Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
525
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A35254.

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
DAL925 - 12 2026-07-15
DAL2870 - 12 2026-07-13
DAL2088 - 11 2026-06-14
DAL2543 - 10 2026-07-14
DAL2408 Delta Air Lines 10 2026-07-26
DAL936 - 9 2026-07-15
DAL831 - 9 2026-06-29
DAL739 Delta Air Lines 9 2026-07-26
DAL1412 - 9 2026-06-16
DAL1156 Delta Air Lines 9 2026-07-26
DAL2679 Delta Air Lines 8 2026-06-14
DAL2635 - 8 2026-07-14
DAL303 Delta Air Lines 7 2026-07-22
DAL2186 Delta Air Lines 7 2026-07-26
DAL2068 Delta Air Lines 7 2026-05-30
DAL751 Delta Air Lines 6 2026-04-17
DAL716 Delta Air Lines 6 2026-04-17
DAL2963 Delta Air Lines 6 2026-05-06
DAL2804 Delta Air Lines 6 2026-07-22
DAL2673 - 6 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1156 BNA → BOS Jul 26, 19:35 UTCJul 26, 23:00 UTC3h 25m
2026-07-26 DAL739 MIA → LAX Jul 26, 14:30 UTCJul 26, 18:10 UTC3h 40m
2026-07-26 DAL2408 MSP → MCI Jul 26, 09:45 UTCJul 26, 13:00 UTC3h 15m
2026-07-26 DAL2408 MSP → MCI Jul 26, 09:41 UTCJul 26, 12:58 UTC3h 17m
2026-07-26 DAL2186 SLC → PHL Jul 26, 05:10 UTCJul 26, 08:15 UTC3h 6m
2026-07-25 DAL2449 BOS → JFK Jul 25, 23:10 UTCJul 26, 01:45 UTC2h 35m
2026-07-25 DAL2449 BOS → JFK Jul 25, 19:00 UTCJul 25, 22:00 UTC3h 0m
2026-07-25 DAL853 ANC → SEA Jul 25, 14:00 UTCJul 25, 17:10 UTC3h 10m
2026-07-24 DAL928 PHX → JFK Jul 24, 21:00 UTCJul 25, 00:10 UTC3h 10m
2026-07-24 DAL2374 BOS → MCO Jul 24, 16:45 UTCJul 24, 19:15 UTC2h 30m
2026-07-24 DAL2447 MEM → DTW Jul 24, 04:00 UTCJul 24, 06:35 UTC2h 35m
2026-07-24 DAL2447 MEM → DTW Jul 24, 04:00 UTCJul 24, 06:27 UTC2h 27m
2026-07-23 DAL408 CVG → SLC Jul 23, 21:35 UTCJul 24, 01:20 UTC3h 45m
2026-07-23 DAL803 LAX → SEA Jul 23, 16:35 UTCJul 23, 19:55 UTC3h 20m
2026-07-23 DAL803 LAX → SEA Jul 23, 16:35 UTCJul 23, 19:57 UTC3h 22m
2026-07-23 DAL1731 DEN → SEA Jul 23, 12:55 UTCJul 23, 15:25 UTC2h 30m
2026-07-23 DAL208 JFK → EDI Jul 23, 01:36 UTCJul 23, 07:31 UTC5h 55m
2026-07-23 DAL2851 YUL → ATL Jul 23, 03:10 UTCJul 23, 05:20 UTC2h 10m
2026-07-22 DAL408 CVG → SLC Jul 22, 21:30 UTCJul 23, 00:50 UTC3h 20m
2026-07-22 DAL408 CVG → SLC Jul 22, 21:25 UTCJul 23, 00:49 UTC3h 24m
2026-07-22 DAL303 JFK → SFO Jul 22, 16:20 UTCJul 22, 19:52 UTC3h 32m
2026-07-22 DAL303 JFK → SFO Jul 22, 16:25 UTCJul 22, 20:00 UTC3h 35m
2026-07-22 DAL2828 LAX → DEN Jul 22, 12:15 UTCJul 22, 14:00 UTC1h 45m
2026-07-22 DAL2804 ATL → DAY Jul 22, 01:55 UTCJul 22, 04:15 UTC2h 20m
2026-07-22 DAL2804 ATL → DAY Jul 22, 01:54 UTCJul 22, 04:11 UTC2h 17m
2026-07-21 DAL1156 BNA → BOS Jul 21, 20:30 UTCJul 22, 00:20 UTC3h 50m
2026-07-21 DAL739 MIA → LAX Jul 21, 14:25 UTCJul 21, 18:05 UTC3h 40m
2026-07-21 DAL2408 MSP → MCI Jul 21, 09:45 UTCJul 21, 13:10 UTC3h 25m
2026-07-21 DAL2408 MSP → MCI Jul 21, 09:41 UTCJul 21, 13:06 UTC3h 25m
2026-07-21 DAL2186 SLC → PHL Jul 21, 05:10 UTCJul 21, 08:15 UTC3h 5m
2026-07-20 DAL373 BNA → SEA Jul 20, 22:35 UTCJul 21, 02:50 UTC4h 14m
2026-07-20 DAL2748 MSP → FSD Jul 20, 18:12 UTCJul 20, 20:07 UTC1h 55m
2026-07-20 DAL2748 MSP → FSD Jul 20, 18:15 UTCJul 20, 20:00 UTC1h 45m
2026-07-20 DAL2194 BDL → ATL Jul 20, 15:05 UTCJul 20, 16:20 UTC1h 15m
2026-07-20 DAL2194 BDL → ATL Jul 20, 12:30 UTCJul 20, 13:45 UTC1h 15m
2026-07-20 DAL1390 JFK → PBI Jul 20, 00:20 UTCJul 20, 01:55 UTC1h 35m
2026-07-19 DAL1390 JFK → PBI Jul 19, 20:15 UTCJul 19, 22:15 UTC2h 0m
2026-07-19 DAL2985 - Jul 19, 17:15 UTCJul 19, 18:50 UTC1h 35m
2026-07-19 DAL2985 ORD → LGA Jul 19, 17:13 UTCJul 19, 18:48 UTC1h 35m
2026-07-19 DAL2985 LGA → ORD Jul 19, 13:30 UTCJul 19, 15:40 UTC2h 10m
2026-07-18 DAL1426 JFK → DFW Jul 18, 11:50 UTCJul 18, 12:30 UTC40m
2026-07-18 DAL1825 LGA → DCA Jul 18, 03:10 UTCJul 18, 03:55 UTC45m
2026-07-17 DAL822 MSY → LAX Jul 17, 22:45 UTCJul 18, 00:29 UTC1h 45m
2026-07-17 DAL1710 SEA → BNA Jul 17, 16:40 UTCJul 17, 20:40 UTC4h 0m
2026-07-17 DAL1710 SEA → BNA Jul 17, 16:36 UTCJul 17, 20:39 UTC4h 3m
2026-07-17 DAL1731 DEN → SEA Jul 17, 12:40 UTCJul 17, 14:55 UTC2h 15m
2026-07-17 DAL2851 SEA → DEN Jul 17, 03:10 UTCJul 17, 05:25 UTC2h 15m
2026-07-16 DAL408 DFW → SEA Jul 16, 21:40 UTCJul 17, 01:31 UTC3h 51m
2026-07-16 DAL408 DFW → SEA Jul 16, 21:45 UTCJul 17, 01:35 UTC3h 50m
2026-07-16 DAL303 BOS → DFW Jul 16, 16:09 UTCJul 16, 19:31 UTC3h 22m

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?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
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 DAL925, DAL2870, DAL2088, DAL2543, DAL2408.