Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A65BBC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N509DT · AIRBUS A-321neo · operated by DELTA AIR LINES INC

Hex
A65BBC
Octal
51455674
Decimal
10,902,460
Country
US
Tail
N509DT
Type
A21N
Broadcasting now · callsign DAL2713 · 32,000 ft
Flights observed
373
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A65BBC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A65BBC 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
DAL1780 Delta Air Lines 15 2026-06-13
DAL328 - 11 2026-06-22
DAL1961 - 11 2026-07-02
DAL1966 Delta Air Lines 9 2026-05-09
DAL359 - 7 2026-07-11
DAL474 Delta Air Lines 6 2026-05-15
DAL351 - 6 2026-07-10
DAL340 Delta Air Lines 6 2026-05-12
DAL332 Delta Air Lines 6 2026-05-15
DAL2436 - 6 2026-07-14
DAL2032 Delta Air Lines 6 2026-06-10
DAL1975 - 6 2026-07-08
DAL652 - 5 2026-07-11
DAL443 - 5 2026-06-22
DAL440 Delta Air Lines 5 2026-06-22
DAL356 Delta Air Lines 5 2026-04-25
DAL604 Delta Air Lines 4 2026-04-15
DAL594 Delta Air Lines 4 2026-04-14
DAL510 Delta Air Lines 4 2026-06-06
DAL485 Delta Air Lines 4 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 DAL2713 - Jul 15, 02:45 UTCJul 15, 03:00 UTC15m
2026-07-15 DAL1672 LAS → SLC Jul 15, 00:05 UTCJul 15, 01:05 UTC1h 0m
2026-07-14 DAL1672 SLC → LAS Jul 14, 21:50 UTCJul 14, 22:55 UTC1h 4m
2026-07-14 DAL464 BOS → SLC Jul 14, 15:35 UTCJul 14, 20:00 UTC4h 25m
2026-07-14 DAL2436 MCO → BOS Jul 14, 11:00 UTCJul 14, 13:40 UTC2h 40m
2026-07-14 DAL2436 MCO → BOS Jul 14, 11:00 UTCJul 14, 13:41 UTC2h 41m
2026-07-14 DAL1513 BOS → MCO Jul 14, 01:05 UTCJul 14, 03:35 UTC2h 30m
2026-07-13 DAL438 SEA → BOS Jul 13, 18:30 UTCJul 13, 23:10 UTC4h 40m
2026-07-13 DAL438 SEA → BOS Jul 13, 18:28 UTCJul 13, 23:09 UTC4h 41m
2026-07-12 DAL648 ATL → SEA Jul 12, 15:30 UTCJul 12, 20:05 UTC4h 35m
2026-07-12 DAL648 ATL → SEA Jul 12, 15:29 UTCJul 12, 20:07 UTC4h 38m
2026-07-11 DAL906 SLC → ATL Jul 11, 19:50 UTCJul 11, 23:00 UTC3h 10m
2026-07-11 DAL387 ATL → SLC Jul 11, 14:30 UTCJul 11, 17:55 UTC3h 25m
2026-07-11 DAL652 SEA → ATL Jul 11, 08:15 UTCJul 11, 12:30 UTC4h 15m
2026-07-11 DAL359 - Jul 11, 04:55 UTCJul 11, 05:45 UTC50m
2026-07-11 DAL359 - Jul 11, 00:30 UTCJul 11, 00:40 UTC10m
2026-07-11 DAL359 HNL → SEA Jul 11, 00:26 UTCJul 11, 05:40 UTC5h 14m
2026-07-10 DAL351 - Jul 10, 21:05 UTCJul 10, 21:20 UTC15m
2026-07-10 DAL351 - Jul 10, 15:55 UTCJul 10, 16:45 UTC50m
2026-07-10 DAL375 - Jul 10, 12:35 UTCJul 10, 13:25 UTC50m
2026-07-09 DAL428 - Jul 9, 21:50 UTCJul 10, 03:05 UTC5h 15m
2026-07-09 DAL428 LAX → LIH Jul 9, 21:47 UTCJul 10, 03:16 UTC5h 29m
2026-07-09 DAL2119 - Jul 9, 16:40 UTCJul 9, 20:05 UTC3h 25m
2026-07-09 DAL2119 MSP → LAX Jul 9, 16:40 UTCJul 9, 20:01 UTC3h 21m
2026-07-09 DAL1138 BOS → MSP Jul 9, 11:35 UTCJul 9, 14:10 UTC2h 35m
2026-07-09 DAL865 ATL → BOS Jul 9, 03:20 UTCJul 9, 05:15 UTC1h 55m
2026-07-08 DAL875 SLC → ATL Jul 8, 22:05 UTCJul 9, 01:25 UTC3h 20m
2026-07-08 DAL917 - Jul 8, 16:10 UTCJul 8, 20:10 UTC4h 0m
2026-07-08 DAL917 - Jul 8, 15:40 UTCJul 8, 16:05 UTC25m
2026-07-08 DAL917 JFK → SLC Jul 8, 15:37 UTCJul 8, 19:57 UTC4h 20m
2026-07-08 DAL1993 STI → JFK Jul 8, 10:09 UTCJul 8, 13:21 UTC3h 12m
2026-07-08 DAL1975 JFK → JFK Jul 8, 03:15 UTCJul 8, 13:20 UTC10h 5m
2026-07-07 DAL671 SLC → JFK Jul 7, 20:40 UTCJul 8, 00:55 UTC4h 15m
2026-07-07 DAL1698 LAS → SLC Jul 7, 17:20 UTCJul 7, 18:10 UTC50m
2026-07-07 DAL1698 SLC → LAS Jul 7, 14:40 UTCJul 7, 15:40 UTC1h 0m
2026-07-07 DAL863 JFK → SLC Jul 7, 00:30 UTCJul 7, 04:45 UTC4h 15m
2026-07-06 DAL1822 - Jul 6, 20:30 UTCJul 6, 21:00 UTC30m
2026-07-06 DAL1822 STI → JFK Jul 6, 18:07 UTCJul 6, 21:24 UTC3h 17m
2026-07-06 DAL1845 JFK → STI Jul 6, 13:18 UTCJul 6, 16:23 UTC3h 5m
2026-07-06 DAL1845 - Jul 6, 13:20 UTCJul 6, 14:00 UTC40m
2026-07-06 DAL1863 SDQ → JFK Jul 6, 00:30 UTCJul 6, 04:27 UTC3h 57m
2026-07-05 DAL1908 - Jul 5, 19:15 UTCJul 6, 03:00 UTC7h 45m
2026-07-05 DAL336 DEN → JFK Jul 5, 13:00 UTCJul 5, 16:25 UTC3h 25m
2026-07-05 DAL424 JFK → ATL Jul 5, 04:20 UTCJul 5, 07:55 UTC3h 35m
2026-07-05 DAL1957 - Jul 5, 00:30 UTCJul 5, 01:25 UTC55m
2026-07-04 DAL1955 JFK → MBJ Jul 4, 16:20 UTCJul 4, 20:40 UTC4h 20m
2026-07-04 DAL1955 - Jul 4, 16:25 UTCJul 4, 19:00 UTC2h 35m
2026-07-03 DAL1863 SDQ → JFK Jul 3, 23:43 UTCJul 4, 03:03 UTC3h 20m
2026-07-03 DAL1863 JFK → JFK Jul 3, 18:40 UTCJul 4, 03:15 UTC8h 35m
2026-07-03 DAL336 DEN → JFK Jul 3, 12:50 UTCJul 3, 16:25 UTC3h 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 N509DT page for operator, model, and routing details .

Mode-S A65BBC frequently asked

What is Mode-S code A65BBC?
A65BBC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N509DT.
Where is Mode-S A65BBC registered?
Mode-S code A65BBC 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 A65BBC broadcasting right now?
Yes. Mode-S A65BBC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A65BBC, octal 51455674, decimal 10,902,460.
What flights does A65BBC operate?
Mode-S A65BBC has broadcast 20 distinct callsigns, including DAL1780, DAL328, DAL1961, DAL1966, DAL359.