Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A6B47C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N531DN · AIRBUS A-350-900 · operated by DELTA AIR LINES INC

Hex
A6B47C
Octal
51532174
Decimal
10,925,180
Country
US
Tail
N531DN
Type
A359
No current signal · last broadcast 11h ago
Flights observed
194
Distinct callsigns
20
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S A6B47C.

Country allocation

The ICAO 24-bit address A6B47C 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
DAL189 - 21 2026-06-18
DAL188 - 21 2026-06-19
DAL159 - 14 2026-07-12
DAL158 - 12 2026-07-12
DAL27 - 11 2026-07-11
DAL201 - 11 2026-06-28
DAL200 - 11 2026-06-28
DAL26 - 9 2026-06-27
DAL88 - 7 2026-07-08
DAL281 Delta Air Lines 7 2026-05-31
DAL172 - 7 2026-07-13
DAL89 - 5 2026-07-07
DAL173 Delta Air Lines 5 2026-06-26
DAL147 Delta Air Lines 4 2026-04-20
DAL146 Delta Air Lines 4 2026-04-21
DAL389 Delta Air Lines 3 2026-05-29
DAL388 Delta Air Lines 3 2026-06-01
DAL327 - 3 2026-07-10
DAL280 Delta Air Lines 3 2026-05-30
DAL9971 Delta Air Lines 2 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL172 ICN → SLC Jul 13, 10:30 UTCJul 13, 21:50 UTC11h 20m
2026-07-12 DAL159 - Jul 12, 17:10 UTCJul 13, 08:10 UTC15h 0m
2026-07-12 DAL158 - Jul 12, 01:45 UTCJul 12, 03:35 UTC1h 50m
2026-07-12 DAL158 ICN → DTW Jul 12, 01:45 UTCJul 12, 14:22 UTC12h 37m
2026-07-12 DAL158 ICN → DTW Jul 12, 01:45 UTCJul 12, 14:28 UTC12h 43m
2026-07-11 DAL27 ATL → ICN Jul 11, 04:01 UTCJul 11, 18:17 UTC14h 16m
2026-07-11 DAL27 ATL → ICN Jul 11, 04:05 UTCJul 11, 18:10 UTC14h 5m
2026-07-10 DAL327 LAX → ATL Jul 10, 17:10 UTCJul 10, 22:05 UTC4h 56m
2026-07-10 DAL327 LAX → ATL Jul 10, 17:07 UTCJul 10, 22:11 UTC5h 4m
2026-07-10 DAL12 MEL → LAX Jul 10, 00:43 UTCJul 10, 14:50 UTC14h 7m
2026-07-10 DAL12 - Jul 10, 00:45 UTCJul 10, 01:00 UTC15m
2026-07-09 DAL11 - Jul 9, 06:55 UTCJul 9, 22:05 UTC15h 10m
2026-07-09 DAL11 LAX → MEL Jul 9, 06:52 UTCJul 9, 21:50 UTC14h 58m
2026-07-08 DAL88 - Jul 8, 01:40 UTCJul 8, 05:30 UTC3h 50m
2026-07-08 DAL88 HKG → LAX Jul 8, 01:38 UTCJul 8, 14:23 UTC12h 45m
2026-07-07 DAL89 - Jul 7, 06:30 UTCJul 7, 07:35 UTC1h 5m
2026-07-07 DAL89 LAX → HKG Jul 7, 06:26 UTCJul 7, 20:30 UTC14h 4m
2026-07-05 DAL40 SYD → LAX Jul 5, 23:55 UTCJul 6, 13:00 UTC13h 5m
2026-07-05 DAL41 LAX → SYD Jul 5, 06:00 UTCJul 5, 20:40 UTC14h 40m
2026-07-04 DAL291 - Jul 4, 14:30 UTCJul 5, 01:20 UTC10h 50m
2026-07-04 DAL290 - Jul 4, 01:10 UTCJul 4, 06:05 UTC4h 55m
2026-07-04 DAL290 LAX → CDG Jul 4, 01:09 UTCJul 4, 10:56 UTC9h 47m
2026-07-03 DAL88 ATL → CDG Jul 3, 03:55 UTCJul 3, 15:25 UTC11h 30m
2026-07-03 DAL88 ATL → CDG Jul 3, 03:05 UTCJul 3, 03:20 UTC15m
2026-07-02 DAL89 CDG → ATL Jul 2, 08:22 UTCJul 2, 22:07 UTC13h 45m
2026-07-02 DAL89 CDG → ATL Jul 2, 08:25 UTCJul 2, 09:30 UTC1h 5m
2026-07-02 DAL763 ATL → LAX Jul 2, 02:00 UTCJul 2, 06:15 UTC4h 15m
2026-06-28 DAL201 - Jun 28, 20:09 UTCJun 28, 20:34 UTC25m
2026-06-28 DAL201 JNB → ATL Jun 28, 20:06 UTCJun 29, 12:13 UTC16h 7m
2026-06-28 DAL200 - Jun 28, 02:49 UTCJun 28, 03:40 UTC50m
2026-06-28 DAL200 ATL → JNB Jun 28, 02:47 UTCJun 28, 17:38 UTC14h 51m
2026-06-27 DAL26 ICN → ATL Jun 27, 10:05 UTCJun 27, 23:00 UTC12h 55m
2026-06-26 DAL173 MXP → JFK Jun 26, 17:35 UTCJun 27, 05:39 UTC12h 5m
2026-06-25 DAL172 SEA → SLC Jun 25, 22:10 UTCJun 25, 23:34 UTC1h 25m
2026-06-25 DAL172 SEA → SLC Jun 25, 22:07 UTCJun 25, 23:31 UTC1h 24m
2026-06-25 DAL172 ICN → SEA Jun 25, 11:04 UTCJun 25, 20:19 UTC9h 15m
2026-06-24 DAL173 MXP → JFK Jun 24, 17:45 UTCJun 24, 23:00 UTC5h 15m
2026-06-24 DAL173 MXP → JFK Jun 24, 17:41 UTCJun 25, 05:56 UTC12h 15m
2026-06-23 DAL172 ICN → SLC Jun 23, 10:35 UTCJun 23, 20:49 UTC10h 15m
2026-06-22 DAL159 - Jun 22, 17:10 UTCJun 23, 06:55 UTC13h 45m
2026-06-22 DAL158 - Jun 22, 01:29 UTCJun 22, 13:49 UTC12h 20m
2026-06-21 DAL27 ATL → ICN Jun 21, 04:14 UTCJun 21, 20:24 UTC16h 10m
2026-06-20 DAL299 - Jun 20, 12:59 UTCJun 20, 14:59 UTC2h 0m
2026-06-20 DAL299 FCO → ATL Jun 20, 12:58 UTCJun 20, 23:00 UTC10h 2m
2026-06-20 DAL298 ATL → FCO Jun 20, 01:39 UTCJun 20, 10:20 UTC8h 40m
2026-06-20 DAL298 ATL → FCO Jun 20, 01:38 UTCJun 20, 10:13 UTC8h 35m
2026-06-19 DAL188 ICN → ATL Jun 19, 07:45 UTCJun 19, 20:44 UTC13h 0m
2026-06-19 DAL188 ICN → ATL Jun 19, 07:41 UTCJun 19, 20:42 UTC13h 1m
2026-06-18 DAL189 ATL → ICN Jun 18, 14:01 UTCJun 19, 04:29 UTC14h 29m
2026-06-16 DAL83 - Jun 16, 09:04 UTCJun 16, 17:55 UTC8h 50m

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 N531DN page for operator, model, and routing details .

Mode-S A6B47C frequently asked

What is Mode-S code A6B47C?
A6B47C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N531DN.
Where is Mode-S A6B47C registered?
Mode-S code A6B47C 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 A6B47C broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6B47C, octal 51532174, decimal 10,925,180.
What flights does A6B47C operate?
Mode-S A6B47C has broadcast 20 distinct callsigns, including DAL189, DAL188, DAL159, DAL158, DAL27.