Apparatus

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sensors Mode-S transponder

A34AE6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N311DU · AIRBUS A220-300 · operated by DELTA AIR LINES INC

Hex
A34AE6
Octal
50645346
Decimal
10,701,542
Country
US
Tail
N311DU
Type
BCS3
No current signal · last broadcast 1h ago
Flights observed
405
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A34AE6.

Country allocation

The ICAO 24-bit address A34AE6 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
DAL2972 Delta Air Lines 10 2026-05-11
DAL2412 - 9 2026-07-03
DAL2910 Delta Air Lines 8 2026-04-25
DAL2675 Delta Air Lines 8 2026-05-07
DAL2456 Delta Air Lines 8 2026-04-24
DAL2958 Delta Air Lines 7 2026-06-11
DAL1358 - 7 2026-07-10
DAL846 Delta Air Lines 6 2026-04-30
DAL816 - 6 2026-06-21
DAL483 - 6 2026-06-27
DAL2748 - 6 2026-07-07
DAL2671 Delta Air Lines 6 2026-05-11
DAL2318 - 6 2026-06-25
DAL2140 - 6 2026-06-13
DAL1554 Delta Air Lines 6 2026-06-07
DAL925 - 5 2026-07-10
DAL2819 Delta Air Lines 5 2026-06-05
DAL2580 Delta Air Lines 5 2026-04-24
DAL2503 Delta Air Lines 5 2026-05-23
DAL2449 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL2256 - Jul 14, 00:50 UTCJul 14, 03:30 UTC2h 40m
2026-07-13 DAL1412 SFO → SEA Jul 13, 21:11 UTCJul 13, 22:40 UTC1h 29m
2026-07-13 DAL1412 SFO → SEA Jul 13, 21:15 UTCJul 13, 22:40 UTC1h 25m
2026-07-13 DAL2635 BFI → SFO Jul 13, 05:45 UTCJul 13, 07:40 UTC1h 55m
2026-07-12 DAL831 AUS → SEA Jul 12, 23:55 UTCJul 13, 03:45 UTC3h 50m
2026-07-12 DAL831 SEA → AUS Jul 12, 18:30 UTCJul 12, 22:20 UTC3h 50m
2026-07-12 DAL9963 YVR → SEA Jul 12, 14:53 UTCJul 12, 15:23 UTC30m
2026-07-12 DAL9963 - Jul 12, 14:55 UTCJul 12, 15:25 UTC30m
2026-07-12 DAL928 YVR → ANC Jul 12, 07:29 UTCJul 12, 10:27 UTC2h 58m
2026-07-11 DAL928 SEA → YVR Jul 11, 21:30 UTCJul 11, 22:40 UTC1h 10m
2026-07-11 DAL2374 PHX → SEA Jul 11, 16:30 UTCJul 11, 19:00 UTC2h 30m
2026-07-11 DAL2374 PHX → SEA Jul 11, 16:28 UTCJul 11, 18:56 UTC2h 28m
2026-07-11 DAL2447 SEA → PHX Jul 11, 06:30 UTCJul 11, 09:00 UTC2h 30m
2026-07-11 DAL2449 PHX → SEA Jul 11, 02:40 UTCJul 11, 05:05 UTC2h 25m
2026-07-10 DAL2449 SEA → PHX Jul 10, 23:05 UTCJul 11, 01:30 UTC2h 25m
2026-07-10 DAL2449 SEA → PHX Jul 10, 23:06 UTCJul 11, 01:25 UTC2h 19m
2026-07-10 DAL1358 DEN → SEA Jul 10, 19:10 UTCJul 10, 21:35 UTC2h 25m
2026-07-10 DAL1358 SEA → DEN Jul 10, 15:40 UTCJul 10, 17:50 UTC2h 10m
2026-07-10 DAL925 ANC → SEA Jul 10, 02:48 UTCJul 10, 05:53 UTC3h 5m
2026-07-10 DAL925 ANC → SEA Jul 10, 02:50 UTCJul 10, 05:55 UTC3h 5m
2026-07-08 DAL928 SEA → ANC Jul 8, 21:10 UTCJul 9, 00:30 UTC3h 20m
2026-07-08 DAL928 SEA → ANC Jul 8, 21:08 UTCJul 9, 00:33 UTC3h 25m
2026-07-08 DAL2870 SFO → SEA Jul 8, 17:55 UTCJul 8, 19:35 UTC1h 40m
2026-07-08 DAL2870 SEA → SFO Jul 8, 14:50 UTCJul 8, 16:40 UTC1h 50m
2026-07-08 DAL925 ANC → SEA Jul 8, 09:50 UTCJul 8, 12:50 UTC3h 0m
2026-07-08 DAL925 ANC → SEA Jul 8, 09:50 UTCJul 8, 12:47 UTC2h 57m
2026-07-08 DAL936 SEA → ANC Jul 8, 04:30 UTCJul 8, 07:45 UTC3h 15m
2026-07-07 DAL373 - Jul 7, 22:20 UTCJul 8, 03:05 UTC4h 45m
2026-07-07 DAL2748 LGA → BNA Jul 7, 18:05 UTCJul 7, 20:15 UTC2h 10m
2026-07-07 DAL2194 BDL → ATL Jul 7, 15:20 UTCJul 7, 16:30 UTC1h 10m
2026-07-07 DAL2194 BDL → ATL Jul 7, 15:10 UTCJul 7, 16:27 UTC1h 17m
2026-07-07 DAL2194 BDL → ATL Jul 7, 12:20 UTCJul 7, 13:35 UTC1h 15m
2026-07-07 DAL1404 - Jul 7, 02:50 UTCJul 7, 04:20 UTC1h 30m
2026-07-06 DAL1404 - Jul 6, 22:55 UTCJul 7, 00:40 UTC1h 45m
2026-07-06 DAL1404 - Jul 6, 19:50 UTCJul 6, 20:25 UTC35m
2026-07-06 DAL1417 - Jul 6, 12:15 UTCJul 6, 15:50 UTC3h 35m
2026-07-03 DAL2109 - Jul 3, 22:40 UTCJul 4, 01:50 UTC3h 10m
2026-07-03 DAL2412 - Jul 3, 18:40 UTCJul 3, 21:00 UTC2h 20m
2026-07-03 DAL2412 - Jul 3, 13:55 UTCJul 3, 16:30 UTC2h 35m
2026-07-03 DAL2943 SEA → SFO Jul 3, 00:10 UTCJul 3, 03:15 UTC3h 5m
2026-07-02 DAL1299 - Jul 2, 19:55 UTCJul 2, 22:30 UTC2h 35m
2026-07-01 DAL2544 DEN → SLC Jul 1, 11:50 UTCJul 1, 13:00 UTC1h 10m
2026-07-01 DAL2851 SEA → DEN Jul 1, 03:10 UTCJul 1, 05:25 UTC2h 15m
2026-06-30 DAL2449 BOS → JFK Jun 30, 23:05 UTCJul 1, 01:45 UTC2h 40m
2026-06-30 DAL2449 BOS → JFK Jun 30, 19:20 UTCJun 30, 21:55 UTC2h 35m
2026-06-30 DAL853 ANC → SEA Jun 30, 14:05 UTCJun 30, 17:10 UTC3h 5m
2026-06-30 DAL936 SEA → ANC Jun 30, 04:45 UTCJun 30, 08:00 UTC3h 15m
2026-06-30 DAL936 - Jun 30, 04:40 UTCJun 30, 08:04 UTC3h 24m
2026-06-29 DAL1710 JFK → SAT Jun 29, 22:35 UTCJun 30, 03:05 UTC4h 30m
2026-06-29 DAL1710 JFK → SAT Jun 29, 22:33 UTCJun 30, 02:49 UTC4h 16m

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 N311DU page for operator, model, and routing details .

Mode-S A34AE6 frequently asked

What is Mode-S code A34AE6?
A34AE6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N311DU.
Where is Mode-S A34AE6 registered?
Mode-S code A34AE6 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 A34AE6 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A34AE6, octal 50645346, decimal 10,701,542.
What flights does A34AE6 operate?
Mode-S A34AE6 has broadcast 20 distinct callsigns, including DAL2972, DAL2412, DAL2910, DAL2675, DAL2456.