Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A34E9D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N312DU · AIRBUS A220-300 · operated by DELTA AIR LINES INC

Hex
A34E9D
Octal
50647235
Decimal
10,702,493
Country
US
Tail
N312DU
Type
BCS3
Transponder active on ground
Flights observed
486
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:05 UTC

Last known position

Most recent position reported by Mode-S A34E9D.

Country allocation

The ICAO 24-bit address A34E9D 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
DAL1412 - 15 2026-07-10
DAL1390 Delta Air Lines 13 2026-06-12
DAL2910 Delta Air Lines 12 2026-05-02
DAL2140 Delta Air Lines 12 2026-07-21
DAL2864 Delta Air Lines 11 2026-05-01
DAL2673 - 10 2026-06-25
DAL2617 Delta Air Lines 10 2026-07-24
DAL2310 Delta Air Lines 9 2026-07-20
DAL2972 Delta Air Lines 8 2026-05-02
DAL1404 Delta Air Lines 8 2026-06-11
DAL2870 - 7 2026-07-15
DAL2675 Delta Air Lines 7 2026-05-01
DAL2109 Delta Air Lines 7 2026-06-10
DAL1554 - 7 2026-07-18
DAL952 - 6 2026-07-09
DAL379 Delta Air Lines 6 2026-06-05
DAL2962 Delta Air Lines 6 2026-05-29
DAL2917 - 6 2026-07-19
DAL2773 Delta Air Lines 6 2026-05-05
DAL2580 Delta Air Lines 6 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2185 ATL → GSO Jul 26, 16:20 UTCJul 26, 19:20 UTC3h 0m
2026-07-25 DAL2107 SLC → AUS Jul 25, 23:37 UTCJul 26, 03:01 UTC3h 24m
2026-07-25 DAL2107 SLC → AUS Jul 25, 23:40 UTCJul 26, 03:00 UTC3h 20m
2026-07-25 DAL2332 ATL → MCI Jul 25, 18:30 UTCJul 25, 20:25 UTC1h 55m
2026-07-25 DAL2332 ATL → MCI Jul 25, 18:20 UTCJul 25, 20:24 UTC2h 4m
2026-07-25 DAL2332 ATL → MCI Jul 25, 14:25 UTCJul 25, 16:35 UTC2h 10m
2026-07-25 DAL2913 GRR → MSP Jul 25, 11:15 UTCJul 25, 12:25 UTC1h 10m
2026-07-25 DAL1711 SAV → MSP Jul 25, 02:55 UTCJul 25, 03:45 UTC50m
2026-07-24 DAL2617 BOS → JFK Jul 24, 23:15 UTCJul 25, 01:15 UTC2h 0m
2026-07-24 DAL2617 BOS → JFK Jul 24, 23:11 UTCJul 25, 01:32 UTC2h 21m
2026-07-24 DAL2930 MSP → LGA Jul 24, 18:20 UTCJul 24, 21:30 UTC3h 10m
2026-07-24 DAL2252 DTW → MEM Jul 24, 14:40 UTCJul 24, 16:20 UTC1h 40m
2026-07-24 DAL1544 ATL → PBI Jul 24, 12:24 UTCJul 24, 13:22 UTC58m
2026-07-24 DAL2617 BOS → JFK Jul 24, 12:25 UTCJul 24, 13:20 UTC55m
2026-07-23 DAL2617 BOS → JFK Jul 23, 23:55 UTCJul 24, 02:10 UTC2h 15m
2026-07-23 DAL2617 BOS → JFK Jul 23, 23:51 UTCJul 24, 02:07 UTC2h 16m
2026-07-23 DAL2930 MSP → LGA Jul 23, 18:30 UTCJul 23, 21:55 UTC3h 25m
2026-07-23 DAL2252 DTW → MEM Jul 23, 15:15 UTCJul 23, 16:50 UTC1h 35m
2026-07-23 DAL2617 BOS → JFK Jul 23, 12:25 UTCJul 23, 13:20 UTC55m
2026-07-22 DAL2617 BOS → JFK Jul 22, 22:55 UTCJul 23, 01:15 UTC2h 20m
2026-07-22 DAL2617 BOS → JFK Jul 22, 22:51 UTCJul 23, 01:11 UTC2h 20m
2026-07-22 DAL2930 MSP → LGA Jul 22, 18:05 UTCJul 22, 21:10 UTC3h 5m
2026-07-22 DAL2930 MSP → LGA Jul 22, 18:04 UTCJul 22, 21:10 UTC3h 6m
2026-07-22 DAL2252 DTW → MEM Jul 22, 14:55 UTCJul 22, 16:20 UTC1h 25m
2026-07-22 DAL1544 MSP → ORD Jul 22, 12:03 UTCJul 22, 12:54 UTC51m
2026-07-22 DAL1544 MSP → ORD Jul 22, 12:05 UTCJul 22, 12:55 UTC50m
2026-07-21 DAL2617 BOS → JFK Jul 21, 22:45 UTCJul 22, 01:05 UTC2h 20m
2026-07-21 DAL2617 BOS → JFK Jul 21, 22:43 UTCJul 22, 01:00 UTC2h 17m
2026-07-21 DAL2140 SYR → ATL Jul 21, 11:50 UTCJul 21, 14:50 UTC3h 0m
2026-07-21 DAL2445 MSY → LGA Jul 21, 00:15 UTCJul 21, 03:15 UTC3h 0m
2026-07-20 DAL1387 BOS → RDU Jul 20, 19:50 UTCJul 20, 22:25 UTC2h 35m
2026-07-20 DAL1387 BOS → RDU Jul 20, 19:50 UTCJul 20, 22:26 UTC2h 36m
2026-07-20 DAL1322 DTW → BOS Jul 20, 15:45 UTCJul 20, 18:20 UTC2h 35m
2026-07-20 DAL2411 ATL → LGA Jul 20, 11:45 UTCJul 20, 14:20 UTC2h 35m
2026-07-20 DAL2310 SFO → SEA Jul 20, 01:05 UTCJul 20, 03:35 UTC2h 30m
2026-07-19 DAL2310 SFO → SEA Jul 19, 21:00 UTCJul 19, 23:50 UTC2h 50m
2026-07-19 DAL2917 ORD → LGA Jul 19, 17:10 UTCJul 19, 18:55 UTC1h 45m
2026-07-19 DAL2917 ORD → LGA Jul 19, 17:06 UTCJul 19, 18:49 UTC1h 43m
2026-07-19 DAL1544 MSP → ORD Jul 19, 12:05 UTCJul 19, 13:10 UTC1h 5m
2026-07-18 DAL2062 AUS → MSP Jul 18, 21:00 UTCJul 18, 23:25 UTC2h 25m
2026-07-18 DAL2062 MSP → AUS Jul 18, 17:00 UTCJul 18, 19:10 UTC2h 10m
2026-07-18 DAL1554 - Jul 18, 13:50 UTCJul 18, 14:45 UTC55m
2026-07-18 DAL2804 BOS → ORD Jul 18, 01:18 UTCJul 18, 03:38 UTC2h 20m
2026-07-18 DAL2804 BOS → ORD Jul 18, 01:20 UTCJul 18, 03:35 UTC2h 16m
2026-07-17 DAL1156 AUS → BOS Jul 17, 19:45 UTCJul 17, 23:35 UTC3h 50m
2026-07-17 DAL739 SEA → AUS Jul 17, 14:24 UTCJul 17, 18:15 UTC3h 50m
2026-07-17 DAL925 - Jul 17, 09:40 UTCJul 17, 12:50 UTC3h 10m
2026-07-17 DAL925 ANC → SEA Jul 17, 09:37 UTCJul 17, 12:45 UTC3h 8m
2026-07-17 DAL936 JFK → DEN Jul 17, 04:59 UTCJul 17, 08:04 UTC3h 5m
2026-07-17 DAL2449 PHX → SEA Jul 17, 01:09 UTCJul 17, 03:39 UTC2h 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 N312DU page for operator, model, and routing details .

Mode-S A34E9D frequently asked

What is Mode-S code A34E9D?
A34E9D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N312DU.
Where is Mode-S A34E9D registered?
Mode-S code A34E9D 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 A34E9D broadcasting right now?
Mode-S A34E9D is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A34E9D, octal 50647235, decimal 10,702,493.
What flights does A34E9D operate?
Mode-S A34E9D has broadcast 20 distinct callsigns, including DAL1412, DAL1390, DAL2910, DAL2140, DAL2864.