Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A6A347

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N527DN · AIRBUS A-350-900 · operated by DELTA AIR LINES INC

Hex
A6A347
Octal
51521507
Decimal
10,920,775
Country
US
Tail
N527DN
Type
A359
No current signal · last broadcast 1h ago
Flights observed
204
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A6A347.

Country allocation

The ICAO 24-bit address A6A347 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 - 15 2026-06-29
DAL159 - 15 2026-07-09
DAL26 - 13 2026-07-12
DAL188 - 13 2026-06-30
DAL41 Delta Air Lines 12 2026-05-29
DAL27 - 12 2026-07-08
DAL201 - 12 2026-07-13
DAL200 - 12 2026-07-13
DAL158 - 10 2026-07-09
DAL40 Delta Air Lines 9 2026-05-29
DAL173 - 6 2026-07-11
DAL172 - 6 2026-07-10
DAL12 - 6 2026-06-17
DAL763 Delta Air Lines 5 2026-06-12
DAL160 Delta Air Lines 5 2026-06-05
DAL11 Delta Air Lines 5 2026-06-16
DAL327 - 4 2026-06-17
DAL166 Delta Air Lines 4 2026-06-04
DAL1502 Delta Air Lines 4 2026-05-03
DAL7 Delta Air Lines 3 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL201 - Jul 13, 21:00 UTCJul 13, 21:25 UTC25m
2026-07-13 DAL201 JNB → ATL Jul 13, 20:58 UTCJul 14, 12:37 UTC15h 39m
2026-07-13 DAL200 ATL → JNB Jul 13, 03:45 UTCJul 13, 18:25 UTC14h 40m
2026-07-12 DAL26 ICN → ATL Jul 12, 10:10 UTCJul 12, 23:40 UTC13h 30m
2026-07-11 DAL173 SLC → ICN Jul 11, 18:34 UTCJul 12, 06:10 UTC11h 36m
2026-07-11 DAL173 - Jul 11, 18:35 UTCJul 11, 23:45 UTC5h 10m
2026-07-10 DAL172 - Jul 10, 10:30 UTCJul 10, 12:25 UTC1h 55m
2026-07-10 DAL172 ICN → SLC Jul 10, 10:28 UTCJul 10, 22:04 UTC11h 36m
2026-07-09 DAL159 - Jul 9, 17:35 UTCJul 10, 07:15 UTC13h 40m
2026-07-09 DAL158 ICN → DTW Jul 9, 01:25 UTCJul 9, 13:50 UTC12h 25m
2026-07-09 DAL158 ICN → DTW Jul 9, 01:20 UTCJul 9, 13:47 UTC12h 27m
2026-07-08 DAL27 ATL → ICN Jul 8, 04:15 UTCJul 8, 18:35 UTC14h 20m
2026-07-06 DAL201 - Jul 6, 20:25 UTCJul 7, 12:25 UTC16h 0m
2026-07-06 DAL200 - Jul 6, 03:10 UTCJul 6, 18:10 UTC15h 0m
2026-07-06 DAL200 ATL → JNB Jul 6, 03:10 UTCJul 6, 18:02 UTC14h 52m
2026-07-05 DAL26 - Jul 5, 10:05 UTCJul 5, 23:45 UTC13h 40m
2026-07-05 DAL26 ICN → ATL Jul 5, 10:00 UTCJul 5, 23:46 UTC13h 46m
2026-07-04 DAL173 MXP → JFK Jul 4, 18:10 UTCJul 5, 06:25 UTC12h 15m
2026-07-04 DAL173 MXP → JFK Jul 4, 18:08 UTCJul 5, 06:27 UTC12h 19m
2026-07-03 DAL172 ICN → SLC Jul 3, 10:35 UTCJul 3, 21:20 UTC10h 45m
2026-07-02 DAL159 DTW → ICN Jul 2, 16:51 UTCJul 3, 06:41 UTC13h 50m
2026-07-02 DAL159 - Jul 2, 16:55 UTCJul 3, 06:25 UTC13h 30m
2026-07-02 DAL158 ICN → DTW Jul 2, 01:40 UTCJul 2, 13:45 UTC12h 5m
2026-07-01 DAL27 ATL → ICN Jul 1, 03:50 UTCJul 1, 17:55 UTC14h 5m
2026-07-01 DAL27 ATL → ICN Jul 1, 03:50 UTCJul 1, 18:02 UTC14h 12m
2026-06-30 DAL188 - Jun 30, 07:50 UTCJun 30, 09:40 UTC1h 50m
2026-06-30 DAL188 ICN → ATL Jun 30, 07:50 UTCJun 30, 20:45 UTC12h 55m
2026-06-29 DAL189 ATL → ICN Jun 29, 13:57 UTCJun 30, 04:23 UTC14h 26m
2026-06-29 DAL189 - Jun 29, 13:59 UTCJun 29, 21:39 UTC7h 40m
2026-06-28 DAL211 - Jun 28, 18:44 UTCJun 28, 19:04 UTC20m
2026-06-28 DAL211 CPT → ATL Jun 28, 18:45 UTCJun 29, 10:25 UTC15h 40m
2026-06-28 DAL210 ATL → CPT Jun 28, 01:19 UTCJun 28, 16:14 UTC14h 55m
2026-06-26 DAL201 - Jun 26, 20:10 UTCJun 26, 20:34 UTC25m
2026-06-26 DAL201 JNB → ATL Jun 26, 20:07 UTCJun 27, 12:19 UTC16h 12m
2026-06-26 DAL200 ATL → JNB Jun 26, 02:31 UTCJun 26, 17:07 UTC14h 36m
2026-06-26 DAL200 - Jun 26, 02:34 UTCJun 26, 17:09 UTC14h 35m
2026-06-25 DAL26 - Jun 25, 10:15 UTCJun 25, 19:44 UTC9h 30m
2026-06-25 DAL26 ICN → ATL Jun 25, 10:13 UTCJun 25, 23:29 UTC13h 16m
2026-06-24 DAL159 - Jun 24, 17:25 UTCJun 25, 00:09 UTC6h 45m
2026-06-24 DAL159 DTW → ICN Jun 24, 17:24 UTCJun 25, 07:14 UTC13h 50m
2026-06-24 DAL158 - Jun 24, 01:30 UTCJun 24, 01:44 UTC15m
2026-06-24 DAL158 ICN → DTW Jun 24, 01:25 UTCJun 24, 13:42 UTC12h 17m
2026-06-23 DAL27 ATL → ICN Jun 23, 04:00 UTCJun 23, 18:10 UTC14h 10m
2026-06-22 DAL26 ICN → ATL Jun 22, 10:05 UTCJun 22, 23:14 UTC13h 10m
2026-06-21 DAL173 MXP → JFK Jun 21, 17:39 UTCJun 22, 05:29 UTC11h 50m
2026-06-21 DAL173 MXP → JFK Jun 21, 17:37 UTCJun 22, 05:40 UTC12h 3m
2026-06-20 DAL172 - Jun 20, 10:34 UTCJun 20, 12:24 UTC1h 50m
2026-06-20 DAL172 ICN → SLC Jun 20, 10:31 UTCJun 20, 21:18 UTC10h 47m
2026-06-20 DAL172 ICN → SLC Jun 20, 10:31 UTCJun 20, 21:21 UTC10h 50m
2026-06-19 DAL159 - Jun 19, 17:14 UTCJun 20, 06:29 UTC13h 15m

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 N527DN page for operator, model, and routing details .

Mode-S A6A347 frequently asked

What is Mode-S code A6A347?
A6A347 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N527DN.
Where is Mode-S A6A347 registered?
Mode-S code A6A347 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 A6A347 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6A347, octal 51521507, decimal 10,920,775.
What flights does A6A347 operate?
Mode-S A6A347 has broadcast 20 distinct callsigns, including DAL189, DAL159, DAL26, DAL188, DAL41.