Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AD4EBA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N957AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
AD4EBA
Octal
53247272
Decimal
11,357,882
Country
US
Tail
N957AT
Type
B712
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
770
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S AD4EBA.

Country allocation

The ICAO 24-bit address AD4EBA 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
DAL2681 Delta Air Lines 12 2026-05-26
DAL2048 - 10 2026-07-21
DAL3103 Delta Air Lines 9 2026-06-01
DAL3133 Delta Air Lines 8 2026-07-26
DAL2763 Delta Air Lines 8 2026-05-19
DAL2599 - 8 2026-06-17
DAL2573 Delta Air Lines 8 2026-05-21
DAL2182 Delta Air Lines 8 2026-07-20
DAL2157 - 8 2026-07-22
DAL2780 - 7 2026-06-24
DAL2730 - 7 2026-07-07
DAL2539 Delta Air Lines 7 2026-06-03
DAL1549 - 7 2026-07-15
DAL1248 - 7 2026-07-07
DAL1017 Delta Air Lines 7 2026-06-11
DAL940 Delta Air Lines 6 2026-07-23
DAL844 Delta Air Lines 6 2026-05-15
DAL3163 Delta Air Lines 6 2026-06-12
DAL3159 Delta Air Lines 6 2026-07-24
DAL3025 Delta Air Lines 6 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL3133 GNV → ATL Jul 26, 20:10 UTCJul 26, 21:00 UTC50m
2026-07-26 DAL3133 GNV → ATL Jul 26, 18:25 UTCJul 26, 19:15 UTC50m
2026-07-26 DAL573 SAN → BOS Jul 26, 16:15 UTCJul 26, 16:45 UTC30m
2026-07-26 DAL573 SAN → BOS Jul 26, 14:15 UTCJul 26, 14:45 UTC30m
2026-07-25 DAL1868 SEA → CUN Jul 25, 23:00 UTCJul 25, 23:50 UTC50m
2026-07-25 DAL1868 SEA → CUN Jul 25, 21:00 UTCJul 25, 21:40 UTC40m
2026-07-25 DAL1500 PVD → ATL Jul 25, 18:35 UTCJul 25, 19:50 UTC1h 15m
2026-07-25 DAL1500 PVD → ATL Jul 25, 18:31 UTCJul 25, 19:48 UTC1h 17m
2026-07-25 DAL1500 PVD → ATL Jul 25, 16:20 UTCJul 25, 17:10 UTC50m
2026-07-25 DAL3174 - Jul 25, 14:00 UTCJul 25, 14:40 UTC40m
2026-07-25 DAL3144 ATL → CLT Jul 25, 11:55 UTCJul 25, 12:40 UTC45m
2026-07-25 DAL2939 MEM → ATL Jul 25, 03:55 UTCJul 25, 04:40 UTC45m
2026-07-25 DAL2939 MEM → ATL Jul 25, 02:00 UTCJul 25, 02:55 UTC55m
2026-07-24 DAL3159 ATL → BNA Jul 24, 23:35 UTCJul 25, 00:25 UTC50m
2026-07-24 DAL3159 ATL → BNA Jul 24, 23:31 UTCJul 25, 00:21 UTC50m
2026-07-24 DAL3159 ATL → BNA Jul 24, 20:40 UTCJul 24, 21:45 UTC1h 5m
2026-07-24 DAL1286 - Jul 24, 16:05 UTCJul 24, 16:50 UTC45m
2026-07-24 DAL1286 - Jul 24, 13:50 UTCJul 24, 14:30 UTC40m
2026-07-24 DAL1136 MIA → LGA Jul 24, 10:30 UTCJul 24, 12:20 UTC1h 50m
2026-07-24 DAL2707 LGA → ATL Jul 24, 00:45 UTCJul 24, 02:40 UTC1h 55m
2026-07-23 DAL3083 VPS → ATL Jul 23, 22:15 UTCJul 23, 23:00 UTC45m
2026-07-23 DAL3083 VPS → ATL Jul 23, 22:11 UTCJul 23, 22:57 UTC46m
2026-07-23 DAL3083 VPS → ATL Jul 23, 20:15 UTCJul 23, 20:55 UTC40m
2026-07-23 DAL940 LAX → TPA Jul 23, 18:00 UTCJul 23, 18:40 UTC40m
2026-07-23 DAL940 LAX → TPA Jul 23, 18:00 UTCJul 23, 18:38 UTC38m
2026-07-23 DAL940 LAX → TPA Jul 23, 16:15 UTCJul 23, 16:55 UTC40m
2026-07-23 DAL3011 SAV → ATL Jul 23, 14:10 UTCJul 23, 14:50 UTC40m
2026-07-23 DAL3011 SAV → ATL Jul 23, 12:25 UTCJul 23, 13:10 UTC45m
2026-07-23 DAL3186 MEM → ATL Jul 23, 10:05 UTCJul 23, 10:45 UTC40m
2026-07-23 DAL2132 RDU → LGA Jul 23, 00:55 UTCJul 23, 01:40 UTC45m
2026-07-22 DAL2571 LGA → ORD Jul 22, 22:45 UTCJul 22, 23:15 UTC30m
2026-07-22 DAL2571 LGA → ORD Jul 22, 22:38 UTCJul 22, 23:09 UTC31m
2026-07-22 DAL2571 LGA → ORD Jul 22, 21:00 UTCJul 22, 21:35 UTC35m
2026-07-22 DAL2157 - Jul 22, 18:40 UTCJul 22, 19:20 UTC40m
2026-07-22 DAL2157 - Jul 22, 16:30 UTCJul 22, 17:15 UTC45m
2026-07-22 DAL3090 ATL → STL Jul 22, 14:30 UTCJul 22, 15:15 UTC45m
2026-07-22 DAL3090 ATL → STL Jul 22, 12:20 UTCJul 22, 12:55 UTC35m
2026-07-22 DAL2184 LGA → ORD Jul 22, 11:10 UTCJul 22, 11:15 UTC5m
2026-07-21 DAL1235 BOS → AUS Jul 21, 22:35 UTCJul 21, 23:55 UTC1h 20m
2026-07-21 DAL1235 BOS → AUS Jul 21, 22:34 UTCJul 21, 23:52 UTC1h 18m
2026-07-21 DAL3101 - Jul 21, 20:25 UTCJul 21, 21:00 UTC35m
2026-07-21 DAL2037 TPA → BOS Jul 21, 18:39 UTCJul 21, 19:16 UTC37m
2026-07-21 DAL2048 - Jul 21, 16:55 UTCJul 21, 17:35 UTC40m
2026-07-21 DAL2048 VPS → ATL Jul 21, 16:50 UTCJul 21, 17:35 UTC45m
2026-07-21 DAL2048 - Jul 21, 14:30 UTCJul 21, 15:10 UTC40m
2026-07-21 DAL516 LAX → JFK Jul 21, 11:15 UTCJul 21, 12:55 UTC1h 40m
2026-07-21 DAL516 LAX → JFK Jul 21, 11:12 UTCJul 21, 12:48 UTC1h 36m
2026-07-21 DAL1104 JFK → LAS Jul 21, 01:55 UTCJul 21, 03:35 UTC1h 40m
2026-07-20 DAL2182 SFO → DTW Jul 20, 23:55 UTCJul 21, 00:30 UTC35m
2026-07-20 DAL2182 SFO → DTW Jul 20, 21:55 UTCJul 20, 22:30 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 N957AT page for operator, model, and routing details .

Mode-S AD4EBA frequently asked

What is Mode-S code AD4EBA?
AD4EBA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N957AT.
Where is Mode-S AD4EBA registered?
Mode-S code AD4EBA 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 AD4EBA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD4EBA, octal 53247272, decimal 11,357,882.
What flights does AD4EBA operate?
Mode-S AD4EBA has broadcast 20 distinct callsigns, including DAL2681, DAL2048, DAL3103, DAL3133, DAL2763.