Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A48321

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N390DN · AIRBUS A-321 · operated by DELTA AIR LINES INC

Hex
A48321
Octal
51101441
Decimal
10,781,473
Country
US
Tail
N390DN
Type
A321
No current signal · last broadcast 1h ago
Flights observed
474
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A48321.

Country allocation

The ICAO 24-bit address A48321 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
DAL2520 - 9 2026-07-07
DAL1882 - 8 2026-06-26
DAL1682 Delta Air Lines 8 2026-04-27
DAL364 - 7 2026-07-07
DAL2465 - 7 2026-07-06
DAL434 - 6 2026-07-11
DAL2940 - 6 2026-06-25
DAL1122 Delta Air Lines 6 2026-05-25
DAL746 - 5 2026-06-28
DAL715 - 5 2026-07-07
DAL468 - 5 2026-06-23
DAL326 - 5 2026-07-07
DAL2960 - 5 2026-07-02
DAL2663 - 5 2026-07-04
DAL2431 - 5 2026-07-13
DAL2125 Delta Air Lines 5 2026-07-02
DAL1455 - 5 2026-07-13
DAL992 - 4 2026-07-11
DAL969 - 4 2026-06-28
DAL957 - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL2295 - Jul 14, 03:55 UTCJul 14, 04:15 UTC20m
2026-07-14 DAL1220 DEN → MSP Jul 14, 00:45 UTCJul 14, 02:20 UTC1h 35m
2026-07-13 DAL2431 - Jul 13, 20:45 UTCJul 13, 23:00 UTC2h 15m
2026-07-13 DAL2431 DTW → DEN Jul 13, 20:41 UTCJul 13, 22:55 UTC2h 14m
2026-07-13 DAL1455 MCO → DTW Jul 13, 16:40 UTCJul 13, 18:45 UTC2h 5m
2026-07-13 DAL1455 - Jul 13, 13:10 UTCJul 13, 15:15 UTC2h 5m
2026-07-13 DAL1019 BOS → DTW Jul 13, 09:55 UTCJul 13, 11:30 UTC1h 35m
2026-07-13 DAL2269 ATL → BOS Jul 13, 01:29 UTCJul 13, 03:38 UTC2h 9m
2026-07-13 DAL2269 ATL → BNH Jul 13, 01:30 UTCJul 13, 03:40 UTC2h 10m
2026-07-12 DAL1848 SJD → ATL Jul 12, 19:32 UTCJul 12, 23:16 UTC3h 44m
2026-07-12 DAL1815 - Jul 12, 14:25 UTCJul 12, 22:15 UTC7h 50m
2026-07-12 DAL1200 ROC → ATL Jul 12, 10:15 UTCJul 12, 11:55 UTC1h 40m
2026-07-12 DAL2472 ATL → ROC Jul 12, 04:30 UTCJul 12, 06:05 UTC1h 35m
2026-07-12 DAL2472 ATL → ROC Jul 12, 04:29 UTCJul 12, 06:02 UTC1h 33m
2026-07-11 DAL957 DEN → ATL Jul 11, 21:25 UTCJul 12, 00:01 UTC2h 35m
2026-07-11 DAL957 ATL → DEN Jul 11, 17:15 UTCJul 11, 19:50 UTC2h 35m
2026-07-11 DAL992 LGA → ATL Jul 11, 13:25 UTCJul 11, 15:15 UTC1h 50m
2026-07-11 DAL434 ATL → LGA Jul 11, 00:35 UTCJul 11, 02:15 UTC1h 40m
2026-07-10 DAL988 LGA → ATL Jul 10, 18:55 UTCJul 10, 20:45 UTC1h 50m
2026-07-10 DAL1164 MCO → LGA Jul 10, 15:00 UTCJul 10, 17:10 UTC2h 10m
2026-07-10 DAL1164 LGA → MCO Jul 10, 11:10 UTCJul 10, 13:20 UTC2h 10m
2026-07-10 DAL434 ATL → LGA Jul 10, 01:35 UTCJul 10, 03:45 UTC2h 10m
2026-07-10 DAL434 ATL → LGA Jul 10, 01:35 UTCJul 10, 03:45 UTC2h 10m
2026-07-09 DAL1755 ATL → ATL Jul 9, 12:45 UTCJul 9, 21:00 UTC8h 15m
2026-07-09 DAL905 SLC → ATL Jul 9, 01:00 UTCJul 9, 04:20 UTC3h 20m
2026-07-08 DAL526 ATL → SLC Jul 8, 19:50 UTCJul 8, 23:30 UTC3h 40m
2026-07-08 DAL993 LGA → ATL Jul 8, 15:20 UTCJul 8, 17:00 UTC1h 40m
2026-07-08 DAL323 LAX → JFK Jul 8, 11:45 UTCJul 8, 13:30 UTC1h 45m
2026-07-07 DAL715 - Jul 7, 21:35 UTCJul 8, 01:30 UTC3h 55m
2026-07-07 DAL326 ATL → LAX Jul 7, 15:45 UTCJul 7, 19:50 UTC4h 5m
2026-07-07 DAL364 LGA → ATL Jul 7, 12:20 UTCJul 7, 14:10 UTC1h 50m
2026-07-07 DAL2520 MCO → LGA Jul 7, 03:10 UTCJul 7, 05:10 UTC2h 0m
2026-07-06 DAL2520 - Jul 6, 23:50 UTCJul 7, 01:15 UTC1h 25m
2026-07-06 DAL2520 - Jul 6, 22:55 UTCJul 6, 23:45 UTC50m
2026-07-06 DAL2465 PPM → LGA Jul 6, 16:05 UTCJul 6, 19:15 UTC3h 10m
2026-07-06 DAL2465 FLL → LGA Jul 6, 16:01 UTCJul 6, 18:59 UTC2h 58m
2026-07-06 DAL2465 LGA → FLL Jul 6, 11:30 UTCJul 6, 14:05 UTC2h 35m
2026-07-06 DAL2321 FLL → LGA Jul 6, 00:15 UTCJul 6, 02:55 UTC2h 40m
2026-07-05 DAL2321 LGA → FLL Jul 5, 19:50 UTCJul 5, 22:25 UTC2h 35m
2026-07-05 DAL467 ATL → LGA Jul 5, 15:50 UTCJul 5, 17:35 UTC1h 45m
2026-07-05 DAL342 LGA → ATL Jul 5, 11:20 UTCJul 5, 13:05 UTC1h 45m
2026-07-04 DAL997 ATL → LGA Jul 4, 21:15 UTCJul 4, 23:00 UTC1h 45m
2026-07-04 DAL835 LGA → RSW Jul 4, 16:10 UTCJul 4, 19:25 UTC3h 15m
2026-07-04 DAL1331 - Jul 4, 13:00 UTCJul 4, 14:25 UTC1h 25m
2026-07-04 DAL1091 SLC → SFO Jul 4, 04:15 UTCJul 4, 05:50 UTC1h 35m
2026-07-04 DAL1091 SLC → SFO Jul 4, 04:14 UTCJul 4, 05:39 UTC1h 25m
2026-07-04 DAL2663 DEN → SLC Jul 4, 02:00 UTCJul 4, 03:00 UTC1h 0m
2026-07-03 DAL519 BOS → LAX Jul 3, 21:45 UTCJul 4, 00:35 UTC2h 50m
2026-07-03 DAL1179 - Jul 3, 15:05 UTCJul 3, 19:05 UTC4h 0m
2026-07-02 DAL2125 OAK → SLC Jul 2, 17:03 UTCJul 2, 20:32 UTC3h 29m

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 N390DN page for operator, model, and routing details .

Mode-S A48321 frequently asked

What is Mode-S code A48321?
A48321 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N390DN.
Where is Mode-S A48321 registered?
Mode-S code A48321 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 A48321 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A48321, octal 51101441, decimal 10,781,473.
What flights does A48321 operate?
Mode-S A48321 has broadcast 20 distinct callsigns, including DAL2520, DAL1882, DAL1682, DAL364, DAL2465.