Apparatus

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sensors Mode-S transponder

AB4EEB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N828DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AB4EEB
Octal
52647353
Decimal
11,226,859
Country
US
Tail
N828DN
Type
B739
Broadcasting now · callsign DAL3132 · 50 ft
Flights observed
471
Distinct callsigns
20
Country
US
Last broadcast
9m ago

Current position

AB4EEB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AB4EEB 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
DAL1757 Delta Air Lines 9 2026-05-26
DAL1244 - 7 2026-06-20
DAL517 - 6 2026-06-16
DAL2634 - 5 2026-07-12
DAL2342 - 5 2026-07-09
DAL2129 - 5 2026-06-25
DAL1542 - 5 2026-04-13
DAL1514 Delta Air Lines 5 2026-04-29
DAL1443 - 5 2026-06-28
DAL1437 - 5 2026-07-05
DAL772 Delta Air Lines 4 2026-04-20
DAL532 Delta Air Lines 4 2026-04-28
DAL3074 Delta Air Lines 4 2026-05-26
DAL2738 - 4 2026-07-09
DAL2439 - 4 2026-06-19
DAL2401 Delta Air Lines 4 2026-04-15
DAL1913 Delta Air Lines 4 2026-05-31
DAL1759 Delta Air Lines 4 2026-05-15
DAL1414 Delta Air Lines 4 2026-04-29
DAL1251 - 4 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL3132 - Jul 14, 21:45 UTCJul 14, 22:45 UTC59m
2026-07-14 DAL2711 - Jul 14, 18:20 UTCJul 14, 19:50 UTC1h 30m
2026-07-14 DAL2711 ATL → BWI Jul 14, 15:20 UTCJul 14, 16:50 UTC1h 30m
2026-07-14 DAL3076 - Jul 14, 12:30 UTCJul 14, 13:30 UTC1h 0m
2026-07-14 DAL2248 ATL → CVG Jul 14, 00:43 UTCJul 14, 01:35 UTC52m
2026-07-14 DAL2248 - Jul 14, 00:45 UTCJul 14, 01:35 UTC50m
2026-07-13 DAL2545 - Jul 13, 20:50 UTCJul 13, 22:10 UTC1h 20m
2026-07-13 DAL2545 ATL → CLE Jul 13, 17:45 UTCJul 13, 19:05 UTC1h 20m
2026-07-13 DAL1380 - Jul 13, 14:35 UTCJul 13, 15:50 UTC1h 15m
2026-07-13 DAL1380 ATL → PIT Jul 13, 11:40 UTCJul 13, 12:50 UTC1h 10m
2026-07-12 DAL560 SEA → ATL Jul 12, 23:20 UTCJul 13, 03:40 UTC4h 20m
2026-07-12 DAL560 SEA → ATL Jul 12, 23:19 UTCJul 13, 03:31 UTC4h 12m
2026-07-12 DAL629 ATL → SEA Jul 12, 16:55 UTCJul 12, 21:25 UTC4h 30m
2026-07-12 DAL2634 - Jul 12, 14:10 UTCJul 12, 15:05 UTC55m
2026-07-12 DAL2634 ATL → RDU Jul 12, 11:35 UTCJul 12, 12:35 UTC1h 0m
2026-07-11 DAL787 - Jul 11, 20:00 UTCJul 12, 00:01 UTC4h 0m
2026-07-11 DAL787 ATL → GEG Jul 11, 14:10 UTCJul 11, 18:25 UTC4h 15m
2026-07-11 DAL2909 LCK → ATL Jul 11, 11:25 UTCJul 11, 12:35 UTC1h 10m
2026-07-11 DAL1545 ATL → CMH Jul 11, 00:25 UTCJul 11, 01:35 UTC1h 10m
2026-07-10 DAL1800 MBJ → ATL Jul 10, 19:38 UTCJul 10, 22:32 UTC2h 54m
2026-07-10 DAL1800 ATL → ATL Jul 10, 15:25 UTCJul 10, 22:35 UTC7h 10m
2026-07-10 DAL2451 - Jul 10, 12:15 UTCJul 10, 12:55 UTC40m
2026-07-10 DAL3097 - Jul 10, 04:15 UTCJul 10, 05:00 UTC45m
2026-07-10 DAL3097 ATL → VPS Jul 10, 04:15 UTCJul 10, 05:00 UTC45m
2026-07-10 DAL2740 - Jul 10, 01:30 UTCJul 10, 03:00 UTC1h 30m
2026-07-09 DAL2738 ATL → ORD Jul 9, 22:30 UTCJul 10, 00:14 UTC1h 44m
2026-07-09 DAL2738 ATL → ORD Jul 9, 22:30 UTCJul 9, 23:55 UTC1h 25m
2026-07-09 DAL2342 JFK → ATL Jul 9, 17:30 UTCJul 9, 19:35 UTC2h 5m
2026-07-09 DAL1034 ATL → JFK Jul 9, 14:00 UTCJul 9, 15:40 UTC1h 40m
2026-07-09 DAL2933 - Jul 9, 10:15 UTCJul 9, 12:15 UTC2h 0m
2026-07-09 DAL1011 ATL → BDL Jul 9, 01:45 UTCJul 9, 03:40 UTC1h 55m
2026-07-09 DAL1011 ATL → BDL Jul 9, 01:41 UTCJul 9, 03:34 UTC1h 53m
2026-07-08 DAL3109 - Jul 8, 22:25 UTCJul 8, 23:35 UTC1h 10m
2026-07-08 DAL3109 ATL → SRQ Jul 8, 19:50 UTCJul 8, 21:00 UTC1h 10m
2026-07-08 DAL662 - Jul 8, 13:50 UTCJul 8, 18:00 UTC4h 10m
2026-07-07 DAL503 BOS → ATL Jul 7, 22:05 UTCJul 8, 02:40 UTC4h 35m
2026-07-07 DAL2020 - Jul 7, 18:25 UTCJul 7, 20:10 UTC1h 45m
2026-07-07 DAL2020 ATL → OKC Jul 7, 15:20 UTCJul 7, 17:00 UTC1h 40m
2026-07-07 DAL3165 - Jul 7, 12:25 UTCJul 7, 13:30 UTC1h 5m
2026-07-06 DAL2786 ATL → CMH Jul 6, 22:10 UTCJul 6, 23:20 UTC1h 10m
2026-07-06 DAL2925 ORF → ATL Jul 6, 19:20 UTCJul 6, 20:35 UTC1h 15m
2026-07-06 DAL2925 ORF → ATL Jul 6, 19:17 UTCJul 6, 20:32 UTC1h 15m
2026-07-06 DAL2925 ATL → ORF Jul 6, 16:35 UTCJul 6, 17:50 UTC1h 15m
2026-07-06 DAL2299 - Jul 6, 14:20 UTCJul 6, 15:20 UTC1h 0m
2026-07-06 DAL2831 - Jul 6, 02:25 UTCJul 6, 03:15 UTC50m
2026-07-05 DAL1437 - Jul 5, 19:40 UTCJul 5, 20:55 UTC1h 15m
2026-07-05 DAL1437 ATL → RIC Jul 5, 16:55 UTCJul 5, 18:05 UTC1h 10m
2026-07-05 DAL1523 - Jul 5, 14:25 UTCJul 5, 15:25 UTC1h 0m
2026-07-05 DAL1523 - Jul 5, 12:25 UTCJul 5, 13:15 UTC50m
2026-07-04 DAL3152 SDF → ATL Jul 4, 21:55 UTCJul 4, 23:50 UTC1h 55m

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 N828DN page for operator, model, and routing details .

Mode-S AB4EEB frequently asked

What is Mode-S code AB4EEB?
AB4EEB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N828DN.
Where is Mode-S AB4EEB registered?
Mode-S code AB4EEB 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 AB4EEB broadcasting right now?
Yes. Mode-S AB4EEB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB4EEB, octal 52647353, decimal 11,226,859.
What flights does AB4EEB operate?
Mode-S AB4EEB has broadcast 20 distinct callsigns, including DAL1757, DAL1244, DAL517, DAL2634, DAL2342.