Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABC29A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N857NW · AIRBUS A-330-200 · operated by DELTA AIR LINES INC

Hex
ABC29A
Octal
52741232
Decimal
11,256,474
Country
US
Tail
N857NW
Type
A332
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
259
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S ABC29A.

Country allocation

The ICAO 24-bit address ABC29A 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
DAL14 - 18 2026-07-20
DAL1 Delta Air Lines 17 2026-07-24
DAL51 Delta Air Lines 16 2026-07-22
DAL50 Delta Air Lines 16 2026-07-23
DAL2 Delta Air Lines 16 2026-07-24
DAL86 Delta Air Lines 15 2026-07-21
DAL87 - 14 2026-07-20
DAL54 Delta Air Lines 14 2026-07-25
DAL15 Delta Air Lines 13 2026-07-25
DAL107 - 13 2026-07-21
DAL106 Delta Air Lines 13 2026-07-24
DAL55 Delta Air Lines 11 2026-07-25
DAL22 - 9 2026-06-18
DAL292 - 8 2026-07-16
DAL259 - 8 2026-07-16
DAL258 - 8 2026-07-16
DAL23 - 6 2026-06-19
DAL101 - 6 2026-06-30
DAL293 - 5 2026-07-17
DAL991 Delta Air Lines 3 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 DAL55 LOS → ATL Jul 25, 22:35 UTCJul 26, 22:30 UTC23h 56m
2026-07-25 DAL54 ATL → LOS Jul 25, 21:15 UTCJul 26, 14:45 UTC17h 31m
2026-07-25 DAL15 FRA → ATL Jul 25, 09:00 UTCJul 25, 18:15 UTC9h 15m
2026-07-24 DAL106 JFK → FRA Jul 24, 23:16 UTCJul 25, 06:13 UTC6h 57m
2026-07-24 DAL106 JFK → FRA Jul 24, 23:20 UTCJul 25, 00:30 UTC1h 10m
2026-07-24 DAL2 LHR → JFK Jul 24, 11:10 UTCJul 24, 18:10 UTC7h 0m
2026-07-24 DAL1 JFK → LHR Jul 24, 01:35 UTCJul 24, 08:05 UTC6h 30m
2026-07-23 DAL2 LHR → JFK Jul 23, 11:15 UTCJul 23, 18:05 UTC6h 50m
2026-07-23 DAL50 SLC → LHR Jul 23, 00:00 UTCJul 23, 09:00 UTC9h 0m
2026-07-22 DAL51 LHR → SLC Jul 22, 00:35 UTCJul 22, 19:35 UTC19h 0m
2026-07-22 DAL51 LHR → SLC Jul 22, 00:20 UTCJul 22, 19:35 UTC19h 15m
2026-07-21 DAL107 FRA → JFK Jul 21, 10:05 UTCJul 21, 18:15 UTC8h 10m
2026-07-21 DAL86 DTW → FRA Jul 21, 00:00 UTCJul 21, 07:45 UTC7h 45m
2026-07-20 DAL87 FRA → DTW Jul 20, 11:25 UTCJul 20, 19:35 UTC8h 10m
2026-07-20 DAL14 ATL → FRA Jul 20, 00:45 UTCJul 20, 09:10 UTC8h 25m
2026-07-19 DAL15 FRA → ATL Jul 19, 11:45 UTCJul 19, 21:00 UTC9h 15m
2026-07-19 DAL106 JFK → FRA Jul 19, 02:30 UTCJul 19, 09:40 UTC7h 10m
2026-07-18 DAL107 FRA → JFK Jul 18, 10:25 UTCJul 18, 18:45 UTC8h 20m
2026-07-18 DAL86 - Jul 18, 00:04 UTCJul 18, 07:55 UTC7h 51m
2026-07-17 DAL293 DUB → DTW Jul 17, 09:20 UTCJul 17, 16:15 UTC6h 55m
2026-07-16 DAL258 MSP → DUB Jul 16, 23:49 UTCJul 17, 06:50 UTC7h 0m
2026-07-16 DAL258 MSP → DUB Jul 16, 23:50 UTCJul 17, 06:54 UTC7h 4m
2026-07-16 DAL259 DUB → MSP Jul 16, 11:45 UTCJul 16, 19:14 UTC7h 30m
2026-07-16 DAL259 DUB → MSP Jul 16, 11:41 UTCJul 16, 19:06 UTC7h 25m
2026-07-16 DAL292 - Jul 16, 02:20 UTCJul 16, 09:00 UTC6h 40m
2026-07-15 DAL87 FRA → DTW Jul 15, 09:30 UTCJul 15, 17:45 UTC8h 15m
2026-07-14 DAL14 ATL → FRA Jul 14, 22:15 UTCJul 15, 06:50 UTC8h 34m
2026-07-14 DAL15 - Jul 14, 10:35 UTCJul 14, 12:35 UTC2h 0m
2026-07-14 DAL15 FRA → ATL Jul 14, 10:31 UTCJul 14, 19:27 UTC8h 56m
2026-07-14 DAL15 FRA → ATL Jul 14, 10:31 UTCJul 14, 19:36 UTC9h 5m
2026-07-14 DAL86 - Jul 14, 00:05 UTCJul 14, 08:10 UTC8h 5m
2026-07-13 DAL87 FRA → DTW Jul 13, 09:20 UTCJul 13, 17:40 UTC8h 20m
2026-07-12 DAL14 ATL → FRA Jul 12, 22:45 UTCJul 13, 07:10 UTC8h 25m
2026-07-11 DAL9960 - Jul 11, 20:00 UTCJul 11, 21:50 UTC1h 50m
2026-07-11 DAL9960 - Jul 11, 12:20 UTCJul 11, 13:10 UTC50m
2026-07-07 DAL54 - Jul 7, 21:05 UTCJul 8, 05:50 UTC8h 45m
2026-07-06 DAL15 FRA → ATL Jul 6, 11:50 UTCJul 6, 21:20 UTC9h 30m
2026-07-06 DAL14 ATL → FRA Jul 6, 01:37 UTCJul 6, 09:52 UTC8h 15m
2026-07-06 DAL14 - Jul 6, 01:40 UTCJul 6, 04:45 UTC3h 5m
2026-07-05 DAL55 LOS → ATL Jul 5, 10:58 UTCJul 5, 22:21 UTC11h 23m
2026-07-05 DAL55 - Jul 5, 04:55 UTCJul 5, 22:25 UTC17h 30m
2026-07-04 DAL54 - Jul 4, 21:15 UTCJul 5, 14:15 UTC17h 0m
2026-07-03 DAL279 - Jul 3, 09:05 UTCJul 3, 10:30 UTC1h 25m
2026-07-03 DAL279 NAP → ATL Jul 3, 08:55 UTCJul 3, 19:26 UTC10h 31m
2026-07-03 DAL278 - Jul 3, 02:20 UTCJul 3, 05:15 UTC2h 55m
2026-07-02 DAL278 ATL → NAP Jul 2, 20:05 UTCJul 3, 05:24 UTC9h 19m
2026-07-02 DAL278 - Jul 2, 20:05 UTCJul 2, 22:55 UTC2h 50m
2026-06-30 DAL110 - Jun 30, 23:25 UTCJul 1, 09:20 UTC9h 55m
2026-06-30 DAL101 - Jun 30, 13:05 UTCJun 30, 13:20 UTC15m
2026-06-30 DAL101 ATL → EZE Jun 30, 03:12 UTCJun 30, 12:48 UTC9h 36m

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 N857NW page for operator, model, and routing details .

Mode-S ABC29A frequently asked

What is Mode-S code ABC29A?
ABC29A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N857NW.
Where is Mode-S ABC29A registered?
Mode-S code ABC29A 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 ABC29A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABC29A, octal 52741232, decimal 11,256,474.
What flights does ABC29A operate?
Mode-S ABC29A has broadcast 20 distinct callsigns, including DAL14, DAL1, DAL51, DAL50, DAL2.