Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A690BF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N522DZ · AIRBUS A-350-900 · operated by DELTA AIR LINES INC

Hex
A690BF
Octal
51510277
Decimal
10,916,031
Country
US
Tail
N522DZ
Type
A359
Broadcasting now · callsign DAL211 · 40,000 ft
Flights observed
95
Distinct callsigns
20
Country
US
Last broadcast
14h ago

Current position

A690BF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A690BF 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
DAL41 Delta Air Lines 11 2026-05-27
DAL40 Delta Air Lines 8 2026-05-27
DAL500 Delta Air Lines 6 2026-05-03
DAL189 Delta Air Lines 6 2026-05-02
DAL26 Delta Air Lines 5 2026-04-27
DAL211 Delta Air Lines 5 2026-05-29
DAL201 Delta Air Lines 5 2026-05-25
DAL188 Delta Air Lines 5 2026-05-03
DAL39 Delta Air Lines 4 2026-05-20
DAL210 Delta Air Lines 4 2026-05-29
DAL200 Delta Air Lines 4 2026-05-25
DAL7 Delta Air Lines 3 2026-05-09
DAL38 Delta Air Lines 3 2026-05-21
DAL327 Delta Air Lines 3 2026-05-28
DAL294 Delta Air Lines 3 2026-04-21
DAL159 Delta Air Lines 3 2026-04-27
DAL11 Delta Air Lines 3 2026-05-23
DAL8 Delta Air Lines 2 2026-05-10
DAL763 Delta Air Lines 2 2026-05-27
DAL65 Delta Air Lines 2 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DAL211 PRG → JFK May 29, 18:30 UTCMay 29, 18:50 UTC20m
2026-05-29 DAL211 PRG → JFK May 29, 18:27 UTCMay 30, 10:01 UTC15h 34m
2026-05-29 DAL210 JFK → PRG May 29, 01:35 UTCMay 29, 15:25 UTC13h 50m
2026-05-28 DAL327 ATL → BOS May 28, 16:55 UTCMay 28, 20:30 UTC3h 35m
2026-05-27 DAL40 SYD → LAX May 27, 23:35 UTCMay 28, 12:25 UTC12h 50m
2026-05-27 DAL41 LAX → SYD May 27, 06:20 UTCMay 27, 11:35 UTC5h 16m
2026-05-27 DAL41 LAX → SYD May 27, 06:19 UTCMay 27, 20:42 UTC14h 23m
2026-05-27 DAL763 ATL → LGA May 27, 00:14 UTCMay 27, 04:19 UTC4h 5m
2026-05-25 DAL201 JNB → ATL May 25, 20:09 UTCMay 26, 12:05 UTC15h 55m
2026-05-25 DAL200 ATL → JNB May 25, 02:50 UTCMay 25, 17:25 UTC14h 35m
2026-05-24 DAL327 ATL → BOS May 24, 17:00 UTCMay 24, 21:05 UTC4h 5m
2026-05-24 DAL12 ATL → SEA May 24, 00:10 UTCMay 24, 13:50 UTC13h 40m
2026-05-23 DAL11 LHR → MSP May 23, 06:15 UTCMay 23, 21:55 UTC15h 40m
2026-05-22 DAL763 ATL → LGA May 22, 23:35 UTCMay 23, 03:35 UTC3h 59m
2026-05-22 DAL327 ATL → BOS May 22, 16:45 UTCMay 22, 21:10 UTC4h 25m
2026-05-21 DAL38 JFK → VCE May 21, 13:01 UTCMay 21, 22:45 UTC9h 45m
2026-05-21 DAL38 JFK → VCE May 21, 11:56 UTCMay 21, 22:44 UTC10h 48m
2026-05-20 DAL39 JFK → VCE May 20, 19:36 UTCMay 21, 09:18 UTC13h 42m
2026-05-20 DAL39 JFK → VCE May 20, 19:40 UTCMay 21, 08:10 UTC12h 30m
2026-05-17 DAL40 SYD → LAX May 17, 23:45 UTCMay 18, 12:45 UTC13h 0m
2026-05-17 DAL41 LAX → SYD May 17, 05:50 UTCMay 17, 20:45 UTC14h 55m
2026-05-16 DAL38 JFK → VCE May 16, 10:45 UTCMay 16, 21:42 UTC10h 57m
2026-05-15 DAL39 JFK → VCE May 15, 19:09 UTCMay 16, 08:24 UTC13h 15m
2026-05-15 DAL39 JFK → VCE May 15, 19:10 UTCMay 16, 07:11 UTC12h 1m
2026-05-14 DAL40 SYD → LAX May 14, 23:40 UTCMay 15, 12:40 UTC13h 0m
2026-05-14 DAL41 LAX → SYD May 14, 05:50 UTCMay 14, 20:10 UTC14h 20m
2026-05-14 DAL41 LAX → SYD May 14, 05:49 UTCMay 14, 20:03 UTC14h 14m
2026-05-13 DAL40 SYD → LAX May 13, 05:45 UTCMay 13, 18:55 UTC13h 10m
2026-05-12 DAL41 LAX → SYD May 12, 06:20 UTCMay 12, 21:05 UTC14h 45m
2026-05-12 DAL41 LAX → SYD May 12, 06:16 UTCMay 12, 21:04 UTC14h 48m
2026-05-11 DAL291 GUM → KIX May 11, 15:05 UTCMay 11, 22:35 UTC7h 30m
2026-05-11 DAL290 LAX → CDG May 11, 02:35 UTCMay 11, 12:50 UTC10h 15m
2026-05-10 DAL8 HND → LAX May 10, 08:00 UTCMay 10, 17:10 UTC9h 10m
2026-05-10 DAL8 HND → LAX May 10, 08:00 UTCMay 10, 08:35 UTC35m
2026-05-09 DAL7 LAX → HND May 9, 17:49 UTCMay 9, 23:25 UTC5h 35m
2026-05-09 DAL7 LAX → HND May 9, 17:47 UTCMay 10, 05:07 UTC11h 20m
2026-05-09 DAL64 LAS → ATL May 9, 01:05 UTCMay 9, 12:50 UTC11h 45m
2026-05-08 DAL65 LAX → AKL May 8, 06:39 UTCMay 8, 19:10 UTC12h 30m
2026-05-08 DAL65 LAX → AKL May 8, 06:36 UTCMay 8, 19:06 UTC12h 30m
2026-05-06 DAL40 SYD → LAX May 6, 23:25 UTCMay 7, 00:00 UTC35m
2026-05-06 DAL40 SYD → LAX May 6, 23:21 UTCMay 7, 12:23 UTC13h 2m
2026-05-06 DAL41 LAX → SYD May 6, 05:50 UTCMay 6, 20:35 UTC14h 44m
2026-05-04 DAL40 SYD → LAX May 4, 23:31 UTCMay 5, 12:14 UTC12h 43m
2026-05-04 DAL40 SYD → LAX May 4, 23:30 UTCMay 4, 23:45 UTC15m
2026-05-04 DAL41 LAX → SYD May 4, 11:05 UTCMay 4, 20:50 UTC9h 46m
2026-05-04 DAL41 LAX → SYD May 4, 05:55 UTCMay 4, 06:25 UTC30m
2026-05-04 DAL41 LAX → SYD May 4, 05:54 UTCMay 4, 20:53 UTC14h 59m
2026-05-03 DAL500 SLC → SEA May 3, 23:15 UTCMay 4, 03:40 UTC4h 25m
2026-05-03 DAL500 SLC → SEA May 3, 23:14 UTCMay 4, 03:38 UTC4h 24m
2026-05-03 DAL188 ICN → ATL May 3, 07:45 UTCMay 3, 20:30 UTC12h 45m

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 N522DZ page for operator, model, and routing details .

Mode-S A690BF frequently asked

What is Mode-S code A690BF?
A690BF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N522DZ.
Where is Mode-S A690BF registered?
Mode-S code A690BF 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 A690BF broadcasting right now?
Yes. Mode-S A690BF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A690BF, octal 51510277, decimal 10,916,031.
What flights does A690BF operate?
Mode-S A690BF has broadcast 20 distinct callsigns, including DAL41, DAL40, DAL500, DAL189, DAL26.