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
Broadcasting now · callsign DAL2711 · 23,600 ft
Flights observed
429
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Current position

AB52A2 is currently broadcasting. Map zoomed to live position.

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
DAL2545 Delta Air Lines 7 2026-07-26
DAL2427 - 7 2026-07-03
DAL1047 - 7 2026-06-25
DAL3104 Delta Air Lines 5 2026-07-25
DAL2437 - 5 2026-07-14
DAL2428 - 5 2026-07-21
DAL2208 - 5 2026-06-23
DAL2165 Delta Air Lines 5 2026-07-22
DAL1437 Delta Air Lines 5 2026-07-23
DAL3129 - 4 2026-06-18
DAL3109 Delta Air Lines 4 2026-07-25
DAL2738 Delta Air Lines 4 2026-04-18
DAL2323 Delta Air Lines 4 2026-07-22
DAL1701 - 4 2026-06-21
DAL1514 Delta Air Lines 4 2026-04-16
DAL1400 - 4 2026-07-07
DAL924 - 3 2026-07-19
DAL3146 Delta Air Lines 3 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2545 RDU → BOS Jul 26, 20:45 UTCJul 26, 21:55 UTC1h 10m
2026-07-26 DAL2545 RDU → BOS Jul 26, 17:45 UTCJul 26, 19:05 UTC1h 20m
2026-07-26 DAL2856 FLL → CVG Jul 26, 14:45 UTCJul 26, 16:15 UTC1h 30m
2026-07-26 DAL1646 EWR → ATL Jul 26, 11:15 UTCJul 26, 12:50 UTC1h 35m
2026-07-25 DAL1267 MCO → BOS Jul 25, 23:00 UTCJul 26, 00:20 UTC1h 20m
2026-07-25 DAL1267 MCO → BOS Jul 25, 20:05 UTCJul 25, 21:35 UTC1h 30m
2026-07-25 DAL3104 SRQ → ATL Jul 25, 17:05 UTCJul 25, 18:15 UTC1h 10m
2026-07-25 DAL3104 SRQ → ATL Jul 25, 14:35 UTCJul 25, 15:45 UTC1h 10m
2026-07-25 DAL3109 ATL → SRQ Jul 25, 03:30 UTCJul 25, 04:30 UTC1h 0m
2026-07-25 DAL3109 ATL → SRQ Jul 25, 03:25 UTCJul 25, 04:41 UTC1h 16m
2026-07-25 DAL3109 ATL → SRQ Jul 25, 02:20 UTCJul 25, 02:40 UTC20m
2026-07-24 DAL3109 ATL → SRQ Jul 24, 21:10 UTCJul 24, 23:05 UTC1h 55m
2026-07-24 DAL2978 MSP → YYC Jul 24, 17:30 UTCJul 24, 19:20 UTC1h 50m
2026-07-24 DAL2978 MSP → YYC Jul 24, 17:28 UTCJul 24, 19:22 UTC1h 54m
2026-07-24 DAL2978 MSP → YYC Jul 24, 14:50 UTCJul 24, 16:05 UTC1h 15m
2026-07-24 DAL2299 IAH → DTW Jul 24, 12:25 UTCJul 24, 13:25 UTC1h 0m
2026-07-23 DAL2831 ATL → SDF Jul 23, 22:15 UTCJul 23, 23:05 UTC50m
2026-07-23 DAL1437 BOS → ATL Jul 23, 19:20 UTCJul 23, 20:35 UTC1h 15m
2026-07-23 DAL1437 BOS → ATL Jul 23, 16:40 UTCJul 23, 17:45 UTC1h 5m
2026-07-23 DAL1523 SLC → SJC Jul 23, 14:15 UTCJul 23, 15:15 UTC1h 0m
2026-07-23 DAL1523 SLC → SJC Jul 23, 11:55 UTCJul 23, 12:50 UTC55m
2026-07-23 DAL962 ATL → EWR Jul 23, 03:40 UTCJul 23, 05:30 UTC1h 50m
2026-07-22 DAL2323 BOS → JAX Jul 22, 21:45 UTCJul 23, 01:00 UTC3h 15m
2026-07-22 DAL2323 BOS → JAX Jul 22, 16:00 UTCJul 22, 19:20 UTC3h 20m
2026-07-22 DAL2165 MIA → BOS Jul 22, 11:20 UTCJul 22, 13:40 UTC2h 20m
2026-07-21 DAL305 HNL → JFK Jul 21, 16:50 UTCJul 21, 19:25 UTC2h 35m
2026-07-21 DAL2428 - Jul 21, 11:25 UTCJul 21, 13:50 UTC2h 25m
2026-07-21 DAL2428 MIA → JFK Jul 21, 11:21 UTCJul 21, 13:46 UTC2h 25m
2026-07-21 DAL2187 JFK → MCO Jul 21, 00:25 UTCJul 21, 03:35 UTC3h 10m
2026-07-20 DAL2483 SJC → SLC Jul 20, 19:30 UTCJul 20, 22:10 UTC2h 40m
2026-07-20 DAL2482 BOS → CVG Jul 20, 14:40 UTCJul 20, 18:10 UTC3h 30m
2026-07-20 DAL2757 - Jul 20, 11:10 UTCJul 20, 12:50 UTC1h 40m
2026-07-20 DAL2757 IND → MSP Jul 20, 11:10 UTCJul 20, 12:53 UTC1h 43m
2026-07-20 DAL2979 JFK → ATL Jul 20, 01:10 UTCJul 20, 02:30 UTC1h 20m
2026-07-19 DAL2747 - Jul 19, 20:40 UTCJul 19, 22:55 UTC2h 15m
2026-07-19 DAL2747 - Jul 19, 15:25 UTCJul 19, 16:55 UTC1h 30m
2026-07-19 DAL690 BOS → MSP Jul 19, 09:10 UTCJul 19, 13:30 UTC4h 20m
2026-07-19 DAL545 LAX → SFO Jul 19, 03:40 UTCJul 19, 07:50 UTC4h 10m
2026-07-19 DAL545 LAX → SFO Jul 19, 03:40 UTCJul 19, 07:58 UTC4h 18m
2026-07-19 DAL924 - Jul 19, 00:10 UTCJul 19, 01:15 UTC1h 5m
2026-07-19 DAL924 MSY → ATL Jul 19, 00:07 UTCJul 19, 01:10 UTC1h 3m
2026-07-18 DAL3146 ATL → MSY Jul 18, 19:40 UTCJul 18, 20:50 UTC1h 10m
2026-07-18 DAL3146 ATL → MSY Jul 18, 19:39 UTCJul 18, 20:49 UTC1h 10m
2026-07-18 DAL677 LAS → ATL Jul 18, 14:20 UTCJul 18, 18:05 UTC3h 45m
2026-07-18 DAL2202 LAX → LAS Jul 18, 06:35 UTCJul 18, 07:25 UTC50m
2026-07-18 DAL2202 LAX → LAS Jul 18, 06:35 UTCJul 18, 07:17 UTC42m
2026-07-18 DAL1161 SLC → LAX Jul 18, 03:50 UTCJul 18, 05:15 UTC1h 25m
2026-07-17 DAL1423 SMF → SLC Jul 17, 20:44 UTCJul 17, 22:00 UTC1h 15m
2026-07-17 DAL1423 SLC → SMF Jul 17, 18:00 UTCJul 17, 19:15 UTC1h 15m
2026-07-17 DAL698 ARB → SLC Jul 17, 12:50 UTCJul 17, 15:55 UTC3h 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?
Yes. Mode-S AB52A2 is currently airborne.
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, DAL2545, DAL2427, DAL1047.