Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A66CF7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N513DZ · AIRBUS A-350-900 · operated by DELTA AIR LINES INC

Hex
A66CF7
Octal
51466367
Decimal
10,906,871
Country
US
Tail
N513DZ
Type
A359
No current signal · last broadcast 2h ago
Flights observed
205
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A66CF7.

Country allocation

The ICAO 24-bit address A66CF7 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
DAL170 - 17 2026-06-15
DAL147 - 16 2026-06-23
DAL146 - 15 2026-06-24
DAL171 - 14 2026-06-14
DAL294 - 12 2026-06-17
DAL161 - 11 2026-06-14
DAL295 Delta Air Lines 10 2026-06-24
DAL121 - 10 2026-06-16
DAL38 - 8 2026-07-13
DAL41 - 7 2026-07-14
DAL39 - 7 2026-07-12
DAL40 - 6 2026-07-12
DAL291 - 6 2026-07-10
DAL160 - 5 2026-06-13
DAL8 - 4 2026-06-26
DAL290 - 4 2026-07-10
DAL167 - 4 2026-06-25
DAL166 - 4 2026-06-25
DAL133 Delta Air Lines 4 2026-05-25
DAL132 Delta Air Lines 4 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL41 - Jul 14, 06:35 UTCJul 14, 07:05 UTC30m
2026-07-13 DAL38 - Jul 13, 11:40 UTCJul 13, 13:30 UTC1h 50m
2026-07-13 DAL38 PVG → LAX Jul 13, 10:51 UTCJul 13, 22:44 UTC11h 53m
2026-07-13 DAL38 PVG → LAX Jul 13, 10:51 UTCJul 13, 22:47 UTC11h 56m
2026-07-12 DAL39 - Jul 12, 19:40 UTCJul 12, 20:40 UTC1h 0m
2026-07-12 DAL39 LAX → PVG Jul 12, 19:38 UTCJul 13, 07:58 UTC12h 20m
2026-07-12 DAL40 SYD → LAX Jul 12, 00:30 UTCJul 12, 13:20 UTC12h 50m
2026-07-11 DAL41 LAX → SYD Jul 11, 07:05 UTCJul 11, 21:20 UTC14h 15m
2026-07-10 DAL291 - Jul 10, 14:45 UTCJul 11, 01:55 UTC11h 10m
2026-07-10 DAL290 LAX → CDG Jul 10, 01:15 UTCJul 10, 11:25 UTC10h 10m
2026-07-09 DAL38 - Jul 9, 12:00 UTCJul 9, 13:45 UTC1h 45m
2026-07-09 DAL38 PVG → LAX Jul 9, 11:16 UTCJul 9, 22:39 UTC11h 23m
2026-07-09 DAL38 - Jul 9, 05:05 UTCJul 9, 22:55 UTC17h 50m
2026-07-08 DAL39 - Jul 8, 19:00 UTCJul 9, 07:00 UTC12h 0m
2026-07-07 DAL38 - Jul 7, 16:25 UTCJul 8, 03:00 UTC10h 35m
2026-07-05 DAL39 - Jul 5, 20:05 UTCJul 6, 08:00 UTC11h 55m
2026-07-05 DAL39 LAX → PVG Jul 5, 20:01 UTCJul 6, 08:45 UTC12h 44m
2026-07-05 DAL9960 JFK → LAX Jul 5, 12:40 UTCJul 5, 17:35 UTC4h 55m
2026-07-03 DAL958 LAX → JFK Jul 3, 15:55 UTCJul 3, 20:40 UTC4h 45m
2026-07-02 DAL38 PVG → LAX Jul 2, 10:44 UTCJul 2, 21:35 UTC10h 51m
2026-07-01 DAL39 LAX → PVG Jul 1, 18:59 UTCJul 2, 08:15 UTC13h 16m
2026-07-01 DAL39 - Jul 1, 19:00 UTCJul 2, 11:45 UTC16h 45m
2026-06-30 DAL40 - Jun 30, 23:35 UTCJul 1, 12:40 UTC13h 5m
2026-06-30 DAL41 - Jun 30, 06:30 UTCJun 30, 21:15 UTC14h 45m
2026-06-28 DAL40 SYD → LAX Jun 28, 23:42 UTCJun 29, 12:50 UTC13h 8m
2026-06-28 DAL40 SYD → LAX Jun 28, 23:44 UTCJun 29, 12:49 UTC13h 5m
2026-06-28 DAL41 LAX → SYD Jun 28, 06:00 UTCJun 28, 20:15 UTC14h 15m
2026-06-28 DAL41 - Jun 28, 06:05 UTCJun 28, 20:29 UTC14h 25m
2026-06-27 DAL291 - Jun 27, 15:14 UTCJun 28, 01:55 UTC10h 40m
2026-06-27 DAL290 - Jun 27, 02:14 UTCJun 27, 05:29 UTC3h 15m
2026-06-26 DAL8 - Jun 26, 08:20 UTCJun 26, 17:25 UTC9h 5m
2026-06-25 DAL167 - Jun 25, 19:15 UTCJun 25, 21:44 UTC2h 30m
2026-06-25 DAL167 SEA → HND Jun 25, 19:14 UTCJun 26, 04:49 UTC9h 35m
2026-06-25 DAL166 HND → SEA Jun 25, 07:41 UTCJun 25, 15:29 UTC7h 48m
2026-06-25 DAL166 - Jun 25, 07:45 UTCJun 25, 08:24 UTC40m
2026-06-24 DAL295 ATL → HND Jun 24, 15:29 UTCJun 25, 04:45 UTC13h 15m
2026-06-24 DAL146 - Jun 24, 08:04 UTCJun 24, 11:05 UTC3h 0m
2026-06-23 DAL147 - Jun 23, 04:05 UTCJun 23, 06:49 UTC2h 45m
2026-06-22 DAL146 - Jun 22, 07:04 UTCJun 22, 09:54 UTC2h 50m
2026-06-21 DAL147 - Jun 21, 02:50 UTCJun 21, 05:44 UTC2h 55m
2026-06-20 DAL188 ICN → ATL Jun 20, 07:34 UTCJun 20, 21:00 UTC13h 25m
2026-06-19 DAL189 ATL → ICN Jun 19, 13:59 UTCJun 20, 04:09 UTC14h 10m
2026-06-19 DAL146 - Jun 19, 06:39 UTCJun 19, 09:40 UTC3h 0m
2026-06-18 DAL147 - Jun 18, 02:35 UTCJun 18, 05:10 UTC2h 35m
2026-06-17 DAL294 - Jun 17, 07:20 UTCJun 17, 19:05 UTC11h 45m
2026-06-16 DAL121 MSP → HND Jun 16, 16:53 UTCJun 17, 04:34 UTC11h 41m
2026-06-16 DAL121 MSP → HND Jun 16, 16:55 UTCJun 17, 04:35 UTC11h 41m
2026-06-15 DAL170 ICN → MSP Jun 15, 10:50 UTCJun 15, 22:10 UTC11h 20m
2026-06-15 DAL170 ICN → MSP Jun 15, 10:45 UTCJun 15, 22:14 UTC11h 29m
2026-06-14 DAL171 MSP → ICN Jun 14, 19:00 UTCJun 15, 08:27 UTC13h 27m

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 N513DZ page for operator, model, and routing details .

Mode-S A66CF7 frequently asked

What is Mode-S code A66CF7?
A66CF7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N513DZ.
Where is Mode-S A66CF7 registered?
Mode-S code A66CF7 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 A66CF7 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A66CF7, octal 51466367, decimal 10,906,871.
What flights does A66CF7 operate?
Mode-S A66CF7 has broadcast 20 distinct callsigns, including DAL170, DAL147, DAL146, DAL171, DAL294.