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
422
Distinct callsigns
20
Country
US
Last broadcast
1h ago

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
DAL2864 Delta Air Lines 11 2026-05-01
DAL2140 Delta Air Lines 11 2026-06-04
DAL2673 - 10 2026-06-25
DAL2972 Delta Air Lines 8 2026-05-02
DAL1404 Delta Air Lines 8 2026-06-11
DAL2675 Delta Air Lines 7 2026-05-01
DAL2310 - 7 2026-06-19
DAL2109 Delta Air Lines 7 2026-06-10
DAL952 - 6 2026-07-09
DAL379 Delta Air Lines 6 2026-06-05
DAL2962 Delta Air Lines 6 2026-05-29
DAL2773 Delta Air Lines 6 2026-05-05
DAL2580 Delta Air Lines 6 2026-05-01
DAL2141 Delta Air Lines 6 2026-06-10
DAL2105 - 6 2026-07-02
DAL2088 - 6 2026-06-25
DAL1877 Delta Air Lines 6 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL2318 - Jul 14, 02:35 UTCJul 14, 03:15 UTC40m
2026-07-13 DAL2318 - Jul 13, 22:25 UTCJul 14, 01:05 UTC2h 40m
2026-07-13 DAL2374 - Jul 13, 16:40 UTCJul 13, 19:10 UTC2h 30m
2026-07-13 DAL2447 SEA → PHX Jul 13, 05:32 UTCJul 13, 08:04 UTC2h 32m
2026-07-13 DAL2447 SEA → PHX Jul 13, 05:35 UTCJul 13, 08:10 UTC2h 35m
2026-07-12 DAL1061 - Jul 12, 23:20 UTCJul 13, 02:45 UTC3h 25m
2026-07-12 DAL1061 FAI → SEA Jul 12, 23:16 UTCJul 13, 02:42 UTC3h 26m
2026-07-12 DAL1061 SEA → FAI Jul 12, 18:01 UTCJul 12, 21:15 UTC3h 15m
2026-07-12 DAL1015 IAD → SEA Jul 12, 11:15 UTCJul 12, 16:25 UTC5h 10m
2026-07-12 DAL2549 ATL → IAD Jul 12, 05:15 UTCJul 12, 06:30 UTC1h 15m
2026-07-11 DAL483 BUR → ATL Jul 11, 21:05 UTCJul 12, 01:10 UTC4h 5m
2026-07-11 DAL483 ATL → BUR Jul 11, 15:30 UTCJul 11, 19:35 UTC4h 5m
2026-07-11 DAL2127 IAD → ATL Jul 11, 12:54 UTCJul 11, 14:08 UTC1h 14m
2026-07-11 DAL2127 IAD → ATL Jul 11, 12:55 UTCJul 11, 14:10 UTC1h 15m
2026-07-11 DAL541 SEA → IAD Jul 11, 00:10 UTCJul 11, 04:40 UTC4h 30m
2026-07-10 DAL1412 - Jul 10, 21:05 UTCJul 10, 22:35 UTC1h 30m
2026-07-10 DAL1412 - Jul 10, 18:00 UTCJul 10, 19:50 UTC1h 50m
2026-07-10 DAL804 - Jul 10, 12:05 UTCJul 10, 15:50 UTC3h 45m
2026-07-10 DAL870 - Jul 10, 01:25 UTCJul 10, 04:45 UTC3h 20m
2026-07-09 DAL952 - Jul 9, 21:40 UTCJul 10, 00:00 UTC2h 20m
2026-07-09 DAL952 - Jul 9, 17:50 UTCJul 9, 20:00 UTC2h 10m
2026-07-09 DAL1015 IAD → SEA Jul 9, 11:15 UTCJul 9, 16:20 UTC5h 5m
2026-07-08 DAL541 SEA → IAD Jul 8, 23:25 UTCJul 9, 04:05 UTC4h 40m
2026-07-08 DAL1358 DEN → SEA Jul 8, 19:15 UTCJul 8, 21:40 UTC2h 25m
2026-07-08 DAL1358 DEN → SEA Jul 8, 19:13 UTCJul 8, 21:40 UTC2h 27m
2026-07-08 DAL1358 SEA → DEN Jul 8, 15:25 UTCJul 8, 17:35 UTC2h 10m
2026-07-07 DAL2449 BOS → JFK Jul 7, 22:55 UTCJul 8, 01:25 UTC2h 30m
2026-07-07 DAL2449 BOS → JFK Jul 7, 18:55 UTCJul 7, 21:20 UTC2h 25m
2026-07-07 DAL853 ANC → SEA Jul 7, 14:05 UTCJul 7, 17:20 UTC3h 15m
2026-07-06 DAL928 SEA → ANC Jul 6, 22:35 UTCJul 7, 01:30 UTC2h 55m
2026-07-06 DAL2870 FLL → LGA Jul 6, 18:50 UTCJul 6, 20:20 UTC1h 30m
2026-07-06 DAL2870 FLL → LGA Jul 6, 15:50 UTCJul 6, 17:35 UTC1h 45m
2026-07-06 DAL2408 - Jul 6, 09:35 UTCJul 6, 11:15 UTC1h 40m
2026-07-06 DAL2408 FAI → SEA Jul 6, 09:31 UTCJul 6, 12:47 UTC3h 16m
2026-07-06 DAL2186 SEA → FAI Jul 6, 04:50 UTCJul 6, 08:05 UTC3h 15m
2026-07-05 DAL1061 - Jul 5, 23:15 UTCJul 6, 02:30 UTC3h 15m
2026-07-05 DAL1061 FAI → SEA Jul 5, 23:11 UTCJul 6, 02:24 UTC3h 13m
2026-07-05 DAL1061 SEA → FAI Jul 5, 18:40 UTCJul 5, 22:00 UTC3h 20m
2026-07-05 DAL1015 JFK → MCO Jul 5, 11:15 UTCJul 5, 16:30 UTC5h 15m
2026-07-05 DAL2549 ATL → IAD Jul 5, 03:15 UTCJul 5, 04:35 UTC1h 20m
2026-07-04 DAL483 BUR → ATL Jul 4, 21:25 UTCJul 5, 01:30 UTC4h 5m
2026-07-04 DAL483 ATL → BUR Jul 4, 16:00 UTCJul 4, 20:20 UTC4h 20m
2026-07-04 DAL2127 IAD → ATL Jul 4, 13:22 UTCJul 4, 14:32 UTC1h 10m
2026-07-04 DAL2127 IAD → ATL Jul 4, 13:25 UTCJul 4, 14:35 UTC1h 10m
2026-07-04 DAL541 SEA → IAD Jul 4, 00:10 UTCJul 4, 04:55 UTC4h 45m
2026-07-04 DAL541 SEA → IAD Jul 4, 00:10 UTCJul 4, 04:46 UTC4h 36m
2026-07-03 DAL1412 SFO → SEA Jul 3, 21:10 UTCJul 3, 22:50 UTC1h 40m
2026-07-03 DAL1412 SEA → SFO Jul 3, 18:20 UTCJul 3, 19:55 UTC1h 35m
2026-07-03 DAL804 - Jul 3, 11:35 UTCJul 3, 15:20 UTC3h 45m
2026-07-03 DAL870 SEA → DFW Jul 3, 01:40 UTCJul 3, 05:10 UTC3h 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, DAL2864, DAL2140.