Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3DFEB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N349NB · AIRBUS A-319 · operated by DELTA AIR LINES INC

Hex
A3DFEB
Octal
50757753
Decimal
10,739,691
Country
US
Tail
N349NB
Type
A319
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
553
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A3DFEB.

Country allocation

The ICAO 24-bit address A3DFEB 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
DAL2282 - 12 2026-07-05
DAL950 Delta Air Lines 11 2026-07-26
DAL360 Delta Air Lines 10 2026-07-26
DAL2975 Delta Air Lines 9 2026-05-29
DAL2168 - 8 2026-07-11
DAL1649 - 8 2026-07-25
DAL1472 - 8 2026-07-17
DAL1438 Delta Air Lines 8 2026-06-01
DAL2958 Delta Air Lines 7 2026-05-14
DAL2785 Delta Air Lines 7 2026-06-17
DAL2459 Delta Air Lines 7 2026-05-29
DAL2008 Delta Air Lines 7 2026-05-05
DAL946 Delta Air Lines 6 2026-05-31
DAL2983 Delta Air Lines 6 2026-05-15
DAL2800 Delta Air Lines 6 2026-04-28
DAL2766 Delta Air Lines 6 2026-06-06
DAL2568 Delta Air Lines 6 2026-04-19
DAL2551 Delta Air Lines 6 2026-05-31
DAL2337 Delta Air Lines 6 2026-06-06
DAL2314 Delta Air Lines 6 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL360 ATL → LGA Jul 26, 20:10 UTCJul 26, 21:30 UTC1h 20m
2026-07-26 DAL360 ATL → LGA Jul 26, 17:15 UTCJul 26, 18:45 UTC1h 30m
2026-07-26 DAL1324 RSW → DTW Jul 26, 14:45 UTCJul 26, 16:00 UTC1h 15m
2026-07-26 DAL1324 RSW → DTW Jul 26, 11:55 UTCJul 26, 13:10 UTC1h 15m
2026-07-26 DAL950 ATL → SFO Jul 26, 00:00 UTCJul 26, 01:20 UTC1h 20m
2026-07-25 DAL950 ATL → SFO Jul 25, 21:20 UTCJul 25, 22:45 UTC1h 25m
2026-07-25 DAL950 ATL → SFO Jul 25, 21:20 UTCJul 25, 22:43 UTC1h 23m
2026-07-25 DAL1649 - Jul 25, 16:45 UTCJul 25, 18:25 UTC1h 40m
2026-07-25 DAL1649 - Jul 25, 13:20 UTCJul 25, 14:55 UTC1h 35m
2026-07-25 DAL950 ATL → SFO Jul 25, 00:50 UTCJul 25, 02:05 UTC1h 15m
2026-07-25 DAL950 ATL → SFO Jul 25, 00:46 UTCJul 25, 02:01 UTC1h 15m
2026-07-24 DAL950 ATL → SFO Jul 24, 21:00 UTCJul 24, 22:25 UTC1h 25m
2026-07-24 DAL2629 ATL → ILM Jul 24, 16:55 UTCJul 24, 19:30 UTC2h 35m
2026-07-24 DAL2597 ATL → YUL Jul 24, 13:15 UTCJul 24, 15:30 UTC2h 15m
2026-07-24 2127 IAD → ATL Jul 24, 10:10 UTCJul 24, 11:20 UTC1h 10m
2026-07-23 DAL1309 SLC → STL Jul 23, 23:30 UTCJul 24, 00:45 UTC1h 15m
2026-07-23 DAL1309 SLC → STL Jul 23, 23:27 UTCJul 24, 00:45 UTC1h 18m
2026-07-23 DAL360 ATL → LGA Jul 23, 20:15 UTCJul 23, 21:35 UTC1h 20m
2026-07-23 DAL360 ATL → LGA Jul 23, 20:13 UTCJul 23, 21:33 UTC1h 20m
2026-07-23 DAL360 ATL → LGA Jul 23, 17:25 UTCJul 23, 18:45 UTC1h 20m
2026-07-23 DAL1324 RSW → DTW Jul 23, 15:05 UTCJul 23, 16:20 UTC1h 15m
2026-07-23 DAL1324 RSW → DTW Jul 23, 11:55 UTCJul 23, 13:15 UTC1h 20m
2026-07-22 DAL2314 BOS → LAS Jul 22, 23:10 UTCJul 23, 01:20 UTC2h 10m
2026-07-22 DAL2314 BOS → LAS Jul 22, 18:15 UTCJul 22, 20:25 UTC2h 10m
2026-07-22 DAL3047 MYR → ATL Jul 22, 15:50 UTCJul 22, 16:35 UTC45m
2026-07-22 DAL3047 MYR → ATL Jul 22, 13:45 UTCJul 22, 14:25 UTC40m
2026-07-21 DAL1866 MTY → ATL Jul 21, 18:30 UTCJul 21, 20:50 UTC2h 20m
2026-07-21 DAL1929 ATL → MTY Jul 21, 14:31 UTCJul 21, 16:52 UTC2h 21m
2026-07-21 DAL1929 ATL → MTY Jul 21, 14:35 UTCJul 21, 17:00 UTC2h 25m
2026-07-21 DAL1237 FSD → ATL Jul 21, 10:30 UTCJul 21, 12:25 UTC1h 55m
2026-07-21 DAL1237 FSD → ATL Jul 21, 10:27 UTCJul 21, 12:22 UTC1h 55m
2026-07-21 DAL1694 SLC → AUS Jul 21, 03:35 UTCJul 21, 04:10 UTC35m
2026-07-21 DAL2820 - Jul 21, 00:00 UTCJul 21, 02:20 UTC2h 20m
2026-07-20 DAL3158 RIC → ATL Jul 20, 21:30 UTCJul 20, 22:15 UTC45m
2026-07-20 DAL1072 JFK → DEN Jul 20, 15:10 UTCJul 20, 16:35 UTC1h 25m
2026-07-20 DAL1072 JFK → DEN Jul 20, 15:00 UTCJul 20, 16:32 UTC1h 32m
2026-07-20 DAL2815 ATL → EYW Jul 20, 01:17 UTCJul 20, 02:52 UTC1h 35m
2026-07-20 DAL2815 - Jul 20, 01:20 UTCJul 20, 02:50 UTC1h 30m
2026-07-19 DAL1649 GSP → ATL Jul 19, 20:56 UTCJul 19, 21:25 UTC29m
2026-07-19 DAL1649 - Jul 19, 16:25 UTCJul 19, 19:05 UTC2h 40m
2026-07-19 DAL1649 - Jul 19, 13:20 UTCJul 19, 14:55 UTC1h 35m
2026-07-19 DAL360 CLT → ATL Jul 19, 01:59 UTCJul 19, 02:35 UTC36m
2026-07-18 DAL360 - Jul 18, 21:55 UTCJul 19, 00:20 UTC2h 25m
2026-07-18 DAL360 ATL → DCA Jul 18, 17:40 UTCJul 18, 19:25 UTC1h 45m
2026-07-18 DAL2840 - Jul 18, 12:45 UTCJul 18, 14:45 UTC2h 0m
2026-07-17 DAL2659 ATL → PVD Jul 17, 22:35 UTCJul 18, 00:39 UTC2h 5m
2026-07-17 DAL1472 - Jul 17, 18:44 UTCJul 17, 20:15 UTC1h 30m
2026-07-17 DAL1472 EYW → ATL Jul 17, 18:35 UTCJul 17, 20:12 UTC1h 37m
2026-07-17 DAL1472 - Jul 17, 15:40 UTCJul 17, 17:09 UTC1h 30m
2026-07-17 DAL1072 - Jul 17, 12:00 UTCJul 17, 13:29 UTC1h 30m

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 N349NB page for operator, model, and routing details .

Mode-S A3DFEB frequently asked

What is Mode-S code A3DFEB?
A3DFEB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N349NB.
Where is Mode-S A3DFEB registered?
Mode-S code A3DFEB 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 A3DFEB broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3DFEB, octal 50757753, decimal 10,739,691.
What flights does A3DFEB operate?
Mode-S A3DFEB has broadcast 20 distinct callsigns, including DAL2282, DAL950, DAL360, DAL2975, DAL2168.