Apparatus

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sensors Mode-S transponder

A3F4EA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N354NW · AIRBUS A-320 · operated by DELTA AIR LINES INC

Hex
A3F4EA
Octal
50772352
Decimal
10,745,066
Country
US
Tail
N354NW
Type
A320
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
579
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A3F4EA.

Country allocation

The ICAO 24-bit address A3F4EA 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
DAL2800 Delta Air Lines 13 2026-07-25
DAL380 Delta Air Lines 12 2026-06-06
DAL1145 - 12 2026-07-21
DAL2996 - 10 2026-07-21
DAL775 Delta Air Lines 9 2026-06-10
DAL2994 Delta Air Lines 9 2026-07-20
DAL2796 Delta Air Lines 9 2026-07-24
DAL2660 Delta Air Lines 9 2026-07-21
DAL2392 Delta Air Lines 9 2026-07-26
DAL1360 - 9 2026-07-10
DAL1343 Delta Air Lines 9 2026-05-24
DAL926 Delta Air Lines 8 2026-06-13
DAL1408 Delta Air Lines 8 2026-06-05
DAL950 Delta Air Lines 7 2026-05-01
DAL850 Delta Air Lines 7 2026-06-12
DAL325 Delta Air Lines 7 2026-06-08
DAL1121 Delta Air Lines 7 2026-07-05
DAL832 Delta Air Lines 6 2026-06-11
DAL360 Delta Air Lines 6 2026-06-13
DAL2989 - 6 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2392 DTW → BOS Jul 26, 22:00 UTCJul 26, 22:30 UTC30m
2026-07-26 DAL2392 DTW → BOS Jul 26, 18:15 UTCJul 26, 20:30 UTC2h 15m
2026-07-26 DAL954 SFO → SLC Jul 26, 15:10 UTCJul 26, 16:45 UTC1h 35m
2026-07-26 DAL954 SFO → SLC Jul 26, 12:30 UTCJul 26, 13:45 UTC1h 15m
2026-07-25 DAL2935 MSP → SAT Jul 25, 23:40 UTCJul 26, 01:45 UTC2h 5m
2026-07-25 DAL2800 SLC → DFW Jul 25, 19:55 UTCJul 25, 22:00 UTC2h 5m
2026-07-25 DAL2970 ATL → MKE Jul 25, 16:10 UTCJul 25, 18:00 UTC1h 50m
2026-07-25 DAL2970 ATL → MKE Jul 25, 16:09 UTCJul 25, 17:53 UTC1h 44m
2026-07-25 DAL1276 DFW → MSP Jul 25, 12:08 UTCJul 25, 14:11 UTC2h 3m
2026-07-25 DAL1276 DFW → MSP Jul 25, 12:10 UTCJul 25, 14:10 UTC2h 0m
2026-07-24 DAL2796 DEN → LGA Jul 24, 23:55 UTCJul 25, 02:05 UTC2h 10m
2026-07-24 DAL2800 SLC → DFW Jul 24, 19:40 UTCJul 24, 21:55 UTC2h 15m
2026-07-24 DAL2800 SLC → DFW Jul 24, 16:10 UTCJul 24, 18:15 UTC2h 5m
2026-07-24 DAL1645 LAX → PDX Jul 24, 13:20 UTCJul 24, 14:25 UTC1h 5m
2026-07-24 DAL1712 SLC → ORD Jul 24, 05:25 UTCJul 24, 06:30 UTC1h 5m
2026-07-24 DAL1712 SLC → ORD Jul 24, 05:22 UTCJul 24, 06:35 UTC1h 13m
2026-07-24 DAL2812 LAX → SFO Jul 24, 00:20 UTCJul 24, 02:30 UTC2h 10m
2026-07-23 DAL2971 MSP → DFW Jul 23, 21:05 UTCJul 23, 23:00 UTC1h 55m
2026-07-23 DAL2017 MKE → ATL Jul 23, 16:40 UTCJul 23, 18:50 UTC2h 10m
2026-07-23 DAL2017 MKE → ATL Jul 23, 16:38 UTCJul 23, 18:49 UTC2h 11m
2026-07-23 DAL1744 GEG → MSP Jul 23, 14:25 UTCJul 23, 15:15 UTC50m
2026-07-23 DAL2173 BOI → SLC Jul 23, 12:15 UTCJul 23, 12:55 UTC40m
2026-07-23 DAL2488 BOS → RDU Jul 23, 02:55 UTCJul 23, 05:35 UTC2h 40m
2026-07-22 DAL2900 JAX → LGA Jul 22, 23:25 UTCJul 23, 01:15 UTC1h 50m
2026-07-22 DAL1041 - Jul 22, 19:30 UTCJul 22, 21:50 UTC2h 20m
2026-07-22 DAL1041 DTW → DFW Jul 22, 19:27 UTCJul 22, 21:46 UTC2h 19m
2026-07-21 DAL1441 - Jul 21, 23:55 UTCJul 22, 02:00 UTC2h 5m
2026-07-21 DAL1543 - Jul 21, 20:00 UTCJul 21, 22:05 UTC2h 5m
2026-07-21 DAL1543 ATL → BDL Jul 21, 19:54 UTCJul 21, 22:05 UTC2h 11m
2026-07-21 DAL1145 - Jul 21, 15:45 UTCJul 21, 17:25 UTC1h 40m
2026-07-21 DAL1145 MYR → DTW Jul 21, 15:37 UTCJul 21, 17:20 UTC1h 43m
2026-07-21 DAL1145 - Jul 21, 12:55 UTCJul 21, 14:25 UTC1h 30m
2026-07-21 DAL2996 - Jul 21, 10:20 UTCJul 21, 11:35 UTC1h 15m
2026-07-21 DAL2996 ALB → DTW Jul 21, 10:17 UTCJul 21, 11:31 UTC1h 14m
2026-07-21 DAL2660 DTW → PHL Jul 21, 02:00 UTCJul 21, 03:10 UTC1h 10m
2026-07-20 DAL2994 SEA → SFO Jul 20, 22:40 UTCJul 21, 00:35 UTC1h 55m
2026-07-20 DAL2994 SEA → SFO Jul 20, 19:15 UTCJul 20, 21:05 UTC1h 50m
2026-07-20 DAL2333 - Jul 20, 15:55 UTCJul 20, 17:50 UTC1h 55m
2026-07-20 DAL2333 - Jul 20, 12:35 UTCJul 20, 14:15 UTC1h 40m
2026-07-20 DAL1484 MSP → DTW Jul 20, 01:50 UTCJul 20, 03:05 UTC1h 15m
2026-07-19 DAL2900 JAX → LGA Jul 19, 20:50 UTCJul 19, 22:50 UTC2h 0m
2026-07-19 DAL1041 - Jul 19, 17:05 UTCJul 19, 19:15 UTC2h 10m
2026-07-19 DAL1648 DEN → DTW Jul 19, 00:55 UTCJul 19, 03:30 UTC2h 35m
2026-07-18 DAL1648 DTW → DEN Jul 18, 21:05 UTCJul 18, 23:35 UTC2h 30m
2026-07-18 DAL1145 - Jul 18, 16:05 UTCJul 18, 17:30 UTC1h 25m
2026-07-18 DAL1145 MYR → DTW Jul 18, 15:57 UTCJul 18, 17:30 UTC1h 33m
2026-07-18 DAL1145 - Jul 18, 13:05 UTCJul 18, 14:20 UTC1h 15m
2026-07-18 DAL2996 - Jul 18, 10:15 UTCJul 18, 11:30 UTC1h 15m
2026-07-18 DAL2996 ALB → DTW Jul 18, 10:10 UTCJul 18, 11:24 UTC1h 14m
2026-07-18 DAL2660 DTW → PHL Jul 18, 02:25 UTCJul 18, 03:25 UTC1h 1m

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 N354NW page for operator, model, and routing details .

Mode-S A3F4EA frequently asked

What is Mode-S code A3F4EA?
A3F4EA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N354NW.
Where is Mode-S A3F4EA registered?
Mode-S code A3F4EA 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 A3F4EA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3F4EA, octal 50772352, decimal 10,745,066.
What flights does A3F4EA operate?
Mode-S A3F4EA has broadcast 20 distinct callsigns, including DAL2800, DAL380, DAL1145, DAL2996, DAL775.