Apparatus

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sensors Mode-S transponder

AB52A2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N829DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AB52A2
Octal
52651242
Decimal
11,227,810
Country
US
Tail
N829DN
Type
B739
No current signal · last broadcast 27m ago
Flights observed
367
Distinct callsigns
20
Country
US
Last broadcast
27m ago

Last known position

Most recent position reported by Mode-S AB52A2.

Country allocation

The ICAO 24-bit address AB52A2 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
DAL1055 - 8 2026-06-25
DAL532 Delta Air Lines 7 2026-05-22
DAL2427 - 7 2026-07-03
DAL1047 - 7 2026-06-25
DAL2545 - 5 2026-07-02
DAL2208 - 5 2026-06-23
DAL3129 - 4 2026-06-18
DAL2738 Delta Air Lines 4 2026-04-18
DAL2165 Delta Air Lines 4 2026-05-24
DAL1701 - 4 2026-06-21
DAL1514 Delta Air Lines 4 2026-04-16
DAL1400 - 4 2026-07-07
DAL3104 - 3 2026-06-18
DAL3021 - 3 2026-06-18
DAL2925 Delta Air Lines 3 2026-05-26
DAL2553 - 3 2026-07-08
DAL2510 Delta Air Lines 3 2026-06-22
DAL2506 Delta Air Lines 3 2026-04-13
DAL2462 Delta Air Lines 3 2026-06-08
DAL2437 - 3 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL2369 - Jul 14, 13:35 UTCJul 14, 14:30 UTC55m
2026-07-13 DAL503 ATL → PDX Jul 13, 22:30 UTCJul 14, 03:00 UTC4h 30m
2026-07-13 DAL1082 - Jul 13, 18:05 UTCJul 13, 20:00 UTC1h 55m
2026-07-13 DAL1082 - Jul 13, 16:00 UTCJul 13, 16:30 UTC30m
2026-07-13 DAL1082 - Jul 13, 14:30 UTCJul 13, 15:55 UTC1h 25m
2026-07-13 DAL1499 - Jul 13, 11:50 UTCJul 13, 13:00 UTC1h 10m
2026-07-13 DAL2997 ATL → SRQ Jul 13, 05:15 UTCJul 13, 06:16 UTC1h 1m
2026-07-13 DAL2997 ATL → SRQ Jul 13, 05:15 UTCJul 13, 06:20 UTC1h 5m
2026-07-13 DAL2786 - Jul 13, 02:05 UTCJul 13, 03:10 UTC1h 5m
2026-07-12 DAL2786 ATL → CMH Jul 12, 23:35 UTCJul 13, 00:45 UTC1h 10m
2026-07-12 DAL3092 VPS → ATL Jul 12, 20:20 UTCJul 12, 21:00 UTC40m
2026-07-12 DAL3092 ATL → VPS Jul 12, 17:20 UTCJul 12, 18:10 UTC50m
2026-07-12 DAL963 - Jul 12, 14:20 UTCJul 12, 15:30 UTC1h 10m
2026-07-12 DAL963 - Jul 12, 11:50 UTCJul 12, 12:45 UTC55m
2026-07-12 DAL924 MSY → ATL Jul 12, 00:50 UTCJul 12, 01:50 UTC1h 0m
2026-07-11 DAL3146 ATL → MSY Jul 11, 20:25 UTCJul 11, 21:35 UTC1h 10m
2026-07-11 DAL1074 COS → ATL Jul 11, 15:30 UTCJul 11, 17:55 UTC2h 25m
2026-07-11 DAL971 ATL → COS Jul 11, 01:25 UTCJul 11, 03:55 UTC2h 30m
2026-07-10 DAL2720 - Jul 10, 22:45 UTCJul 10, 23:30 UTC45m
2026-07-10 DAL2720 - Jul 10, 19:35 UTCJul 10, 20:20 UTC45m
2026-07-10 DAL677 LAS → ATL Jul 10, 14:25 UTCJul 10, 18:00 UTC3h 35m
2026-07-10 DAL2202 - Jul 10, 04:35 UTCJul 10, 05:20 UTC45m
2026-07-09 DAL861 - Jul 9, 23:20 UTCJul 10, 03:15 UTC3h 55m
2026-07-09 DAL861 - Jul 9, 18:45 UTCJul 9, 22:10 UTC3h 25m
2026-07-09 DAL1095 - Jul 9, 15:55 UTCJul 9, 17:20 UTC1h 25m
2026-07-09 DAL1095 SLC → LAX Jul 9, 15:51 UTCJul 9, 17:12 UTC1h 21m
2026-07-09 DAL2906 - Jul 9, 12:45 UTCJul 9, 14:10 UTC1h 25m
2026-07-09 DAL2906 LAX → SLC Jul 9, 12:40 UTCJul 9, 14:07 UTC1h 27m
2026-07-09 DAL2854 - Jul 9, 05:20 UTCJul 9, 05:55 UTC35m
2026-07-09 DAL2854 - Jul 9, 03:50 UTCJul 9, 05:15 UTC1h 25m
2026-07-08 DAL944 - Jul 8, 21:45 UTCJul 9, 02:05 UTC4h 20m
2026-07-08 DAL1519 MSP → DTW Jul 8, 18:10 UTCJul 8, 19:25 UTC1h 15m
2026-07-08 DAL2553 PHX → MSP Jul 8, 13:50 UTCJul 8, 16:20 UTC2h 30m
2026-07-08 DAL2297 - Jul 8, 00:05 UTCJul 8, 02:45 UTC2h 40m
2026-07-07 DAL2825 ATL → MSP Jul 7, 18:40 UTCJul 7, 20:40 UTC2h 0m
2026-07-07 DAL1400 STL → ATL Jul 7, 15:55 UTCJul 7, 17:10 UTC1h 15m
2026-07-07 DAL1400 ATL → STL Jul 7, 13:15 UTCJul 7, 14:35 UTC1h 20m
2026-07-07 DAL3015 - Jul 7, 09:55 UTCJul 7, 10:25 UTC30m
2026-07-07 DAL3072 - Jul 7, 03:15 UTCJul 7, 03:45 UTC30m
2026-07-06 DAL1109 ABQ → ATL Jul 6, 23:00 UTCJul 7, 01:40 UTC2h 40m
2026-07-06 DAL1109 - Jul 6, 21:05 UTCJul 6, 21:20 UTC15m
2026-07-06 DAL1109 - Jul 6, 18:35 UTCJul 6, 20:35 UTC2h 0m
2026-07-06 DAL3164 - Jul 6, 16:00 UTCJul 6, 16:35 UTC35m
2026-07-06 DAL3164 - Jul 6, 14:05 UTCJul 6, 14:30 UTC25m
2026-07-06 DAL1524 - Jul 6, 11:20 UTCJul 6, 12:30 UTC1h 10m
2026-07-06 DAL1524 STL → ATL Jul 6, 11:20 UTCJul 6, 12:27 UTC1h 7m
2026-07-06 DAL2833 ATL → STL Jul 6, 03:35 UTCJul 6, 04:45 UTC1h 10m
2026-07-06 DAL1008 - Jul 6, 00:10 UTCJul 6, 00:30 UTC20m
2026-07-06 DAL1008 CVG → ATL Jul 6, 00:08 UTCJul 6, 01:06 UTC58m
2026-07-05 DAL1008 ATL → CVG Jul 5, 19:55 UTCJul 5, 21:00 UTC1h 5m

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 N829DN page for operator, model, and routing details .

Mode-S AB52A2 frequently asked

What is Mode-S code AB52A2?
AB52A2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N829DN.
Where is Mode-S AB52A2 registered?
Mode-S code AB52A2 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 AB52A2 broadcasting right now?
No active broadcast right now. Last signal was 27m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB52A2, octal 52651242, decimal 11,227,810.
What flights does AB52A2 operate?
Mode-S AB52A2 has broadcast 20 distinct callsigns, including DAL1055, DAL532, DAL2427, DAL1047, DAL2545.