Apparatus

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sensors Mode-S transponder

A3D326

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N34562 · AIRBUS A-321neo · operated by UNITED AIRLINES INC

Hex
A3D326
Octal
50751446
Decimal
10,736,422
Country
US
Tail
N34562
Type
A21N
No current signal · last broadcast Jul 26, 21:25 UTC
Flights observed
445
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:25 UTC

Last known position

Most recent position reported by Mode-S A3D326.

Country allocation

The ICAO 24-bit address A3D326 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
UAL1755 United Airlines 8 2026-06-13
UAL617 - 7 2026-07-08
UAL1482 - 7 2026-06-30
UAL767 United Airlines 6 2026-06-10
UAL2487 - 6 2026-07-17
UAL1568 - 6 2026-07-11
UAL1409 - 6 2026-07-08
UAL534 United Airlines 5 2026-07-20
UAL2455 United Airlines 5 2026-04-26
UAL2354 United Airlines 5 2026-07-24
UAL1799 United Airlines 5 2026-07-08
UAL714 - 4 2026-07-17
UAL695 - 4 2026-07-13
UAL511 - 4 2026-07-10
UAL495 United Airlines 4 2026-07-22
UAL459 - 4 2026-07-04
UAL403 United Airlines 4 2026-05-15
UAL347 - 4 2026-06-21
UAL2692 United Airlines 4 2026-04-26
UAL2607 United Airlines 4 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL2481 PSP → SFO Jul 26, 18:35 UTCJul 26, 21:20 UTC2h 45m
2026-07-26 UAL1643 RIC → DEN Jul 26, 14:45 UTCJul 26, 16:50 UTC2h 5m
2026-07-26 UAL2649 ORD → LAX Jul 26, 03:30 UTCJul 26, 05:25 UTC1h 55m
2026-07-25 UAL2146 LAX → DEN Jul 25, 23:40 UTCJul 26, 01:30 UTC1h 50m
2026-07-25 UAL774 MCO → IAH Jul 25, 20:05 UTCJul 25, 21:55 UTC1h 50m
2026-07-25 UAL774 MCO → IAH Jul 25, 20:04 UTCJul 25, 21:54 UTC1h 50m
2026-07-25 UAL1912 LAX → DEN Jul 25, 16:10 UTCJul 25, 18:05 UTC1h 55m
2026-07-25 UAL531 EWR → PBI Jul 25, 03:45 UTCJul 25, 05:45 UTC2h 0m
2026-07-24 UAL1770 EWR → SAV Jul 24, 21:40 UTCJul 25, 01:05 UTC3h 25m
2026-07-24 UAL1770 EWR → SAV Jul 24, 21:32 UTCJul 25, 01:02 UTC3h 30m
2026-07-24 UAL2354 BUR → SFO Jul 24, 16:35 UTCJul 24, 19:40 UTC3h 5m
2026-07-24 UAL1217 IAH → BOS Jul 24, 12:30 UTCJul 24, 14:40 UTC2h 10m
2026-07-24 UAL353 SAN → EWR Jul 24, 06:30 UTCJul 24, 10:05 UTC3h 35m
2026-07-24 UAL8162 ORD → MIA Jul 24, 02:55 UTCJul 24, 04:45 UTC1h 50m
2026-07-23 UAL1354 SAT → IAD Jul 23, 20:05 UTCJul 23, 23:35 UTC3h 30m
2026-07-23 UAL1102 MSN → EWR Jul 23, 16:05 UTCJul 23, 18:20 UTC2h 15m
2026-07-23 UAL2631 ORD → MCI Jul 23, 11:35 UTCJul 23, 13:55 UTC2h 20m
2026-07-23 UAL1779 MIA → EWR Jul 23, 03:10 UTCJul 23, 04:55 UTC1h 45m
2026-07-22 UAL2135 EWR → MCO Jul 22, 22:50 UTCJul 23, 00:55 UTC2h 5m
2026-07-22 UAL144K - Jul 22, 18:15 UTCJul 22, 20:15 UTC2h 0m
2026-07-22 UAL2315 BOS → ORD Jul 22, 13:58 UTCJul 22, 15:41 UTC1h 43m
2026-07-22 UAL2315 BOS → ORD Jul 22, 13:55 UTCJul 22, 15:55 UTC2h 0m
2026-07-22 UAL495 BZN → EWR Jul 22, 02:55 UTCJul 22, 05:25 UTC2h 30m
2026-07-21 UAL421 BDL → IAD Jul 21, 22:00 UTCJul 22, 01:10 UTC3h 10m
2026-07-21 UAL2061 SAN → EWR Jul 21, 18:15 UTCJul 21, 20:05 UTC1h 50m
2026-07-21 UAL1638 DEN → LAX Jul 21, 14:10 UTCJul 21, 16:00 UTC1h 50m
2026-07-21 UAL2610 IAD → PDX Jul 21, 06:35 UTCJul 21, 08:30 UTC1h 55m
2026-07-21 UAL531 EWR → PBI Jul 21, 03:30 UTCJul 21, 05:20 UTC1h 50m
2026-07-20 UAL1197 PBI → EWR Jul 20, 22:15 UTCJul 21, 02:05 UTC3h 49m
2026-07-20 UAL1197 PBI → EWR Jul 20, 21:42 UTCJul 21, 01:58 UTC4h 16m
2026-07-20 UAL1423 DEN → EWR Jul 20, 16:25 UTCJul 20, 19:40 UTC3h 15m
2026-07-20 UAL670 EWR → DEN Jul 20, 10:40 UTCJul 20, 14:15 UTC3h 35m
2026-07-20 UAL534 HNL → LAX Jul 20, 00:42 UTCJul 20, 02:05 UTC1h 23m
2026-07-20 UAL534 HNL → LAX Jul 20, 00:25 UTCJul 20, 02:10 UTC1h 45m
2026-07-19 UAL2481 MCO → ORD Jul 19, 20:20 UTCJul 19, 22:45 UTC2h 25m
2026-07-19 UAL1643 - Jul 19, 15:00 UTCJul 19, 17:05 UTC2h 5m
2026-07-19 UAL1414 BOS → ORD Jul 19, 10:20 UTCJul 19, 12:45 UTC2h 25m
2026-07-19 UAL2331 - Jul 19, 00:35 UTCJul 19, 02:20 UTC1h 45m
2026-07-18 UAL2835 - Jul 18, 18:20 UTCJul 18, 21:35 UTC3h 15m
2026-07-18 UAL341 ORD → SEA Jul 18, 12:45 UTCJul 18, 16:45 UTC4h 0m
2026-07-18 UAL787 IAH → ORD Jul 18, 01:39 UTCJul 18, 03:45 UTC2h 6m
2026-07-17 UAL714 ORD → IAH Jul 17, 22:03 UTCJul 18, 00:14 UTC2h 11m
2026-07-17 UAL714 - Jul 17, 22:10 UTCJul 18, 00:15 UTC2h 5m
2026-07-17 UAL2827 - Jul 17, 17:50 UTCJul 17, 20:10 UTC2h 20m
2026-07-17 UAL1231 - Jul 17, 13:15 UTCJul 17, 15:15 UTC2h 0m
2026-07-17 UAL1231 ORD → IAH Jul 17, 13:08 UTCJul 17, 15:14 UTC2h 6m
2026-07-17 UAL2487 - Jul 17, 01:35 UTCJul 17, 01:59 UTC25m
2026-07-16 UAL2487 - Jul 16, 21:50 UTCJul 17, 01:29 UTC3h 40m
2026-07-16 UAL2487 LAX → ORD Jul 16, 21:44 UTCJul 17, 01:19 UTC3h 35m
2026-07-16 UAL1044 - Jul 16, 16:09 UTCJul 16, 19:35 UTC3h 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 N34562 page for operator, model, and routing details .

Mode-S A3D326 frequently asked

What is Mode-S code A3D326?
A3D326 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N34562.
Where is Mode-S A3D326 registered?
Mode-S code A3D326 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 A3D326 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3D326, octal 50751446, decimal 10,736,422.
What flights does A3D326 operate?
Mode-S A3D326 has broadcast 20 distinct callsigns, including UAL1755, UAL617, UAL1482, UAL767, UAL2487.