Apparatus

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sensors Mode-S transponder

AD2EA9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N949AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
AD2EA9
Octal
53227251
Decimal
11,349,673
Country
US
Tail
N949AT
Type
B712
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
723
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S AD2EA9.

Country allocation

The ICAO 24-bit address AD2EA9 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
DAL2973 Delta Air Lines 13 2026-06-06
DAL2968 - 10 2026-06-29
DAL1716 - 10 2026-07-14
DAL2826 Delta Air Lines 9 2026-07-19
DAL2761 Delta Air Lines 9 2026-06-10
DAL3063 Delta Air Lines 8 2026-05-27
DAL3047 Delta Air Lines 8 2026-05-29
DAL3032 Delta Air Lines 8 2026-07-20
DAL2480 - 8 2026-07-12
DAL1640 Delta Air Lines 8 2026-06-07
DAL3199 Delta Air Lines 7 2026-05-27
DAL3050 Delta Air Lines 7 2026-07-25
DAL2730 - 7 2026-07-15
DAL2684 - 7 2026-07-04
DAL2577 - 7 2026-06-28
DAL1256 - 7 2026-07-12
DAL3068 - 6 2026-06-20
DAL3052 Delta Air Lines 6 2026-07-23
DAL2884 - 6 2026-07-20
DAL2814 - 6 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL3014 ATL → BHM Jul 26, 21:15 UTCJul 26, 21:55 UTC40m
2026-07-26 DAL3014 ATL → BHM Jul 26, 19:15 UTCJul 26, 19:55 UTC40m
2026-07-26 DAL2681 MSN → ATL Jul 26, 16:15 UTCJul 26, 17:55 UTC1h 40m
2026-07-26 DAL2681 MSN → ATL Jul 26, 13:35 UTCJul 26, 15:15 UTC1h 40m
2026-07-25 DAL2857 MSP → ORD Jul 25, 22:50 UTCJul 26, 00:20 UTC1h 30m
2026-07-25 DAL2857 MSP → ORD Jul 25, 22:48 UTCJul 26, 00:20 UTC1h 32m
2026-07-25 DAL2857 MSP → ORD Jul 25, 20:05 UTCJul 25, 21:35 UTC1h 30m
2026-07-25 DAL1481 SAN → SEA Jul 25, 17:40 UTCJul 25, 18:40 UTC1h 0m
2026-07-25 DAL1481 SAN → SEA Jul 25, 15:35 UTCJul 25, 16:30 UTC55m
2026-07-25 DAL1727 ATL → PVD Jul 25, 12:25 UTCJul 25, 13:10 UTC45m
2026-07-25 DAL1569 SEA → LAX Jul 25, 02:00 UTCJul 25, 02:35 UTC35m
2026-07-25 DAL3050 ATL → GSO Jul 25, 00:00 UTCJul 25, 00:50 UTC50m
2026-07-24 DAL3050 ATL → GSO Jul 24, 21:55 UTCJul 24, 22:40 UTC45m
2026-07-24 DAL2179 SFO → SLC Jul 24, 19:45 UTCJul 24, 20:30 UTC45m
2026-07-24 DAL2179 SFO → SLC Jul 24, 16:45 UTCJul 24, 17:30 UTC45m
2026-07-24 DAL1149 DTW → PBI Jul 24, 14:40 UTCJul 24, 15:40 UTC1h 0m
2026-07-24 DAL1149 DTW → PBI Jul 24, 14:38 UTCJul 24, 15:35 UTC57m
2026-07-24 DAL2001 ATL → CMH Jul 24, 00:40 UTCJul 24, 01:25 UTC45m
2026-07-23 DAL3027 ATL → LIT Jul 23, 21:10 UTCJul 23, 22:20 UTC1h 10m
2026-07-23 DAL3027 ATL → LIT Jul 23, 19:00 UTCJul 23, 19:55 UTC55m
2026-07-23 DAL3052 GSO → ATL Jul 23, 17:05 UTCJul 23, 18:00 UTC55m
2026-07-23 DAL3052 GSO → ATL Jul 23, 14:55 UTCJul 23, 15:55 UTC1h 0m
2026-07-23 DAL2216 DTW → SFO Jul 23, 10:45 UTCJul 23, 12:30 UTC1h 45m
2026-07-23 DAL2216 DTW → SFO Jul 23, 10:41 UTCJul 23, 12:21 UTC1h 40m
2026-07-23 DAL2959 ATL → ICT Jul 23, 00:55 UTCJul 23, 02:40 UTC1h 45m
2026-07-22 DAL3083 VPS → ATL Jul 22, 22:30 UTCJul 22, 23:15 UTC45m
2026-07-22 DAL3083 VPS → ATL Jul 22, 20:45 UTCJul 22, 21:25 UTC40m
2026-07-22 DAL2044 ATL → BDL Jul 22, 17:40 UTCJul 22, 19:35 UTC1h 55m
2026-07-22 DAL2044 ATL → BDL Jul 22, 14:05 UTCJul 22, 16:00 UTC1h 55m
2026-07-22 DAL2727 - Jul 22, 11:10 UTCJul 22, 12:25 UTC1h 15m
2026-07-22 DAL2306 ATL → DSM Jul 22, 01:25 UTCJul 22, 03:15 UTC1h 50m
2026-07-21 DAL3050 ATL → GSO Jul 21, 22:50 UTCJul 21, 23:40 UTC50m
2026-07-21 DAL3050 ATL → GSO Jul 21, 22:49 UTCJul 21, 23:45 UTC56m
2026-07-21 DAL3050 ATL → GSO Jul 21, 20:40 UTCJul 21, 21:30 UTC50m
2026-07-21 DAL2417 MSY → MSP Jul 21, 17:50 UTCJul 21, 19:10 UTC1h 20m
2026-07-21 DAL2417 MSY → MSP Jul 21, 15:10 UTCJul 21, 16:40 UTC1h 30m
2026-07-21 DAL2116 TPA → LGA Jul 21, 12:15 UTCJul 21, 12:55 UTC40m
2026-07-20 DAL2241 - Jul 20, 23:40 UTCJul 21, 00:20 UTC40m
2026-07-20 DAL2241 ATL → TLH Jul 20, 23:39 UTCJul 21, 00:19 UTC40m
2026-07-20 DAL3032 ATL → CAE Jul 20, 21:05 UTCJul 20, 21:45 UTC40m
2026-07-20 DAL3032 ATL → CAE Jul 20, 21:02 UTCJul 20, 21:43 UTC41m
2026-07-20 DAL1429 BOS → RSW Jul 20, 18:20 UTCJul 20, 19:40 UTC1h 20m
2026-07-20 DAL1429 BOS → RSW Jul 20, 18:15 UTCJul 20, 19:23 UTC1h 8m
2026-07-20 DAL2884 IAD → DTW Jul 20, 15:10 UTCJul 20, 16:10 UTC1h 0m
2026-07-20 DAL2884 IAD → DTW Jul 20, 15:08 UTCJul 20, 16:07 UTC59m
2026-07-20 DAL2884 - Jul 20, 13:05 UTCJul 20, 14:05 UTC1h 0m
2026-07-20 DAL1079 - Jul 20, 10:10 UTCJul 20, 11:35 UTC1h 25m
2026-07-20 DAL1079 ORF → DTW Jul 20, 10:09 UTCJul 20, 11:31 UTC1h 22m
2026-07-20 DAL412 - Jul 20, 01:50 UTCJul 20, 03:10 UTC1h 20m
2026-07-19 DAL2822 - Jul 19, 23:10 UTCJul 20, 00:20 UTC1h 10m

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 N949AT page for operator, model, and routing details .

Mode-S AD2EA9 frequently asked

What is Mode-S code AD2EA9?
AD2EA9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N949AT.
Where is Mode-S AD2EA9 registered?
Mode-S code AD2EA9 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 AD2EA9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD2EA9, octal 53227251, decimal 11,349,673.
What flights does AD2EA9 operate?
Mode-S AD2EA9 has broadcast 20 distinct callsigns, including DAL2973, DAL2968, DAL1716, DAL2826, DAL2761.