Apparatus

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sensors Mode-S transponder

AD1142

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N941DZ · operated by DELTA AIR LINES INC

Hex
AD1142
Octal
53210502
Decimal
11,342,146
Country
US
Tail
N941DZ
Type
B739
Broadcasting now · callsign DAL408 · 30,750 ft
Flights observed
491
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Current position

AD1142 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD1142 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
DAL532 Delta Air Lines 9 2026-04-17
DAL2739 Delta Air Lines 7 2026-05-31
DAL2437 - 6 2026-06-26
DAL2042 - 6 2026-07-02
DAL1468 - 6 2026-06-22
DAL891 - 5 2026-07-20
DAL615 Delta Air Lines 5 2026-07-20
DAL614 Delta Air Lines 5 2026-07-20
DAL3169 - 5 2026-06-30
DAL3164 Delta Air Lines 5 2026-06-12
DAL2323 Delta Air Lines 5 2026-04-14
DAL2300 Delta Air Lines 5 2026-06-10
DAL1615 - 5 2026-07-18
DAL874 Delta Air Lines 4 2026-04-30
DAL3069 Delta Air Lines 4 2026-07-25
DAL2946 Delta Air Lines 4 2026-07-18
DAL2860 Delta Air Lines 4 2026-06-14
DAL2531 Delta Air Lines 4 2026-06-09
DAL2499 Delta Air Lines 4 2026-05-10
DAL2418 Delta Air Lines 4 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL3157 ATL → MSY Jul 26, 20:35 UTCJul 26, 21:35 UTC1h 0m
2026-07-26 DAL3157 ATL → MSY Jul 26, 17:55 UTCJul 26, 18:55 UTC1h 0m
2026-07-26 DAL886 CVG → SEA Jul 26, 13:20 UTCJul 26, 16:30 UTC3h 10m
2026-07-26 DAL1251 ATL → TUS Jul 26, 00:35 UTCJul 26, 03:53 UTC3h 18m
2026-07-26 DAL1251 ATL → TUS Jul 26, 00:35 UTCJul 26, 04:00 UTC3h 25m
2026-07-25 DAL1477 ORD → ATL Jul 25, 20:50 UTCJul 25, 22:10 UTC1h 20m
2026-07-25 DAL1477 ORD → ATL Jul 25, 17:20 UTCJul 25, 18:50 UTC1h 30m
2026-07-25 DAL3069 BNA → ATL Jul 25, 15:00 UTCJul 25, 15:40 UTC40m
2026-07-25 DAL3069 BNA → ATL Jul 25, 12:45 UTCJul 25, 13:30 UTC45m
2026-07-25 DAL3028 CAE → ATL Jul 25, 10:10 UTCJul 25, 10:40 UTC30m
2026-07-25 DAL2281 SFO → SEA Jul 25, 03:40 UTCJul 25, 04:10 UTC30m
2026-07-25 DAL2199 MSP → PHL Jul 25, 00:50 UTCJul 25, 01:50 UTC1h 0m
2026-07-24 DAL558 BOS → SLC Jul 24, 18:40 UTCJul 24, 22:15 UTC3h 35m
2026-07-24 DAL2530 LGA → BOS Jul 24, 14:20 UTCJul 24, 16:35 UTC2h 15m
2026-07-24 DAL2672 ATL → DTW Jul 24, 03:00 UTCJul 24, 05:20 UTC2h 20m
2026-07-23 DAL871 SFO → ATL Jul 23, 23:55 UTCJul 24, 01:30 UTC1h 35m
2026-07-23 DAL849 ATL → BOS Jul 23, 21:05 UTCJul 23, 22:25 UTC1h 20m
2026-07-23 DAL849 ATL → BOS Jul 23, 21:04 UTCJul 23, 22:22 UTC1h 18m
2026-07-23 DAL902 BOS → DEN Jul 23, 18:00 UTCJul 23, 19:40 UTC1h 40m
2026-07-23 DAL2628 MSP → SLC Jul 23, 13:20 UTCJul 23, 15:35 UTC2h 15m
2026-07-22 DAL630 - Jul 22, 17:30 UTCJul 22, 20:10 UTC2h 40m
2026-07-22 DAL2261 MSP → LAS Jul 22, 12:16 UTCJul 22, 15:04 UTC2h 48m
2026-07-22 DAL2261 MSP → LAS Jul 22, 12:20 UTCJul 22, 15:10 UTC2h 50m
2026-07-22 DAL2180 JFK → TPA Jul 22, 01:55 UTCJul 22, 05:05 UTC3h 10m
2026-07-22 DAL2180 JFK → TPA Jul 22, 01:53 UTCJul 22, 04:58 UTC3h 5m
2026-07-21 DAL2114 MSY → ATL Jul 21, 21:10 UTCJul 22, 00:20 UTC3h 10m
2026-07-21 DAL2924 SLC → OAK Jul 21, 17:25 UTCJul 21, 19:25 UTC2h 0m
2026-07-21 DAL2628 MSP → SLC Jul 21, 13:25 UTCJul 21, 15:40 UTC2h 15m
2026-07-21 DAL2789 JFK → LAX Jul 21, 08:30 UTCJul 21, 11:35 UTC3h 5m
2026-07-21 DAL2986 DTW → BOS Jul 21, 06:00 UTCJul 21, 06:50 UTC50m
2026-07-20 DAL614 CUN → LAX Jul 20, 23:15 UTCJul 21, 03:35 UTC4h 19m
2026-07-20 DAL614 CUN → LAX Jul 20, 23:15 UTCJul 21, 03:36 UTC4h 21m
2026-07-20 DAL615 LAX → CUN Jul 20, 17:25 UTCJul 20, 21:40 UTC4h 15m
2026-07-20 DAL615 LAX → CUN Jul 20, 17:21 UTCJul 20, 21:42 UTC4h 21m
2026-07-20 DAL891 BNA → LAX Jul 20, 12:10 UTCJul 20, 15:50 UTC3h 40m
2026-07-20 DAL790 ATL → BNA Jul 20, 01:25 UTCJul 20, 02:05 UTC40m
2026-07-19 DAL1898 ATL → ATL Jul 19, 14:10 UTCJul 19, 23:10 UTC9h 0m
2026-07-19 DAL3001 - Jul 19, 11:55 UTCJul 19, 12:35 UTC40m
2026-07-19 DAL1144 MSP → GEG Jul 19, 01:55 UTCJul 19, 03:35 UTC1h 40m
2026-07-18 DAL2946 MSP → DFW Jul 18, 22:15 UTCJul 18, 23:50 UTC1h 35m
2026-07-18 DAL2946 MSP → DFW Jul 18, 18:30 UTCJul 18, 20:05 UTC1h 35m
2026-07-18 DAL1615 GEG → MSP Jul 18, 14:15 UTCJul 18, 16:40 UTC2h 25m
2026-07-18 DAL1615 GEG → MSP Jul 18, 14:14 UTCJul 18, 16:35 UTC2h 21m
2026-07-18 DAL2418 SFO → DTW Jul 18, 03:10 UTCJul 18, 05:55 UTC2h 45m
2026-07-18 DAL2418 SFO → DTW Jul 18, 03:10 UTCJul 18, 05:48 UTC2h 38m
2026-07-17 DAL402 LGA → ATL Jul 17, 22:20 UTCJul 18, 01:20 UTC3h 0m
2026-07-17 DAL402 LGA → ATL Jul 17, 22:17 UTCJul 18, 01:18 UTC3h 1m
2026-07-17 DAL402 LGA → ATL Jul 17, 17:55 UTCJul 17, 21:10 UTC3h 15m
2026-07-17 DAL2916 SLC → MSP Jul 17, 14:35 UTCJul 17, 16:40 UTC2h 5m
2026-07-17 DAL1590 LAS → SLC Jul 17, 05:57 UTCJul 17, 06:51 UTC54m

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 N941DZ page for operator, model, and routing details .

Mode-S AD1142 frequently asked

What is Mode-S code AD1142?
AD1142 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N941DZ.
Where is Mode-S AD1142 registered?
Mode-S code AD1142 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 AD1142 broadcasting right now?
Yes. Mode-S AD1142 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD1142, octal 53210502, decimal 11,342,146.
What flights does AD1142 operate?
Mode-S AD1142 has broadcast 20 distinct callsigns, including DAL532, DAL2739, DAL2437, DAL2042, DAL1468.