Apparatus

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sensors Mode-S transponder

A79046

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N587DT · AIRBUS A-321neo · operated by DELTA AIR LINES INC

Hex
A79046
Octal
51710106
Decimal
10,981,446
Country
US
Tail
N587DT
Type
A21N
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
417
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A79046.

Country allocation

The ICAO 24-bit address A79046 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
DAL1296 - 10 2026-07-13
DAL657 Delta Air Lines 9 2026-07-07
DAL860 Delta Air Lines 8 2026-07-20
DAL745 - 8 2026-07-04
DAL709 Delta Air Lines 8 2026-06-30
DAL377 Delta Air Lines 8 2026-05-24
DAL820 - 7 2026-07-12
DAL786 Delta Air Lines 7 2026-05-29
DAL2021 - 7 2026-07-13
DAL649 Delta Air Lines 6 2026-07-06
DAL620 - 6 2026-06-30
DAL499 Delta Air Lines 6 2026-07-08
DAL445 - 6 2026-07-11
DAL2049 Delta Air Lines 6 2026-07-23
DAL1422 Delta Air Lines 6 2026-04-13
DAL910 Delta Air Lines 5 2026-06-05
DAL791 Delta Air Lines 5 2026-05-26
DAL647 - 5 2026-07-06
DAL621 - 5 2026-06-30
DAL538 - 5 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1685 ATL → LGA Jul 26, 20:20 UTCJul 26, 21:30 UTC1h 10m
2026-07-23 DAL2049 JFK → ATL Jul 23, 15:25 UTCJul 23, 17:30 UTC2h 5m
2026-07-23 DAL2049 JFK → ATL Jul 23, 11:35 UTCJul 23, 13:50 UTC2h 15m
2026-07-22 DAL415 ATL → BOS Jul 22, 18:55 UTCJul 22, 23:25 UTC4h 30m
2026-07-21 DAL332 LAX → JFK Jul 21, 19:05 UTCJul 22, 00:50 UTC5h 45m
2026-07-20 DAL860 LGA → ATL Jul 20, 23:25 UTCJul 21, 04:20 UTC4h 54m
2026-07-20 DAL860 LGA → ATL Jul 20, 15:40 UTCJul 20, 21:35 UTC5h 55m
2026-07-20 DAL1655 DEN → LGA Jul 20, 05:30 UTCJul 20, 10:35 UTC5h 5m
2026-07-19 DAL1655 DEN → LGA Jul 19, 21:35 UTCJul 20, 03:15 UTC5h 40m
2026-07-19 DAL400 - Jul 19, 14:35 UTCJul 19, 19:40 UTC5h 5m
2026-07-18 DAL756 MSP → SFO Jul 18, 19:45 UTCJul 18, 23:20 UTC3h 35m
2026-07-18 DAL1675 DEN → MSP Jul 18, 15:30 UTCJul 18, 17:05 UTC1h 35m
2026-07-18 DAL1675 MSP → DEN Jul 18, 12:10 UTCJul 18, 13:40 UTC1h 30m
2026-07-18 DAL756 SFO → MSP Jul 18, 01:45 UTCJul 18, 04:55 UTC3h 11m
2026-07-17 DAL756 MSP → SFO Jul 17, 20:25 UTCJul 17, 23:50 UTC3h 25m
2026-07-17 DAL1103 BOS → MSP Jul 17, 16:08 UTCJul 17, 18:50 UTC2h 42m
2026-07-17 DAL1103 BOS → MSP Jul 17, 16:10 UTCJul 17, 18:50 UTC2h 40m
2026-07-17 DAL2649 MSP → BOS Jul 17, 12:19 UTCJul 17, 14:35 UTC2h 15m
2026-07-16 DAL2198 LAX → MSP Jul 16, 22:45 UTCJul 17, 01:49 UTC3h 5m
2026-07-16 DAL895 ATL → LAX Jul 16, 16:55 UTCJul 16, 20:55 UTC4h 0m
2026-07-16 DAL895 ATL → LAX Jul 16, 16:54 UTCJul 16, 20:47 UTC3h 53m
2026-07-16 DAL899 - Jul 16, 05:55 UTCJul 16, 10:00 UTC4h 5m
2026-07-15 DAL872 - Jul 15, 23:25 UTCJul 16, 03:55 UTC4h 30m
2026-07-15 DAL2024 SLC → MCO Jul 15, 17:35 UTCJul 15, 21:40 UTC4h 5m
2026-07-15 DAL2025 MCO → SLC Jul 15, 12:15 UTCJul 15, 16:15 UTC4h 0m
2026-07-15 DAL2069 SLC → MCO Jul 15, 06:55 UTCJul 15, 10:45 UTC3h 50m
2026-07-14 DAL2070 - Jul 14, 22:35 UTCJul 15, 01:55 UTC3h 19m
2026-07-14 DAL2070 - Jul 14, 17:20 UTCJul 14, 21:00 UTC3h 40m
2026-07-14 DAL580 - Jul 14, 11:20 UTCJul 14, 15:05 UTC3h 45m
2026-07-14 DAL1409 SLC → RDU Jul 14, 00:45 UTCJul 14, 04:35 UTC3h 50m
2026-07-13 DAL1296 SAN → SLC Jul 13, 21:55 UTCJul 13, 23:25 UTC1h 30m
2026-07-13 DAL1296 SAN → SLC Jul 13, 21:55 UTCJul 13, 23:23 UTC1h 28m
2026-07-13 DAL1296 SLC → SAN Jul 13, 18:55 UTCJul 13, 20:25 UTC1h 30m
2026-07-13 DAL2021 - Jul 13, 11:20 UTCJul 13, 15:45 UTC4h 25m
2026-07-13 DAL2040 - Jul 13, 05:15 UTCJul 13, 09:20 UTC4h 5m
2026-07-12 DAL820 DCA → SLC Jul 12, 22:20 UTCJul 13, 02:15 UTC3h 55m
2026-07-12 DAL820 - Jul 12, 16:50 UTCJul 12, 20:45 UTC3h 55m
2026-07-12 DAL1117 - Jul 12, 13:35 UTCJul 12, 15:01 UTC1h 25m
2026-07-12 DAL1202 - Jul 12, 04:55 UTCJul 12, 06:30 UTC1h 35m
2026-07-11 DAL445 BNH → SLC Jul 11, 20:50 UTCJul 12, 01:30 UTC4h 40m
2026-07-11 DAL445 BOS → SLC Jul 11, 20:50 UTCJul 12, 01:25 UTC4h 35m
2026-07-11 DAL2706 TPA → BOS Jul 11, 15:45 UTCJul 11, 18:30 UTC2h 45m
2026-07-11 DAL2706 BOS → TPA Jul 11, 11:15 UTCJul 11, 13:55 UTC2h 40m
2026-07-10 DAL860 - Jul 10, 22:25 UTCJul 11, 03:25 UTC5h 0m
2026-07-10 DAL860 BOS → SFO Jul 10, 22:23 UTCJul 11, 03:21 UTC4h 58m
2026-07-10 DAL860 BOS → SFO Jul 10, 15:05 UTCJul 10, 21:00 UTC5h 55m
2026-07-09 DAL977 - Jul 9, 20:35 UTCJul 10, 01:25 UTC4h 50m
2026-07-09 DAL977 SFO → BOS Jul 9, 20:32 UTCJul 10, 01:24 UTC4h 52m
2026-07-09 DAL977 BOS → SFO Jul 9, 11:40 UTCJul 9, 17:50 UTC6h 10m
2026-07-09 DAL696 SLC → BOS Jul 9, 06:11 UTCJul 9, 10:06 UTC3h 55m

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 N587DT page for operator, model, and routing details .

Mode-S A79046 frequently asked

What is Mode-S code A79046?
A79046 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N587DT.
Where is Mode-S A79046 registered?
Mode-S code A79046 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 A79046 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A79046, octal 51710106, decimal 10,981,446.
What flights does A79046 operate?
Mode-S A79046 has broadcast 20 distinct callsigns, including DAL1296, DAL657, DAL860, DAL745, DAL709.