Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3B3DF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N338DN · AIRBUS A-321 · operated by UMB BANK NA TRUSTEE

Hex
A3B3DF
Octal
50731737
Decimal
10,728,415
Country
US
Tail
N338DN
Type
A321
Broadcasting now · callsign DAL1073 · 37,000 ft
Flights observed
594
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Current position

A3B3DF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A3B3DF 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
DAL1579 Delta Air Lines 10 2026-07-25
DAL1946 - 8 2026-06-19
DAL1527 Delta Air Lines 8 2026-07-23
DAL1150 - 8 2026-07-12
DAL385 Delta Air Lines 7 2026-05-27
DAL1572 Delta Air Lines 7 2026-06-13
DAL1512 - 7 2026-07-10
DAL1458 - 7 2026-06-30
DAL1295 - 7 2026-07-11
DAL1099 - 7 2026-07-15
DAL664 Delta Air Lines 6 2026-07-26
DAL2562 - 6 2026-07-16
DAL1576 Delta Air Lines 6 2026-05-23
DAL1491 Delta Air Lines 6 2026-07-26
DAL1462 Delta Air Lines 6 2026-07-24
DAL1384 Delta Air Lines 6 2026-07-04
DAL1329 Delta Air Lines 6 2026-07-19
DAL1266 Delta Air Lines 6 2026-05-19
DAL959 - 5 2026-07-17
DAL893 - 5 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1491 CHS → BOS Jul 26, 20:00 UTCJul 26, 21:45 UTC1h 45m
2026-07-26 DAL664 SFO → JFK Jul 26, 17:15 UTCJul 26, 18:15 UTC1h 0m
2026-07-26 DAL664 SFO → JFK Jul 26, 14:45 UTCJul 26, 15:50 UTC1h 5m
2026-07-26 DAL1673 MIA → BOS Jul 26, 11:20 UTCJul 26, 13:00 UTC1h 40m
2026-07-26 DAL2552 MEM → DTW Jul 26, 02:12 UTCJul 26, 03:55 UTC1h 43m
2026-07-26 DAL2552 MEM → DTW Jul 26, 02:15 UTCJul 26, 04:00 UTC1h 45m
2026-07-25 DAL1397 FLL → BOS Jul 25, 22:10 UTCJul 26, 00:20 UTC2h 10m
2026-07-25 DAL1397 FLL → BOS Jul 25, 18:25 UTCJul 25, 20:15 UTC1h 50m
2026-07-25 DAL2999 RDU → BOS Jul 25, 15:25 UTCJul 25, 17:00 UTC1h 35m
2026-07-25 DAL2999 RDU → BOS Jul 25, 12:50 UTCJul 25, 14:20 UTC1h 30m
2026-07-25 DAL1579 IAH → LGA Jul 25, 04:35 UTCJul 25, 05:55 UTC1h 20m
2026-07-25 DAL1588 CHS → BOS Jul 25, 01:42 UTCJul 25, 03:07 UTC1h 25m
2026-07-25 DAL1588 CHS → BOS Jul 25, 01:45 UTCJul 25, 03:15 UTC1h 30m
2026-07-24 DAL2131 BOS → TPA Jul 24, 22:15 UTCJul 24, 23:50 UTC1h 35m
2026-07-24 DAL2131 BOS → TPA Jul 24, 17:40 UTCJul 24, 19:15 UTC1h 35m
2026-07-24 DAL1462 SFO → ATL Jul 24, 16:00 UTCJul 24, 16:05 UTC5m
2026-07-24 DAL1462 SFO → ATL Jul 24, 14:35 UTCJul 24, 16:05 UTC1h 30m
2026-07-24 DAL1462 SFO → ATL Jul 24, 14:30 UTCJul 24, 15:44 UTC1h 14m
2026-07-24 DAL1462 SFO → ATL Jul 24, 11:50 UTCJul 24, 12:55 UTC1h 5m
2026-07-24 DAL973 AUS → BOS Jul 24, 00:05 UTCJul 24, 02:25 UTC2h 20m
2026-07-23 DAL2595 BOS → JAX Jul 23, 20:00 UTCJul 23, 22:10 UTC2h 10m
2026-07-23 DAL2595 BOS → JAX Jul 23, 19:59 UTCJul 23, 22:03 UTC2h 4m
2026-07-23 DAL1527 AUS → SLC Jul 23, 17:10 UTCJul 23, 18:30 UTC1h 20m
2026-07-23 DAL1527 AUS → SLC Jul 23, 14:25 UTCJul 23, 15:45 UTC1h 20m
2026-07-23 DAL1344 AUS → ATL Jul 23, 10:35 UTCJul 23, 12:30 UTC1h 55m
2026-07-23 DAL1081 SFO → MSP Jul 23, 01:10 UTCJul 23, 02:55 UTC1h 45m
2026-07-22 DAL399 SLC → JFK Jul 22, 21:25 UTCJul 22, 23:35 UTC2h 10m
2026-07-22 DAL399 SLC → JFK Jul 22, 21:19 UTCJul 22, 23:38 UTC2h 19m
2026-07-22 DAL350 ATL → BOS Jul 22, 17:03 UTCJul 22, 19:06 UTC2h 3m
2026-07-22 DAL350 ATL → BNH Jul 22, 17:05 UTCJul 22, 19:15 UTC2h 10m
2026-07-22 DAL644 JFK → CUN Jul 22, 13:20 UTCJul 22, 15:00 UTC1h 40m
2026-07-22 DAL644 JFK → CUN Jul 22, 13:16 UTCJul 22, 14:58 UTC1h 42m
2026-07-21 DAL1131 JFK → TPA Jul 21, 23:00 UTCJul 22, 00:35 UTC1h 35m
2026-07-21 DAL1341 JFK → MIA Jul 21, 19:55 UTCJul 21, 21:15 UTC1h 20m
2026-07-21 DAL1341 JFK → MIA Jul 21, 16:45 UTCJul 21, 18:05 UTC1h 20m
2026-07-21 DAL644 JFK → CUN Jul 21, 13:20 UTCJul 21, 14:57 UTC1h 37m
2026-07-21 DAL644 JFK → CUN Jul 21, 13:20 UTCJul 21, 14:55 UTC1h 35m
2026-07-20 DAL1131 - Jul 20, 23:05 UTCJul 21, 00:35 UTC1h 29m
2026-07-20 DAL1341 JFK → MIA Jul 20, 20:20 UTCJul 20, 21:40 UTC1h 20m
2026-07-20 DAL1341 JFK → MIA Jul 20, 20:17 UTCJul 20, 21:39 UTC1h 22m
2026-07-20 DAL1341 JFK → MIA Jul 20, 16:45 UTCJul 20, 18:15 UTC1h 30m
2026-07-20 DAL2899 RDU → BOS Jul 20, 13:30 UTCJul 20, 15:20 UTC1h 50m
2026-07-20 DAL1170 SLC → AUS Jul 20, 00:55 UTCJul 20, 02:40 UTC1h 45m
2026-07-19 DAL1372 MCO → ATL Jul 19, 21:25 UTCJul 19, 22:25 UTC1h 0m
2026-07-19 DAL1372 ATL → MCO Jul 19, 18:05 UTCJul 19, 19:40 UTC1h 35m
2026-07-19 DAL1152 MSP → SFO Jul 19, 14:25 UTCJul 19, 15:55 UTC1h 30m
2026-07-19 DAL1329 SLC → DFW Jul 19, 03:30 UTCJul 19, 03:40 UTC10m
2026-07-19 DAL1329 SLC → DFW Jul 19, 03:15 UTCJul 19, 03:20 UTC5m
2026-07-19 DAL1329 SLC → DFW Jul 19, 03:05 UTCJul 19, 03:10 UTC5m
2026-07-19 DAL1329 SLC → DFW Jul 19, 00:30 UTCJul 19, 02:05 UTC1h 35m

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 N338DN page for operator, model, and routing details .

Mode-S A3B3DF frequently asked

What is Mode-S code A3B3DF?
A3B3DF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N338DN.
Where is Mode-S A3B3DF registered?
Mode-S code A3B3DF 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 A3B3DF broadcasting right now?
Yes. Mode-S A3B3DF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3B3DF, octal 50731737, decimal 10,728,415.
What flights does A3B3DF operate?
Mode-S A3B3DF has broadcast 20 distinct callsigns, including DAL1579, DAL1946, DAL1527, DAL1150, DAL385.