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
No current signal · last broadcast Jul 25, 23:15 UTC
Flights observed
682
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 23:15 UTC

Last known position

Most recent position reported by Mode-S AD2EFA.

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 Delta Air Lines 27 2026-07-22
DAL3196 Delta Air Lines 23 2026-05-31
DAL1381 Delta Air Lines 23 2026-07-24
DAL1067 - 23 2026-07-19
DAL3091 Delta Air Lines 22 2026-07-23
DAL1550 Delta Air Lines 22 2026-07-23
DAL1470 Delta Air Lines 20 2026-07-18
DAL3107 Delta Air Lines 19 2026-07-20
DAL2827 Delta Air Lines 18 2026-07-21
DAL1750 Delta Air Lines 18 2026-07-25
DAL1363 Delta Air Lines 16 2026-07-24
DAL527 - 14 2026-07-20
DAL1702 Delta Air Lines 14 2026-07-24
DAL1130 Delta Air Lines 13 2026-07-25
DAL3110 Delta Air Lines 12 2026-07-25
DAL2908 Delta Air Lines 12 2026-06-03
DAL3103 Delta Air Lines 11 2026-07-21
DAL2911 Delta Air Lines 11 2026-07-20
DAL2547 - 11 2026-07-05
DAL1212 Delta Air Lines 11 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 DAL9936 JFK → ATL Jul 25, 21:30 UTCJul 25, 23:15 UTC1h 45m
2026-07-25 DAL1750 MSP → MYR Jul 25, 18:50 UTCJul 25, 20:00 UTC1h 10m
2026-07-25 DAL1750 MSP → MYR Jul 25, 16:20 UTCJul 25, 17:25 UTC1h 5m
2026-07-25 DAL3110 MCI → ATL Jul 25, 13:10 UTCJul 25, 14:50 UTC1h 40m
2026-07-25 DAL1130 DEN → MSP Jul 25, 01:00 UTCJul 25, 02:50 UTC1h 50m
2026-07-24 DAL1381 BOS → MCO Jul 24, 22:20 UTCJul 24, 23:10 UTC50m
2026-07-24 DAL1381 BOS → MCO Jul 24, 22:17 UTCJul 24, 23:05 UTC48m
2026-07-24 DAL1381 BOS → MCO Jul 24, 19:00 UTCJul 24, 19:55 UTC55m
2026-07-24 DAL1363 LGA → MSY Jul 24, 16:00 UTCJul 24, 17:20 UTC1h 20m
2026-07-24 DAL1363 LGA → MSY Jul 24, 13:20 UTCJul 24, 14:30 UTC1h 10m
2026-07-24 DAL1702 BOS → MCI Jul 24, 10:50 UTCJul 24, 11:30 UTC40m
2026-07-24 DAL2425 BOS → FLL Jul 24, 00:55 UTCJul 24, 01:30 UTC35m
2026-07-23 DAL1550 AUS → BOS Jul 23, 21:45 UTCJul 23, 22:45 UTC1h 0m
2026-07-23 DAL1550 AUS → BOS Jul 23, 19:30 UTCJul 23, 20:25 UTC55m
2026-07-23 DAL3091 ATL → CHS Jul 23, 17:15 UTCJul 23, 18:00 UTC45m
2026-07-23 DAL3091 ATL → CHS Jul 23, 13:20 UTCJul 23, 14:05 UTC45m
2026-07-23 DAL1702 SAV → ATL Jul 23, 10:55 UTCJul 23, 11:35 UTC40m
2026-07-23 DAL2425 BOS → FLL Jul 23, 00:45 UTCJul 23, 01:25 UTC40m
2026-07-22 DAL1550 AUS → BOS Jul 22, 21:50 UTCJul 22, 22:45 UTC55m
2026-07-22 DAL1550 AUS → BOS Jul 22, 19:10 UTCJul 22, 20:10 UTC1h 0m
2026-07-22 DAL2471 LEX → ATL Jul 22, 15:50 UTCJul 22, 17:25 UTC1h 35m
2026-07-22 DAL2471 LEX → ATL Jul 22, 12:45 UTCJul 22, 14:20 UTC1h 35m
2026-07-22 DAL2124 ATL → BOS Jul 22, 11:10 UTCJul 22, 11:15 UTC5m
2026-07-21 DAL3179 - Jul 21, 21:50 UTCJul 21, 22:30 UTC40m
2026-07-21 DAL2827 DAB → ATL Jul 21, 19:20 UTCJul 21, 20:15 UTC55m
2026-07-21 DAL2827 DAB → ATL Jul 21, 16:50 UTCJul 21, 17:45 UTC55m
2026-07-21 DAL3103 ATL → PNS Jul 21, 14:35 UTCJul 21, 15:20 UTC45m
2026-07-21 DAL3103 ATL → PNS Jul 21, 12:45 UTCJul 21, 13:30 UTC45m
2026-07-21 DAL1393 LAX → SEA Jul 21, 00:15 UTCJul 21, 01:20 UTC1h 5m
2026-07-20 DAL1393 LAX → SEA Jul 20, 21:55 UTCJul 20, 23:10 UTC1h 15m
2026-07-20 DAL3107 ATL → CHS Jul 20, 18:20 UTCJul 20, 19:00 UTC40m
2026-07-20 DAL3107 ATL → CHS Jul 20, 16:00 UTCJul 20, 16:40 UTC40m
2026-07-20 DAL1212 DCA → ATL Jul 20, 12:10 UTCJul 20, 13:40 UTC1h 30m
2026-07-20 DAL2911 BOS → MIA Jul 20, 05:55 UTCJul 20, 07:30 UTC1h 35m
2026-07-20 DAL527 SAV → ATL Jul 20, 03:05 UTCJul 20, 03:40 UTC35m
2026-07-20 DAL527 ATL → SAV Jul 20, 01:40 UTCJul 20, 02:15 UTC35m
2026-07-19 DAL1067 SAV → ATL Jul 19, 21:50 UTCJul 19, 22:30 UTC40m
2026-07-19 DAL1067 ATL → SAV Jul 19, 17:40 UTCJul 19, 18:20 UTC40m
2026-07-19 DAL3110 MCI → ATL Jul 19, 13:30 UTCJul 19, 15:00 UTC1h 30m
2026-07-18 DAL1470 BOS → RDU Jul 18, 22:15 UTCJul 18, 23:50 UTC1h 35m
2026-07-18 DAL1470 BOS → RDU Jul 18, 22:13 UTCJul 18, 23:50 UTC1h 37m
2026-07-18 DAL2747 - Jul 18, 18:25 UTCJul 18, 20:05 UTC1h 40m
2026-07-18 DAL2747 MCI → ATL Jul 18, 18:24 UTCJul 18, 20:01 UTC1h 37m
2026-07-18 DAL2747 - Jul 18, 15:45 UTCJul 18, 17:20 UTC1h 35m
2026-07-18 DAL1504 BOS → JAX Jul 18, 12:15 UTCJul 18, 13:30 UTC1h 15m
2026-07-18 DAL1351 - Jul 18, 05:10 UTCJul 18, 06:25 UTC1h 15m
2026-07-18 DAL3059 - Jul 18, 03:15 UTCJul 18, 03:55 UTC40m
2026-07-18 DAL3059 - Jul 18, 01:20 UTCJul 18, 02:00 UTC40m
2026-07-17 DAL1067 SAV → ATL Jul 17, 22:43 UTCJul 17, 23:28 UTC45m
2026-07-17 DAL1067 SAV → ATL Jul 17, 22:45 UTCJul 17, 23:35 UTC50m

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?
No active broadcast right now. Last signal was Jul 25, 23:15 UTC.
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, DAL1067, DAL3091.