Apparatus

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sensors Mode-S transponder

A69BD9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N525DN · operated by DELTA AIR LINES INC

Hex
A69BD9
Octal
51515731
Decimal
10,918,873
Country
US
Tail
N525DN
Type
A359
Broadcasting now · callsign DAL172 · 35,000 ft
Flights observed
212
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:15 UTC

Current position

A69BD9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A69BD9 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
DAL188 Delta Air Lines 16 2026-07-25
DAL200 Delta Air Lines 15 2026-07-22
DAL89 - 14 2026-07-13
DAL27 Delta Air Lines 14 2026-07-26
DAL211 - 13 2026-07-10
DAL201 Delta Air Lines 13 2026-07-22
DAL210 - 12 2026-07-10
DAL189 Delta Air Lines 12 2026-07-24
DAL88 - 11 2026-07-14
DAL26 Delta Air Lines 11 2026-07-21
DAL158 Delta Air Lines 11 2026-07-18
DAL763 - 9 2026-07-13
DAL327 - 9 2026-07-14
DAL159 - 8 2026-07-18
DAL291 - 6 2026-06-22
DAL290 - 5 2026-06-22
DAL12 - 4 2026-06-24
DAL11 Delta Air Lines 4 2026-06-23
DAL173 - 3 2026-07-20
DAL172 Delta Air Lines 3 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL27 ATL → ICN Jul 26, 03:55 UTCJul 26, 19:15 UTC15h 21m
2026-07-25 DAL188 ICN → ATL Jul 25, 07:50 UTCJul 25, 21:20 UTC13h 30m
2026-07-25 DAL188 ICN → ATL Jul 25, 07:45 UTCJul 25, 21:24 UTC13h 39m
2026-07-24 DAL189 ATL → ICN Jul 24, 13:55 UTCJul 25, 05:00 UTC15h 5m
2026-07-22 DAL201 JNB → ATL Jul 22, 20:20 UTCJul 23, 12:10 UTC15h 50m
2026-07-22 DAL200 ATL → JNB Jul 22, 02:55 UTCJul 22, 03:45 UTC50m
2026-07-22 DAL200 ATL → JNB Jul 22, 02:53 UTCJul 22, 17:41 UTC14h 48m
2026-07-21 DAL26 ICN → ATL Jul 21, 10:20 UTCJul 21, 23:55 UTC13h 35m
2026-07-20 DAL173 SLC → ICN Jul 20, 19:00 UTCJul 21, 07:25 UTC12h 24m
2026-07-19 DAL172 MNL → JFK Jul 19, 10:50 UTCJul 19, 21:55 UTC11h 5m
2026-07-18 DAL159 - Jul 18, 17:35 UTCJul 19, 00:35 UTC7h 0m
2026-07-18 DAL159 DTW → ICN Jul 18, 17:33 UTCJul 19, 07:34 UTC14h 1m
2026-07-18 DAL158 ICN → DTW Jul 18, 01:34 UTCJul 18, 14:30 UTC12h 56m
2026-07-17 DAL27 ATL → ICN Jul 17, 04:29 UTCJul 17, 18:34 UTC14h 5m
2026-07-16 DAL188 ICN → ATL Jul 16, 07:40 UTCJul 16, 21:35 UTC13h 55m
2026-07-15 DAL189 ATL → ICN Jul 15, 14:00 UTCJul 16, 04:27 UTC14h 27m
2026-07-15 DAL189 ATL → ICN Jul 15, 14:00 UTCJul 16, 04:15 UTC14h 15m
2026-07-14 DAL327 LAX → ATL Jul 14, 18:15 UTCJul 14, 22:15 UTC4h 0m
2026-07-14 DAL88 HKG → LAX Jul 14, 02:27 UTCJul 14, 15:40 UTC13h 13m
2026-07-14 DAL88 - Jul 14, 02:30 UTCJul 14, 06:25 UTC3h 55m
2026-07-13 DAL89 - Jul 13, 07:30 UTCJul 13, 20:15 UTC12h 45m
2026-07-13 DAL89 LAX → HKG Jul 13, 07:29 UTCJul 13, 21:10 UTC13h 41m
2026-07-13 DAL763 ATL → LAX Jul 13, 00:10 UTCJul 13, 04:05 UTC3h 55m
2026-07-12 DAL188 - Jul 12, 07:45 UTCJul 12, 09:35 UTC1h 50m
2026-07-12 DAL188 ICN → ATL Jul 12, 07:42 UTCJul 12, 21:04 UTC13h 22m
2026-07-11 DAL189 ATL → ICN Jul 11, 14:00 UTCJul 12, 04:10 UTC14h 10m
2026-07-10 DAL211 - Jul 10, 18:20 UTCJul 10, 18:45 UTC25m
2026-07-10 DAL211 CPT → ATL Jul 10, 18:18 UTCJul 11, 09:15 UTC14h 57m
2026-07-10 DAL210 - Jul 10, 01:15 UTCJul 10, 02:25 UTC1h 10m
2026-07-10 DAL210 ATL → CPT Jul 10, 01:11 UTCJul 10, 15:28 UTC14h 17m
2026-07-09 DAL188 ICN → ATL Jul 9, 07:40 UTCJul 9, 21:00 UTC13h 20m
2026-07-09 DAL188 ICN → ATL Jul 9, 07:40 UTCJul 9, 21:04 UTC13h 24m
2026-07-08 DAL189 ATL → ICN Jul 8, 14:05 UTCJul 9, 04:55 UTC14h 50m
2026-07-07 DAL26 ICN → ATL Jul 7, 10:25 UTCJul 7, 23:40 UTC13h 15m
2026-07-07 DAL26 ICN → ATL Jul 7, 10:23 UTCJul 7, 23:38 UTC13h 15m
2026-07-06 DAL173 MXP → JFK Jul 6, 18:20 UTCJul 7, 06:00 UTC11h 40m
2026-07-06 DAL173 MXP → JFK Jul 6, 18:18 UTCJul 7, 06:02 UTC11h 44m
2026-07-05 DAL172 - Jul 5, 10:30 UTCJul 5, 12:15 UTC1h 45m
2026-07-05 DAL172 ICN → SLC Jul 5, 10:27 UTCJul 5, 21:05 UTC10h 38m
2026-07-04 DAL159 - Jul 4, 16:55 UTCJul 5, 06:20 UTC13h 25m
2026-07-04 DAL158 ICN → DTW Jul 4, 01:22 UTCJul 4, 13:53 UTC12h 31m
2026-07-04 DAL158 ICN → DTW Jul 4, 01:25 UTCJul 4, 13:45 UTC12h 20m
2026-07-04 DAL158 ICN → DTW Jul 4, 01:22 UTCJul 4, 13:44 UTC12h 22m
2026-07-03 DAL27 ATL → ICN Jul 3, 03:55 UTCJul 3, 19:10 UTC15h 15m
2026-07-02 DAL327 LAX → ATL Jul 2, 18:20 UTCJul 2, 21:55 UTC3h 35m
2026-07-02 DAL88 ATL → CDG Jul 2, 02:35 UTCJul 2, 15:05 UTC12h 30m
2026-07-02 DAL88 ATL → CDG Jul 2, 01:40 UTCJul 2, 02:00 UTC20m
2026-07-01 DAL89 CDG → ATL Jul 1, 06:25 UTCJul 1, 07:30 UTC1h 5m
2026-07-01 DAL89 CDG → ATL Jul 1, 06:24 UTCJul 1, 20:17 UTC13h 53m
2026-06-30 DAL763 - Jun 30, 23:40 UTCJul 1, 03:40 UTC4h 0m

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 N525DN page for operator, model, and routing details .

Mode-S A69BD9 frequently asked

What is Mode-S code A69BD9?
A69BD9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N525DN.
Where is Mode-S A69BD9 registered?
Mode-S code A69BD9 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 A69BD9 broadcasting right now?
Yes. Mode-S A69BD9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A69BD9, octal 51515731, decimal 10,918,873.
What flights does A69BD9 operate?
Mode-S A69BD9 has broadcast 20 distinct callsigns, including DAL188, DAL200, DAL89, DAL27, DAL211.