Apparatus

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sensors Mode-S transponder

ADB2A4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N982AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
ADB2A4
Octal
53331244
Decimal
11,383,460
Country
US
Tail
N982AT
Type
B712
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
758
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S ADB2A4.

Country allocation

The ICAO 24-bit address ADB2A4 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
DAL2763 Delta Air Lines 11 2026-07-17
DAL3118 - 10 2026-07-17
DAL2944 - 9 2026-06-27
DAL1391 Delta Air Lines 9 2026-07-24
DAL1290 Delta Air Lines 9 2026-05-21
DAL2857 Delta Air Lines 8 2026-06-27
DAL1708 - 8 2026-07-10
DAL1248 Delta Air Lines 8 2026-06-10
DAL724 Delta Air Lines 7 2026-05-27
DAL3127 - 7 2026-07-10
DAL3094 - 7 2026-06-24
DAL3064 - 7 2026-07-02
DAL3051 - 7 2026-07-07
DAL2718 - 7 2026-06-25
DAL2220 - 7 2026-06-12
DAL1725 - 7 2026-07-06
DAL1546 Delta Air Lines 7 2026-07-24
DAL1149 - 7 2026-06-25
DAL1021 - 7 2026-07-10
DAL3183 - 6 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1821 ATL → CMH Jul 26, 21:30 UTCJul 26, 23:00 UTC1h 30m
2026-07-26 DAL1821 ATL → CMH Jul 26, 18:10 UTCJul 26, 19:35 UTC1h 25m
2026-07-26 DAL2826 SLC → CVG Jul 26, 15:35 UTCJul 26, 17:00 UTC1h 25m
2026-07-26 DAL2826 SLC → CVG Jul 26, 13:00 UTCJul 26, 14:25 UTC1h 25m
2026-07-26 DAL2596 PHL → ATL Jul 26, 10:05 UTCJul 26, 11:20 UTC1h 15m
2026-07-26 DAL2609 ATL → BOS Jul 26, 02:50 UTCJul 26, 04:05 UTC1h 15m
2026-07-25 DAL1014 ATL → BDL Jul 25, 22:40 UTCJul 26, 00:20 UTC1h 40m
2026-07-25 DAL1014 ATL → BDL Jul 25, 19:55 UTCJul 25, 21:35 UTC1h 40m
2026-07-25 DAL2577 TPA → BOS Jul 25, 17:05 UTCJul 25, 18:20 UTC1h 15m
2026-07-25 DAL2577 TPA → BOS Jul 25, 17:03 UTCJul 25, 18:21 UTC1h 18m
2026-07-25 DAL2577 TPA → BOS Jul 25, 14:30 UTCJul 25, 15:40 UTC1h 10m
2026-07-25 DAL2039 ORD → DTW Jul 25, 12:25 UTCJul 25, 13:10 UTC45m
2026-07-25 DAL2039 ORD → DTW Jul 25, 12:20 UTCJul 25, 13:03 UTC43m
2026-07-25 DAL1665 SLC → DFW Jul 25, 00:20 UTCJul 25, 01:05 UTC45m
2026-07-24 DAL1391 EWR → DTW Jul 24, 21:34 UTCJul 24, 22:52 UTC1h 18m
2026-07-24 DAL1391 EWR → DTW Jul 24, 19:15 UTCJul 24, 20:25 UTC1h 10m
2026-07-24 DAL1546 LAS → MSP Jul 24, 16:40 UTCJul 24, 17:45 UTC1h 5m
2026-07-24 DAL1546 LAS → MSP Jul 24, 16:39 UTCJul 24, 17:43 UTC1h 4m
2026-07-24 DAL1546 LAS → MSP Jul 24, 14:30 UTCJul 24, 15:35 UTC1h 5m
2026-07-24 DAL2039 ORD → DTW Jul 24, 12:10 UTCJul 24, 13:00 UTC50m
2026-07-24 DAL1665 SLC → DFW Jul 24, 00:25 UTCJul 24, 01:25 UTC1h 0m
2026-07-23 DAL1391 EWR → DTW Jul 23, 22:00 UTCJul 23, 23:00 UTC1h 0m
2026-07-23 DAL1391 EWR → DTW Jul 23, 21:57 UTCJul 23, 23:16 UTC1h 19m
2026-07-23 DAL1391 EWR → DTW Jul 23, 19:25 UTCJul 23, 20:40 UTC1h 15m
2026-07-23 DAL1546 LAS → MSP Jul 23, 16:40 UTCJul 23, 17:40 UTC1h 0m
2026-07-23 DAL1546 LAS → MSP Jul 23, 14:30 UTCJul 23, 15:35 UTC1h 5m
2026-07-23 DAL2370 ATL → TLH Jul 23, 11:40 UTCJul 23, 13:10 UTC1h 30m
2026-07-22 DAL2384 GEG → SEA Jul 22, 23:35 UTCJul 23, 00:20 UTC45m
2026-07-22 DAL2539 FLL → CVG Jul 22, 20:30 UTCJul 22, 21:20 UTC50m
2026-07-22 DAL2539 FLL → CVG Jul 22, 20:28 UTCJul 22, 21:20 UTC52m
2026-07-22 DAL2539 FLL → CVG Jul 22, 18:40 UTCJul 22, 19:25 UTC45m
2026-07-22 DAL441 RDU → MSP Jul 22, 15:20 UTCJul 22, 17:00 UTC1h 40m
2026-07-22 DAL441 RDU → MSP Jul 22, 15:17 UTCJul 22, 16:58 UTC1h 41m
2026-07-22 DAL441 RDU → MSP Jul 22, 12:20 UTCJul 22, 14:00 UTC1h 40m
2026-07-21 DAL2158 - Jul 21, 16:35 UTCJul 21, 17:10 UTC35m
2026-07-21 DAL2158 - Jul 21, 14:25 UTCJul 21, 14:55 UTC30m
2026-07-21 DAL1624 SAN → MSP Jul 21, 12:20 UTCJul 21, 13:10 UTC50m
2026-07-21 DAL2001 ATL → CMH Jul 21, 00:55 UTCJul 21, 01:45 UTC50m
2026-07-20 DAL3083 VPS → ATL Jul 20, 23:00 UTCJul 20, 23:55 UTC55m
2026-07-20 DAL3083 VPS → ATL Jul 20, 22:53 UTCJul 20, 23:39 UTC46m
2026-07-20 DAL3083 VPS → ATL Jul 20, 21:10 UTCJul 20, 21:45 UTC35m
2026-07-20 DAL940 LAX → TPA Jul 20, 19:00 UTCJul 20, 19:40 UTC40m
2026-07-20 DAL940 LAX → TPA Jul 20, 18:58 UTCJul 20, 19:36 UTC38m
2026-07-20 DAL940 LAX → TPA Jul 20, 17:20 UTCJul 20, 18:00 UTC40m
2026-07-20 DAL1010 DFW → DTW Jul 20, 14:25 UTCJul 20, 15:00 UTC35m
2026-07-20 DAL1010 DFW → DTW Jul 20, 12:35 UTCJul 20, 13:10 UTC35m
2026-07-20 DAL2516 - Jul 20, 10:05 UTCJul 20, 11:05 UTC1h 0m
2026-07-20 DAL1289 - Jul 20, 03:10 UTCJul 20, 04:10 UTC1h 0m
2026-07-20 DAL2878 SEA → SLC Jul 20, 00:45 UTCJul 20, 01:25 UTC40m
2026-07-19 DAL2878 SEA → SLC Jul 19, 22:15 UTCJul 19, 22:50 UTC35m

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 N982AT page for operator, model, and routing details .

Mode-S ADB2A4 frequently asked

What is Mode-S code ADB2A4?
ADB2A4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N982AT.
Where is Mode-S ADB2A4 registered?
Mode-S code ADB2A4 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 ADB2A4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADB2A4, octal 53331244, decimal 11,383,460.
What flights does ADB2A4 operate?
Mode-S ADB2A4 has broadcast 20 distinct callsigns, including DAL2763, DAL3118, DAL2944, DAL1391, DAL1290.