Apparatus

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sensors Mode-S transponder

A42020

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N365NW · AIRBUS A-320 · operated by DELTA AIR LINES INC

Hex
A42020
Octal
51020040
Decimal
10,756,128
Country
US
Tail
N365NW
Type
A320
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
516
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A42020.

Country allocation

The ICAO 24-bit address A42020 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
DAL1408 - 11 2026-07-18
DAL926 - 10 2026-07-17
DAL2463 Delta Air Lines 9 2026-07-24
DAL2688 Delta Air Lines 8 2026-06-05
DAL2687 Delta Air Lines 8 2026-06-05
DAL2010 - 8 2026-07-06
DAL2009 - 8 2026-07-17
DAL1996 - 8 2026-07-06
DAL1676 - 8 2026-07-15
DAL1375 - 8 2026-06-30
DAL735 Delta Air Lines 7 2026-07-21
DAL3074 - 7 2026-07-15
DAL2383 Delta Air Lines 7 2026-07-22
DAL2047 - 7 2026-06-30
DAL1157 - 7 2026-07-06
DAL1121 Delta Air Lines 7 2026-07-08
DAL832 - 6 2026-06-17
DAL3162 - 6 2026-07-15
DAL2690 - 6 2026-07-15
DAL2511 - 6 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2581 SFO → LAX Jul 26, 20:30 UTCJul 26, 22:00 UTC1h 30m
2026-07-26 DAL1754 DTW → MBJ Jul 26, 18:05 UTCJul 26, 18:55 UTC50m
2026-07-26 DAL1754 DTW → MBJ Jul 26, 18:01 UTCJul 26, 18:58 UTC57m
2026-07-26 DAL2304 BDL → MSP Jul 26, 13:55 UTCJul 26, 16:30 UTC2h 35m
2026-07-26 DAL2304 BDL → MSP Jul 26, 13:52 UTCJul 26, 16:28 UTC2h 36m
2026-07-25 DAL2392 DTW → BOS Jul 25, 22:15 UTCJul 26, 01:05 UTC2h 50m
2026-07-25 DAL2392 DTW → BOS Jul 25, 18:40 UTCJul 25, 20:55 UTC2h 15m
2026-07-25 DAL954 SFO → SLC Jul 25, 15:05 UTCJul 25, 16:40 UTC1h 35m
2026-07-25 DAL954 SFO → SLC Jul 25, 15:04 UTCJul 25, 16:41 UTC1h 37m
2026-07-25 DAL954 SFO → SLC Jul 25, 12:25 UTCJul 25, 13:40 UTC1h 15m
2026-07-25 DAL2237 SDF → ATL Jul 25, 10:10 UTCJul 25, 10:55 UTC45m
2026-07-24 DAL2278 ATL → IAD Jul 24, 23:55 UTCJul 25, 00:40 UTC45m
2026-07-24 DAL2463 MIA → DCA Jul 24, 20:00 UTCJul 24, 22:40 UTC2h 40m
2026-07-24 DAL2463 MIA → DCA Jul 24, 15:40 UTCJul 24, 17:50 UTC2h 10m
2026-07-24 DAL1276 DFW → MSP Jul 24, 12:10 UTCJul 24, 14:10 UTC2h 0m
2026-07-23 DAL2796 DEN → LGA Jul 23, 23:50 UTCJul 24, 01:55 UTC2h 5m
2026-07-23 DAL2796 DEN → LGA Jul 23, 23:47 UTCJul 24, 01:55 UTC2h 8m
2026-07-23 DAL2882 BOS → TPA Jul 23, 20:05 UTCJul 23, 22:10 UTC2h 5m
2026-07-23 DAL2882 BOS → TPA Jul 23, 16:45 UTCJul 23, 18:40 UTC1h 55m
2026-07-23 DAL1291 HSV → ATL Jul 23, 13:05 UTCJul 23, 15:20 UTC2h 15m
2026-07-23 DAL1291 HSV → ATL Jul 23, 13:02 UTCJul 23, 15:17 UTC2h 15m
2026-07-23 DAL2967 MYR → ATL Jul 23, 00:55 UTCJul 23, 02:50 UTC1h 55m
2026-07-22 DAL2383 LAS → SEA Jul 22, 20:20 UTCJul 22, 23:30 UTC3h 10m
2026-07-22 DAL2383 LAS → SEA Jul 22, 15:05 UTCJul 22, 18:55 UTC3h 50m
2026-07-22 DAL2403 CMH → MSP Jul 22, 11:15 UTCJul 22, 12:40 UTC1h 25m
2026-07-22 DAL1356 TPA → LGA Jul 22, 01:50 UTCJul 22, 03:05 UTC1h 15m
2026-07-21 DAL1842 PVR → ATL Jul 21, 23:10 UTCJul 22, 00:30 UTC1h 20m
2026-07-21 DAL735 LGA → ATL Jul 21, 18:50 UTCJul 21, 21:05 UTC2h 15m
2026-07-21 DAL735 LGA → ATL Jul 21, 18:48 UTCJul 21, 20:59 UTC2h 11m
2026-07-21 DAL2970 ATL → MKE Jul 21, 15:30 UTCJul 21, 17:20 UTC1h 50m
2026-07-21 DAL1242 AUS → MSP Jul 21, 11:15 UTCJul 21, 13:45 UTC2h 30m
2026-07-21 DAL2749 MSP → AUS Jul 21, 01:00 UTCJul 21, 03:00 UTC2h 0m
2026-07-20 DAL1853 GEG → MSP Jul 20, 21:10 UTCJul 20, 23:20 UTC2h 10m
2026-07-20 DAL1853 GEG → MSP Jul 20, 21:07 UTCJul 20, 23:17 UTC2h 10m
2026-07-20 DAL1853 MSP → GEG Jul 20, 17:10 UTCJul 20, 20:00 UTC2h 50m
2026-07-20 DAL1751 - Jul 20, 01:00 UTCJul 20, 02:45 UTC1h 45m
2026-07-19 DAL2050 ATL → BUF Jul 19, 22:10 UTCJul 19, 23:50 UTC1h 40m
2026-07-19 DAL573 - Jul 19, 16:20 UTCJul 19, 16:50 UTC30m
2026-07-19 DAL573 - Jul 19, 14:20 UTCJul 19, 14:50 UTC30m
2026-07-19 DAL2557 HOU → ATL Jul 19, 11:10 UTCJul 19, 12:50 UTC1h 40m
2026-07-19 DAL2557 HOU → ATL Jul 19, 11:10 UTCJul 19, 12:53 UTC1h 43m
2026-07-19 DAL2051 - Jul 19, 03:10 UTCJul 19, 04:45 UTC1h 35m
2026-07-18 DAL1408 - Jul 18, 20:25 UTCJul 18, 22:35 UTC2h 10m
2026-07-18 DAL1408 ATL → SAT Jul 18, 16:30 UTCJul 18, 18:25 UTC1h 55m
2026-07-18 DAL455 - Jul 18, 13:40 UTCJul 18, 14:55 UTC1h 15m
2026-07-18 DAL325 ATL → DCA Jul 18, 03:45 UTCJul 18, 05:05 UTC1h 20m
2026-07-18 DAL325 ATL → DCA Jul 18, 03:43 UTCJul 18, 05:03 UTC1h 20m
2026-07-17 DAL2009 BOS → RSW Jul 17, 22:20 UTCJul 18, 00:35 UTC2h 15m
2026-07-17 DAL2009 - Jul 17, 18:00 UTCJul 17, 19:55 UTC1h 55m
2026-07-17 DAL926 DCA → ATL Jul 17, 14:30 UTCJul 17, 15:44 UTC1h 15m

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 N365NW page for operator, model, and routing details .

Mode-S A42020 frequently asked

What is Mode-S code A42020?
A42020 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N365NW.
Where is Mode-S A42020 registered?
Mode-S code A42020 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 A42020 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 A42020, octal 51020040, decimal 10,756,128.
What flights does A42020 operate?
Mode-S A42020 has broadcast 20 distinct callsigns, including DAL1408, DAL926, DAL2463, DAL2688, DAL2687.