m
2026-07-04 UCA4334 - Jul 4, 00:05 UTCJul 4, 00:50 UTC45m
2026-07-04 UCA4334 IAH → JAN Jul 4, 00:12 UTCJul 4, 01:06 UTC54m
2026-07-03 UCA4365 - Jul 3, 22:00 UTCJul 3, 22:55 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 N14158 page for operator, model, and routing details .

Mode-S A0A98F frequently asked

What is Mode-S code A0A98F?
A0A98F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N14158.
Where is Mode-S A0A98F registered?
Mode-S code A0A98F 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 A0A98F broadcasting right now?
Yes. Mode-S A0A98F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0A98F, octal 50124617, decimal 10,529,167.
What flights does A0A98F operate?
Mode-S A0A98F has broadcast 20 distinct callsigns, including UCA4319, UCA4247, UCA4962, UCA4938, UCA4328.