Apparatus

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sensors Mode-S transponder

A379D3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N323DU · AIRBUS A220-300 · operated by DELTA AIR LINES INC

Hex
A379D3
Octal
50674723
Decimal
10,713,555
Country
US
Tail
N323DU
Type
BCS3
Transponder active on ground
Flights observed
484
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:25 UTC

Last known position

Most recent position reported by Mode-S A379D3.

Country allocation

The ICAO 24-bit address A379D3 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
DAL928 - 15 2026-07-01
DAL675 Delta Air Lines 10 2026-06-09
DAL303 - 10 2026-06-16
DAL2677 Delta Air Lines 10 2026-06-09
DAL2412 - 10 2026-07-05
DAL2140 Delta Air Lines 10 2026-07-22
DAL2870 Delta Air Lines 9 2026-06-26
DAL2508 Delta Air Lines 8 2026-04-28
DAL1156 Delta Air Lines 8 2026-06-02
DAL739 Delta Air Lines 7 2026-06-02
DAL2565 - 7 2026-07-17
DAL637 Delta Air Lines 6 2026-04-16
DAL2768 - 6 2026-07-02
DAL2673 Delta Air Lines 6 2026-07-21
DAL2449 Delta Air Lines 6 2026-07-01
DAL1493 Delta Air Lines 6 2026-07-21
DAL1412 - 6 2026-06-12
DAL1410 - 6 2026-06-18
DAL1262 Delta Air Lines 6 2026-05-07
DAL1061 - 6 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2748 MSP → FSD Jul 26, 18:37 UTCJul 26, 20:27 UTC1h 50m
2026-07-26 DAL2748 MSP → FSD Jul 26, 18:40 UTCJul 26, 20:25 UTC1h 45m
2026-07-25 DAL1769 ORD → MSP Jul 25, 19:38 UTCJul 25, 22:04 UTC2h 26m
2026-07-25 DAL1769 ORD → MSP Jul 25, 15:35 UTCJul 25, 22:05 UTC6h 30m
2026-07-25 DAL2068 RDU → BOS Jul 25, 01:45 UTCJul 25, 04:00 UTC2h 15m
2026-07-24 DAL2068 RDU → BOS Jul 24, 22:00 UTCJul 25, 00:35 UTC2h 35m
2026-07-24 DAL572 ATL → BOS Jul 24, 15:55 UTCJul 24, 18:15 UTC2h 20m
2026-07-24 DAL572 ATL → BOS Jul 24, 11:55 UTCJul 24, 14:30 UTC2h 35m
2026-07-24 DAL2503 SAN → SEA Jul 24, 01:25 UTCJul 24, 03:05 UTC1h 40m
2026-07-23 DAL2503 SAN → SEA Jul 23, 21:20 UTCJul 23, 23:25 UTC2h 5m
2026-07-23 DAL2461 BOS → RSW Jul 23, 17:00 UTCJul 23, 19:35 UTC2h 35m
2026-07-23 DAL1368 JFK → MIA Jul 23, 13:15 UTCJul 23, 15:50 UTC2h 35m
2026-07-23 DAL1394 PHL → ATL Jul 23, 01:05 UTCJul 23, 04:10 UTC3h 5m
2026-07-22 DAL2405 MSP → PHL Jul 22, 21:05 UTCJul 22, 23:50 UTC2h 45m
2026-07-22 DAL2140 SYR → ATL Jul 22, 16:00 UTCJul 22, 19:05 UTC3h 5m
2026-07-22 DAL2140 SYR → ATL Jul 22, 15:59 UTCJul 22, 19:05 UTC3h 6m
2026-07-21 DAL2673 PVD → ATL Jul 21, 16:25 UTCJul 21, 18:40 UTC2h 15m
2026-07-21 DAL1493 DCA → MSP Jul 21, 12:00 UTCJul 21, 14:35 UTC2h 35m
2026-07-21 DAL1493 DCA → MSP Jul 21, 11:55 UTCJul 21, 14:36 UTC2h 41m
2026-07-21 DAL2962 MSP → DCA Jul 21, 00:10 UTCJul 21, 01:57 UTC1h 47m
2026-07-21 DAL2962 MSP → DCA Jul 21, 00:15 UTCJul 21, 02:00 UTC1h 45m
2026-07-20 DAL2006 ATL → CMH Jul 20, 21:30 UTCJul 20, 22:25 UTC55m
2026-07-20 DAL2006 ATL → CMH Jul 20, 19:35 UTCJul 20, 20:25 UTC50m
2026-07-19 DAL2617 - Jul 19, 22:55 UTCJul 20, 01:15 UTC2h 20m
2026-07-19 DAL2930 MSP → LGA Jul 19, 18:15 UTCJul 19, 21:25 UTC3h 10m
2026-07-19 DAL2252 - Jul 19, 14:55 UTCJul 19, 16:30 UTC1h 35m
2026-07-18 DAL1544 MSP → ORD Jul 18, 12:55 UTCJul 18, 14:00 UTC1h 5m
2026-07-17 DAL2565 - Jul 17, 23:45 UTCJul 18, 01:54 UTC2h 10m
2026-07-17 DAL2565 BWI → MSP Jul 17, 23:43 UTCJul 18, 01:50 UTC2h 7m
2026-07-17 DAL2565 MSP → BWI Jul 17, 20:40 UTCJul 17, 22:49 UTC2h 10m
2026-07-17 DAL2958 DCA → MSP Jul 17, 16:29 UTCJul 17, 18:40 UTC2h 10m
2026-07-17 DAL2958 MSP → DCA Jul 17, 12:55 UTCJul 17, 15:00 UTC2h 5m
2026-07-16 DAL1608 - Jul 16, 17:49 UTCJul 16, 18:55 UTC1h 5m
2026-07-16 DAL1608 - Jul 16, 15:35 UTCJul 16, 16:30 UTC55m
2026-07-15 DAL2679 - Jul 15, 20:00 UTCJul 15, 22:15 UTC2h 15m
2026-07-15 DAL2679 - Jul 15, 19:45 UTCJul 15, 19:50 UTC5m
2026-07-15 DAL2679 MSP → PHL Jul 15, 16:20 UTCJul 15, 18:35 UTC2h 15m
2026-07-14 DAL2617 - Jul 14, 23:05 UTCJul 15, 01:15 UTC2h 10m
2026-07-14 DAL2930 - Jul 14, 18:30 UTCJul 14, 21:55 UTC3h 25m
2026-07-14 DAL2252 - Jul 14, 14:35 UTCJul 14, 16:20 UTC1h 45m
2026-07-14 DAL2252 ORD → LGA Jul 14, 14:32 UTCJul 14, 16:21 UTC1h 49m
2026-07-14 DAL1544 MSP → ORD Jul 14, 12:04 UTCJul 14, 13:07 UTC1h 3m
2026-07-14 DAL2565 MSP → ORD Jul 14, 12:05 UTCJul 14, 13:20 UTC1h 15m
2026-07-13 DAL2565 - Jul 13, 23:25 UTCJul 14, 01:25 UTC2h 0m
2026-07-13 DAL2565 BWI → MSP Jul 13, 23:22 UTCJul 14, 01:22 UTC2h 0m
2026-07-13 DAL2565 - Jul 13, 19:50 UTCJul 13, 21:55 UTC2h 5m
2026-07-13 DAL2185 - Jul 13, 15:10 UTCJul 13, 18:25 UTC3h 15m
2026-07-13 DAL2107 - Jul 13, 00:01 UTCJul 13, 03:05 UTC3h 5m
2026-07-12 DAL475 - Jul 12, 19:50 UTCJul 12, 22:45 UTC2h 55m
2026-07-12 DAL475 ILM → MSP Jul 12, 19:47 UTCJul 12, 22:36 UTC2h 49m

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 N323DU page for operator, model, and routing details .

Mode-S A379D3 frequently asked

What is Mode-S code A379D3?
A379D3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N323DU.
Where is Mode-S A379D3 registered?
Mode-S code A379D3 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 A379D3 broadcasting right now?
Mode-S A379D3 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A379D3, octal 50674723, decimal 10,713,555.
What flights does A379D3 operate?
Mode-S A379D3 has broadcast 20 distinct callsigns, including DAL928, DAL675, DAL303, DAL2677, DAL2412.