Apparatus

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sensors Mode-S transponder

ACD83D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N927AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
ACD83D
Octal
53154075
Decimal
11,327,549
Country
US
Tail
N927AT
Type
B712
No current signal · last broadcast 2h ago
Flights observed
649
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S ACD83D.

Country allocation

The ICAO 24-bit address ACD83D 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
DAL3193 - 13 2026-06-25
DAL3190 - 11 2026-06-26
DAL512 Delta Air Lines 9 2026-05-24
DAL3030 - 9 2026-06-19
DAL3088 Delta Air Lines 8 2026-05-19
DAL2128 - 8 2026-06-21
DAL3094 Delta Air Lines 7 2026-05-20
DAL3079 - 7 2026-07-01
DAL3033 Delta Air Lines 7 2026-05-24
DAL2763 - 7 2026-06-24
DAL2718 Delta Air Lines 7 2026-06-04
DAL2007 Delta Air Lines 7 2026-04-20
DAL1979 - 7 2026-07-08
DAL1374 - 7 2026-06-24
DAL1183 - 7 2026-07-10
DAL1044 Delta Air Lines 7 2026-06-04
DAL3181 - 6 2026-07-01
DAL3159 Delta Air Lines 6 2026-05-01
DAL3051 - 6 2026-07-13
DAL2364 - 6 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL3022 ATL → HSV Jul 14, 03:20 UTCJul 14, 03:55 UTC35m
2026-07-14 DAL2364 - Jul 14, 00:15 UTCJul 14, 02:05 UTC1h 50m
2026-07-13 DAL2364 - Jul 13, 21:35 UTCJul 13, 23:25 UTC1h 50m
2026-07-13 DAL2157 - Jul 13, 19:25 UTCJul 13, 20:05 UTC40m
2026-07-13 DAL2157 - Jul 13, 16:30 UTCJul 13, 17:10 UTC40m
2026-07-13 DAL3051 - Jul 13, 14:30 UTCJul 13, 15:10 UTC40m
2026-07-13 DAL3051 - Jul 13, 12:25 UTCJul 13, 13:05 UTC40m
2026-07-13 DAL1666 - Jul 13, 10:20 UTCJul 13, 11:15 UTC55m
2026-07-13 DAL2501 - Jul 13, 03:40 UTCJul 13, 04:25 UTC45m
2026-07-13 DAL2501 ATL → MEM Jul 13, 03:35 UTCJul 13, 04:26 UTC51m
2026-07-13 DAL2803 - Jul 13, 01:25 UTCJul 13, 02:15 UTC50m
2026-07-12 DAL2803 ATL → VPS Jul 12, 23:35 UTCJul 13, 00:20 UTC45m
2026-07-12 DAL2484 - Jul 12, 01:05 UTCJul 12, 01:40 UTC35m
2026-07-12 DAL2484 BHM → ATL Jul 12, 01:04 UTCJul 12, 01:42 UTC38m
2026-07-11 DAL2484 - Jul 11, 21:05 UTCJul 11, 21:30 UTC25m
2026-07-11 DAL1500 - Jul 11, 17:50 UTCJul 11, 18:50 UTC1h 0m
2026-07-11 DAL1500 MOB → ATL Jul 11, 17:50 UTCJul 11, 18:44 UTC54m
2026-07-11 DAL1500 - Jul 11, 16:00 UTCJul 11, 16:45 UTC45m
2026-07-11 DAL3174 - Jul 11, 14:00 UTCJul 11, 14:50 UTC50m
2026-07-11 DAL3144 - Jul 11, 11:55 UTCJul 11, 12:35 UTC40m
2026-07-11 DAL3027 - Jul 11, 01:15 UTCJul 11, 02:20 UTC1h 5m
2026-07-10 DAL3027 - Jul 10, 22:10 UTCJul 10, 23:15 UTC1h 5m
2026-07-10 DAL1155 BNA → ATL Jul 10, 16:40 UTCJul 10, 17:25 UTC45m
2026-07-10 DAL1155 BNA → ATL Jul 10, 16:39 UTCJul 10, 17:38 UTC59m
2026-07-10 DAL1155 ATL → BNA Jul 10, 14:50 UTCJul 10, 15:30 UTC40m
2026-07-10 DAL1183 - Jul 10, 11:25 UTCJul 10, 12:35 UTC1h 10m
2026-07-10 DAL3111 ATL → BTR Jul 10, 02:40 UTCJul 10, 03:40 UTC1h 0m
2026-07-09 DAL2857 - Jul 9, 23:50 UTCJul 10, 01:15 UTC1h 25m
2026-07-09 DAL2857 - Jul 9, 21:20 UTCJul 9, 22:40 UTC1h 20m
2026-07-09 DAL2944 - Jul 9, 18:10 UTCJul 9, 18:50 UTC40m
2026-07-09 DAL2944 - Jul 9, 16:30 UTCJul 9, 17:10 UTC40m
2026-07-09 DAL3011 - Jul 9, 14:15 UTCJul 9, 14:55 UTC40m
2026-07-09 DAL3011 SAV → ATL Jul 9, 14:12 UTCJul 9, 14:50 UTC38m
2026-07-09 DAL3011 ATL → SAV Jul 9, 12:25 UTCJul 9, 13:05 UTC40m
2026-07-08 DAL2086 - Jul 8, 23:40 UTCJul 9, 01:25 UTC1h 45m
2026-07-08 DAL2086 ATL → DSM Jul 8, 20:55 UTCJul 8, 22:40 UTC1h 45m
2026-07-08 DAL3141 - Jul 8, 18:55 UTCJul 8, 19:25 UTC30m
2026-07-08 DAL3141 ATL → CHA Jul 8, 17:20 UTCJul 8, 17:45 UTC25m
2026-07-08 DAL3199 - Jul 8, 15:15 UTCJul 8, 16:05 UTC50m
2026-07-08 DAL3199 - Jul 8, 13:10 UTCJul 8, 13:55 UTC45m
2026-07-08 DAL1979 - Jul 8, 10:15 UTCJul 8, 10:50 UTC35m
2026-07-08 DAL1979 BHM → ATL Jul 8, 10:12 UTCJul 8, 10:46 UTC34m
2026-07-08 DAL2034 - Jul 8, 04:15 UTCJul 8, 04:45 UTC30m
2026-07-07 DAL3118 - Jul 7, 16:10 UTCJul 7, 17:10 UTC1h 0m
2026-07-07 DAL3118 ATL → MLB Jul 7, 13:05 UTCJul 7, 14:10 UTC1h 5m
2026-07-06 DAL1868 - Jul 6, 23:00 UTCJul 6, 23:45 UTC45m
2026-07-06 DAL1868 TLH → ATL Jul 6, 22:57 UTCJul 6, 23:40 UTC43m
2026-07-06 DAL1868 - Jul 6, 21:20 UTCJul 6, 21:55 UTC35m
2026-07-06 DAL1093 - Jul 6, 01:50 UTCJul 6, 02:35 UTC45m
2026-07-05 DAL1093 - Jul 5, 23:55 UTCJul 6, 00:40 UTC45m

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 N927AT page for operator, model, and routing details .

Mode-S ACD83D frequently asked

What is Mode-S code ACD83D?
ACD83D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N927AT.
Where is Mode-S ACD83D registered?
Mode-S code ACD83D 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 ACD83D broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACD83D, octal 53154075, decimal 11,327,549.
What flights does ACD83D operate?
Mode-S ACD83D has broadcast 20 distinct callsigns, including DAL3193, DAL3190, DAL512, DAL3030, DAL3088.