Apparatus

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sensors Mode-S transponder

AD474C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N955AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
AD474C
Octal
53243514
Decimal
11,355,980
Country
US
Tail
N955AT
Type
B712
Broadcasting now · callsign DAL1110 · 26,975 ft
Flights observed
696
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:30 UTC

Current position

AD474C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD474C 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
DAL3030 Delta Air Lines 15 2026-07-22
DAL2793 Delta Air Lines 13 2026-07-24
DAL3143 - 11 2026-07-12
DAL426 - 10 2026-07-17
DAL3012 Delta Air Lines 10 2026-07-25
DAL2620 Delta Air Lines 9 2026-07-20
DAL1248 - 9 2026-06-25
DAL3195 Delta Air Lines 8 2026-05-27
DAL3078 Delta Air Lines 8 2026-07-21
DAL3158 Delta Air Lines 7 2026-05-31
DAL3136 - 7 2026-06-27
DAL3108 Delta Air Lines 7 2026-06-05
DAL2826 Delta Air Lines 7 2026-07-18
DAL1063 Delta Air Lines 7 2026-05-23
DAL3118 Delta Air Lines 6 2026-07-25
DAL3064 - 6 2026-06-24
DAL3026 - 6 2026-06-30
DAL2128 Delta Air Lines 6 2026-07-20
DAL1155 Delta Air Lines 6 2026-06-02
DAL876 Delta Air Lines 5 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2546 CVG → ATL Jul 26, 19:50 UTCJul 26, 20:30 UTC40m
2026-07-26 DAL3190 ATL → CLT Jul 26, 18:00 UTCJul 26, 18:40 UTC40m
2026-07-26 DAL3190 ATL → CLT Jul 26, 17:56 UTCJul 26, 18:32 UTC36m
2026-07-26 DAL3190 ATL → CLT Jul 26, 15:40 UTCJul 26, 16:20 UTC40m
2026-07-26 DAL3009 HSV → ATL Jul 26, 12:15 UTCJul 26, 12:50 UTC35m
2026-07-25 DAL3171 ATL → HSV Jul 25, 22:08 UTCJul 25, 22:37 UTC29m
2026-07-25 DAL3171 ATL → HSV Jul 25, 22:10 UTCJul 25, 22:45 UTC35m
2026-07-25 DAL3012 BHM → ATL Jul 25, 19:50 UTCJul 25, 20:20 UTC30m
2026-07-25 DAL3012 BHM → ATL Jul 25, 19:44 UTCJul 25, 20:17 UTC33m
2026-07-25 DAL3012 BHM → ATL Jul 25, 17:50 UTCJul 25, 18:05 UTC15m
2026-07-25 DAL3118 MLB → ATL Jul 25, 15:20 UTCJul 25, 16:25 UTC1h 5m
2026-07-25 DAL3118 MLB → ATL Jul 25, 13:10 UTCJul 25, 14:20 UTC1h 10m
2026-07-25 DAL3043 ATL → MLB Jul 25, 00:50 UTCJul 25, 02:15 UTC1h 25m
2026-07-24 DAL3043 ATL → MLB Jul 24, 22:40 UTCJul 24, 23:50 UTC1h 10m
2026-07-24 DAL2157 BNA → BOS Jul 24, 20:40 UTCJul 24, 21:30 UTC50m
2026-07-24 DAL2157 BNA → BOS Jul 24, 16:40 UTCJul 24, 17:35 UTC55m
2026-07-24 DAL2157 BNA → BOS Jul 24, 16:37 UTCJul 24, 17:33 UTC56m
2026-07-24 DAL2793 SLC → MKE Jul 24, 14:20 UTCJul 24, 15:05 UTC45m
2026-07-24 DAL2793 SLC → MKE Jul 24, 14:15 UTCJul 24, 15:05 UTC50m
2026-07-24 DAL2793 SLC → MKE Jul 24, 12:30 UTCJul 24, 13:15 UTC45m
2026-07-24 DAL2637 BNA → ATL Jul 24, 10:15 UTCJul 24, 11:00 UTC45m
2026-07-24 DAL3002 ATL → BNA Jul 24, 01:45 UTCJul 24, 02:30 UTC45m
2026-07-24 DAL3002 ATL → BNA Jul 24, 01:44 UTCJul 24, 02:25 UTC41m
2026-07-23 DAL2857 MSP → ORD Jul 23, 22:55 UTCJul 24, 00:25 UTC1h 30m
2026-07-23 DAL2857 MSP → ORD Jul 23, 20:15 UTCJul 23, 21:40 UTC1h 25m
2026-07-23 DAL2944 SAV → MSP Jul 23, 17:55 UTCJul 23, 18:30 UTC35m
2026-07-23 DAL2944 SAV → MSP Jul 23, 17:53 UTCJul 23, 18:29 UTC36m
2026-07-23 DAL2944 SAV → MSP Jul 23, 16:15 UTCJul 23, 16:50 UTC35m
2026-07-23 DAL1010 DFW → DTW Jul 23, 14:10 UTCJul 23, 14:50 UTC40m
2026-07-23 DAL1010 DFW → DTW Jul 23, 12:30 UTCJul 23, 13:05 UTC35m
2026-07-23 DAL1979 MSP → PUJ Jul 23, 10:30 UTCJul 23, 11:05 UTC35m
2026-07-23 DAL3202 ATL → BNA Jul 23, 00:30 UTCJul 23, 00:50 UTC20m
2026-07-22 DAL1868 SEA → CUN Jul 22, 21:50 UTCJul 22, 22:35 UTC45m
2026-07-22 DAL1868 SEA → CUN Jul 22, 19:45 UTCJul 22, 20:25 UTC40m
2026-07-22 DAL3030 GNV → ATL Jul 22, 17:30 UTCJul 22, 18:15 UTC45m
2026-07-22 DAL3030 GNV → ATL Jul 22, 15:25 UTCJul 22, 16:10 UTC45m
2026-07-22 DAL1158 MSN → DTW Jul 22, 12:10 UTCJul 22, 13:50 UTC1h 40m
2026-07-21 DAL2784 ORD → LGA Jul 21, 23:10 UTCJul 22, 00:50 UTC1h 40m
2026-07-21 DAL3078 ATL → LEX Jul 21, 20:25 UTCJul 21, 21:25 UTC1h 0m
2026-07-21 DAL3078 ATL → LEX Jul 21, 18:25 UTCJul 21, 19:15 UTC50m
2026-07-20 DAL2128 ATL → ICT Jul 20, 23:30 UTCJul 21, 01:20 UTC1h 49m
2026-07-20 DAL2128 ATL → ICT Jul 20, 20:50 UTCJul 20, 22:30 UTC1h 40m
2026-07-20 DAL2620 RDU → BOS Jul 20, 18:05 UTCJul 20, 19:35 UTC1h 30m
2026-07-20 DAL2620 RDU → BOS Jul 20, 15:20 UTCJul 20, 16:45 UTC1h 25m
2026-07-20 DAL1625 JFK → MCO Jul 20, 12:35 UTCJul 20, 13:25 UTC50m
2026-07-20 DAL1230 - Jul 20, 01:10 UTCJul 20, 02:30 UTC1h 20m
2026-07-19 DAL2480 - Jul 19, 22:35 UTCJul 19, 23:40 UTC1h 5m
2026-07-19 DAL2480 - Jul 19, 20:25 UTCJul 19, 21:30 UTC1h 5m
2026-07-19 DAL2331 ATL → JAX Jul 19, 17:00 UTCJul 19, 18:05 UTC1h 5m
2026-07-19 DAL2331 ATL → JAX Jul 19, 14:20 UTCJul 19, 15:25 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 N955AT page for operator, model, and routing details .

Mode-S AD474C frequently asked

What is Mode-S code AD474C?
AD474C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N955AT.
Where is Mode-S AD474C registered?
Mode-S code AD474C 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 AD474C broadcasting right now?
Yes. Mode-S AD474C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD474C, octal 53243514, decimal 11,355,980.
What flights does AD474C operate?
Mode-S AD474C has broadcast 20 distinct callsigns, including DAL3030, DAL2793, DAL3143, DAL426, DAL3012.