Apparatus

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sensors Mode-S transponder

AD5679

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N959DZ · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AD5679
Octal
53253171
Decimal
11,359,865
Country
US
Tail
N959DZ
Type
B739
No current signal · last broadcast 14d ago
Flights observed
491
Distinct callsigns
20
Country
US
Last broadcast
14d ago

Last known position

Most recent position reported by Mode-S AD5679.

Country allocation

The ICAO 24-bit address AD5679 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
DAL2867 - 13 2026-06-27
DAL2542 - 12 2026-06-16
DAL2052 Delta Air Lines 11 2026-06-19
DAL2026 - 10 2026-06-20
DAL3134 Delta Air Lines 9 2026-05-28
DAL3067 Delta Air Lines 9 2026-06-23
DAL3054 Delta Air Lines 9 2026-06-05
DAL2545 Delta Air Lines 9 2026-06-04
DAL2071 Delta Air Lines 9 2026-06-11
DAL1393 Delta Air Lines 9 2026-05-27
DAL880 Delta Air Lines 8 2026-06-05
DAL3069 Delta Air Lines 8 2026-06-17
DAL3056 - 8 2026-06-25
DAL3021 - 8 2026-06-23
DAL2600 Delta Air Lines 8 2026-06-06
DAL1424 Delta Air Lines 8 2026-04-16
DAL2999 Delta Air Lines 7 2026-05-06
DAL1481 - 7 2026-06-18
DAL3195 - 6 2026-06-22
DAL2925 Delta Air Lines 6 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-29 DAL9961 VQQ → ATL Jun 29, 03:14 UTCJun 29, 03:34 UTC20m
2026-06-29 DAL9961 VQQ → ATL Jun 29, 03:15 UTCJun 29, 03:35 UTC20m
2026-06-28 DAL871 SLC → SEA Jun 28, 23:34 UTCJun 29, 01:14 UTC1h 40m
2026-06-28 DAL2651 MSP → SLC Jun 28, 17:55 UTCJun 28, 20:29 UTC2h 35m
2026-06-28 DAL2757 - Jun 28, 11:29 UTCJun 28, 12:55 UTC1h 25m
2026-06-27 DAL3120 ATL → IND Jun 27, 22:15 UTCJun 27, 23:29 UTC1h 15m
2026-06-27 DAL2867 - Jun 27, 19:34 UTCJun 27, 20:14 UTC40m
2026-06-27 DAL2867 BNA → ATL Jun 27, 19:31 UTCJun 27, 20:10 UTC39m
2026-06-27 DAL2867 ATL → BNA Jun 27, 17:29 UTCJun 27, 18:15 UTC45m
2026-06-27 DAL1674 - Jun 27, 13:44 UTCJun 27, 14:25 UTC40m
2026-06-27 DAL2494 - Jun 27, 00:39 UTCJun 27, 01:19 UTC40m
2026-06-26 DAL1565 - Jun 26, 10:44 UTCJun 26, 11:45 UTC1h 0m
2026-06-26 DAL1565 LIT → ATL Jun 26, 10:38 UTCJun 26, 11:41 UTC1h 3m
2026-06-26 DAL2083 - Jun 26, 03:24 UTCJun 26, 04:24 UTC1h 0m
2026-06-25 DAL3056 - Jun 25, 23:19 UTCJun 26, 00:15 UTC55m
2026-06-25 DAL3056 DAB → ATL Jun 25, 23:15 UTCJun 26, 00:13 UTC58m
2026-06-25 DAL3056 - Jun 25, 20:54 UTCJun 25, 21:59 UTC1h 5m
2026-06-25 DAL1345 - Jun 25, 17:54 UTCJun 25, 19:24 UTC1h 30m
2026-06-25 DAL1345 - Jun 25, 15:04 UTCJun 25, 16:20 UTC1h 15m
2026-06-25 DAL1674 - Jun 25, 12:44 UTCJun 25, 13:24 UTC40m
2026-06-25 DAL1674 ECP → ATL Jun 25, 12:44 UTCJun 25, 13:24 UTC40m
2026-06-24 DAL2494 - Jun 24, 23:20 UTCJun 24, 23:59 UTC40m
2026-06-24 DAL3095 - Jun 24, 21:24 UTCJun 24, 21:54 UTC30m
2026-06-24 DAL3095 - Jun 24, 19:20 UTCJun 24, 19:55 UTC35m
2026-06-24 DAL82 ATL → CDG Jun 24, 16:50 UTCJun 24, 17:45 UTC55m
2026-06-24 DAL82 ATL → CDG Jun 24, 16:48 UTCJun 24, 17:38 UTC50m
2026-06-24 DAL2937 ATL → MEM Jun 24, 14:27 UTCJun 24, 15:20 UTC53m
2026-06-24 DAL2478 BNA → BOS Jun 24, 11:50 UTCJun 24, 12:44 UTC55m
2026-06-24 DAL2478 BNA → BOS Jun 24, 11:47 UTCJun 24, 12:40 UTC53m
2026-06-24 DAL3244 RSW → BOS Jun 24, 02:40 UTCJun 24, 03:35 UTC55m
2026-06-23 DAL3126 IND → ATL Jun 23, 22:55 UTCJun 23, 23:59 UTC1h 5m
2026-06-23 DAL3126 IND → ATL Jun 23, 20:10 UTCJun 23, 21:14 UTC1h 5m
2026-06-23 DAL2867 - Jun 23, 17:50 UTCJun 23, 18:25 UTC35m
2026-06-23 DAL2867 - Jun 23, 15:34 UTCJun 23, 16:20 UTC45m
2026-06-23 DAL3067 PNS → ATL Jun 23, 13:05 UTCJun 23, 13:50 UTC45m
2026-06-23 DAL3021 ATL → PNS Jun 23, 00:24 UTCJun 23, 01:11 UTC47m
2026-06-23 DAL3021 ATL → PNS Jun 23, 00:24 UTCJun 23, 01:15 UTC50m
2026-06-22 DAL3195 - Jun 22, 20:55 UTCJun 22, 21:54 UTC1h 0m
2026-06-22 DAL3195 SDF → ATL Jun 22, 20:50 UTCJun 22, 22:00 UTC1h 10m
2026-06-22 DAL3195 ATL → SDF Jun 22, 18:24 UTCJun 22, 19:19 UTC55m
2026-06-22 DAL3035 - Jun 22, 15:45 UTCJun 22, 16:40 UTC55m
2026-06-22 DAL3035 DAB → ATL Jun 22, 15:40 UTCJun 22, 16:36 UTC56m
2026-06-22 DAL3035 - Jun 22, 13:14 UTCJun 22, 14:10 UTC55m
2026-06-22 DAL1547 - Jun 22, 10:30 UTCJun 22, 11:35 UTC1h 5m
2026-06-22 DAL2072 ATL → MSY Jun 22, 02:19 UTCJun 22, 03:24 UTC1h 5m
2026-06-21 DAL3056 - Jun 21, 23:14 UTCJun 22, 00:10 UTC55m
2026-06-21 DAL3056 - Jun 21, 20:50 UTCJun 21, 21:54 UTC1h 5m
2026-06-21 DAL1345 - Jun 21, 18:00 UTCJun 21, 19:14 UTC1h 15m
2026-06-21 DAL1345 - Jun 21, 15:05 UTCJun 21, 16:19 UTC1h 15m
2026-06-21 DAL1674 ECP → ATL Jun 21, 12:44 UTCJun 21, 13:29 UTC45m

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 N959DZ page for operator, model, and routing details .

Mode-S AD5679 frequently asked

What is Mode-S code AD5679?
AD5679 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N959DZ.
Where is Mode-S AD5679 registered?
Mode-S code AD5679 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 AD5679 broadcasting right now?
No active broadcast right now. Last signal was 14d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD5679, octal 53253171, decimal 11,359,865.
What flights does AD5679 operate?
Mode-S AD5679 has broadcast 20 distinct callsigns, including DAL2867, DAL2542, DAL2052, DAL2026, DAL3134.