Apparatus

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sensors Mode-S transponder

A35254

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N313DU · AIRBUS A220-300 · operated by DELTA AIR LINES INC

Hex
A35254
Octal
50651124
Decimal
10,703,444
Country
US
Tail
N313DU
Type
BCS3
Broadcasting now · callsign DAL2635 · 16,975 ft
Flights observed
462
Distinct callsigns
20
Country
US
Last broadcast
18m ago

Current position

A35254 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A35254 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
DAL2870 - 12 2026-07-13
DAL2088 - 11 2026-06-14
DAL925 - 10 2026-07-13
DAL2543 - 10 2026-07-14
DAL831 - 9 2026-06-29
DAL1412 - 9 2026-06-16
DAL2679 Delta Air Lines 8 2026-06-14
DAL936 - 7 2026-07-13
DAL2068 Delta Air Lines 7 2026-05-30
DAL751 Delta Air Lines 6 2026-04-17
DAL739 - 6 2026-07-03
DAL716 Delta Air Lines 6 2026-04-17
DAL2963 Delta Air Lines 6 2026-05-06
DAL2673 - 6 2026-06-14
DAL2635 - 6 2026-07-14
DAL2408 - 6 2026-07-12
DAL1358 - 6 2026-06-30
DAL1156 - 6 2026-07-03
DAL1061 - 6 2026-07-09
DAL563 - 5 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL2635 - Jul 14, 05:30 UTCJul 14, 07:00 UTC1h 30m
2026-07-14 DAL2543 DEN → SEA Jul 14, 00:50 UTCJul 14, 03:05 UTC2h 15m
2026-07-13 DAL2543 SEA → DEN Jul 13, 21:05 UTCJul 13, 23:15 UTC2h 10m
2026-07-13 DAL2870 SFO → SEA Jul 13, 17:45 UTCJul 13, 19:15 UTC1h 30m
2026-07-13 DAL2870 SFO → SEA Jul 13, 17:42 UTCJul 13, 19:06 UTC1h 24m
2026-07-13 DAL2870 SEA → SFO Jul 13, 14:35 UTCJul 13, 16:30 UTC1h 55m
2026-07-13 DAL925 ANC → SEA Jul 13, 10:04 UTCJul 13, 13:08 UTC3h 4m
2026-07-13 DAL925 - Jul 13, 10:05 UTCJul 13, 13:10 UTC3h 5m
2026-07-13 DAL936 SEA → ANC Jul 13, 05:51 UTCJul 13, 08:55 UTC3h 4m
2026-07-13 DAL936 SEA → ANC Jul 13, 05:50 UTCJul 13, 08:55 UTC3h 5m
2026-07-13 DAL2543 - Jul 13, 01:35 UTCJul 13, 04:15 UTC2h 40m
2026-07-13 DAL2543 DEN → SEA Jul 13, 01:34 UTCJul 13, 04:15 UTC2h 41m
2026-07-12 DAL2543 SEA → DEN Jul 12, 22:05 UTCJul 13, 00:15 UTC2h 10m
2026-07-12 DAL2870 SFO → SEA Jul 12, 18:45 UTCJul 12, 20:10 UTC1h 25m
2026-07-12 DAL2870 SFO → SEA Jul 12, 18:44 UTCJul 12, 20:11 UTC1h 27m
2026-07-12 DAL2870 SEA → SFO Jul 12, 15:15 UTCJul 12, 17:15 UTC2h 0m
2026-07-12 DAL2408 FAI → SEA Jul 12, 09:38 UTCJul 12, 12:49 UTC3h 11m
2026-07-12 DAL2408 FAI → SEA Jul 12, 09:40 UTCJul 12, 12:50 UTC3h 10m
2026-07-12 DAL2186 SEA → FAI Jul 12, 05:10 UTCJul 12, 08:20 UTC3h 10m
2026-07-12 DAL2186 SEA → FAI Jul 12, 05:09 UTCJul 12, 08:18 UTC3h 9m
2026-07-12 DAL2543 DEN → SEA Jul 12, 01:05 UTCJul 12, 03:35 UTC2h 30m
2026-07-11 DAL2543 - Jul 11, 21:35 UTCJul 11, 23:40 UTC2h 5m
2026-07-11 DAL2870 - Jul 11, 18:45 UTCJul 11, 20:15 UTC1h 30m
2026-07-11 DAL2870 SEA → SFO Jul 11, 15:30 UTCJul 11, 17:25 UTC1h 55m
2026-07-11 DAL925 ANC → SEA Jul 11, 09:40 UTCJul 11, 12:40 UTC3h 0m
2026-07-10 DAL928 SEA → ANC Jul 10, 21:00 UTCJul 11, 00:00 UTC3h 0m
2026-07-10 DAL2374 - Jul 10, 16:45 UTCJul 10, 19:15 UTC2h 30m
2026-07-10 DAL2447 SEA → PHX Jul 10, 03:55 UTCJul 10, 06:15 UTC2h 20m
2026-07-09 DAL1061 - Jul 9, 22:50 UTCJul 10, 02:05 UTC3h 15m
2026-07-09 DAL1061 FAI → SEA Jul 9, 22:48 UTCJul 10, 02:08 UTC3h 20m
2026-07-09 DAL1061 SEA → FAI Jul 9, 18:10 UTCJul 9, 21:25 UTC3h 15m
2026-07-09 DAL804 DFW → SEA Jul 9, 12:00 UTCJul 9, 15:40 UTC3h 40m
2026-07-09 DAL870 SEA → DFW Jul 9, 01:20 UTCJul 9, 04:40 UTC3h 20m
2026-07-08 DAL952 - Jul 8, 21:25 UTCJul 9, 00:00 UTC2h 35m
2026-07-08 DAL952 SNA → SEA Jul 8, 21:24 UTCJul 8, 23:58 UTC2h 34m
2026-07-08 DAL952 - Jul 8, 17:35 UTCJul 8, 19:50 UTC2h 15m
2026-07-08 DAL2105 - Jul 8, 12:20 UTCJul 8, 15:50 UTC3h 30m
2026-07-08 DAL2256 - Jul 8, 00:40 UTCJul 8, 03:45 UTC3h 5m
2026-07-07 DAL2768 EDF → SEA Jul 7, 20:00 UTCJul 7, 23:15 UTC3h 15m
2026-07-07 DAL2768 ANC → SEA Jul 7, 19:57 UTCJul 7, 23:04 UTC3h 7m
2026-07-07 DAL2768 SEA → ANC Jul 7, 14:55 UTCJul 7, 17:50 UTC2h 55m
2026-07-07 DAL2218 GEG → SEA Jul 7, 12:40 UTCJul 7, 13:20 UTC40m
2026-07-07 DAL2218 GEG → SEA Jul 7, 12:38 UTCJul 7, 13:19 UTC41m
2026-07-07 DAL2354 SEA → GEG Jul 7, 06:10 UTCJul 7, 06:50 UTC40m
2026-07-07 DAL2354 SEA → GEG Jul 7, 06:07 UTCJul 7, 06:46 UTC39m
2026-07-07 DAL2318 - Jul 7, 02:35 UTCJul 7, 04:50 UTC2h 15m
2026-07-06 DAL2318 - Jul 6, 22:55 UTCJul 7, 01:15 UTC2h 20m
2026-07-06 DAL1684 - Jul 6, 16:40 UTCJul 6, 20:30 UTC3h 50m
2026-07-06 DAL1410 BOS → AUS Jul 6, 10:45 UTCJul 6, 14:35 UTC3h 50m
2026-07-05 DAL2677 - Jul 5, 23:00 UTCJul 6, 01:05 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 N313DU page for operator, model, and routing details .

Mode-S A35254 frequently asked

What is Mode-S code A35254?
A35254 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N313DU.
Where is Mode-S A35254 registered?
Mode-S code A35254 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 A35254 broadcasting right now?
Yes. Mode-S A35254 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A35254, octal 50651124, decimal 10,703,444.
What flights does A35254 operate?
Mode-S A35254 has broadcast 20 distinct callsigns, including DAL2870, DAL2088, DAL925, DAL2543, DAL831.