Apparatus

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sensors Mode-S transponder

A65449

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N507DN · AIRBUS A-350-900 · operated by DELTA AIR LINES INC

Hex
A65449
Octal
51452111
Decimal
10,900,553
Country
US
Tail
N507DN
Type
A359
No current signal · last broadcast 1h ago
Flights observed
218
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A65449.

Country allocation

The ICAO 24-bit address A65449 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 - 29 2026-07-12
DAL281 - 21 2026-07-13
DAL69 - 19 2026-07-04
DAL68 - 19 2026-07-06
DAL280 - 18 2026-07-13
DAL197 Delta Air Lines 15 2026-07-06
DAL388 - 13 2026-07-09
DAL275 - 12 2026-07-10
DAL196 - 11 2026-07-07
DAL274 - 10 2026-07-11
DAL172 Delta Air Lines 10 2026-05-25
DAL173 Delta Air Lines 9 2026-05-26
DAL167 Delta Air Lines 5 2026-05-22
DAL95 - 4 2026-07-10
DAL166 Delta Air Lines 4 2026-05-23
DAL298 Delta Air Lines 3 2026-06-11
DAL96 - 2 2026-07-09
DAL299 Delta Air Lines 2 2026-06-11
DAL1646 Delta Air Lines 2 2026-04-14
DAL82 Delta Air Lines 1 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL281 - Jul 13, 23:50 UTCJul 14, 10:15 UTC10h 25m
2026-07-13 DAL280 - Jul 13, 10:40 UTCJul 13, 12:15 UTC1h 35m
2026-07-13 DAL280 PVG → SEA Jul 13, 09:55 UTCJul 13, 20:33 UTC10h 38m
2026-07-13 DAL280 - Jul 13, 04:00 UTCJul 13, 20:35 UTC16h 35m
2026-07-12 DAL280 - Jul 12, 22:20 UTCJul 13, 20:35 UTC22h 15m
2026-07-12 DAL389 - Jul 12, 21:50 UTCJul 13, 20:15 UTC22h 25m
2026-07-12 DAL389 - Jul 12, 18:20 UTCJul 13, 12:35 UTC18h 15m
2026-07-12 DAL389 - Jul 12, 16:30 UTCJul 13, 05:31 UTC13h 0m
2026-07-12 DAL389 DTW → PVG Jul 12, 16:26 UTCJul 13, 06:13 UTC13h 47m
2026-07-11 DAL274 - Jul 11, 09:50 UTCJul 11, 22:35 UTC12h 45m
2026-07-10 DAL275 DTW → HND Jul 10, 18:24 UTCJul 11, 06:49 UTC12h 25m
2026-07-10 DAL275 - Jul 10, 18:25 UTCJul 11, 06:40 UTC12h 15m
2026-07-10 DAL95 - Jul 10, 07:35 UTCJul 10, 08:15 UTC40m
2026-07-10 DAL95 CDG → DTW Jul 10, 07:30 UTCJul 10, 15:22 UTC7h 52m
2026-07-09 DAL96 - Jul 9, 21:25 UTCJul 10, 04:25 UTC7h 0m
2026-07-09 DAL388 - Jul 9, 03:55 UTCJul 9, 16:20 UTC12h 25m
2026-07-08 DAL281 SEA → PVG Jul 8, 00:05 UTCJul 8, 11:22 UTC11h 17m
2026-07-08 DAL281 - Jul 8, 00:05 UTCJul 8, 10:40 UTC10h 35m
2026-07-07 DAL196 ICN → SEA Jul 7, 10:20 UTCJul 7, 19:50 UTC9h 30m
2026-07-06 DAL197 SEA → ICN Jul 6, 20:40 UTCJul 7, 07:15 UTC10h 35m
2026-07-06 DAL68 - Jul 6, 03:15 UTCJul 6, 04:15 UTC1h 0m
2026-07-06 DAL68 - Jul 6, 01:40 UTCJul 6, 02:00 UTC20m
2026-07-06 DAL68 TPE → SEA Jul 6, 01:40 UTCJul 6, 12:02 UTC10h 22m
2026-07-06 DAL68 TPE → SEA Jul 6, 01:40 UTCJul 6, 12:01 UTC10h 21m
2026-07-04 DAL69 - Jul 4, 23:45 UTCJul 5, 11:25 UTC11h 40m
2026-07-04 DAL280 - Jul 4, 11:50 UTCJul 4, 13:30 UTC1h 40m
2026-07-04 DAL280 - Jul 4, 05:20 UTCJul 4, 21:05 UTC15h 45m
2026-07-03 DAL280 - Jul 3, 22:20 UTCJul 4, 21:05 UTC22h 45m
2026-07-03 DAL389 - Jul 3, 18:20 UTCJul 4, 13:30 UTC19h 10m
2026-07-03 DAL389 - Jul 3, 16:40 UTCJul 4, 07:20 UTC14h 40m
2026-07-03 DAL389 DTW → PVG Jul 3, 16:38 UTCJul 4, 08:17 UTC15h 39m
2026-07-02 DAL274 HND → DTW Jul 2, 09:45 UTCJul 2, 20:50 UTC11h 5m
2026-07-01 DAL275 DTW → HND Jul 1, 18:40 UTCJul 2, 06:57 UTC12h 17m
2026-07-01 DAL275 - Jul 1, 18:40 UTCJul 2, 07:10 UTC12h 30m
2026-07-01 DAL95 DTW → CDG Jul 1, 08:05 UTCJul 1, 16:15 UTC8h 10m
2026-06-30 DAL96 NRT → GUM Jun 30, 21:25 UTCJul 1, 04:25 UTC7h 0m
2026-06-29 DAL785 PHX → DTW Jun 29, 22:59 UTCJun 30, 02:05 UTC3h 6m
2026-06-29 DAL813 - Jun 29, 17:55 UTCJun 29, 21:24 UTC3h 30m
2026-06-29 DAL388 SFO → JFK Jun 29, 03:10 UTCJun 29, 15:19 UTC12h 10m
2026-06-28 DAL388 SFO → JFK Jun 28, 10:19 UTCJun 29, 04:34 UTC18h 15m
2026-06-28 DAL281 - Jun 28, 09:05 UTCJun 29, 04:34 UTC19h 30m
2026-06-28 DAL281 - Jun 28, 00:20 UTCJun 28, 11:04 UTC10h 45m
2026-06-27 DAL280 - Jun 27, 05:44 UTCJun 27, 21:25 UTC15h 40m
2026-06-27 DAL389 - Jun 27, 00:20 UTCJun 27, 21:25 UTC21h 5m
2026-06-26 DAL389 - Jun 26, 22:40 UTCJun 27, 21:25 UTC22h 45m
2026-06-26 DAL389 - Jun 26, 18:20 UTCJun 27, 13:44 UTC19h 25m
2026-06-26 DAL388 SFO → JFK Jun 26, 03:20 UTCJun 26, 15:29 UTC12h 10m
2026-06-26 DAL388 SFO → JFK Jun 26, 02:30 UTCJun 26, 15:30 UTC13h 0m
2026-06-25 DAL388 SFO → JFK Jun 25, 10:20 UTCJun 26, 10:15 UTC23h 55m
2026-06-25 DAL281 - Jun 25, 08:20 UTCJun 26, 04:55 UTC20h 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 N507DN page for operator, model, and routing details .

Mode-S A65449 frequently asked

What is Mode-S code A65449?
A65449 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N507DN.
Where is Mode-S A65449 registered?
Mode-S code A65449 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 A65449 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 A65449, octal 51452111, decimal 10,900,553.
What flights does A65449 operate?
Mode-S A65449 has broadcast 20 distinct callsigns, including DAL389, DAL281, DAL69, DAL68, DAL280.