Apparatus

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sensors Mode-S transponder

AD18B0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N943DZ · operated by DELTA AIR LINES INC

Hex
AD18B0
Octal
53214260
Decimal
11,344,048
Country
US
Tail
N943DZ
Type
B739
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
693
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S AD18B0.

Country allocation

The ICAO 24-bit address AD18B0 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
DAL2547 Delta Air Lines 27 2026-07-22
DAL1363 - 21 2026-07-16
DAL1381 Delta Air Lines 20 2026-07-26
DAL2827 - 19 2026-07-14
DAL1550 - 19 2026-07-15
DAL3107 Delta Air Lines 18 2026-07-23
DAL2174 Delta Air Lines 16 2026-07-22
DAL1470 - 16 2026-06-19
DAL2911 Delta Air Lines 15 2026-07-22
DAL2778 Delta Air Lines 14 2026-06-03
DAL3092 Delta Air Lines 13 2026-05-05
DAL2471 Delta Air Lines 13 2026-07-26
DAL2425 - 13 2026-07-16
DAL1702 - 13 2026-07-16
DAL1212 - 13 2026-06-16
DAL1067 - 13 2026-07-24
DAL3198 Delta Air Lines 12 2026-05-24
DAL3115 Delta Air Lines 12 2026-05-05
DAL3110 - 11 2026-07-17
DAL3103 - 11 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1381 BOS → MCO Jul 26, 21:20 UTCJul 26, 22:00 UTC40m
2026-07-26 DAL1381 BOS → MCO Jul 26, 18:50 UTCJul 26, 19:30 UTC40m
2026-07-26 DAL2471 LEX → ATL Jul 26, 15:55 UTCJul 26, 17:30 UTC1h 35m
2026-07-26 DAL2471 LEX → ATL Jul 26, 12:40 UTCJul 26, 14:20 UTC1h 40m
2026-07-26 DAL2124 ATL → BOS Jul 26, 10:25 UTCJul 26, 11:05 UTC40m
2026-07-25 DAL3179 GSO → ATL Jul 25, 21:55 UTCJul 25, 22:40 UTC45m
2026-07-25 DAL2747 BOS → DTW Jul 25, 18:30 UTCJul 25, 20:30 UTC2h 0m
2026-07-25 DAL2747 BOS → DTW Jul 25, 15:15 UTCJul 25, 17:00 UTC1h 45m
2026-07-25 DAL1504 BOS → JAX Jul 25, 12:15 UTCJul 25, 13:25 UTC1h 10m
2026-07-25 DAL1504 BOS → JAX Jul 25, 12:10 UTCJul 25, 13:22 UTC1h 12m
2026-07-25 DAL1351 SJC → ATL Jul 25, 05:10 UTCJul 25, 06:15 UTC1h 5m
2026-07-25 DAL3059 PNS → ATL Jul 25, 01:50 UTCJul 25, 02:40 UTC50m
2026-07-25 DAL3059 PNS → ATL Jul 25, 01:49 UTCJul 25, 02:41 UTC52m
2026-07-25 DAL3059 PNS → ATL Jul 25, 00:05 UTCJul 25, 00:50 UTC45m
2026-07-24 DAL1067 SEA → AUS Jul 24, 21:50 UTCJul 24, 22:30 UTC40m
2026-07-24 DAL1067 SEA → AUS Jul 24, 21:48 UTCJul 24, 22:31 UTC43m
2026-07-24 DAL1067 - Jul 24, 17:40 UTCJul 24, 18:00 UTC20m
2026-07-24 DAL1067 SEA → AUS Jul 24, 17:37 UTCJul 24, 18:18 UTC41m
2026-07-24 DAL3091 ATL → CHS Jul 24, 15:40 UTCJul 24, 16:25 UTC45m
2026-07-24 DAL3091 ATL → CHS Jul 24, 13:10 UTCJul 24, 13:55 UTC45m
2026-07-24 DAL3154 DAB → ATL Jul 24, 10:15 UTCJul 24, 11:10 UTC55m
2026-07-24 DAL2810 STL → MSP Jul 24, 03:10 UTCJul 24, 04:00 UTC50m
2026-07-24 DAL3179 GSO → ATL Jul 24, 00:30 UTCJul 24, 01:15 UTC45m
2026-07-23 DAL3179 GSO → ATL Jul 23, 21:50 UTCJul 23, 22:30 UTC40m
2026-07-23 DAL3107 ATL → CHS Jul 23, 17:40 UTCJul 23, 18:20 UTC40m
2026-07-23 DAL3107 ATL → CHS Jul 23, 15:15 UTCJul 23, 16:10 UTC55m
2026-07-23 DAL1901 DTW → PVR Jul 23, 12:10 UTCJul 23, 13:20 UTC1h 10m
2026-07-23 DAL1901 DTW → PVR Jul 23, 12:10 UTCJul 23, 13:13 UTC1h 3m
2026-07-23 DAL1482 CHS → LGA Jul 23, 01:20 UTCJul 23, 02:25 UTC1h 5m
2026-07-22 DAL2174 ATL → MSY Jul 22, 22:45 UTCJul 22, 23:30 UTC45m
2026-07-22 DAL2174 ATL → MSY Jul 22, 22:42 UTCJul 22, 23:26 UTC44m
2026-07-22 DAL2174 ATL → MSY Jul 22, 20:30 UTCJul 22, 21:15 UTC45m
2026-07-22 DAL2547 GRR → ATL Jul 22, 17:00 UTCJul 22, 18:35 UTC1h 35m
2026-07-22 DAL2547 GRR → ATL Jul 22, 16:57 UTCJul 22, 18:30 UTC1h 33m
2026-07-22 DAL2547 GRR → ATL Jul 22, 14:00 UTCJul 22, 15:35 UTC1h 35m
2026-07-22 DAL1204 LGA → RSW Jul 22, 11:10 UTCJul 22, 12:20 UTC1h 10m
2026-07-22 DAL2911 BOS → MIA Jul 22, 02:55 UTCJul 22, 04:35 UTC1h 40m
2026-07-21 DAL1126 PDX → LAX Jul 21, 23:10 UTCJul 22, 00:20 UTC1h 10m
2026-07-21 DAL1126 PDX → LAX Jul 21, 20:45 UTCJul 21, 21:55 UTC1h 10m
2026-07-21 DAL3107 ATL → CHS Jul 21, 17:20 UTCJul 21, 18:05 UTC45m
2026-07-21 DAL3107 ATL → CHS Jul 21, 14:50 UTCJul 21, 15:30 UTC40m
2026-07-21 DAL1901 DTW → PVR Jul 21, 12:10 UTCJul 21, 13:10 UTC1h 0m
2026-07-21 DAL1482 - Jul 21, 01:45 UTCJul 21, 02:20 UTC35m
2026-07-21 DAL1482 - Jul 21, 01:15 UTCJul 21, 01:40 UTC25m
2026-07-20 DAL2174 ATL → MSY Jul 20, 22:45 UTCJul 20, 23:30 UTC45m
2026-07-20 DAL2174 ATL → MSY Jul 20, 22:40 UTCJul 20, 23:26 UTC46m
2026-07-20 DAL2174 ATL → MSY Jul 20, 20:20 UTCJul 20, 21:05 UTC45m
2026-07-20 DAL2547 - Jul 20, 17:05 UTCJul 20, 18:35 UTC1h 30m
2026-07-20 DAL2547 ATL → GRR Jul 20, 13:55 UTCJul 20, 15:30 UTC1h 35m
2026-07-20 DAL1126 PDX → LAX Jul 20, 01:30 UTCJul 20, 02:35 UTC1h 5m

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 N943DZ page for operator, model, and routing details .

Mode-S AD18B0 frequently asked

What is Mode-S code AD18B0?
AD18B0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N943DZ.
Where is Mode-S AD18B0 registered?
Mode-S code AD18B0 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 AD18B0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD18B0, octal 53214260, decimal 11,344,048.
What flights does AD18B0 operate?
Mode-S AD18B0 has broadcast 20 distinct callsigns, including DAL2547, DAL1363, DAL1381, DAL2827, DAL1550.