Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3411F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N309DU · AIRBUS A220-300 · operated by DELTA AIR LINES INC

Hex
A3411F
Octal
50640437
Decimal
10,699,039
Country
US
Tail
N309DU
Type
BCS3
No current signal · last broadcast 4h ago
Flights observed
415
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A3411F.

Country allocation

The ICAO 24-bit address A3411F 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
DAL750 Delta Air Lines 14 2026-05-04
DAL2442 Delta Air Lines 12 2026-05-05
DAL2068 - 11 2026-06-29
DAL2985 - 10 2026-07-02
DAL2930 - 10 2026-07-11
DAL2528 Delta Air Lines 10 2026-05-10
DAL572 - 9 2026-06-29
DAL873 - 8 2026-07-04
DAL2508 Delta Air Lines 8 2026-05-05
DAL1412 Delta Air Lines 8 2026-05-24
DAL2644 Delta Air Lines 7 2026-06-15
DAL2617 - 7 2026-07-12
DAL2194 Delta Air Lines 7 2026-07-03
DAL2186 Delta Air Lines 7 2026-05-05
DAL2140 Delta Air Lines 7 2026-05-15
DAL922 Delta Air Lines 6 2026-05-25
DAL2445 Delta Air Lines 6 2026-07-06
DAL2412 Delta Air Lines 6 2026-05-28
DAL1390 - 6 2026-07-02
DAL1387 - 6 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL1825 LGA → DCA Jul 14, 01:50 UTCJul 14, 02:35 UTC45m
2026-07-14 DAL1825 LGA → DCA Jul 14, 01:49 UTCJul 14, 02:30 UTC41m
2026-07-13 DAL822 BNA → LGA Jul 13, 22:30 UTCJul 14, 00:35 UTC2h 5m
2026-07-13 DAL1710 - Jul 13, 16:45 UTCJul 13, 20:45 UTC4h 0m
2026-07-13 DAL2105 - Jul 13, 12:05 UTCJul 13, 15:20 UTC3h 15m
2026-07-13 DAL2105 MCI → SEA Jul 13, 12:02 UTCJul 13, 15:14 UTC3h 12m
2026-07-13 DAL563 - Jul 13, 00:20 UTCJul 13, 02:45 UTC2h 25m
2026-07-12 DAL2088 - Jul 12, 19:35 UTCJul 12, 22:50 UTC3h 15m
2026-07-12 DAL2088 IAH → LGA Jul 12, 19:33 UTCJul 12, 22:42 UTC3h 9m
2026-07-12 DAL2617 - Jul 12, 15:45 UTCJul 12, 18:15 UTC2h 30m
2026-07-11 DAL2617 - Jul 11, 23:25 UTCJul 12, 01:40 UTC2h 15m
2026-07-11 DAL2930 - Jul 11, 18:55 UTCJul 11, 22:10 UTC3h 15m
2026-07-11 DAL2930 LGA → IAH Jul 11, 18:51 UTCJul 11, 22:07 UTC3h 16m
2026-07-11 DAL2252 - Jul 11, 14:50 UTCJul 11, 16:30 UTC1h 40m
2026-07-11 DAL1544 MSP → ORD Jul 11, 12:00 UTCJul 11, 12:55 UTC55m
2026-07-11 DAL2565 - Jul 11, 01:10 UTCJul 11, 02:15 UTC1h 5m
2026-07-11 DAL2565 - Jul 11, 00:00 UTCJul 11, 01:05 UTC1h 5m
2026-07-10 DAL2565 MSP → BWI Jul 10, 20:40 UTCJul 10, 22:50 UTC2h 10m
2026-07-10 DAL2185 - Jul 10, 15:30 UTCJul 10, 18:35 UTC3h 5m
2026-07-09 DAL2107 MSP → SNA Jul 9, 23:30 UTCJul 10, 03:05 UTC3h 35m
2026-07-09 DAL2521 - Jul 9, 19:05 UTCJul 9, 21:25 UTC2h 20m
2026-07-09 DAL2521 MSP → RDU Jul 9, 15:40 UTCJul 9, 17:40 UTC2h 0m
2026-07-09 DAL2617 - Jul 9, 01:25 UTCJul 9, 04:00 UTC2h 35m
2026-07-08 DAL2930 - Jul 8, 18:10 UTCJul 8, 21:25 UTC3h 15m
2026-07-08 DAL2930 LGA → IAH Jul 8, 18:06 UTCJul 8, 21:20 UTC3h 14m
2026-07-08 DAL2252 - Jul 8, 14:40 UTCJul 8, 16:15 UTC1h 35m
2026-07-08 DAL2617 - Jul 8, 12:25 UTCJul 8, 13:25 UTC1h 0m
2026-07-07 DAL2617 IAH → MSP Jul 7, 23:20 UTCJul 8, 01:40 UTC2h 20m
2026-07-07 DAL2930 - Jul 7, 18:15 UTCJul 7, 21:45 UTC3h 30m
2026-07-07 DAL2930 LGA → IAH Jul 7, 18:11 UTCJul 7, 21:48 UTC3h 37m
2026-07-07 DAL2252 - Jul 7, 14:45 UTCJul 7, 16:20 UTC1h 35m
2026-07-07 DAL1544 ATL → PBI Jul 7, 12:10 UTCJul 7, 13:15 UTC1h 5m
2026-07-07 DAL2617 - Jul 7, 02:40 UTCJul 7, 05:05 UTC2h 25m
2026-07-06 DAL2930 LGA → IAH Jul 6, 22:07 UTCJul 7, 01:33 UTC3h 26m
2026-07-06 DAL2930 - Jul 6, 22:10 UTCJul 7, 01:40 UTC3h 30m
2026-07-06 DAL2445 DTW → CMH Jul 6, 19:05 UTCJul 6, 20:05 UTC1h 0m
2026-07-06 DAL2445 DTW → CMH Jul 6, 00:20 UTCJul 6, 03:05 UTC2h 45m
2026-07-05 DAL1387 JFK → MSY Jul 5, 20:05 UTCJul 5, 22:45 UTC2h 40m
2026-07-05 DAL1387 JFK → MSY Jul 5, 20:03 UTCJul 5, 22:44 UTC2h 41m
2026-07-05 DAL1322 - Jul 5, 15:25 UTCJul 5, 18:10 UTC2h 45m
2026-07-05 DAL2411 ATL → LGA Jul 5, 11:25 UTCJul 5, 14:00 UTC2h 35m
2026-07-04 DAL873 DFW → LGA Jul 4, 20:40 UTCJul 4, 23:45 UTC3h 5m
2026-07-04 DAL873 LGA → DFW Jul 4, 16:15 UTCJul 4, 19:30 UTC3h 15m
2026-07-04 DAL1172 DCA → LGA Jul 4, 11:05 UTCJul 4, 11:50 UTC45m
2026-07-04 DAL1825 LGA → DCA Jul 4, 02:23 UTCJul 4, 03:03 UTC40m
2026-07-04 DAL1825 LGA → DCA Jul 4, 02:25 UTCJul 4, 03:05 UTC40m
2026-07-03 DAL2748 - Jul 3, 21:35 UTCJul 3, 23:25 UTC1h 50m
2026-07-03 DAL2748 BNA → LGA Jul 3, 21:32 UTCJul 3, 23:22 UTC1h 50m
2026-07-03 DAL2748 - Jul 3, 18:05 UTCJul 3, 19:50 UTC1h 45m
2026-07-03 DAL2194 BDL → ATL Jul 3, 15:20 UTCJul 3, 16:35 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 N309DU page for operator, model, and routing details .

Mode-S A3411F frequently asked

What is Mode-S code A3411F?
A3411F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N309DU.
Where is Mode-S A3411F registered?
Mode-S code A3411F 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 A3411F broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3411F, octal 50640437, decimal 10,699,039.
What flights does A3411F operate?
Mode-S A3411F has broadcast 20 distinct callsigns, including DAL750, DAL2442, DAL2068, DAL2985, DAL2930.