Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB3D41

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N823NW · AIRBUS A-330-300 · operated by DELTA AIR LINES INC

Hex
AB3D41
Octal
52636501
Decimal
11,222,337
Country
US
Tail
N823NW
Type
A333
No current signal · last broadcast Jul 26, 21:25 UTC
Flights observed
309
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:25 UTC

Last known position

Most recent position reported by Mode-S AB3D41.

Country allocation

The ICAO 24-bit address AB3D41 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
DAL230 Delta Air Lines 16 2026-07-25
DAL231 Delta Air Lines 15 2026-07-25
DAL837 - 14 2026-07-13
DAL75 - 13 2026-07-17
DAL309 - 13 2026-07-15
DAL128 Delta Air Lines 13 2026-06-24
DAL129 Delta Air Lines 12 2026-06-25
DAL313 - 11 2026-07-14
DAL312 - 10 2026-07-14
DAL105 - 10 2026-07-12
DAL74 - 9 2026-07-16
DAL958 - 8 2026-06-27
DAL151 - 8 2026-07-02
DAL135 Delta Air Lines 8 2026-05-18
DAL104 - 8 2026-07-13
DAL310 Delta Air Lines 7 2026-05-01
DAL307 Delta Air Lines 7 2026-05-02
DAL185 Delta Air Lines 7 2026-07-26
DAL184 Delta Air Lines 7 2026-07-26
DAL182 - 7 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL185 MXP → JFK Jul 26, 13:03 UTCJul 26, 21:28 UTC8h 25m
2026-07-26 DAL185 MXP → JFK Jul 26, 13:05 UTCJul 26, 14:15 UTC1h 10m
2026-07-26 DAL184 JFK → MXP Jul 26, 02:13 UTCJul 26, 09:45 UTC7h 32m
2026-07-26 DAL184 JFK → MXP Jul 26, 02:15 UTCJul 26, 09:50 UTC7h 36m
2026-07-25 DAL231 CDG → RDU Jul 25, 13:30 UTCJul 25, 15:45 UTC2h 15m
2026-07-25 DAL231 CDG → RDU Jul 25, 13:27 UTCJul 25, 22:00 UTC8h 33m
2026-07-25 DAL230 RDU → CDG Jul 25, 03:20 UTCJul 25, 11:03 UTC7h 43m
2026-07-25 DAL230 RDU → CDG Jul 25, 03:25 UTCJul 25, 11:05 UTC7h 40m
2026-07-24 DAL9962 DFW → BOS Jul 24, 23:25 UTCJul 25, 00:45 UTC1h 20m
2026-07-23 DAL207 FCO → DTW Jul 23, 07:20 UTCJul 23, 16:50 UTC9h 30m
2026-07-23 DAL207 FCO → DTW Jul 23, 07:25 UTCJul 23, 17:00 UTC9h 35m
2026-07-22 DAL112 BOS → FCO Jul 22, 21:50 UTCJul 23, 05:20 UTC7h 30m
2026-07-22 DAL277 - Jul 22, 11:10 UTCJul 22, 17:50 UTC6h 40m
2026-07-22 DAL276 HND → DTW Jul 22, 00:40 UTCJul 22, 02:00 UTC1h 20m
2026-07-21 DAL251 - Jul 21, 13:25 UTCJul 21, 20:45 UTC7h 20m
2026-07-21 DAL251 BCN → BOS Jul 21, 13:22 UTCJul 21, 20:47 UTC7h 25m
2026-07-21 DAL194 ATL → BCN Jul 21, 02:15 UTCJul 21, 10:55 UTC8h 40m
2026-07-21 DAL194 ATL → BCN Jul 21, 02:11 UTCJul 21, 10:57 UTC8h 46m
2026-07-20 DAL193 VCE → ATL Jul 20, 12:40 UTCJul 20, 22:25 UTC9h 45m
2026-07-20 DAL193 VCE → ATL Jul 20, 12:36 UTCJul 20, 22:23 UTC9h 47m
2026-07-20 DAL192 ATL → VCE Jul 20, 00:41 UTCJul 20, 09:46 UTC9h 5m
2026-07-20 DAL192 - Jul 20, 00:45 UTCJul 20, 03:35 UTC2h 50m
2026-07-18 DAL177 DUB → ATL Jul 18, 11:05 UTCJul 18, 19:00 UTC7h 55m
2026-07-18 DAL176 ATL → DUB Jul 18, 01:20 UTCJul 18, 08:50 UTC7h 31m
2026-07-17 DAL75 AMS → ATL Jul 17, 11:55 UTCJul 17, 20:58 UTC9h 3m
2026-07-17 DAL75 - Jul 17, 12:00 UTCJul 17, 21:05 UTC9h 5m
2026-07-17 DAL162 MSP → AMS Jul 17, 01:09 UTCJul 17, 09:04 UTC7h 55m
2026-07-16 DAL163 - Jul 16, 11:05 UTCJul 16, 19:14 UTC8h 10m
2026-07-16 DAL74 - Jul 16, 00:05 UTCJul 16, 03:05 UTC3h 0m
2026-07-16 DAL74 ATL → AMS Jul 16, 00:03 UTCJul 16, 08:25 UTC8h 22m
2026-07-15 DAL309 - Jul 15, 05:25 UTCJul 15, 09:55 UTC4h 30m
2026-07-15 DAL309 - Jul 15, 01:35 UTCJul 15, 01:55 UTC20m
2026-07-14 DAL312 - Jul 14, 23:15 UTCJul 14, 23:25 UTC10m
2026-07-14 DAL312 MSP → HNL Jul 14, 15:25 UTCJul 14, 23:22 UTC7h 57m
2026-07-14 DAL312 - Jul 14, 15:25 UTCJul 14, 19:20 UTC3h 55m
2026-07-14 DAL313 - Jul 14, 06:40 UTCJul 14, 10:05 UTC3h 25m
2026-07-14 DAL313 - Jul 14, 02:45 UTCJul 14, 03:05 UTC20m
2026-07-13 DAL837 - Jul 13, 14:15 UTCJul 13, 22:55 UTC8h 40m
2026-07-13 DAL104 - Jul 13, 02:15 UTCJul 13, 11:20 UTC9h 5m
2026-07-13 DAL104 GRU → ATL Jul 13, 02:15 UTCJul 13, 11:28 UTC9h 13m
2026-07-12 DAL105 - Jul 12, 00:50 UTCJul 12, 10:20 UTC9h 30m
2026-07-11 DAL175 - Jul 11, 11:35 UTCJul 11, 12:15 UTC40m
2026-07-11 DAL175 MXP → ATL Jul 11, 11:32 UTCJul 11, 21:30 UTC9h 58m
2026-07-10 DAL174 ATL → MXP Jul 10, 22:35 UTCJul 11, 07:25 UTC8h 50m
2026-07-10 DAL174 ATL → MXP Jul 10, 22:33 UTCJul 11, 07:11 UTC8h 38m
2026-07-10 DAL309 - Jul 10, 05:35 UTCJul 10, 09:50 UTC4h 15m
2026-07-10 DAL309 - Jul 10, 01:40 UTCJul 10, 01:50 UTC10m
2026-07-09 DAL312 - Jul 9, 15:25 UTCJul 9, 23:20 UTC7h 55m
2026-07-09 DAL313 - Jul 9, 02:40 UTCJul 9, 09:40 UTC7h 0m
2026-07-08 DAL837 - Jul 8, 14:50 UTCJul 8, 23:45 UTC8h 55m

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 N823NW page for operator, model, and routing details .

Mode-S AB3D41 frequently asked

What is Mode-S code AB3D41?
AB3D41 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N823NW.
Where is Mode-S AB3D41 registered?
Mode-S code AB3D41 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 AB3D41 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB3D41, octal 52636501, decimal 11,222,337.
What flights does AB3D41 operate?
Mode-S AB3D41 has broadcast 20 distinct callsigns, including DAL230, DAL231, DAL837, DAL75, DAL309.