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 Jul 26, 21:55 UTC
Flights observed
666
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:55 UTC

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
DAL1381 Delta Air Lines 28 2026-07-23
DAL1470 - 27 2026-07-15
DAL2827 - 23 2026-07-15
DAL2471 - 23 2026-07-21
DAL1750 Delta Air Lines 23 2026-07-24
DAL2547 - 20 2026-07-19
DAL1130 Delta Air Lines 20 2026-07-24
DAL3107 Delta Air Lines 19 2026-07-26
DAL1204 - 18 2026-07-19
DAL3110 Delta Air Lines 17 2026-07-24
DAL527 Delta Air Lines 15 2026-07-25
DAL3198 Delta Air Lines 15 2026-05-28
DAL1660 Delta Air Lines 15 2026-05-28
DAL1363 - 15 2026-07-23
DAL1212 - 15 2026-07-13
DAL2911 - 13 2026-07-19
DAL3196 Delta Air Lines 12 2026-06-05
DAL3103 - 12 2026-07-15
DAL1488 - 12 2026-07-13
DAL3154 Delta Air Lines 10 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1126 PDX → LAX Jul 26, 21:00 UTCJul 26, 21:55 UTC55m
2026-07-26 DAL3107 ATL → CHS Jul 26, 17:25 UTCJul 26, 18:10 UTC45m
2026-07-26 DAL3107 ATL → CHS Jul 26, 15:05 UTCJul 26, 15:55 UTC50m
2026-07-26 DAL1901 DTW → PVR Jul 26, 12:25 UTCJul 26, 13:30 UTC1h 5m
2026-07-26 DAL1901 DTW → PVR Jul 26, 12:25 UTCJul 26, 13:28 UTC1h 3m
2026-07-26 DAL1482 CHS → LGA Jul 26, 01:40 UTCJul 26, 02:45 UTC1h 5m
2026-07-25 DAL1443 ATL → EWR Jul 25, 20:55 UTCJul 25, 22:25 UTC1h 30m
2026-07-25 DAL1443 ATL → EWR Jul 25, 17:40 UTCJul 25, 19:20 UTC1h 40m
2026-07-25 DAL1699 MSP → IAH Jul 25, 15:15 UTCJul 25, 16:10 UTC55m
2026-07-25 DAL1699 MSP → IAH Jul 25, 12:45 UTCJul 25, 13:40 UTC55m
2026-07-25 DAL3154 DAB → ATL Jul 25, 10:15 UTCJul 25, 11:10 UTC55m
2026-07-25 DAL2810 STL → MSP Jul 25, 03:45 UTCJul 25, 04:40 UTC55m
2026-07-25 DAL527 SAN → BOS Jul 25, 01:15 UTCJul 25, 01:50 UTC35m
2026-07-24 DAL527 SAN → BOS Jul 24, 23:25 UTCJul 25, 00:00 UTC35m
2026-07-24 DAL1750 MSP → MYR Jul 24, 20:30 UTCJul 24, 21:00 UTC30m
2026-07-24 DAL1750 MSP → MYR Jul 24, 20:27 UTCJul 24, 21:35 UTC1h 8m
2026-07-24 DAL1750 MSP → MYR Jul 24, 16:20 UTCJul 24, 17:30 UTC1h 10m
2026-07-24 DAL3110 MCI → ATL Jul 24, 13:10 UTCJul 24, 14:40 UTC1h 30m
2026-07-24 DAL3110 MCI → ATL Jul 24, 13:06 UTCJul 24, 14:36 UTC1h 30m
2026-07-24 DAL1130 DEN → MSP Jul 24, 00:10 UTCJul 24, 01:50 UTC1h 40m
2026-07-23 DAL1381 BOS → MCO Jul 23, 21:30 UTCJul 23, 22:15 UTC45m
2026-07-23 DAL1381 BOS → MCO Jul 23, 19:05 UTCJul 23, 19:50 UTC45m
2026-07-23 DAL1363 - Jul 23, 16:20 UTCJul 23, 17:35 UTC1h 15m
2026-07-23 DAL1363 PIT → ATL Jul 23, 16:19 UTCJul 23, 17:32 UTC1h 13m
2026-07-23 DAL1363 - Jul 23, 13:40 UTCJul 23, 14:55 UTC1h 15m
2026-07-23 DAL2124 ATL → BOS Jul 23, 10:20 UTCJul 23, 11:10 UTC50m
2026-07-22 DAL3179 - Jul 22, 22:00 UTCJul 22, 22:40 UTC40m
2026-07-22 DAL1750 MSP → MYR Jul 22, 19:10 UTCJul 22, 20:30 UTC1h 20m
2026-07-22 DAL1750 MSP → MYR Jul 22, 19:09 UTCJul 22, 20:30 UTC1h 21m
2026-07-22 DAL1750 MSP → MYR Jul 22, 16:45 UTCJul 22, 17:50 UTC1h 5m
2026-07-22 DAL3110 MCI → ATL Jul 22, 13:15 UTCJul 22, 14:40 UTC1h 25m
2026-07-22 DAL3110 MCI → ATL Jul 22, 13:09 UTCJul 22, 14:39 UTC1h 30m
2026-07-21 DAL1130 DEN → MSP Jul 21, 23:55 UTCJul 22, 01:30 UTC1h 35m
2026-07-21 DAL3095 - Jul 21, 21:30 UTCJul 21, 22:00 UTC30m
2026-07-21 DAL3095 GSP → ATL Jul 21, 21:32 UTCJul 21, 22:11 UTC39m
2026-07-21 DAL3095 - Jul 21, 19:15 UTCJul 21, 19:40 UTC25m
2026-07-21 DAL2471 - Jul 21, 15:50 UTCJul 21, 17:25 UTC1h 35m
2026-07-21 DAL2471 - Jul 21, 12:45 UTCJul 21, 14:25 UTC1h 40m
2026-07-21 DAL1504 BOS → JAX Jul 21, 10:00 UTCJul 21, 11:15 UTC1h 15m
2026-07-21 DAL1504 BOS → JAX Jul 21, 09:55 UTCJul 21, 11:11 UTC1h 16m
2026-07-21 DAL1351 SJC → ATL Jul 21, 03:20 UTCJul 21, 04:30 UTC1h 10m
2026-07-21 DAL3059 - Jul 21, 00:40 UTCJul 21, 01:30 UTC50m
2026-07-20 DAL3059 ATL → PNS Jul 20, 22:40 UTCJul 20, 23:25 UTC45m
2026-07-20 DAL1067 SAV → ATL Jul 20, 20:15 UTCJul 20, 20:55 UTC40m
2026-07-20 DAL1067 SAV → ATL Jul 20, 20:13 UTCJul 20, 20:52 UTC39m
2026-07-20 DAL1067 ATL → SAV Jul 20, 18:10 UTCJul 20, 18:45 UTC35m
2026-07-20 DAL1699 MSP → IAH Jul 20, 15:50 UTCJul 20, 16:45 UTC55m
2026-07-20 DAL1699 MSP → IAH Jul 20, 12:55 UTCJul 20, 13:55 UTC1h 0m
2026-07-20 DAL3154 - Jul 20, 10:10 UTCJul 20, 11:05 UTC55m
2026-07-20 DAL3154 DAB → ATL Jul 20, 10:07 UTCJul 20, 11:05 UTC58m

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 Jul 26, 21:55 UTC.
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 DAL1381, DAL1470, DAL2827, DAL2471, DAL1750.