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
No current signal · last broadcast Jul 26, 21:00 UTC
Flights observed
207
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:00 UTC

Last known position

Most recent position reported by Mode-S A690BF.

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
DAL201 - 15 2026-07-17
DAL188 Delta Air Lines 15 2026-07-26
DAL88 Delta Air Lines 12 2026-07-07
DAL41 Delta Air Lines 12 2026-05-31
DAL200 - 11 2026-07-17
DAL189 Delta Air Lines 11 2026-07-25
DAL327 - 10 2026-07-07
DAL89 Delta Air Lines 9 2026-07-06
DAL40 Delta Air Lines 9 2026-05-31
DAL26 - 8 2026-07-16
DAL211 Delta Air Lines 8 2026-07-24
DAL210 Delta Air Lines 8 2026-07-24
DAL763 - 7 2026-07-06
DAL500 Delta Air Lines 6 2026-05-03
DAL159 - 6 2026-07-11
DAL39 Delta Air Lines 5 2026-06-10
DAL38 Delta Air Lines 5 2026-06-11
DAL172 - 5 2026-07-14
DAL11 Delta Air Lines 5 2026-07-02
DAL27 - 4 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL188 ICN → ATL Jul 26, 07:55 UTCJul 26, 09:40 UTC1h 45m
2026-07-26 DAL188 ICN → ATL Jul 26, 07:52 UTCJul 26, 20:52 UTC13h 0m
2026-07-25 DAL189 ATL → ICN Jul 25, 14:00 UTCJul 26, 05:05 UTC15h 5m
2026-07-24 DAL211 PRG → JFK Jul 24, 18:23 UTCJul 25, 09:23 UTC15h 0m
2026-07-24 DAL211 PRG → JFK Jul 24, 18:25 UTCJul 25, 09:25 UTC15h 0m
2026-07-24 DAL210 JFK → PRG Jul 24, 01:31 UTCJul 24, 16:11 UTC14h 40m
2026-07-24 DAL210 JFK → PRG Jul 24, 01:35 UTCJul 24, 02:25 UTC50m
2026-07-23 DAL188 ICN → ATL Jul 23, 07:50 UTCJul 23, 09:30 UTC1h 40m
2026-07-23 DAL188 ICN → ATL Jul 23, 07:45 UTCJul 23, 21:04 UTC13h 19m
2026-07-23 DAL188 ICN → ATL Jul 23, 07:45 UTCJul 23, 21:00 UTC13h 15m
2026-07-22 DAL189 ATL → ICN Jul 22, 14:10 UTCJul 23, 04:55 UTC14h 45m
2026-07-22 DAL9994 ATL → TLS Jul 22, 00:10 UTCJul 22, 02:15 UTC2h 5m
2026-07-21 DAL9994 ATL → TLS Jul 21, 12:15 UTCJul 21, 14:10 UTC1h 55m
2026-07-21 DAL9994 ATL → TLS Jul 21, 12:14 UTCJul 21, 13:55 UTC1h 41m
2026-07-20 DAL188 ICN → ATL Jul 20, 07:50 UTCJul 20, 09:40 UTC1h 50m
2026-07-20 DAL188 ICN → ATL Jul 20, 07:45 UTCJul 20, 21:14 UTC13h 29m
2026-07-19 DAL189 ATL → ICN Jul 19, 13:55 UTCJul 20, 04:25 UTC14h 30m
2026-07-17 DAL201 - Jul 17, 21:39 UTCJul 17, 22:05 UTC25m
2026-07-17 DAL201 JNB → ATL Jul 17, 21:38 UTCJul 18, 12:25 UTC14h 47m
2026-07-17 DAL200 ATL → JNB Jul 17, 03:34 UTCJul 17, 18:55 UTC15h 20m
2026-07-16 DAL26 ICN → ATL Jul 16, 10:00 UTCJul 17, 00:04 UTC14h 5m
2026-07-16 DAL26 ICN → ATL Jul 16, 09:55 UTCJul 17, 00:08 UTC14h 13m
2026-07-15 DAL173 SLC → ICN Jul 15, 18:00 UTCJul 16, 05:35 UTC11h 35m
2026-07-14 DAL172 - Jul 14, 10:40 UTCJul 14, 11:45 UTC1h 5m
2026-07-14 DAL172 ICN → SLC Jul 14, 10:37 UTCJul 14, 22:01 UTC11h 24m
2026-07-14 DAL172 ICN → SLC Jul 14, 10:37 UTCJul 14, 22:14 UTC11h 37m
2026-07-13 DAL173 SLC → ICN Jul 13, 18:10 UTCJul 14, 06:10 UTC12h 0m
2026-07-12 DAL172 ICN → SLC Jul 12, 10:35 UTCJul 12, 21:40 UTC11h 5m
2026-07-11 DAL159 - Jul 11, 17:00 UTCJul 12, 06:25 UTC13h 25m
2026-07-11 DAL159 DTW → ICN Jul 11, 16:57 UTCJul 12, 06:28 UTC13h 31m
2026-07-11 DAL158 - Jul 11, 01:30 UTCJul 11, 14:15 UTC12h 45m
2026-07-10 DAL27 ATL → ICN Jul 10, 04:10 UTCJul 10, 20:15 UTC16h 5m
2026-07-08 DAL201 - Jul 8, 20:05 UTCJul 8, 20:35 UTC30m
2026-07-08 DAL201 JNB → ATL Jul 8, 20:04 UTCJul 9, 11:40 UTC15h 36m
2026-07-08 DAL200 - Jul 8, 02:25 UTCJul 8, 17:10 UTC14h 45m
2026-07-07 DAL327 LAX → ATL Jul 7, 18:40 UTCJul 7, 22:35 UTC3h 55m
2026-07-07 DAL88 ATL → CDG Jul 7, 03:20 UTCJul 7, 16:05 UTC12h 45m
2026-07-06 DAL89 CDG → ATL Jul 6, 07:30 UTCJul 6, 09:00 UTC1h 30m
2026-07-06 DAL89 CDG → ATL Jul 6, 07:26 UTCJul 6, 21:50 UTC14h 24m
2026-07-06 DAL763 - Jul 6, 01:00 UTCJul 6, 05:05 UTC4h 5m
2026-07-05 DAL327 LAX → ATL Jul 5, 16:50 UTCJul 5, 20:35 UTC3h 45m
2026-07-05 DAL327 LAX → ATL Jul 5, 16:49 UTCJul 5, 20:33 UTC3h 44m
2026-07-05 DAL88 ATL → CDG Jul 5, 02:45 UTCJul 5, 14:40 UTC11h 55m
2026-07-05 DAL88 ATL → CDG Jul 5, 01:47 UTCJul 5, 14:28 UTC12h 41m
2026-07-05 DAL88 ATL → CDG Jul 5, 01:50 UTCJul 5, 02:10 UTC20m
2026-07-04 DAL89 CDG → ATL Jul 4, 06:50 UTCJul 4, 20:50 UTC14h 0m
2026-07-04 DAL763 - Jul 4, 00:00 UTCJul 4, 04:20 UTC4h 20m
2026-07-03 DAL327 - Jul 3, 17:30 UTCJul 3, 21:20 UTC3h 50m
2026-07-03 DAL12 - Jul 3, 01:20 UTCJul 3, 14:55 UTC13h 35m
2026-07-03 DAL12 MEL → LAX Jul 3, 01:19 UTCJul 3, 14:59 UTC13h 40m

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?
No active broadcast right now. Last signal was Jul 26, 21:00 UTC.
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 DAL201, DAL188, DAL88, DAL41, DAL200.