Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A38141

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N325DU · AIRBUS A220-300 · operated by DELTA AIR LINES INC

Hex
A38141
Octal
50700501
Decimal
10,715,457
Country
US
Tail
N325DU
Type
BCS3
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
453
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A38141.

Country allocation

The ICAO 24-bit address A38141 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
DAL2768 - 18 2026-07-19
DAL1358 Delta Air Lines 13 2026-07-24
DAL2054 Delta Air Lines 11 2026-05-02
DAL2318 Delta Air Lines 10 2026-07-24
DAL2079 Delta Air Lines 10 2026-05-02
DAL1176 Delta Air Lines 9 2026-05-02
DAL691 Delta Air Lines 8 2026-06-03
DAL483 Delta Air Lines 8 2026-07-25
DAL303 - 8 2026-06-24
DAL2354 - 8 2026-07-19
DAL1061 Delta Air Lines 8 2026-07-26
DAL2449 - 7 2026-07-08
DAL1015 Delta Air Lines 7 2026-07-26
DAL831 Delta Air Lines 6 2026-07-20
DAL815 Delta Air Lines 6 2026-07-20
DAL541 Delta Air Lines 6 2026-07-24
DAL2819 Delta Air Lines 6 2026-05-08
DAL2804 - 6 2026-06-24
DAL2503 - 6 2026-07-17
DAL2140 Delta Air Lines 6 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1061 BOS → SFO Jul 26, 18:05 UTCJul 26, 21:25 UTC3h 20m
2026-07-26 DAL1015 JFK → MCO Jul 26, 11:15 UTCJul 26, 16:35 UTC5h 20m
2026-07-26 DAL2549 FLL → MSP Jul 26, 03:25 UTCJul 26, 04:45 UTC1h 20m
2026-07-25 DAL483 ATL → PHL Jul 25, 21:00 UTCJul 26, 01:10 UTC4h 10m
2026-07-25 DAL483 ATL → PHL Jul 25, 15:30 UTCJul 25, 19:30 UTC4h 0m
2026-07-25 DAL2127 MSP → SLC Jul 25, 12:45 UTCJul 25, 14:00 UTC1h 15m
2026-07-24 DAL541 JFK → DFW Jul 24, 23:25 UTCJul 25, 03:35 UTC4h 10m
2026-07-24 DAL1358 MCO → LGA Jul 24, 19:10 UTCJul 24, 21:30 UTC2h 20m
2026-07-24 DAL1358 MCO → LGA Jul 24, 15:30 UTCJul 24, 17:40 UTC2h 10m
2026-07-24 DAL2318 CLT → ATL Jul 24, 01:50 UTCJul 24, 04:05 UTC2h 15m
2026-07-23 DAL2318 CLT → ATL Jul 23, 22:20 UTCJul 24, 00:45 UTC2h 25m
2026-07-23 DAL2721 DAY → ATL Jul 23, 18:55 UTCJul 23, 20:30 UTC1h 35m
2026-07-23 DAL2635 MSP → PIT Jul 23, 15:50 UTCJul 23, 17:40 UTC1h 50m
2026-07-23 DAL1061 BOS → SFO Jul 23, 04:50 UTCJul 23, 07:55 UTC3h 5m
2026-07-23 DAL1061 BOS → SFO Jul 23, 04:47 UTCJul 23, 07:48 UTC3h 1m
2026-07-23 DAL1061 BOS → SFO Jul 23, 00:20 UTCJul 23, 03:50 UTC3h 30m
2026-07-22 DAL853 ANC → SEA Jul 22, 14:15 UTCJul 22, 17:20 UTC3h 5m
2026-07-21 DAL928 PHX → JFK Jul 21, 21:31 UTCJul 22, 00:58 UTC3h 27m
2026-07-21 DAL928 PHX → JFK Jul 21, 21:30 UTCJul 22, 00:45 UTC3h 15m
2026-07-21 DAL2870 SFO → SEA Jul 21, 18:14 UTCJul 21, 19:41 UTC1h 27m
2026-07-21 DAL2870 SEA → SFO Jul 21, 15:10 UTCJul 21, 17:00 UTC1h 50m
2026-07-21 DAL925 DFW → LGA Jul 21, 10:05 UTCJul 21, 13:20 UTC3h 15m
2026-07-21 DAL936 JFK → DEN Jul 21, 05:27 UTCJul 21, 08:22 UTC2h 55m
2026-07-21 DAL936 JFK → DEN Jul 21, 05:30 UTCJul 21, 08:25 UTC2h 55m
2026-07-20 DAL831 SEA → AUS Jul 20, 23:40 UTCJul 21, 03:20 UTC3h 40m
2026-07-20 DAL831 SEA → AUS Jul 20, 18:30 UTCJul 20, 22:15 UTC3h 45m
2026-07-20 DAL372 BNA → SEA Jul 20, 12:45 UTCJul 20, 16:55 UTC4h 10m
2026-07-20 DAL815 LAS → BOS Jul 20, 01:00 UTCJul 20, 04:50 UTC3h 50m
2026-07-19 DAL2768 ANC → SEA Jul 19, 19:50 UTCJul 19, 23:00 UTC3h 10m
2026-07-19 DAL2768 SEA → ANC Jul 19, 15:15 UTCJul 19, 18:25 UTC3h 10m
2026-07-19 DAL2218 GEG → SEA Jul 19, 12:45 UTCJul 19, 13:30 UTC45m
2026-07-19 DAL2354 SEA → GEG Jul 19, 04:55 UTCJul 19, 05:35 UTC40m
2026-07-19 DAL2543 - Jul 19, 01:15 UTCJul 19, 03:35 UTC2h 20m
2026-07-18 DAL2543 - Jul 18, 21:45 UTCJul 18, 23:55 UTC2h 10m
2026-07-18 DAL2543 - Jul 18, 19:40 UTCJul 18, 20:00 UTC20m
2026-07-18 DAL2870 - Jul 18, 18:35 UTCJul 18, 19:35 UTC1h 0m
2026-07-18 DAL2870 - Jul 18, 15:05 UTCJul 18, 16:50 UTC1h 45m
2026-07-18 DAL2408 FAI → SEA Jul 18, 09:30 UTCJul 18, 12:45 UTC3h 15m
2026-07-18 DAL2186 SLC → PHL Jul 18, 05:00 UTCJul 18, 08:05 UTC3h 5m
2026-07-18 DAL2186 SLC → PHL Jul 18, 04:58 UTCJul 18, 08:04 UTC3h 6m
2026-07-17 DAL373 BNA → SEA Jul 17, 22:35 UTCJul 18, 02:50 UTC4h 16m
2026-07-17 DAL2748 - Jul 17, 18:25 UTCJul 17, 20:20 UTC1h 55m
2026-07-17 DAL2194 - Jul 17, 15:25 UTCJul 17, 16:40 UTC1h 15m
2026-07-17 DAL2194 - Jul 17, 12:45 UTCJul 17, 13:50 UTC1h 5m
2026-07-17 DAL2503 - Jul 17, 02:45 UTCJul 17, 04:25 UTC1h 40m
2026-07-16 DAL2503 - Jul 16, 22:49 UTCJul 17, 01:09 UTC2h 20m
2026-07-16 DAL1404 - Jul 16, 20:00 UTCJul 16, 21:40 UTC1h 40m
2026-07-16 DAL1404 LGA → CHS Jul 16, 16:44 UTCJul 16, 18:10 UTC1h 25m
2026-07-16 DAL1417 - Jul 16, 12:09 UTCJul 16, 15:19 UTC3h 10m
2026-07-14 DAL2109 - Jul 14, 01:05 UTCJul 14, 04:05 UTC3h 0m

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 N325DU page for operator, model, and routing details .

Mode-S A38141 frequently asked

What is Mode-S code A38141?
A38141 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N325DU.
Where is Mode-S A38141 registered?
Mode-S code A38141 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 A38141 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A38141, octal 50700501, decimal 10,715,457.
What flights does A38141 operate?
Mode-S A38141 has broadcast 20 distinct callsigns, including DAL2768, DAL1358, DAL2054, DAL2318, DAL2079.