Apparatus

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sensors Mode-S transponder

AD278C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N947DZ · operated by DELTA AIR LINES INC

Hex
AD278C
Octal
53223614
Decimal
11,347,852
Country
US
Tail
N947DZ
Type
B739
No current signal · last broadcast 12h ago
Flights observed
573
Distinct callsigns
20
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S AD278C.

Country allocation

The ICAO 24-bit address AD278C 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
DAL1470 - 26 2026-07-13
DAL1381 - 26 2026-07-12
DAL2827 - 21 2026-07-09
DAL2471 - 21 2026-07-03
DAL1130 - 18 2026-07-13
DAL3198 Delta Air Lines 15 2026-05-28
DAL3107 Delta Air Lines 15 2026-06-19
DAL2547 - 15 2026-07-02
DAL1660 Delta Air Lines 15 2026-05-28
DAL1212 - 15 2026-07-13
DAL1204 - 15 2026-07-11
DAL3196 Delta Air Lines 12 2026-06-05
DAL1750 - 12 2026-07-05
DAL1488 - 12 2026-07-13
DAL1363 - 12 2026-07-12
DAL527 Delta Air Lines 11 2026-06-06
DAL3110 - 11 2026-07-05
DAL2911 - 10 2026-07-11
DAL3103 - 9 2026-07-09
DAL2026 Delta Air Lines 9 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL1470 - Jul 13, 22:40 UTCJul 14, 00:30 UTC1h 50m
2026-07-13 DAL1488 - Jul 13, 19:25 UTCJul 13, 20:25 UTC1h 0m
2026-07-13 DAL1488 ATL → RDU Jul 13, 15:40 UTCJul 13, 16:35 UTC55m
2026-07-13 DAL1212 - Jul 13, 12:10 UTCJul 13, 13:45 UTC1h 35m
2026-07-13 DAL1130 - Jul 13, 01:55 UTCJul 13, 03:30 UTC1h 35m
2026-07-12 DAL1381 - Jul 12, 22:50 UTCJul 12, 23:35 UTC45m
2026-07-12 DAL1381 - Jul 12, 19:45 UTCJul 12, 20:35 UTC50m
2026-07-12 DAL1363 - Jul 12, 16:01 UTCJul 12, 17:15 UTC1h 15m
2026-07-12 DAL1363 ATL → PIT Jul 12, 13:15 UTCJul 12, 14:25 UTC1h 10m
2026-07-12 DAL1702 SAV → ATL Jul 12, 11:01 UTCJul 12, 11:40 UTC40m
2026-07-12 DAL2425 ATL → SAV Jul 12, 06:15 UTCJul 12, 07:01 UTC45m
2026-07-12 DAL2425 ATL → SAV Jul 12, 06:15 UTCJul 12, 06:52 UTC37m
2026-07-11 DAL3095 - Jul 11, 21:35 UTCJul 11, 22:05 UTC30m
2026-07-11 DAL3095 - Jul 11, 19:25 UTCJul 11, 20:00 UTC35m
2026-07-11 DAL851 - Jul 11, 16:55 UTCJul 11, 17:50 UTC55m
2026-07-11 DAL851 MEM → ATL Jul 11, 16:53 UTCJul 11, 17:45 UTC52m
2026-07-11 DAL2937 - Jul 11, 14:25 UTCJul 11, 15:15 UTC50m
2026-07-11 DAL1204 - Jul 11, 10:50 UTCJul 11, 12:20 UTC1h 30m
2026-07-11 DAL2911 - Jul 11, 05:01 UTCJul 11, 06:55 UTC1h 55m
2026-07-11 DAL3179 - Jul 11, 02:35 UTCJul 11, 03:20 UTC45m
2026-07-10 DAL3179 - Jul 10, 22:50 UTCJul 10, 23:45 UTC55m
2026-07-10 DAL1488 - Jul 10, 18:00 UTCJul 10, 19:00 UTC1h 0m
2026-07-10 DAL1488 RDU → ATL Jul 10, 17:58 UTCJul 10, 18:56 UTC58m
2026-07-10 DAL1488 ATL → RDU Jul 10, 15:25 UTCJul 10, 16:25 UTC1h 0m
2026-07-10 DAL1212 - Jul 10, 12:15 UTCJul 10, 13:55 UTC1h 40m
2026-07-10 DAL1470 - Jul 10, 01:00 UTCJul 10, 02:35 UTC1h 35m
2026-07-09 DAL2827 - Jul 9, 22:15 UTCJul 9, 23:40 UTC1h 25m
2026-07-09 DAL2827 DAB → ATL Jul 9, 22:12 UTCJul 9, 23:32 UTC1h 20m
2026-07-09 DAL2827 - Jul 9, 17:00 UTCJul 9, 18:00 UTC1h 0m
2026-07-09 DAL3103 - Jul 9, 14:35 UTCJul 9, 15:20 UTC45m
2026-07-09 DAL3103 ATL → PNS Jul 9, 12:30 UTCJul 9, 13:20 UTC50m
2026-07-08 DAL1126 - Jul 8, 23:10 UTCJul 9, 00:00 UTC50m
2026-07-08 DAL1126 - Jul 8, 20:35 UTCJul 8, 21:25 UTC50m
2026-07-08 DAL1363 - Jul 8, 15:45 UTCJul 8, 17:00 UTC1h 15m
2026-07-08 DAL1363 - Jul 8, 13:20 UTCJul 8, 14:30 UTC1h 10m
2026-07-08 DAL1702 - Jul 8, 10:55 UTCJul 8, 11:35 UTC40m
2026-07-08 DAL1702 SAV → ATL Jul 8, 10:53 UTCJul 8, 11:30 UTC37m
2026-07-08 DAL2425 ATL → SAV Jul 8, 00:55 UTCJul 8, 01:35 UTC40m
2026-07-07 DAL2484 - Jul 7, 22:35 UTCJul 7, 23:15 UTC40m
2026-07-07 DAL2484 - Jul 7, 20:40 UTCJul 7, 21:10 UTC30m
2026-07-07 DAL1488 - Jul 7, 18:05 UTCJul 7, 19:00 UTC55m
2026-07-07 DAL1488 ATL → RDU Jul 7, 15:35 UTCJul 7, 16:35 UTC1h 0m
2026-07-07 DAL1212 - Jul 7, 12:10 UTCJul 7, 13:45 UTC1h 35m
2026-07-06 DAL1470 - Jul 6, 23:15 UTCJul 7, 00:55 UTC1h 40m
2026-07-06 DAL1470 ATL → MCI Jul 6, 23:14 UTCJul 7, 00:54 UTC1h 40m
2026-07-06 DAL1488 - Jul 6, 18:00 UTCJul 6, 18:55 UTC55m
2026-07-06 DAL1488 ATL → RDU Jul 6, 15:25 UTCJul 6, 16:25 UTC1h 0m
2026-07-06 DAL1212 - Jul 6, 12:15 UTCJul 6, 13:45 UTC1h 30m
2026-07-06 DAL2911 - Jul 6, 04:35 UTCJul 6, 06:05 UTC1h 30m
2026-07-06 DAL1097 - Jul 6, 02:10 UTCJul 6, 03:05 UTC55m

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 N947DZ page for operator, model, and routing details .

Mode-S AD278C frequently asked

What is Mode-S code AD278C?
AD278C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N947DZ.
Where is Mode-S AD278C registered?
Mode-S code AD278C 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 AD278C broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD278C, octal 53223614, decimal 11,347,852.
What flights does AD278C operate?
Mode-S AD278C has broadcast 20 distinct callsigns, including DAL1470, DAL1381, DAL2827, DAL2471, DAL1130.