Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AD479D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N955DZ · operated by DELTA AIR LINES INC

Hex
AD479D
Octal
53243635
Decimal
11,356,061
Country
US
Tail
N955DZ
Type
B739
No current signal · last broadcast Jun 13, 16:55 UTC
Flights observed
354
Distinct callsigns
20
Country
US
Last broadcast
Jun 13, 16:55 UTC

Last known position

Most recent position reported by Mode-S AD479D.

Country allocation

The ICAO 24-bit address AD479D 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
DAL2471 Delta Air Lines 25 2026-06-12
DAL3198 Delta Air Lines 21 2026-06-01
DAL1660 Delta Air Lines 21 2026-06-01
DAL2908 Delta Air Lines 17 2026-05-26
DAL1700 Delta Air Lines 17 2026-05-02
DAL1381 Delta Air Lines 15 2026-06-12
DAL2911 Delta Air Lines 11 2026-06-05
DAL3110 Delta Air Lines 8 2026-06-10
DAL2778 Delta Air Lines 8 2026-06-05
DAL1204 Delta Air Lines 8 2026-05-26
DAL3107 Delta Air Lines 7 2026-05-29
DAL1568 Delta Air Lines 7 2026-05-29
DAL1550 Delta Air Lines 7 2026-05-05
DAL1470 Delta Air Lines 7 2026-06-12
DAL1246 Delta Air Lines 7 2026-06-06
DAL1212 Delta Air Lines 7 2026-06-13
DAL1130 Delta Air Lines 7 2026-05-24
DAL3100 Delta Air Lines 6 2026-05-31
DAL3023 Delta Air Lines 6 2026-06-06
DAL2026 Delta Air Lines 6 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-13 DAL2747 BOS → DTW Jun 13, 15:15 UTCJun 13, 16:55 UTC1h 40m
2026-06-13 DAL1212 DCA → ATL Jun 13, 12:05 UTCJun 13, 13:35 UTC1h 30m
2026-06-13 DAL1212 DCA → ATL Jun 13, 12:01 UTCJun 13, 13:31 UTC1h 30m
2026-06-12 DAL1470 BOS → RDU Jun 12, 23:30 UTCJun 13, 01:10 UTC1h 40m
2026-06-12 DAL1381 BOS → MCO Jun 12, 21:20 UTCJun 12, 22:00 UTC40m
2026-06-12 DAL1381 BOS → MCO Jun 12, 18:55 UTCJun 12, 19:35 UTC40m
2026-06-12 DAL2471 LEX → ATL Jun 12, 15:50 UTCJun 12, 17:30 UTC1h 40m
2026-06-12 DAL2471 LEX → ATL Jun 12, 12:35 UTCJun 12, 14:15 UTC1h 40m
2026-06-12 DAL1504 BOS → JAX Jun 12, 09:45 UTCJun 12, 10:55 UTC1h 10m
2026-06-12 DAL1351 SJC → ATL Jun 12, 04:15 UTCJun 12, 05:25 UTC1h 10m
2026-06-12 DAL3059 PNS → ATL Jun 12, 00:40 UTCJun 12, 01:30 UTC50m
2026-06-11 DAL3059 PNS → ATL Jun 11, 22:25 UTCJun 11, 23:10 UTC45m
2026-06-11 DAL1067 SEA → AUS Jun 11, 20:05 UTCJun 11, 20:45 UTC40m
2026-06-11 DAL1067 SEA → AUS Jun 11, 17:55 UTCJun 11, 18:35 UTC40m
2026-06-11 DAL3091 ATL → CHS Jun 11, 15:35 UTCJun 11, 16:20 UTC45m
2026-06-11 DAL3091 ATL → CHS Jun 11, 13:10 UTCJun 11, 13:55 UTC45m
2026-06-11 DAL2124 - Jun 11, 10:25 UTCJun 11, 11:05 UTC40m
2026-06-11 DAL2124 CHS → ATL Jun 11, 10:21 UTCJun 11, 11:07 UTC46m
2026-06-10 DAL3179 GSO → ATL Jun 10, 22:10 UTCJun 10, 22:55 UTC45m
2026-06-10 DAL1750 MSP → MYR Jun 10, 19:05 UTCJun 10, 20:15 UTC1h 10m
2026-06-10 DAL1750 MSP → MYR Jun 10, 16:20 UTCJun 10, 17:30 UTC1h 10m
2026-06-10 DAL3110 MCI → ATL Jun 10, 13:20 UTCJun 10, 14:50 UTC1h 30m
2026-06-09 DAL1470 BOS → RDU Jun 9, 22:05 UTCJun 9, 23:40 UTC1h 35m
2026-06-09 DAL2547 GRR → ATL Jun 9, 17:05 UTCJun 9, 18:35 UTC1h 30m
2026-06-09 DAL2547 GRR → ATL Jun 9, 14:00 UTCJun 9, 15:30 UTC1h 30m
2026-06-09 DAL2518 CID → ATL Jun 9, 11:05 UTCJun 9, 12:40 UTC1h 35m
2026-06-09 DAL2626 ATL → CID Jun 9, 03:50 UTCJun 9, 05:25 UTC1h 35m
2026-06-09 DAL1490 ATL → BNA Jun 9, 01:05 UTCJun 9, 01:55 UTC50m
2026-06-08 DAL1490 ATL → BNA Jun 8, 22:45 UTCJun 8, 23:25 UTC40m
2026-06-08 DAL1148 SNA → SLC Jun 8, 20:10 UTCJun 8, 20:40 UTC30m
2026-06-08 DAL1148 SNA → SLC Jun 8, 18:05 UTCJun 8, 18:35 UTC30m
2026-06-08 DAL3196 XNA → DTW Jun 8, 15:20 UTCJun 8, 16:40 UTC1h 20m
2026-06-08 DAL3196 XNA → DTW Jun 8, 12:35 UTCJun 8, 13:40 UTC1h 5m
2026-06-06 DAL1246 MSP → BOS Jun 6, 21:04 UTCJun 6, 22:34 UTC1h 30m
2026-06-06 DAL1246 MSP → BOS Jun 6, 21:00 UTCJun 6, 22:33 UTC1h 33m
2026-06-06 DAL1246 MSP → BOS Jun 6, 18:09 UTCJun 6, 19:44 UTC1h 35m
2026-06-06 DAL3110 MCI → ATL Jun 6, 13:15 UTCJun 6, 14:45 UTC1h 30m
2026-06-06 DAL3023 MCO → JFK Jun 6, 01:20 UTCJun 6, 03:00 UTC1h 40m
2026-06-06 DAL3023 MCO → JFK Jun 6, 01:17 UTCJun 6, 03:02 UTC1h 45m
2026-06-05 DAL3083 VPS → ATL Jun 5, 22:55 UTCJun 5, 23:35 UTC40m
2026-06-05 DAL3083 VPS → ATL Jun 5, 20:40 UTCJun 5, 21:15 UTC35m
2026-06-05 DAL2778 MEM → ATL Jun 5, 17:55 UTCJun 5, 18:45 UTC50m
2026-06-05 DAL2778 MEM → ATL Jun 5, 15:30 UTCJun 5, 16:20 UTC50m
2026-06-05 DAL1212 DCA → ATL Jun 5, 12:20 UTCJun 5, 13:45 UTC1h 25m
2026-06-05 DAL2911 BOS → MIA Jun 5, 03:15 UTCJun 5, 04:55 UTC1h 40m
2026-06-05 DAL2911 BOS → MIA Jun 5, 03:13 UTCJun 5, 05:10 UTC1h 57m
2026-06-05 DAL1097 BOS → RSW Jun 5, 00:05 UTCJun 5, 01:00 UTC55m
2026-06-04 DAL1097 BOS → RSW Jun 4, 21:40 UTCJun 4, 22:40 UTC1h 0m
2026-06-04 DAL2471 LEX → ATL Jun 4, 17:30 UTCJun 4, 19:00 UTC1h 30m
2026-06-04 DAL2471 LEX → ATL Jun 4, 14:40 UTCJun 4, 16:15 UTC1h 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 N955DZ page for operator, model, and routing details .

Mode-S AD479D frequently asked

What is Mode-S code AD479D?
AD479D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N955DZ.
Where is Mode-S AD479D registered?
Mode-S code AD479D 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 AD479D broadcasting right now?
No active broadcast right now. Last signal was Jun 13, 16:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD479D, octal 53243635, decimal 11,356,061.
What flights does AD479D operate?
Mode-S AD479D has broadcast 20 distinct callsigns, including DAL2471, DAL3198, DAL1660, DAL2908, DAL1700.