Apparatus

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sensors Mode-S transponder

A5ADF1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N465UA · AIRBUS A-320 · operated by UNITED AIRLINES INC

Hex
A5ADF1
Octal
51326761
Decimal
10,857,969
Country
US
Tail
N465UA
Type
A320
Transponder active on ground
Flights observed
488
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:30 UTC

Last known position

Most recent position reported by Mode-S A5ADF1.

Country allocation

The ICAO 24-bit address A5ADF1 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
UAL1476 - 6 2026-07-14
UAL790 - 5 2026-06-28
UAL561 - 5 2026-07-08
UAL358 - 5 2026-07-12
UAL1842 - 5 2026-07-11
UAL1178 - 5 2026-07-15
UAL1062 United Airlines 5 2026-06-05
UAL671 - 4 2026-07-03
UAL649 United Airlines 4 2026-06-20
UAL325 - 4 2026-06-27
UAL2807 - 4 2026-07-14
UAL2413 United Airlines 4 2026-06-05
UAL2363 United Airlines 4 2026-07-20
UAL2259 United Airlines 4 2026-05-15
UAL2137 - 4 2026-07-16
UAL2051 - 4 2026-06-28
UAL1936 United Airlines 4 2026-04-23
UAL1809 - 4 2026-06-20
UAL1528 United Airlines 4 2026-05-15
UAL1508 United Airlines 4 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL3882 FTW → SFO Jul 26, 17:30 UTCJul 26, 19:30 UTC2h 0m
2026-07-24 UAL1007 ORD → ALB Jul 24, 04:15 UTCJul 24, 05:50 UTC1h 35m
2026-07-24 UAL2164 LAX → ORD Jul 24, 01:05 UTCJul 24, 02:50 UTC1h 45m
2026-07-23 UAL1265 DEN → SFO Jul 23, 21:15 UTCJul 23, 22:45 UTC1h 30m
2026-07-23 UAL1613 EWR → FLL Jul 23, 18:40 UTCJul 23, 20:10 UTC1h 30m
2026-07-23 UAL2265 IAH → SFO Jul 23, 16:10 UTCJul 23, 17:25 UTC1h 15m
2026-07-23 UAL2340 ORD → MCO Jul 23, 14:00 UTCJul 23, 14:45 UTC45m
2026-07-23 UAL2866 LAX → CLE Jul 23, 04:55 UTCJul 23, 05:40 UTC45m
2026-07-22 UAL436 SFO → BWI Jul 22, 21:40 UTCJul 23, 02:50 UTC5h 10m
2026-07-22 UAL2836 SFO → PIT Jul 22, 15:40 UTCJul 22, 20:00 UTC4h 20m
2026-07-22 UAL2718 PDX → SFO Jul 22, 13:35 UTCJul 22, 14:10 UTC35m
2026-07-22 UAL1334 EWR → PBI Jul 22, 04:15 UTCJul 22, 05:15 UTC1h 0m
2026-07-21 UAL357 IAD → SFO Jul 21, 23:35 UTCJul 22, 00:25 UTC50m
2026-07-21 UAL626 SFO → BUR Jul 21, 21:20 UTCJul 21, 22:10 UTC50m
2026-07-21 UAL1482 SAT → SFO Jul 21, 18:20 UTCJul 21, 20:10 UTC1h 50m
2026-07-21 UAL1708 SFO → SEA Jul 21, 14:18 UTCJul 21, 15:40 UTC1h 22m
2026-07-21 UAL1708 SFO → SEA Jul 21, 14:10 UTCJul 21, 15:40 UTC1h 30m
2026-07-21 UAL292 EWR → SEA Jul 21, 02:45 UTCJul 21, 05:55 UTC3h 10m
2026-07-20 UAL1116 BOS → ORD Jul 20, 20:42 UTCJul 21, 00:08 UTC3h 26m
2026-07-20 UAL1116 BOS → ORD Jul 20, 20:50 UTCJul 21, 00:10 UTC3h 20m
2026-07-20 UAL2386 EWR → TPA Jul 20, 18:35 UTCJul 20, 19:30 UTC55m
2026-07-20 UAL2363 PHL → ORD Jul 20, 16:10 UTCJul 20, 17:00 UTC50m
2026-07-20 UAL335 DEN → IAD Jul 20, 13:05 UTCJul 20, 14:20 UTC1h 15m
2026-07-20 UAL1508 IAD → EWR Jul 20, 06:45 UTCJul 20, 07:45 UTC1h 0m
2026-07-20 UAL1508 IAD → EWR Jul 20, 04:30 UTCJul 20, 05:40 UTC1h 10m
2026-07-19 UAL2764 IAD → EWR Jul 19, 23:35 UTCJul 20, 00:30 UTC55m
2026-07-19 UAL1453 BUR → SFO Jul 19, 21:40 UTCJul 19, 22:35 UTC55m
2026-07-19 UAL2154 ORD → TPA Jul 19, 17:40 UTCJul 19, 19:40 UTC2h 0m
2026-07-19 UAL384 - Jul 19, 13:15 UTCJul 19, 15:35 UTC2h 20m
2026-07-19 UAL1470 DEN → LEX Jul 19, 01:20 UTCJul 19, 03:30 UTC2h 10m
2026-07-18 UAL8210 DEN → DEN Jul 18, 20:05 UTCJul 18, 23:50 UTC3h 45m
2026-07-18 UAL2838 MIQ → DEN Jul 18, 17:10 UTCJul 18, 18:20 UTC1h 10m
2026-07-18 UAL1763 SFO → AUS Jul 18, 03:20 UTCJul 18, 06:05 UTC2h 45m
2026-07-17 UAL623 - Jul 17, 18:15 UTCJul 18, 02:05 UTC7h 50m
2026-07-17 UAL704 - Jul 17, 14:50 UTCJul 17, 16:40 UTC1h 50m
2026-07-17 UAL1269 ORD → BWI Jul 17, 12:00 UTCJul 17, 13:29 UTC1h 30m
2026-07-17 UAL1990 - Jul 17, 02:54 UTCJul 17, 02:59 UTC5m
2026-07-17 UAL1990 AUS → ORD Jul 17, 00:35 UTCJul 17, 02:59 UTC2h 25m
2026-07-17 UAL1990 AUS → ORD Jul 17, 00:30 UTCJul 17, 02:37 UTC2h 7m
2026-07-16 UAL622 - Jul 16, 23:05 UTCJul 16, 23:25 UTC20m
2026-07-16 UAL622 ORD → SAT Jul 16, 18:55 UTCJul 16, 22:10 UTC3h 15m
2026-07-16 UAL1660 - Jul 16, 15:55 UTCJul 16, 16:19 UTC25m
2026-07-16 UAL2093 - Jul 16, 13:54 UTCJul 16, 14:25 UTC30m
2026-07-16 UAL2137 - Jul 16, 11:30 UTCJul 16, 12:05 UTC35m
2026-07-15 UAL1178 ORD → GRR Jul 15, 23:44 UTCJul 15, 23:47 UTC3m
2026-07-15 UAL1178 - Jul 15, 23:25 UTCJul 15, 23:55 UTC30m
2026-07-15 UAL2824 - Jul 15, 18:25 UTCJul 15, 20:45 UTC2h 20m
2026-07-15 UAL490 - Jul 15, 14:40 UTCJul 15, 17:05 UTC2h 25m
2026-07-15 UAL2638 DCA → ORD Jul 15, 11:30 UTCJul 15, 13:00 UTC1h 30m
2026-07-15 UAL1369 - Jul 15, 03:20 UTCJul 15, 04:45 UTC1h 25m

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 N465UA page for operator, model, and routing details .

Mode-S A5ADF1 frequently asked

What is Mode-S code A5ADF1?
A5ADF1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N465UA.
Where is Mode-S A5ADF1 registered?
Mode-S code A5ADF1 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 A5ADF1 broadcasting right now?
Mode-S A5ADF1 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5ADF1, octal 51326761, decimal 10,857,969.
What flights does A5ADF1 operate?
Mode-S A5ADF1 has broadcast 20 distinct callsigns, including UAL1476, UAL790, UAL561, UAL358, UAL1842.