Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AD2EFA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N949DZ · operated by DELTA AIR LINES INC

Hex
AD2EFA
Octal
53227372
Decimal
11,349,754
Country
US
Tail
N949DZ
Type
B739
Broadcasting now · callsign DAL2810 · -100 ft
Flights observed
604
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

AD2EFA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD2EFA 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
DAL2471 - 25 2026-07-12
DAL3196 Delta Air Lines 23 2026-05-31
DAL1381 - 20 2026-07-04
DAL1470 - 18 2026-07-10
DAL1067 - 18 2026-07-12
DAL3107 - 17 2026-07-09
DAL3091 - 17 2026-07-07
DAL2827 - 16 2026-07-10
DAL1750 - 16 2026-07-13
DAL1550 - 16 2026-07-01
DAL527 - 12 2026-07-14
DAL2908 Delta Air Lines 12 2026-06-03
DAL2547 - 11 2026-07-05
DAL1130 - 11 2026-06-14
DAL3110 - 10 2026-07-11
DAL2911 - 10 2026-06-26
DAL1702 - 10 2026-07-06
DAL1660 Delta Air Lines 10 2026-05-20
DAL1363 - 10 2026-07-01
DAL1204 - 10 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL527 SAV → ATL Jul 14, 00:45 UTCJul 14, 01:25 UTC40m
2026-07-13 DAL527 ATL → SAV Jul 13, 22:55 UTCJul 13, 23:45 UTC50m
2026-07-13 DAL1750 - Jul 13, 19:25 UTCJul 13, 21:10 UTC1h 45m
2026-07-13 DAL1750 CMH → ATL Jul 13, 19:25 UTCJul 13, 21:10 UTC1h 45m
2026-07-13 DAL1750 ATL → CMH Jul 13, 16:45 UTCJul 13, 17:55 UTC1h 10m
2026-07-13 DAL3103 - Jul 13, 14:25 UTCJul 13, 15:15 UTC50m
2026-07-13 DAL3103 PNS → ATL Jul 13, 14:24 UTCJul 13, 15:13 UTC49m
2026-07-13 DAL3103 ATL → PNS Jul 13, 12:10 UTCJul 13, 13:05 UTC55m
2026-07-13 DAL3059 - Jul 13, 03:50 UTCJul 13, 04:40 UTC50m
2026-07-13 DAL3059 ATL → PNS Jul 13, 02:05 UTCJul 13, 02:55 UTC50m
2026-07-12 DAL1067 SAV → ATL Jul 12, 23:28 UTCJul 13, 00:08 UTC40m
2026-07-12 DAL1067 SAV → ATL Jul 12, 23:30 UTCJul 13, 00:10 UTC40m
2026-07-12 DAL1067 ATL → SAV Jul 12, 19:35 UTCJul 12, 20:30 UTC55m
2026-07-12 DAL2471 - Jul 12, 15:50 UTCJul 12, 17:25 UTC1h 35m
2026-07-12 DAL2471 - Jul 12, 12:50 UTCJul 12, 14:30 UTC1h 40m
2026-07-12 DAL2124 - Jul 12, 10:20 UTCJul 12, 11:05 UTC45m
2026-07-12 DAL3179 ATL → CHS Jul 12, 02:10 UTCJul 12, 02:55 UTC45m
2026-07-11 DAL1750 - Jul 11, 21:20 UTCJul 11, 21:35 UTC15m
2026-07-11 DAL1750 CMH → ATL Jul 11, 19:00 UTCJul 11, 21:35 UTC2h 35m
2026-07-11 DAL1750 CMH → ATL Jul 11, 19:00 UTCJul 11, 21:03 UTC2h 3m
2026-07-11 DAL1750 ATL → CMH Jul 11, 16:10 UTCJul 11, 17:15 UTC1h 5m
2026-07-11 DAL3110 - Jul 11, 13:10 UTCJul 11, 14:45 UTC1h 35m
2026-07-11 DAL3110 MCI → ATL Jul 11, 13:08 UTCJul 11, 14:43 UTC1h 35m
2026-07-10 DAL1470 - Jul 10, 22:20 UTCJul 10, 23:55 UTC1h 35m
2026-07-10 DAL2827 - Jul 10, 19:20 UTCJul 10, 20:20 UTC1h 0m
2026-07-10 DAL2827 DAB → ATL Jul 10, 19:17 UTCJul 10, 20:18 UTC1h 1m
2026-07-10 DAL2827 - Jul 10, 17:00 UTCJul 10, 18:00 UTC1h 0m
2026-07-10 DAL3103 - Jul 10, 14:30 UTCJul 10, 15:15 UTC45m
2026-07-10 DAL3103 ATL → PNS Jul 10, 12:15 UTCJul 10, 13:00 UTC45m
2026-07-10 DAL1126 - Jul 10, 00:10 UTCJul 10, 01:05 UTC55m
2026-07-09 DAL1126 - Jul 9, 22:00 UTCJul 9, 22:55 UTC55m
2026-07-09 DAL3107 - Jul 9, 17:20 UTCJul 9, 18:00 UTC40m
2026-07-09 DAL3107 - Jul 9, 14:55 UTCJul 9, 15:45 UTC50m
2026-07-09 DAL1901 - Jul 9, 12:30 UTCJul 9, 13:40 UTC1h 10m
2026-07-09 DAL1482 ATL → IND Jul 9, 01:00 UTCJul 9, 02:00 UTC1h 0m
2026-07-09 DAL1482 ATL → IND Jul 9, 00:58 UTCJul 9, 01:58 UTC1h 0m
2026-07-08 DAL2484 - Jul 8, 22:35 UTCJul 8, 23:05 UTC30m
2026-07-08 DAL2484 - Jul 8, 20:40 UTCJul 8, 21:05 UTC25m
2026-07-08 DAL1488 - Jul 8, 18:20 UTCJul 8, 19:15 UTC55m
2026-07-08 DAL1488 RDU → ATL Jul 8, 18:18 UTCJul 8, 19:12 UTC54m
2026-07-08 DAL1488 ATL → RDU Jul 8, 15:40 UTCJul 8, 16:45 UTC1h 5m
2026-07-08 DAL1212 - Jul 8, 12:05 UTCJul 8, 13:40 UTC1h 35m
2026-07-07 DAL1470 - Jul 7, 22:15 UTCJul 7, 23:55 UTC1h 40m
2026-07-07 DAL1067 - Jul 7, 20:00 UTCJul 7, 20:40 UTC40m
2026-07-07 DAL1067 ATL → SAV Jul 7, 17:45 UTCJul 7, 18:25 UTC40m
2026-07-07 DAL3091 - Jul 7, 15:45 UTCJul 7, 16:30 UTC45m
2026-07-07 DAL3091 ATL → CHS Jul 7, 13:25 UTCJul 7, 14:20 UTC55m
2026-07-07 DAL1504 - Jul 7, 10:00 UTCJul 7, 11:15 UTC1h 15m
2026-07-07 DAL1351 - Jul 7, 03:25 UTCJul 7, 04:35 UTC1h 10m
2026-07-07 DAL3059 - Jul 7, 00:45 UTCJul 7, 01:30 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 N949DZ page for operator, model, and routing details .

Mode-S AD2EFA frequently asked

What is Mode-S code AD2EFA?
AD2EFA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N949DZ.
Where is Mode-S AD2EFA registered?
Mode-S code AD2EFA 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 AD2EFA broadcasting right now?
Yes. Mode-S AD2EFA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD2EFA, octal 53227372, decimal 11,349,754.
What flights does AD2EFA operate?
Mode-S AD2EFA has broadcast 20 distinct callsigns, including DAL2471, DAL3196, DAL1381, DAL1470, DAL1067.