Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A44031

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N373NW · AIRBUS A-320 · operated by DELTA AIR LINES INC

Hex
A44031
Octal
51040061
Decimal
10,764,337
Country
US
Tail
N373NW
Type
A320
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
584
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A44031.

Country allocation

The ICAO 24-bit address A44031 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
DAL1337 - 21 2026-07-06
DAL2463 Delta Air Lines 17 2026-07-25
DAL2458 Delta Air Lines 14 2026-05-04
DAL2682 Delta Air Lines 12 2026-05-04
DAL866 Delta Air Lines 11 2026-06-06
DAL2392 Delta Air Lines 11 2026-07-23
DAL1377 - 11 2026-07-05
DAL1312 - 11 2026-07-05
DAL1145 Delta Air Lines 11 2026-06-06
DAL2687 Delta Air Lines 10 2026-05-22
DAL2383 Delta Air Lines 9 2026-07-20
DAL1427 Delta Air Lines 9 2026-05-31
DAL1042 - 9 2026-06-27
DAL2977 Delta Air Lines 8 2026-07-22
DAL2970 Delta Air Lines 8 2026-07-19
DAL2875 Delta Air Lines 8 2026-07-23
DAL2688 Delta Air Lines 8 2026-05-22
DAL2575 Delta Air Lines 8 2026-07-24
DAL1370 - 8 2026-07-06
DAL2982 Delta Air Lines 7 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2982 ORD → BOS Jul 26, 21:10 UTCJul 26, 22:00 UTC50m
2026-07-26 DAL2982 ORD → BOS Jul 26, 16:50 UTCJul 26, 19:25 UTC2h 35m
2026-07-26 DAL2492 JFK → JAX Jul 26, 13:20 UTCJul 26, 15:20 UTC2h 0m
2026-07-25 DAL2485 BOS → BUF Jul 25, 23:51 UTCJul 26, 02:21 UTC2h 30m
2026-07-25 DAL2485 BOS → BUF Jul 25, 23:55 UTCJul 26, 02:25 UTC2h 30m
2026-07-25 DAL2463 MIA → DCA Jul 25, 19:20 UTCJul 25, 21:55 UTC2h 35m
2026-07-25 DAL2463 MIA → DCA Jul 25, 15:40 UTCJul 25, 17:50 UTC2h 10m
2026-07-25 DAL2808 BOI → MSP Jul 25, 12:15 UTCJul 25, 14:25 UTC2h 10m
2026-07-25 DAL2488 BOS → RDU Jul 25, 03:00 UTCJul 25, 05:40 UTC2h 40m
2026-07-24 DAL2575 EWR → ATL Jul 24, 23:05 UTCJul 24, 23:55 UTC50m
2026-07-24 DAL2575 EWR → ATL Jul 24, 21:54 UTCJul 25, 00:05 UTC2h 11m
2026-07-24 DAL2575 EWR → ATL Jul 24, 18:10 UTCJul 24, 19:20 UTC1h 10m
2026-07-24 DAL954 SFO → SLC Jul 24, 15:15 UTCJul 24, 16:50 UTC1h 35m
2026-07-24 DAL954 SFO → SLC Jul 24, 12:45 UTCJul 24, 14:05 UTC1h 20m
2026-07-23 DAL2392 DTW → BOS Jul 23, 22:05 UTCJul 24, 00:45 UTC2h 40m
2026-07-23 DAL2392 DTW → BOS Jul 23, 18:15 UTCJul 23, 20:30 UTC2h 15m
2026-07-23 DAL2875 IND → ATL Jul 23, 13:10 UTCJul 23, 15:50 UTC2h 40m
2026-07-22 DAL2977 JFK → SAN Jul 22, 23:50 UTCJul 23, 03:15 UTC3h 25m
2026-07-22 DAL1853 MSP → PUJ Jul 22, 19:55 UTCJul 22, 22:10 UTC2h 15m
2026-07-22 DAL1853 MSP → PUJ Jul 22, 19:50 UTCJul 22, 22:09 UTC2h 19m
2026-07-22 DAL1853 MSP → PUJ Jul 22, 15:35 UTCJul 22, 18:25 UTC2h 50m
2026-07-22 DAL1276 DFW → MSP Jul 22, 12:05 UTCJul 22, 14:00 UTC1h 55m
2026-07-22 DAL2796 DEN → LGA Jul 22, 00:05 UTCJul 22, 02:15 UTC2h 10m
2026-07-21 DAL2882 BOS → TPA Jul 21, 20:05 UTCJul 21, 22:15 UTC2h 10m
2026-07-21 DAL2882 BOS → TPA Jul 21, 16:45 UTCJul 21, 18:45 UTC2h 0m
2026-07-21 DAL1291 HSV → ATL Jul 21, 12:55 UTCJul 21, 15:00 UTC2h 5m
2026-07-21 DAL2967 MYR → ATL Jul 21, 01:05 UTCJul 21, 02:55 UTC1h 50m
2026-07-20 DAL2383 LAS → SEA Jul 20, 20:25 UTCJul 20, 23:35 UTC3h 10m
2026-07-20 DAL2383 LAS → SEA Jul 20, 15:15 UTCJul 20, 18:55 UTC3h 40m
2026-07-20 DAL2403 CMH → MSP Jul 20, 11:05 UTCJul 20, 12:45 UTC1h 40m
2026-07-20 DAL1356 TPA → LGA Jul 20, 01:45 UTCJul 20, 03:00 UTC1h 15m
2026-07-19 DAL1842 - Jul 19, 22:20 UTCJul 19, 23:45 UTC1h 25m
2026-07-19 DAL1842 DTW → MSP Jul 19, 22:16 UTCJul 19, 23:40 UTC1h 24m
2026-07-19 DAL735 LGA → ATL Jul 19, 18:30 UTCJul 19, 20:50 UTC2h 20m
2026-07-19 DAL2970 ATL → MKE Jul 19, 15:16 UTCJul 19, 17:04 UTC1h 48m
2026-07-19 DAL2970 ATL → MKE Jul 19, 15:20 UTCJul 19, 17:10 UTC1h 50m
2026-07-19 DAL1242 AUS → MSP Jul 19, 11:20 UTCJul 19, 13:35 UTC2h 15m
2026-07-19 DAL2749 MSP → AUS Jul 19, 00:35 UTCJul 19, 02:45 UTC2h 10m
2026-07-18 DAL2203 DTW → MSP Jul 18, 21:15 UTCJul 18, 22:40 UTC1h 25m
2026-07-18 DAL2333 - Jul 18, 16:25 UTCJul 18, 18:20 UTC1h 55m
2026-07-18 DAL2333 - Jul 18, 12:40 UTCJul 18, 14:30 UTC1h 50m
2026-07-18 DAL2964 - Jul 18, 10:00 UTCJul 18, 11:25 UTC1h 25m
2026-07-18 DAL2964 BDL → DTW Jul 18, 09:56 UTCJul 18, 11:22 UTC1h 26m
2026-07-18 DAL2989 - Jul 18, 01:39 UTCJul 18, 02:50 UTC1h 11m
2026-07-18 DAL2989 DTW → BDL Jul 18, 01:37 UTCJul 18, 02:48 UTC1h 11m
2026-07-17 DAL1435 MSP → DTW Jul 17, 22:45 UTCJul 18, 00:00 UTC1h 15m
2026-07-17 DAL2610 MSP → MSP Jul 17, 03:10 UTCJul 17, 14:10 UTC11h 0m
2026-07-16 DAL2392 - Jul 16, 22:40 UTCJul 17, 01:20 UTC2h 40m
2026-07-16 DAL2392 - Jul 16, 18:29 UTCJul 16, 21:00 UTC2h 30m
2026-07-16 DAL2875 YVR → MSP Jul 16, 13:10 UTCJul 16, 16:00 UTC2h 50m

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 N373NW page for operator, model, and routing details .

Mode-S A44031 frequently asked

What is Mode-S code A44031?
A44031 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N373NW.
Where is Mode-S A44031 registered?
Mode-S code A44031 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 A44031 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A44031, octal 51040061, decimal 10,764,337.
What flights does A44031 operate?
Mode-S A44031 has broadcast 20 distinct callsigns, including DAL1337, DAL2463, DAL2458, DAL2682, DAL866.