Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A6C70F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N536DN · AIRBUS A-321neo · operated by DELTA AIR LINES INC

Hex
A6C70F
Octal
51543417
Decimal
10,929,935
Country
US
Tail
N536DN
Type
A21N
No current signal · last broadcast Jul 26, 19:10 UTC
Flights observed
403
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:10 UTC

Last known position

Most recent position reported by Mode-S A6C70F.

Country allocation

The ICAO 24-bit address A6C70F 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
DAL1966 Delta Air Lines 13 2026-05-29
DAL506 - 10 2026-06-19
DAL328 Delta Air Lines 7 2026-05-26
DAL311 Delta Air Lines 7 2026-07-25
DAL2914 Delta Air Lines 7 2026-07-24
DAL2706 - 7 2026-07-10
DAL1209 Delta Air Lines 7 2026-07-03
DAL800 - 6 2026-06-30
DAL795 Delta Air Lines 6 2026-04-16
DAL685 Delta Air Lines 6 2026-05-05
DAL485 Delta Air Lines 6 2026-07-25
DAL452 - 6 2026-07-11
DAL384 Delta Air Lines 6 2026-07-24
DAL1845 - 6 2026-07-11
DAL1780 Delta Air Lines 6 2026-07-26
DAL474 Delta Air Lines 5 2026-06-12
DAL419 - 5 2026-06-18
DAL2921 - 5 2026-06-25
DAL1655 Delta Air Lines 5 2026-07-21
DAL1045 - 5 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1780 BOS → SJU Jul 26, 18:55 UTCJul 26, 19:10 UTC15m
2026-07-26 DAL1780 BOS → SJU Jul 26, 16:20 UTCJul 26, 16:45 UTC25m
2026-07-26 DAL1780 BOS → SJU Jul 26, 13:15 UTCJul 26, 13:50 UTC35m
2026-07-26 DAL473 BOS → LAX Jul 26, 06:40 UTCJul 26, 11:15 UTC4h 35m
2026-07-26 DAL359 PSP → ATL Jul 26, 03:55 UTCJul 26, 04:50 UTC55m
2026-07-25 DAL359 PSP → ATL Jul 25, 23:35 UTCJul 25, 23:45 UTC10m
2026-07-25 DAL359 PSP → ATL Jul 25, 23:33 UTCJul 26, 04:51 UTC5h 18m
2026-07-25 DAL351 JFK → LAX Jul 25, 15:35 UTCJul 25, 21:10 UTC5h 35m
2026-07-25 DAL485 KOA → SEA Jul 25, 12:35 UTCJul 25, 13:35 UTC1h 0m
2026-07-25 DAL485 KOA → SEA Jul 25, 08:20 UTCJul 25, 08:40 UTC20m
2026-07-25 DAL311 SFO → JFK Jul 25, 04:50 UTCJul 25, 05:05 UTC15m
2026-07-24 DAL311 SFO → JFK Jul 24, 23:55 UTCJul 25, 00:20 UTC25m
2026-07-24 DAL311 SFO → JFK Jul 24, 23:54 UTCJul 25, 04:59 UTC5h 5m
2026-07-24 DAL2914 MCI → ATL Jul 24, 19:50 UTCJul 24, 22:05 UTC2h 15m
2026-07-24 DAL2914 MCI → ATL Jul 24, 19:50 UTCJul 24, 22:05 UTC2h 15m
2026-07-24 DAL384 JFK → SLC Jul 24, 12:33 UTCJul 24, 18:20 UTC5h 47m
2026-07-24 DAL384 JFK → SLC Jul 24, 12:35 UTCJul 24, 18:30 UTC5h 55m
2026-07-24 DAL571 ATL → LGA Jul 24, 05:55 UTCJul 24, 10:50 UTC4h 55m
2026-07-23 DAL571 ATL → LGA Jul 23, 22:00 UTCJul 24, 03:20 UTC5h 20m
2026-07-23 DAL459 JFK → SAN Jul 23, 15:00 UTCJul 23, 19:45 UTC4h 45m
2026-07-23 DAL459 JFK → SAN Jul 23, 14:59 UTCJul 23, 19:39 UTC4h 40m
2026-07-23 DAL324 LAX → JFK Jul 23, 00:43 UTCJul 23, 06:23 UTC5h 40m
2026-07-23 DAL324 LAX → JFK Jul 23, 00:45 UTCJul 23, 06:25 UTC5h 40m
2026-07-22 DAL1780 - Jul 22, 20:55 UTCJul 22, 21:55 UTC1h 0m
2026-07-22 DAL1780 - Jul 22, 18:15 UTCJul 22, 18:35 UTC20m
2026-07-22 DAL1780 - Jul 22, 13:10 UTCJul 22, 16:45 UTC3h 35m
2026-07-21 DAL860 LGA → ATL Jul 21, 23:10 UTCJul 22, 04:10 UTC5h 0m
2026-07-21 DAL860 LGA → ATL Jul 21, 14:55 UTCJul 21, 20:40 UTC5h 45m
2026-07-21 DAL1655 DEN → LGA Jul 21, 05:50 UTCJul 21, 10:45 UTC4h 55m
2026-07-20 DAL1655 DEN → LGA Jul 20, 21:55 UTCJul 21, 03:55 UTC6h 0m
2026-07-20 DAL400 - Jul 20, 14:35 UTCJul 20, 19:40 UTC5h 5m
2026-07-19 DAL860 BOS → SFO Jul 19, 15:25 UTCJul 19, 21:05 UTC5h 40m
2026-07-19 DAL1655 - Jul 19, 05:25 UTCJul 19, 10:20 UTC4h 55m
2026-07-19 DAL1655 BOS → SFO Jul 19, 05:22 UTCJul 19, 10:30 UTC5h 8m
2026-07-18 DAL1655 BOS → SFO Jul 18, 21:45 UTCJul 19, 03:30 UTC5h 45m
2026-07-18 DAL400 SFO → BOS Jul 18, 14:20 UTCJul 18, 19:55 UTC5h 35m
2026-07-18 DAL2919 BOS → SFO Jul 18, 01:34 UTCJul 18, 07:15 UTC5h 41m
2026-07-17 DAL438 SEA → BOS Jul 17, 18:44 UTCJul 17, 23:25 UTC4h 40m
2026-07-17 DAL699 JFK → SEA Jul 17, 11:35 UTCJul 17, 16:59 UTC5h 25m
2026-07-17 DAL699 JFK → SEA Jul 17, 11:33 UTCJul 17, 16:55 UTC5h 22m
2026-07-17 DAL9898 EDI → JFK Jul 17, 00:35 UTCJul 17, 02:59 UTC2h 25m
2026-07-15 DAL1955 - Jul 15, 12:30 UTCJul 15, 15:00 UTC2h 30m
2026-07-14 DAL671 SLC → JFK Jul 14, 20:40 UTCJul 15, 01:00 UTC4h 19m
2026-07-14 DAL671 SLC → JFK Jul 14, 20:41 UTCJul 15, 00:52 UTC4h 11m
2026-07-14 DAL2031 MCO → SLC Jul 14, 15:00 UTCJul 14, 18:55 UTC3h 55m
2026-07-14 DAL2555 DTW → MCO Jul 14, 11:25 UTCJul 14, 13:25 UTC2h 0m
2026-07-14 DAL2555 DTW → MCO Jul 14, 11:22 UTCJul 14, 13:28 UTC2h 6m
2026-07-14 DAL2255 SLC → DTW Jul 14, 01:20 UTCJul 14, 04:25 UTC3h 5m
2026-07-13 DAL526 ATL → SLC Jul 13, 20:35 UTCJul 13, 23:50 UTC3h 15m
2026-07-13 DAL897 SLC → ATL Jul 13, 14:55 UTCJul 13, 18:30 UTC3h 35m

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 N536DN page for operator, model, and routing details .

Mode-S A6C70F frequently asked

What is Mode-S code A6C70F?
A6C70F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N536DN.
Where is Mode-S A6C70F registered?
Mode-S code A6C70F 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 A6C70F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6C70F, octal 51543417, decimal 10,929,935.
What flights does A6C70F operate?
Mode-S A6C70F has broadcast 20 distinct callsigns, including DAL1966, DAL506, DAL328, DAL311, DAL2914.