Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A6745A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N515DN · AIRBUS A-350-900 · operated by UMB BANK NA TRUSTEE

Hex
A6745A
Octal
51472132
Decimal
10,908,762
Country
US
Tail
N515DN
Type
A359
No current signal · last broadcast 22d ago
Flights observed
182
Distinct callsigns
17
Country
US
Last broadcast
22d ago

Last known position

Most recent position reported by Mode-S A6745A.

Country allocation

The ICAO 24-bit address A6745A 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 17 distinct

Callsign Airline Flights Last seen
DAL389 - 25 2026-06-16
DAL281 - 22 2026-06-13
DAL69 - 18 2026-06-17
DAL68 - 17 2026-06-19
DAL280 Delta Air Lines 13 2026-06-17
DAL197 Delta Air Lines 13 2026-06-19
DAL196 - 12 2026-06-12
DAL388 Delta Air Lines 11 2026-06-14
DAL274 Delta Air Lines 11 2026-06-15
DAL275 - 10 2026-06-14
DAL172 Delta Air Lines 9 2026-06-01
DAL167 Delta Air Lines 9 2026-04-16
DAL173 Delta Air Lines 4 2026-06-02
DAL166 Delta Air Lines 3 2026-04-16
DAL96 Delta Air Lines 2 2026-06-05
DAL95 Delta Air Lines 2 2026-06-06
DAL9972 Delta Air Lines 1 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-21 DAL9972 JFK → ATL Jun 21, 22:15 UTCJun 22, 03:30 UTC5h 15m
2026-06-19 DAL197 SEA → ICN Jun 19, 20:24 UTCJun 20, 06:49 UTC10h 25m
2026-06-19 DAL197 SEA → ICN Jun 19, 20:21 UTCJun 20, 06:58 UTC10h 37m
2026-06-19 DAL68 TPE → SEA Jun 19, 02:19 UTCJun 19, 12:59 UTC10h 40m
2026-06-19 DAL68 TPE → SEA Jun 19, 02:15 UTCJun 19, 12:59 UTC10h 44m
2026-06-17 DAL69 - Jun 17, 23:35 UTCJun 18, 03:55 UTC4h 20m
2026-06-17 DAL69 SEA → TPE Jun 17, 23:35 UTCJun 18, 11:48 UTC12h 13m
2026-06-17 DAL280 SIN → ATL Jun 17, 10:45 UTCJun 17, 12:20 UTC1h 35m
2026-06-17 DAL280 SIN → ATL Jun 17, 04:10 UTCJun 17, 20:00 UTC15h 50m
2026-06-16 DAL389 - Jun 16, 22:35 UTCJun 17, 20:00 UTC21h 25m
2026-06-16 DAL389 - Jun 16, 21:45 UTCJun 17, 20:00 UTC22h 15m
2026-06-16 DAL389 DTW → PVG Jun 16, 16:32 UTCJun 17, 06:54 UTC14h 22m
2026-06-16 DAL389 - Jun 16, 16:35 UTCJun 17, 12:20 UTC19h 46m
2026-06-15 DAL274 ATL → CDG Jun 15, 10:16 UTCJun 15, 21:14 UTC10h 58m
2026-06-15 DAL274 ATL → CDG Jun 15, 10:20 UTCJun 15, 21:14 UTC10h 55m
2026-06-14 DAL275 - Jun 14, 19:10 UTCJun 15, 08:10 UTC12h 59m
2026-06-14 DAL388 SFO → JFK Jun 14, 03:00 UTCJun 14, 15:45 UTC12h 45m
2026-06-14 DAL388 SFO → JFK Jun 14, 02:13 UTCJun 14, 15:46 UTC13h 33m
2026-06-13 DAL281 - Jun 13, 08:35 UTCJun 14, 04:25 UTC19h 50m
2026-06-13 DAL281 - Jun 13, 08:20 UTCJun 14, 04:25 UTC20h 5m
2026-06-12 DAL281 - Jun 12, 23:55 UTCJun 13, 10:15 UTC10h 19m
2026-06-12 DAL196 - Jun 12, 10:15 UTCJun 12, 12:00 UTC1h 45m
2026-06-12 DAL196 ICN → SEA Jun 12, 10:13 UTCJun 12, 19:33 UTC9h 20m
2026-06-11 DAL197 SEA → ICN Jun 11, 20:30 UTCJun 12, 07:45 UTC11h 16m
2026-06-11 DAL197 SEA → ICN Jun 11, 20:27 UTCJun 12, 07:56 UTC11h 29m
2026-06-11 DAL68 TPE → SEA Jun 11, 03:50 UTCJun 11, 04:30 UTC40m
2026-06-11 DAL68 TPE → SEA Jun 11, 02:30 UTCJun 11, 02:45 UTC15m
2026-06-11 DAL68 TPE → SEA Jun 11, 02:25 UTCJun 11, 12:21 UTC9h 56m
2026-06-11 DAL68 TPE → SEA Jun 11, 02:25 UTCJun 11, 12:18 UTC9h 53m
2026-06-10 DAL69 SEA → TPE Jun 10, 00:00 UTCJun 10, 12:30 UTC12h 30m
2026-06-09 DAL69 SEA → TPE Jun 9, 23:56 UTCJun 10, 12:47 UTC12h 51m
2026-06-09 DAL280 SIN → ATL Jun 9, 09:39 UTCJun 9, 19:39 UTC10h 0m
2026-06-08 DAL389 JFK → DEN Jun 8, 16:35 UTCJun 9, 07:11 UTC14h 36m
2026-06-08 DAL389 JFK → DEN Jun 8, 16:40 UTCJun 9, 11:55 UTC19h 15m
2026-06-07 DAL274 ATL → CDG Jun 7, 09:50 UTCJun 7, 21:10 UTC11h 20m
2026-06-06 DAL275 DTW → HND Jun 6, 18:25 UTCJun 7, 07:00 UTC12h 35m
2026-06-06 DAL95 DTW → CDG Jun 6, 07:35 UTCJun 6, 08:30 UTC55m
2026-06-06 DAL95 DTW → CDG Jun 6, 07:30 UTCJun 6, 15:13 UTC7h 43m
2026-06-05 DAL96 NRT → GUM Jun 5, 21:35 UTCJun 6, 04:30 UTC6h 55m
2026-06-05 DAL96 NRT → GUM Jun 5, 21:34 UTCJun 6, 04:24 UTC6h 50m
2026-06-05 DAL388 SFO → JFK Jun 5, 03:45 UTCJun 5, 16:10 UTC12h 25m
2026-06-04 DAL281 SEA → PVG Jun 4, 08:35 UTCJun 5, 04:50 UTC20h 15m
2026-06-04 DAL281 SEA → PVG Jun 4, 08:15 UTCJun 5, 04:50 UTC20h 35m
2026-06-03 DAL281 SEA → PVG Jun 3, 23:55 UTCJun 4, 09:55 UTC10h 0m
2026-06-03 DAL196 ICN → SEA Jun 3, 10:05 UTCJun 3, 19:55 UTC9h 50m
2026-06-02 DAL173 MXP → JFK Jun 2, 17:45 UTCJun 3, 05:10 UTC11h 25m
2026-06-01 DAL172 MNL → JFK Jun 1, 10:45 UTCJun 1, 12:30 UTC1h 45m
2026-06-01 DAL172 MNL → JFK Jun 1, 10:44 UTCJun 1, 21:48 UTC11h 4m
2026-05-31 DAL173 MXP → JFK May 31, 17:25 UTCJun 1, 05:10 UTC11h 45m
2026-05-30 DAL172 MNL → JFK May 30, 06:12 UTCMay 30, 07:07 UTC55m

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 N515DN page for operator, model, and routing details .

Mode-S A6745A frequently asked

What is Mode-S code A6745A?
A6745A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N515DN.
Where is Mode-S A6745A registered?
Mode-S code A6745A 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 A6745A broadcasting right now?
No active broadcast right now. Last signal was 22d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6745A, octal 51472132, decimal 10,908,762.
What flights does A6745A operate?
Mode-S A6745A has broadcast 17 distinct callsigns, including DAL389, DAL281, DAL69, DAL68, DAL280.