Apparatus

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sensors Mode-S transponder

A64924

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N504DN · AIRBUS A-350-900 · operated by DELTA AIR LINES INC, DEPT 595 AIRCRAFT REGISTRATIONS

Hex
A64924
Octal
51444444
Decimal
10,897,700
Country
US
Tail
N504DN
Type
A359
Broadcasting now · callsign DAL95 · 38,000 ft
Flights observed
229
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Current position

A64924 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A64924 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
DAL389 - 26 2026-07-12
DAL281 - 24 2026-07-03
DAL68 - 18 2026-07-01
DAL196 - 18 2026-07-02
DAL388 - 15 2026-07-13
DAL69 - 13 2026-06-30
DAL274 - 13 2026-07-10
DAL280 - 12 2026-06-26
DAL275 - 12 2026-07-09
DAL166 Delta Air Lines 12 2026-04-28
DAL197 Delta Air Lines 11 2026-07-01
DAL173 Delta Air Lines 11 2026-05-13
DAL167 Delta Air Lines 8 2026-04-27
DAL96 - 6 2026-07-13
DAL172 Delta Air Lines 6 2026-05-12
DAL95 - 4 2026-07-09
DAL82 - 3 2026-07-08
DAL137 Delta Air Lines 3 2026-05-20
DAL136 Delta Air Lines 3 2026-05-20
DAL83 - 2 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL96 - Jul 13, 21:25 UTCJul 14, 04:40 UTC7h 15m
2026-07-13 DAL388 PVG → DTW Jul 13, 02:12 UTCJul 13, 15:54 UTC13h 42m
2026-07-12 DAL389 - Jul 12, 05:05 UTCJul 13, 04:50 UTC23h 45m
2026-07-12 DAL389 - Jul 12, 04:15 UTCJul 13, 03:01 UTC22h 45m
2026-07-11 DAL389 - Jul 11, 23:20 UTCJul 12, 05:40 UTC6h 20m
2026-07-11 DAL389 DTW → PVG Jul 11, 23:18 UTCJul 12, 13:09 UTC13h 51m
2026-07-10 DAL274 HND → DTW Jul 10, 09:49 UTCJul 10, 22:09 UTC12h 20m
2026-07-10 DAL274 HND → DTW Jul 10, 09:50 UTCJul 10, 22:10 UTC12h 20m
2026-07-09 DAL275 - Jul 9, 18:20 UTCJul 10, 06:25 UTC12h 5m
2026-07-09 DAL95 - Jul 9, 07:30 UTCJul 9, 15:35 UTC8h 5m
2026-07-08 DAL82 - Jul 8, 20:20 UTCJul 8, 22:30 UTC2h 10m
2026-07-08 DAL82 ATL → CDG Jul 8, 20:19 UTCJul 9, 04:15 UTC7h 56m
2026-07-07 DAL104 - Jul 7, 02:10 UTCJul 7, 02:50 UTC40m
2026-07-07 DAL104 GRU → ATL Jul 7, 02:06 UTCJul 7, 11:02 UTC8h 56m
2026-07-06 DAL105 ATL → GRU Jul 6, 00:39 UTCJul 6, 09:30 UTC8h 51m
2026-07-06 DAL105 - Jul 6, 00:40 UTCJul 6, 02:00 UTC1h 20m
2026-07-05 DAL83 - Jul 5, 07:50 UTCJul 5, 16:35 UTC8h 45m
2026-07-04 DAL96 - Jul 4, 23:15 UTCJul 5, 04:10 UTC4h 55m
2026-07-04 DAL96 - Jul 4, 21:25 UTCJul 4, 23:10 UTC1h 45m
2026-07-04 DAL96 DTW → CDG Jul 4, 21:22 UTCJul 5, 04:13 UTC6h 51m
2026-07-04 DAL388 SFO → JFK Jul 4, 02:26 UTCJul 4, 15:32 UTC13h 6m
2026-07-03 DAL281 - Jul 3, 08:25 UTCJul 4, 04:45 UTC20h 20m
2026-07-02 DAL281 SEA → PVG Jul 2, 23:39 UTCJul 3, 11:23 UTC11h 44m
2026-07-02 DAL281 - Jul 2, 23:40 UTCJul 3, 09:00 UTC9h 20m
2026-07-02 DAL196 ICN → SEA Jul 2, 10:15 UTCJul 2, 19:20 UTC9h 5m
2026-07-02 DAL196 ICN → SEA Jul 2, 10:11 UTCJul 2, 19:17 UTC9h 6m
2026-07-01 DAL197 SEA → ICN Jul 1, 20:20 UTCJul 2, 00:50 UTC4h 30m
2026-07-01 DAL197 SEA → ICN Jul 1, 20:21 UTCJul 2, 07:37 UTC11h 16m
2026-07-01 DAL68 - Jul 1, 02:10 UTCJul 1, 02:30 UTC20m
2026-07-01 DAL68 TPE → SEA Jul 1, 02:08 UTCJul 1, 12:26 UTC10h 18m
2026-06-30 DAL69 SEA → TPE Jun 30, 06:15 UTCJun 30, 18:05 UTC11h 50m
2026-06-29 DAL196 - Jun 29, 10:15 UTCJun 29, 12:05 UTC1h 50m
2026-06-29 DAL196 ICN → SEA Jun 29, 10:12 UTCJun 29, 19:25 UTC9h 13m
2026-06-29 DAL196 ICN → SEA Jun 29, 10:12 UTCJun 29, 19:32 UTC9h 20m
2026-06-28 DAL197 SEA → ICN Jun 28, 20:29 UTCJun 29, 07:25 UTC10h 55m
2026-06-28 DAL68 - Jun 28, 03:50 UTCJun 28, 12:29 UTC8h 40m
2026-06-28 DAL68 - Jun 28, 02:25 UTCJun 28, 02:44 UTC20m
2026-06-27 DAL69 - Jun 27, 00:00 UTCJun 27, 09:00 UTC9h 0m
2026-06-26 DAL69 SEA → TPE Jun 26, 23:55 UTCJun 27, 11:59 UTC12h 4m
2026-06-26 DAL280 - Jun 26, 10:30 UTCJun 26, 12:00 UTC1h 30m
2026-06-26 DAL280 - Jun 26, 04:24 UTCJun 26, 19:45 UTC15h 20m
2026-06-25 DAL280 - Jun 25, 23:05 UTCJun 26, 19:45 UTC20h 40m
2026-06-25 DAL389 - Jun 25, 21:55 UTCJun 26, 19:00 UTC21h 5m
2026-06-25 DAL389 - Jun 25, 17:05 UTCJun 26, 17:00 UTC23h 55m
2026-06-25 DAL389 - Jun 25, 16:45 UTCJun 26, 04:59 UTC12h 15m
2026-06-25 DAL389 DTW → PVG Jun 25, 16:41 UTCJun 26, 07:10 UTC14h 29m
2026-06-24 DAL274 HND → DTW Jun 24, 09:45 UTCJun 24, 20:40 UTC10h 55m
2026-06-23 DAL275 - Jun 23, 18:14 UTCJun 24, 06:29 UTC12h 15m
2026-06-23 DAL275 DTW → HND Jun 23, 18:14 UTCJun 24, 06:35 UTC12h 21m
2026-06-23 DAL95 DTW → CDG Jun 23, 07:45 UTCJun 23, 09:20 UTC1h 35m

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 N504DN page for operator, model, and routing details .

Mode-S A64924 frequently asked

What is Mode-S code A64924?
A64924 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N504DN.
Where is Mode-S A64924 registered?
Mode-S code A64924 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 A64924 broadcasting right now?
Yes. Mode-S A64924 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A64924, octal 51444444, decimal 10,897,700.
What flights does A64924 operate?
Mode-S A64924 has broadcast 20 distinct callsigns, including DAL389, DAL281, DAL68, DAL196, DAL388.