Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A5D319

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N47453 · operated by UNITED AIRLINES INC

Hex
A5D319
Octal
51351431
Decimal
10,867,481
Country
US
Tail
N47453
No current signal · last broadcast 26m ago
Flights observed
195
Distinct callsigns
20
Country
US
Last broadcast
26m ago

Last known position

Most recent position reported by Mode-S A5D319.

Country allocation

The ICAO 24-bit address A5D319 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
UAL1318 United Airlines 5 2026-05-30
UAL1144 United Airlines 4 2026-05-08
UAL744 United Airlines 3 2026-05-18
UAL602 United Airlines 3 2026-06-11
UAL2219 United Airlines 3 2026-06-04
UAL2198 United Airlines 3 2026-05-19
UAL2040 United Airlines 3 2026-06-11
UAL2019 United Airlines 3 2026-05-27
UAL1581 United Airlines 3 2026-06-06
UAL1575 United Airlines 3 2026-05-15
UAL8123 United Airlines 2 2026-05-29
UAL701 United Airlines 2 2026-06-04
UAL609 United Airlines 2 2026-05-23
UAL545 United Airlines 2 2026-05-19
UAL532 United Airlines 2 2026-05-17
UAL4207 United Airlines 2 2026-04-25
UAL393 United Airlines 2 2026-05-19
UAL3912 United Airlines 2 2026-04-26
UAL327 United Airlines 2 2026-06-01
UAL2752 United Airlines 2 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-11 UAL602 BWI → SFO Jun 11, 06:30 UTCJun 11, 09:50 UTC3h 20m
2026-06-11 UAL2040 PHL → IAH Jun 11, 02:35 UTCJun 11, 04:40 UTC2h 5m
2026-06-11 UAL2040 PHL → IAH Jun 11, 00:56 UTCJun 11, 04:30 UTC3h 34m
2026-06-10 UAL1015 EWR → MIA Jun 10, 14:15 UTCJun 10, 19:20 UTC5h 5m
2026-06-09 UAL2620 SFO → MSY Jun 9, 21:15 UTCJun 10, 02:35 UTC5h 20m
2026-06-09 UAL2396 BOS → EWR Jun 9, 15:25 UTCJun 9, 18:10 UTC2h 45m
2026-06-09 UAL1437 CMH → ORD Jun 9, 11:10 UTCJun 9, 13:45 UTC2h 35m
2026-06-09 UAL2474 SFO → BOS Jun 9, 03:20 UTCJun 9, 04:05 UTC45m
2026-06-09 UAL2114 LGA → ORD Jun 9, 00:50 UTCJun 9, 01:35 UTC45m
2026-06-08 UAL1590 EWR → IAH Jun 8, 19:56 UTCJun 8, 22:52 UTC2h 56m
2026-06-08 UAL1590 EWR → IAH Jun 8, 19:50 UTCJun 8, 23:00 UTC3h 10m
2026-06-08 UAL2433 JAX → EWR Jun 8, 15:20 UTCJun 8, 18:00 UTC2h 40m
2026-06-08 UAL2785 EWR → HNL Jun 8, 11:15 UTCJun 8, 13:40 UTC2h 25m
2026-06-08 UAL2235 SAN → SFO Jun 8, 00:50 UTCJun 8, 02:15 UTC1h 25m
2026-06-08 UAL2235 SAN → SFO Jun 8, 00:50 UTCJun 8, 03:19 UTC2h 29m
2026-06-07 UAL246 ORD → LGA Jun 7, 19:20 UTCJun 7, 23:05 UTC3h 45m
2026-06-07 UAL2623 SFO → OGG Jun 7, 11:50 UTCJun 7, 17:30 UTC5h 40m
2026-06-07 UAL2623 SFO → OGG Jun 7, 11:45 UTCJun 7, 17:26 UTC5h 41m
2026-06-07 UAL796 FLL → EWR Jun 7, 04:45 UTCJun 7, 09:50 UTC5h 5m
2026-06-07 UAL1572 DEN → EWR Jun 7, 01:45 UTCJun 7, 02:19 UTC35m
2026-06-06 UAL1572 DEN → EWR Jun 6, 21:35 UTCJun 6, 21:54 UTC20m
2026-06-06 UAL1581 KOA → SFO Jun 6, 19:04 UTCJun 6, 19:24 UTC20m
2026-06-06 UAL1581 KOA → SFO Jun 6, 14:30 UTCJun 6, 14:59 UTC30m
2026-06-06 UAL1581 KOA → SFO Jun 6, 14:23 UTCJun 6, 19:25 UTC5h 2m
2026-06-06 UAL2075 IAD → BDL Jun 6, 01:00 UTCJun 6, 06:25 UTC5h 25m
2026-06-05 UAL2667 ORD → PHL Jun 5, 18:05 UTCJun 5, 22:40 UTC4h 35m
2026-06-05 UAL325 DEN → BOS Jun 5, 11:10 UTCJun 5, 15:55 UTC4h 45m
2026-06-04 UAL1820 PLS → IAD Jun 4, 23:15 UTCJun 5, 00:05 UTC50m
2026-06-04 UAL1817 IAD → PLS Jun 4, 17:00 UTCJun 4, 17:55 UTC55m
2026-06-04 UAL1858 IAD → AUS Jun 4, 14:15 UTCJun 4, 15:20 UTC1h 5m
2026-06-04 UAL2355 PHX → IAH Jun 4, 10:55 UTCJun 4, 12:15 UTC1h 20m
2026-06-04 UAL2219 SJU → EWR Jun 4, 07:45 UTCJun 4, 08:50 UTC1h 5m
2026-06-04 UAL2219 SJU → EWR Jun 4, 05:10 UTCJun 4, 05:20 UTC10m
2026-06-04 UAL2219 SJU → EWR Jun 4, 05:12 UTCJun 4, 08:45 UTC3h 33m
2026-06-04 UAL701 MSY → EWR Jun 4, 01:15 UTCJun 4, 01:25 UTC10m
2026-06-03 UAL701 MSY → EWR Jun 3, 21:30 UTCJun 3, 23:45 UTC2h 15m
2026-06-03 UAL723 CLE → IAH Jun 3, 15:50 UTCJun 3, 18:00 UTC2h 10m
2026-06-03 UAL2653 RSW → EWR Jun 3, 12:30 UTCJun 3, 14:00 UTC1h 30m
2026-06-03 UAL403 LAX → ITO Jun 3, 03:05 UTCJun 3, 04:30 UTC1h 25m
2026-06-02 UAL2827 IAH → ORD Jun 2, 23:00 UTCJun 3, 01:15 UTC2h 15m
2026-06-01 UAL332 SFO → LAX Jun 1, 12:15 UTCJun 1, 15:20 UTC3h 5m
2026-06-01 UAL327 SJC → DEN Jun 1, 05:45 UTCJun 1, 10:15 UTC4h 30m
2026-06-01 UAL327 SJC → DEN Jun 1, 05:45 UTCJun 1, 10:21 UTC4h 36m
2026-06-01 UAL2461 ORF → DEN Jun 1, 01:25 UTCJun 1, 04:30 UTC3h 5m
2026-05-31 UAL2236 SFO → BOS May 31, 20:40 UTCMay 31, 23:30 UTC2h 50m
2026-05-31 UAL2606 ORD → LGA May 31, 15:35 UTCMay 31, 18:10 UTC2h 35m
2026-05-31 UAL2606 ORD → LGA May 31, 15:43 UTCMay 31, 18:11 UTC2h 28m
2026-05-31 UAL2393 JAX → EWR May 31, 13:00 UTCMay 31, 13:35 UTC35m
2026-05-30 UAL1752 EWR → MCO May 30, 21:15 UTCMay 30, 23:20 UTC2h 5m
2026-05-30 UAL1345 MIA → EWR May 30, 17:40 UTCMay 30, 19:45 UTC2h 5m

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 N47453 page for operator, model, and routing details .

Mode-S A5D319 frequently asked

What is Mode-S code A5D319?
A5D319 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N47453.
Where is Mode-S A5D319 registered?
Mode-S code A5D319 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 A5D319 broadcasting right now?
No active broadcast right now. Last signal was 26m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5D319, octal 51351431, decimal 10,867,481.
What flights does A5D319 operate?
Mode-S A5D319 has broadcast 20 distinct callsigns, including UAL1318, UAL1144, UAL744, UAL602, UAL2219.