Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A797B4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N589DT · AIRBUS A-321neo · operated by DELTA AIR LINES INC

Hex
A797B4
Octal
51713664
Decimal
10,983,348
Country
US
Tail
N589DT
Type
A21N
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
417
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S A797B4.

Country allocation

The ICAO 24-bit address A797B4 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
DAL649 Delta Air Lines 10 2026-06-23
DAL697 - 7 2026-07-11
DAL621 Delta Air Lines 7 2026-07-25
DAL620 Delta Air Lines 7 2026-07-25
DAL1070 - 7 2026-07-19
DAL820 Delta Air Lines 6 2026-06-04
DAL705 Delta Air Lines 6 2026-07-23
DAL659 - 6 2026-07-17
DAL647 - 6 2026-06-23
DAL458 - 6 2026-07-07
DAL333 - 6 2026-07-07
DAL2794 - 6 2026-07-09
DAL2049 - 6 2026-04-13
DAL2038 Delta Air Lines 6 2026-05-27
DAL1659 Delta Air Lines 6 2026-05-27
DAL781 Delta Air Lines 5 2026-05-06
DAL745 Delta Air Lines 5 2026-07-22
DAL733 - 5 2026-07-06
DAL685 Delta Air Lines 5 2026-07-26
DAL499 Delta Air Lines 5 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2033 SLC → EWR Jul 26, 16:50 UTCJul 26, 20:45 UTC3h 55m
2026-07-26 DAL1117 BOS → MSP Jul 26, 13:33 UTCJul 26, 15:01 UTC1h 28m
2026-07-26 DAL1117 BOS → MSP Jul 26, 13:35 UTCJul 26, 15:00 UTC1h 25m
2026-07-26 DAL685 BNA → BOS Jul 26, 01:30 UTCJul 26, 06:35 UTC5h 6m
2026-07-25 DAL620 CUN → JFK Jul 25, 18:05 UTCJul 25, 21:20 UTC3h 15m
2026-07-25 DAL621 JFK → CUN Jul 25, 13:14 UTCJul 25, 16:44 UTC3h 30m
2026-07-25 DAL621 JFK → CUN Jul 25, 13:15 UTCJul 25, 16:45 UTC3h 30m
2026-07-25 DAL548 LAX → JFK Jul 25, 05:50 UTCJul 25, 10:20 UTC4h 30m
2026-07-25 DAL548 LAX → JFK Jul 25, 05:49 UTCJul 25, 10:20 UTC4h 31m
2026-07-24 DAL798 CVG → SLC Jul 24, 21:55 UTCJul 25, 02:30 UTC4h 35m
2026-07-24 DAL367 SAN → DTW Jul 24, 15:10 UTCJul 24, 20:00 UTC4h 50m
2026-07-24 DAL685 BNA → BOS Jul 24, 01:40 UTCJul 24, 07:10 UTC5h 30m
2026-07-23 DAL620 CUN → JFK Jul 23, 19:50 UTCJul 23, 23:00 UTC3h 10m
2026-07-23 DAL621 JFK → CUN Jul 23, 14:40 UTCJul 23, 18:00 UTC3h 20m
2026-07-23 DAL705 MCO → SEA Jul 23, 06:17 UTCJul 23, 10:03 UTC3h 46m
2026-07-23 DAL705 MCO → SEA Jul 23, 06:20 UTCJul 23, 10:05 UTC3h 45m
2026-07-22 DAL745 SLC → BOS Jul 22, 23:00 UTCJul 23, 03:25 UTC4h 25m
2026-07-22 DAL745 SLC → BOS Jul 22, 20:35 UTCJul 22, 21:25 UTC50m
2026-07-22 DAL745 SLC → BOS Jul 22, 17:15 UTCJul 22, 20:30 UTC3h 15m
2026-07-22 DAL1977 ATL → ANU Jul 22, 11:10 UTCJul 22, 14:55 UTC3h 45m
2026-07-21 DAL358 SEA → TPA Jul 21, 19:45 UTCJul 22, 00:30 UTC4h 45m
2026-07-21 DAL1090 BOS → MSY Jul 21, 11:45 UTCJul 21, 16:55 UTC5h 10m
2026-07-21 DAL2077 SNA → SLC Jul 21, 06:30 UTCJul 21, 10:25 UTC3h 55m
2026-07-21 DAL2117 JFK → AUS Jul 21, 01:40 UTCJul 21, 05:05 UTC3h 25m
2026-07-20 DAL2003 SLC → SFO Jul 20, 21:30 UTCJul 20, 23:40 UTC2h 10m
2026-07-20 DAL2027 - Jul 20, 17:05 UTCJul 20, 20:00 UTC2h 55m
2026-07-20 DAL2160 ATL → DTW Jul 20, 14:00 UTCJul 20, 15:25 UTC1h 25m
2026-07-20 DAL2045 - Jul 20, 00:05 UTCJul 20, 01:25 UTC1h 20m
2026-07-19 DAL1070 PHX → DTW Jul 19, 18:00 UTCJul 19, 21:30 UTC3h 30m
2026-07-19 DAL1070 DTW → PHX Jul 19, 12:55 UTCJul 19, 16:15 UTC3h 20m
2026-07-18 DAL1294 BNA → BOS Jul 18, 21:50 UTCJul 19, 00:15 UTC2h 25m
2026-07-18 DAL1294 BNA → BOS Jul 18, 18:00 UTCJul 18, 20:30 UTC2h 30m
2026-07-18 DAL2160 ATL → DTW Jul 18, 12:35 UTCJul 18, 14:10 UTC1h 35m
2026-07-17 DAL2053 - Jul 17, 23:14 UTCJul 18, 00:55 UTC1h 40m
2026-07-17 DAL2053 DTW → ATL Jul 17, 23:13 UTCJul 18, 00:51 UTC1h 38m
2026-07-17 DAL470 LAS → DTW Jul 17, 17:40 UTCJul 17, 21:25 UTC3h 45m
2026-07-17 DAL659 ATL → LAS Jul 17, 12:19 UTCJul 17, 15:49 UTC3h 30m
2026-07-17 DAL659 ATL → LAS Jul 17, 12:18 UTCJul 17, 15:46 UTC3h 28m
2026-07-16 DAL2053 - Jul 16, 22:35 UTCJul 17, 00:14 UTC1h 40m
2026-07-16 DAL470 - Jul 16, 17:25 UTCJul 16, 21:00 UTC3h 35m
2026-07-16 DAL659 ATL → LAS Jul 16, 11:54 UTCJul 16, 15:19 UTC3h 25m
2026-07-15 DAL2053 - Jul 15, 22:30 UTCJul 15, 23:55 UTC1h 25m
2026-07-15 DAL470 LAS → DTW Jul 15, 17:20 UTCJul 15, 21:00 UTC3h 40m
2026-07-15 DAL659 ATL → LAS Jul 15, 11:40 UTCJul 15, 15:10 UTC3h 30m
2026-07-15 DAL2045 - Jul 15, 01:00 UTCJul 15, 02:25 UTC1h 25m
2026-07-14 DAL1070 PHX → DTW Jul 14, 18:00 UTCJul 14, 21:30 UTC3h 30m
2026-07-14 DAL1070 - Jul 14, 12:50 UTCJul 14, 16:10 UTC3h 20m
2026-07-14 DAL1019 BOS → DTW Jul 14, 09:40 UTCJul 14, 11:05 UTC1h 25m
2026-07-14 DAL1187 - Jul 14, 02:25 UTCJul 14, 04:05 UTC1h 40m
2026-07-13 DAL2244 SLC → DTW Jul 13, 20:05 UTCJul 13, 23:15 UTC3h 10m

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 N589DT page for operator, model, and routing details .

Mode-S A797B4 frequently asked

What is Mode-S code A797B4?
A797B4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N589DT.
Where is Mode-S A797B4 registered?
Mode-S code A797B4 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 A797B4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A797B4, octal 51713664, decimal 10,983,348.
What flights does A797B4 operate?
Mode-S A797B4 has broadcast 20 distinct callsigns, including DAL649, DAL697, DAL621, DAL620, DAL1070.