Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3D4C6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N346NB · AIRBUS A-319 · operated by DELTA AIR LINES INC

Hex
A3D4C6
Octal
50752306
Decimal
10,736,838
Country
US
Tail
N346NB
Type
A319
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
494
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A3D4C6.

Country allocation

The ICAO 24-bit address A3D4C6 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
DAL2320 Delta Air Lines 13 2026-05-30
DAL2443 Delta Air Lines 10 2026-05-30
DAL611 - 8 2026-06-24
DAL2314 - 8 2026-07-14
DAL1638 Delta Air Lines 8 2026-05-30
DAL1316 Delta Air Lines 8 2026-05-28
DAL1023 - 8 2026-07-18
DAL1224 - 7 2026-06-30
DAL1003 Delta Air Lines 7 2026-07-24
DAL617 Delta Air Lines 6 2026-05-28
DAL584 Delta Air Lines 6 2026-06-06
DAL2064 - 6 2026-07-18
DAL2007 Delta Air Lines 6 2026-06-02
DAL1929 - 6 2026-07-10
DAL1193 Delta Air Lines 6 2026-07-23
DAL950 - 5 2026-07-08
DAL946 Delta Air Lines 5 2026-06-17
DAL583 Delta Air Lines 5 2026-06-06
DAL330 - 5 2026-07-02
DAL3047 - 5 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1075 SFO → ATL Jul 26, 20:20 UTCJul 26, 21:30 UTC1h 10m
2026-07-26 DAL2283 ALB → ATL Jul 26, 17:10 UTCJul 26, 18:40 UTC1h 30m
2026-07-26 DAL2351 DCA → MCO Jul 26, 12:25 UTCJul 26, 15:45 UTC3h 20m
2026-07-26 DAL1207 DTW → DFW Jul 26, 00:30 UTCJul 26, 02:35 UTC2h 5m
2026-07-26 DAL1207 DTW → DFW Jul 26, 00:28 UTCJul 26, 02:28 UTC2h 0m
2026-07-25 DAL2598 ATL → PIT Jul 25, 20:15 UTCJul 25, 22:55 UTC2h 40m
2026-07-25 DAL2458 PDX → SLC Jul 25, 16:15 UTCJul 25, 18:55 UTC2h 40m
2026-07-25 DAL2458 PDX → SLC Jul 25, 16:13 UTCJul 25, 18:51 UTC2h 38m
2026-07-25 DAL1040 AUS → DTW Jul 25, 10:35 UTCJul 25, 13:05 UTC2h 30m
2026-07-24 DAL2524 RDU → BOS Jul 24, 22:10 UTCJul 25, 00:20 UTC2h 10m
2026-07-24 DAL2524 RDU → BOS Jul 24, 22:07 UTCJul 25, 00:18 UTC2h 11m
2026-07-24 DAL1007 BOS → RDU Jul 24, 17:55 UTCJul 24, 19:35 UTC1h 40m
2026-07-24 DAL1003 DTW → BOS Jul 24, 14:50 UTCJul 24, 16:40 UTC1h 50m
2026-07-24 DAL1003 DTW → BOS Jul 24, 11:25 UTCJul 24, 13:15 UTC1h 50m
2026-07-24 DAL2961 ATL → LEX Jul 24, 01:45 UTCJul 24, 03:35 UTC1h 50m
2026-07-24 DAL2961 ATL → LEX Jul 24, 01:45 UTCJul 24, 03:31 UTC1h 46m
2026-07-23 DAL2521 SJC → MSP Jul 23, 19:30 UTCJul 23, 21:55 UTC2h 25m
2026-07-23 DAL2521 SJC → MSP Jul 23, 16:25 UTCJul 23, 18:20 UTC1h 55m
2026-07-23 DAL1193 SLC → SJC Jul 23, 12:45 UTCJul 23, 15:05 UTC2h 20m
2026-07-23 DAL1193 SLC → SJC Jul 23, 12:41 UTCJul 23, 15:05 UTC2h 24m
2026-07-23 DAL2729 BOS → JAX Jul 23, 01:20 UTCJul 23, 03:50 UTC2h 30m
2026-07-22 DAL2529 ATL → CLE Jul 22, 21:55 UTCJul 23, 00:10 UTC2h 15m
2026-07-22 DAL381 SLC → JFK Jul 22, 16:55 UTCJul 22, 20:15 UTC3h 20m
2026-07-22 DAL381 SLC → JFK Jul 22, 12:25 UTCJul 22, 15:35 UTC3h 10m
2026-07-22 DAL2578 DTW → AUS Jul 22, 04:25 UTCJul 22, 05:25 UTC1h 0m
2026-07-21 DAL1040 AUS → DTW Jul 21, 14:10 UTCJul 21, 16:40 UTC2h 30m
2026-07-21 DAL1040 AUS → DTW Jul 21, 14:08 UTCJul 21, 16:41 UTC2h 33m
2026-07-21 DAL1077 FAY → ATL Jul 21, 06:50 UTCJul 21, 10:10 UTC3h 20m
2026-07-21 DAL1077 FAY → ATL Jul 21, 02:25 UTCJul 21, 05:35 UTC3h 10m
2026-07-20 DAL2524 RDU → BOS Jul 20, 22:35 UTCJul 21, 00:55 UTC2h 19m
2026-07-20 DAL1007 - Jul 20, 18:10 UTCJul 20, 20:00 UTC1h 50m
2026-07-20 DAL1003 DTW → BOS Jul 20, 14:25 UTCJul 20, 16:25 UTC2h 0m
2026-07-20 DAL1003 DTW → BOS Jul 20, 14:21 UTCJul 20, 16:20 UTC1h 59m
2026-07-20 DAL1003 DTW → BOS Jul 20, 11:30 UTCJul 20, 13:20 UTC1h 50m
2026-07-20 DAL2729 BOS → JAX Jul 20, 01:15 UTCJul 20, 03:05 UTC1h 50m
2026-07-19 DAL2529 AUS → MCO Jul 19, 21:35 UTCJul 19, 23:55 UTC2h 20m
2026-07-18 DAL2524 MCO → AUS Jul 18, 22:00 UTCJul 19, 00:10 UTC2h 10m
2026-07-18 DAL1007 DCA → MCO Jul 18, 18:15 UTCJul 18, 20:00 UTC1h 45m
2026-07-18 DAL737 ATL → DCA Jul 18, 15:10 UTCJul 18, 16:35 UTC1h 25m
2026-07-18 DAL1023 - Jul 18, 10:05 UTCJul 18, 12:10 UTC2h 5m
2026-07-18 DAL2064 ATL → PVD Jul 18, 02:45 UTCJul 18, 04:45 UTC2h 1m
2026-07-17 DAL2135 IAD → ATL Jul 17, 23:10 UTCJul 18, 00:35 UTC1h 25m
2026-07-17 DAL2135 ATL → IAD Jul 17, 16:24 UTCJul 17, 17:44 UTC1h 20m
2026-07-17 DAL2840 - Jul 17, 12:40 UTCJul 17, 14:39 UTC2h 0m
2026-07-16 DAL2659 ATL → PVD Jul 16, 22:32 UTCJul 17, 00:35 UTC2h 3m
2026-07-16 DAL2659 ATL → PVD Jul 16, 22:35 UTCJul 17, 00:45 UTC2h 10m
2026-07-16 DAL2135 IAD → ATL Jul 16, 19:14 UTCJul 16, 20:35 UTC1h 20m
2026-07-16 DAL2135 IAD → ATL Jul 16, 19:11 UTCJul 16, 20:21 UTC1h 10m
2026-07-16 DAL2135 ATL → IAD Jul 16, 16:30 UTCJul 16, 17:49 UTC1h 20m
2026-07-16 DAL2840 - Jul 16, 12:49 UTCJul 16, 13:30 UTC40m

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 N346NB page for operator, model, and routing details .

Mode-S A3D4C6 frequently asked

What is Mode-S code A3D4C6?
A3D4C6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N346NB.
Where is Mode-S A3D4C6 registered?
Mode-S code A3D4C6 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 A3D4C6 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 A3D4C6, octal 50752306, decimal 10,736,838.
What flights does A3D4C6 operate?
Mode-S A3D4C6 has broadcast 20 distinct callsigns, including DAL2320, DAL2443, DAL611, DAL2314, DAL1638.