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 Jul 26, 21:45 UTC
Flights observed
227
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

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
DAL41 Delta Air Lines 12 2026-07-25
DAL40 Delta Air Lines 12 2026-07-26
DAL294 - 12 2026-06-17
DAL161 - 11 2026-06-14
DAL295 Delta Air Lines 10 2026-06-24
DAL121 - 10 2026-06-16
DAL291 Delta Air Lines 9 2026-07-24
DAL39 Delta Air Lines 8 2026-07-26
DAL38 - 8 2026-07-13
DAL290 Delta Air Lines 7 2026-07-24
DAL160 - 5 2026-06-13
DAL8 - 4 2026-06-26
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
2026-07-26 DAL39 JFK → VCE Jul 26, 21:25 UTCJul 26, 21:45 UTC20m
2026-07-26 DAL40 SYD → LAX Jul 26, 03:06 UTCJul 26, 16:20 UTC13h 14m
2026-07-26 DAL40 SYD → LAX Jul 26, 03:10 UTCJul 26, 03:45 UTC35m
2026-07-25 DAL41 LAX → SYD Jul 25, 06:45 UTCJul 25, 07:10 UTC25m
2026-07-25 DAL41 LAX → SYD Jul 25, 06:40 UTCJul 25, 20:59 UTC14h 19m
2026-07-24 DAL291 GUM → KIX Jul 24, 15:10 UTCJul 25, 02:30 UTC11h 20m
2026-07-24 DAL290 LAX → CDG Jul 24, 01:30 UTCJul 24, 11:20 UTC9h 50m
2026-07-23 DAL40 SYD → LAX Jul 23, 00:20 UTCJul 23, 14:00 UTC13h 40m
2026-07-22 DAL41 LAX → SYD Jul 22, 20:35 UTCJul 22, 22:10 UTC1h 35m
2026-07-21 DAL291 GUM → KIX Jul 21, 14:35 UTCJul 22, 01:40 UTC11h 5m
2026-07-21 DAL290 LAX → CDG Jul 21, 01:35 UTCJul 21, 11:45 UTC10h 10m
2026-07-19 DAL40 SYD → LAX Jul 19, 23:45 UTCJul 20, 13:25 UTC13h 40m
2026-07-19 DAL41 LAX → SYD Jul 19, 06:10 UTCJul 19, 20:25 UTC14h 15m
2026-07-18 DAL291 - Jul 18, 14:50 UTCJul 19, 01:30 UTC10h 40m
2026-07-18 DAL290 LAX → CDG Jul 18, 01:15 UTCJul 18, 11:20 UTC10h 6m
2026-07-17 DAL88 HKG → LAX Jul 17, 02:13 UTCJul 17, 15:45 UTC13h 32m
2026-07-17 DAL88 HKG → LAX Jul 17, 02:15 UTCJul 17, 15:55 UTC13h 40m
2026-07-16 DAL89 - Jul 16, 06:50 UTCJul 16, 20:55 UTC14h 5m
2026-07-16 DAL89 LAX → HKG Jul 16, 06:49 UTCJul 16, 20:39 UTC13h 50m
2026-07-14 DAL40 SYD → LAX Jul 14, 23:37 UTCJul 15, 12:46 UTC13h 9m
2026-07-14 DAL40 - Jul 14, 23:40 UTCJul 15, 13:00 UTC13h 20m
2026-07-14 DAL41 - Jul 14, 06:35 UTCJul 14, 20:45 UTC14h 10m
2026-07-14 DAL41 LAX → SYD Jul 14, 06:34 UTCJul 14, 20:37 UTC14h 3m
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

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 Jul 26, 21:45 UTC.
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, DAL41.