Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A0F869

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N16147 · EMBRAER ERJ-145XR · operated by UNITED AIRLINES INC

Hex
A0F869
Octal
50174151
Decimal
10,549,353
Country
US
Tail
N16147
Type
E45X
No current signal · last broadcast 8h ago
Flights observed
460
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A0F869.

Country allocation

The ICAO 24-bit address A0F869 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
UCA4270 - 7 2026-07-13
UCA4814 CommutAir 6 2026-06-23
UCA4287 CommutAir 6 2026-06-04
UCA4958 - 5 2026-07-07
UCA4823 - 5 2026-07-12
UCA4313 - 5 2026-07-06
UCA4300 - 5 2026-06-23
UCA4271 - 5 2026-06-30
UCA3263 - 5 2026-06-26
UCA4986 - 4 2026-07-09
UCA4963 - 4 2026-07-05
UCA4961 - 4 2026-07-07
UCA4942 - 4 2026-07-12
UCA4939 - 4 2026-06-18
UCA4937 CommutAir 4 2026-04-16
UCA4848 - 4 2026-07-13
UCA4847 CommutAir 4 2026-06-19
UCA4815 - 4 2026-06-18
UCA4348 - 4 2026-06-23
UCA4340 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 UCA4914 IAD → TYS Jul 13, 23:09 UTCJul 14, 00:12 UTC1h 3m
2026-07-13 UCA4914 - Jul 13, 23:05 UTCJul 14, 00:10 UTC1h 5m
2026-07-13 UCA4848 - Jul 13, 17:45 UTCJul 13, 19:00 UTC1h 15m
2026-07-13 UCA4257 - Jul 13, 13:10 UTCJul 13, 14:15 UTC1h 5m
2026-07-13 UCA4270 - Jul 13, 00:25 UTCJul 13, 01:10 UTC45m
2026-07-12 UCA4823 IAD → BUF Jul 12, 22:45 UTCJul 12, 23:30 UTC45m
2026-07-12 UCA4942 - Jul 12, 19:15 UTCJul 12, 20:25 UTC1h 10m
2026-07-12 UCA4317 - Jul 12, 17:01 UTCJul 12, 18:01 UTC1h 0m
2026-07-12 UCA4857 - Jul 12, 13:35 UTCJul 12, 14:55 UTC1h 20m
2026-07-12 UCA4270 IAD → MHT Jul 12, 04:35 UTCJul 12, 05:45 UTC1h 10m
2026-07-12 UCA4238 - Jul 12, 00:40 UTCJul 12, 02:30 UTC1h 50m
2026-07-12 UCA4238 BTV → IAD Jul 12, 00:15 UTCJul 12, 02:29 UTC2h 14m
2026-07-11 UCA4302 IAD → BTV Jul 11, 21:50 UTCJul 11, 22:55 UTC1h 5m
2026-07-11 UCA4302 IAD → BTV Jul 11, 21:42 UTCJul 11, 22:56 UTC1h 14m
2026-07-11 UCA4942 - Jul 11, 19:05 UTCJul 11, 20:10 UTC1h 5m
2026-07-11 UCA4942 ALB → IAD Jul 11, 19:04 UTCJul 11, 20:09 UTC1h 5m
2026-07-11 UCA4317 - Jul 11, 16:55 UTCJul 11, 17:45 UTC50m
2026-07-11 UCA4840 - Jul 11, 14:35 UTCJul 11, 15:30 UTC55m
2026-07-11 UCA4840 SYR → IAD Jul 11, 14:47 UTCJul 11, 15:27 UTC40m
2026-07-11 UCA4370 - Jul 11, 13:00 UTCJul 11, 13:40 UTC40m
2026-07-11 UCA4810 - Jul 11, 00:10 UTCJul 11, 00:55 UTC45m
2026-07-10 UCA4308 IAD → ORF Jul 10, 22:40 UTCJul 10, 23:15 UTC35m
2026-07-10 UCA4308 IAD → ORF Jul 10, 22:08 UTCJul 10, 23:16 UTC1h 8m
2026-07-10 UCA4251 - Jul 10, 15:15 UTCJul 10, 16:00 UTC45m
2026-07-10 UCA4849 - Jul 10, 13:35 UTCJul 10, 14:10 UTC35m
2026-07-10 UCA4829 - Jul 10, 02:50 UTCJul 10, 04:15 UTC1h 25m
2026-07-10 UCA4829 MHT → IAD Jul 10, 02:56 UTCJul 10, 04:09 UTC1h 13m
2026-07-10 UCA4932 IAD → MHT Jul 10, 00:35 UTCJul 10, 01:55 UTC1h 20m
2026-07-09 UCA4974 - Jul 9, 14:35 UTCJul 9, 15:00 UTC25m
2026-07-09 UCA4986 - Jul 9, 12:55 UTCJul 9, 13:20 UTC25m
2026-07-09 UCA4311 - Jul 9, 09:50 UTCJul 9, 11:00 UTC1h 10m
2026-07-09 UCA4311 TYS → IAD Jul 9, 10:00 UTCJul 9, 10:59 UTC59m
2026-07-09 UCA4304 - Jul 9, 02:40 UTCJul 9, 03:45 UTC1h 5m
2026-07-09 UCA4304 IAD → TYS Jul 9, 02:38 UTCJul 9, 03:42 UTC1h 4m
2026-07-09 UCA4861 ROC → IAD Jul 9, 00:10 UTCJul 9, 01:05 UTC55m
2026-07-09 UCA4861 ROC → IAD Jul 9, 00:09 UTCJul 9, 01:06 UTC57m
2026-07-08 UCA4871 - Jul 8, 22:40 UTCJul 8, 23:00 UTC20m
2026-07-08 UCA4871 - Jul 8, 22:15 UTCJul 8, 22:35 UTC20m
2026-07-08 UCA4362 - Jul 8, 19:10 UTCJul 8, 20:10 UTC1h 0m
2026-07-08 UCA4360 - Jul 8, 17:05 UTCJul 8, 17:50 UTC45m
2026-07-08 UCA4834 - Jul 8, 15:05 UTCJul 8, 15:40 UTC35m
2026-07-08 UCA4319 - Jul 8, 13:00 UTCJul 8, 13:20 UTC20m
2026-07-08 UCA4319 IAD → SCE Jul 8, 13:01 UTCJul 8, 13:29 UTC28m
2026-07-08 UCA4244 - Jul 8, 10:20 UTCJul 8, 10:50 UTC30m
2026-07-08 UCA4964 IAD → MDT Jul 8, 02:52 UTCJul 8, 03:15 UTC23m
2026-07-08 UCA4882 - Jul 8, 00:10 UTCJul 8, 00:40 UTC30m
2026-07-08 UCA4882 MDT → IAD Jul 8, 00:12 UTCJul 8, 00:41 UTC29m
2026-07-07 UCA4250 - Jul 7, 21:55 UTCJul 7, 22:20 UTC25m
2026-07-07 UCA4230 - Jul 7, 19:40 UTCJul 7, 20:25 UTC45m
2026-07-07 UCA4234 - Jul 7, 17:40 UTCJul 7, 18:15 UTC35m

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 N16147 page for operator, model, and routing details .

Mode-S A0F869 frequently asked

What is Mode-S code A0F869?
A0F869 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N16147.
Where is Mode-S A0F869 registered?
Mode-S code A0F869 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 A0F869 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0F869, octal 50174151, decimal 10,549,353.
What flights does A0F869 operate?
Mode-S A0F869 has broadcast 20 distinct callsigns, including UCA4270, UCA4814, UCA4287, UCA4958, UCA4823.