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
Transponder active on ground
Flights observed
131
Distinct callsigns
14
Country
US
Last broadcast
3h 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 14 distinct

Callsign Airline Flights Last seen
DAL389 Delta Air Lines 19 2026-05-23
DAL281 Delta Air Lines 16 2026-05-20
DAL69 Delta Air Lines 14 2026-05-25
DAL68 Delta Air Lines 11 2026-05-26
DAL280 Delta Air Lines 10 2026-05-24
DAL197 Delta Air Lines 9 2026-05-26
DAL196 Delta Air Lines 9 2026-05-19
DAL167 Delta Air Lines 9 2026-04-16
DAL388 Delta Air Lines 8 2026-05-21
DAL275 Delta Air Lines 8 2026-05-21
DAL274 Delta Air Lines 8 2026-05-22
DAL172 Delta Air Lines 5 2026-05-29
DAL166 Delta Air Lines 3 2026-04-16
DAL173 Delta Air Lines 2 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DAL172 MNL → JFK May 29, 10:30 UTCMay 29, 22:35 UTC12h 5m
2026-05-29 DAL172 MNL → JFK May 29, 10:28 UTCMay 29, 22:35 UTC12h 7m
2026-05-28 DAL173 MXP → JFK May 28, 17:35 UTCMay 29, 05:55 UTC12h 20m
2026-05-27 DAL172 MNL → JFK May 27, 10:25 UTCMay 27, 21:35 UTC11h 10m
2026-05-26 DAL197 SEA → ICN May 26, 20:20 UTCMay 27, 07:20 UTC11h 1m
2026-05-26 DAL68 TPE → SEA May 26, 03:50 UTCMay 26, 12:50 UTC9h 0m
2026-05-26 DAL68 TPE → SEA May 26, 02:15 UTCMay 26, 02:35 UTC20m
2026-05-25 DAL69 SEA → TPE May 25, 01:55 UTCMay 25, 11:05 UTC9h 10m
2026-05-24 DAL69 SEA → TPE May 24, 23:35 UTCMay 24, 23:46 UTC11m
2026-05-24 DAL280 SIN → ATL May 24, 11:00 UTCMay 24, 12:20 UTC1h 20m
2026-05-24 DAL280 SIN → ATL May 24, 03:30 UTCMay 24, 19:55 UTC16h 25m
2026-05-23 DAL280 SIN → ATL May 23, 22:35 UTCMay 24, 19:55 UTC21h 20m
2026-05-23 DAL389 JFK → DEN May 23, 21:45 UTCMay 24, 19:55 UTC22h 10m
2026-05-23 DAL389 JFK → DEN May 23, 16:35 UTCMay 24, 12:20 UTC19h 45m
2026-05-23 DAL389 JFK → DEN May 23, 16:20 UTCMay 24, 05:05 UTC12h 46m
2026-05-23 DAL389 JFK → DEN May 23, 16:16 UTCMay 24, 06:11 UTC13h 55m
2026-05-22 DAL274 ATL → CDG May 22, 09:40 UTCMay 22, 20:50 UTC11h 10m
2026-05-22 DAL274 ATL → CDG May 22, 09:40 UTCMay 22, 20:50 UTC11h 10m
2026-05-21 DAL275 DTW → HND May 21, 18:10 UTCMay 22, 00:45 UTC6h 35m
2026-05-21 DAL275 DTW → HND May 21, 18:10 UTCMay 22, 06:41 UTC12h 31m
2026-05-21 DAL388 SFO → JFK May 21, 02:16 UTCMay 21, 15:08 UTC12h 52m
2026-05-21 DAL388 SFO → JFK May 21, 02:16 UTCMay 21, 15:04 UTC12h 48m
2026-05-20 DAL281 SEA → PVG May 20, 08:55 UTCMay 21, 04:30 UTC19h 35m
2026-05-19 DAL281 SEA → PVG May 19, 23:49 UTCMay 20, 11:41 UTC11h 52m
2026-05-19 DAL281 SEA → PVG May 19, 23:50 UTCMay 20, 10:30 UTC10h 41m
2026-05-19 DAL196 ICN → SEA May 19, 10:10 UTCMay 19, 19:35 UTC9h 25m
2026-05-18 DAL197 SEA → ICN May 18, 20:25 UTCMay 19, 07:30 UTC11h 5m
2026-05-18 DAL68 TPE → SEA May 18, 02:50 UTCMay 18, 05:05 UTC2h 15m
2026-05-18 DAL68 TPE → SEA May 18, 02:05 UTCMay 18, 02:20 UTC15m
2026-05-18 DAL68 TPE → SEA May 18, 02:04 UTCMay 18, 12:30 UTC10h 26m
2026-05-16 DAL69 SEA → TPE May 16, 23:10 UTCMay 17, 09:20 UTC10h 10m
2026-05-16 DAL69 SEA → TPE May 16, 23:06 UTCMay 17, 11:03 UTC11h 57m
2026-05-16 DAL280 SIN → ATL May 16, 09:52 UTCMay 16, 19:51 UTC9h 59m
2026-05-16 DAL280 SIN → ATL May 16, 09:52 UTCMay 16, 19:46 UTC9h 54m
2026-05-15 DAL389 JFK → DEN May 15, 20:45 UTCMay 16, 19:50 UTC23h 6m
2026-05-15 DAL389 JFK → DEN May 15, 16:13 UTCMay 16, 06:32 UTC14h 19m
2026-05-15 DAL389 JFK → DEN May 15, 16:15 UTCMay 16, 12:45 UTC20h 31m
2026-05-14 DAL274 ATL → CDG May 14, 10:05 UTCMay 14, 21:15 UTC11h 10m
2026-05-13 DAL275 DTW → HND May 13, 18:44 UTCMay 14, 07:26 UTC12h 42m
2026-05-13 DAL275 DTW → HND May 13, 18:45 UTCMay 14, 07:40 UTC12h 55m
2026-05-13 DAL388 SFO → JFK May 13, 03:50 UTCMay 13, 15:50 UTC12h 0m
2026-05-12 DAL388 SFO → JFK May 12, 08:35 UTCMay 13, 05:15 UTC20h 40m
2026-05-12 DAL281 SEA → PVG May 12, 08:00 UTCMay 13, 05:15 UTC21h 15m
2026-05-12 DAL281 SEA → PVG May 12, 02:45 UTCMay 12, 03:35 UTC50m
2026-05-11 DAL281 SEA → PVG May 11, 23:25 UTCMay 12, 10:35 UTC11h 10m
2026-05-11 DAL196 ICN → SEA May 11, 10:20 UTCMay 11, 19:40 UTC9h 20m
2026-05-10 DAL197 SEA → ICN May 10, 20:50 UTCMay 11, 07:35 UTC10h 45m
2026-05-10 DAL68 TPE → SEA May 10, 03:50 UTCMay 10, 12:05 UTC8h 15m
2026-05-10 DAL68 TPE → SEA May 10, 02:10 UTCMay 10, 02:24 UTC15m
2026-05-10 DAL68 TPE → SEA May 10, 02:06 UTCMay 10, 12:06 UTC10h 0m

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?
Mode-S A6745A 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 A6745A, octal 51472132, decimal 10,908,762.
What flights does A6745A operate?
Mode-S A6745A has broadcast 14 distinct callsigns, including DAL389, DAL281, DAL69, DAL68, DAL280.