Apparatus

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sensors Mode-S transponder

A0669D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N125DN · AIRBUS A-321 · operated by DELTA AIR LINES INC

Hex
A0669D
Octal
50063235
Decimal
10,512,029
Country
US
Tail
N125DN
Type
A321
Broadcasting now · callsign DAL997 · 37,000 ft
Flights observed
480
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A0669D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0669D 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
DAL1580 Delta Air Lines 7 2026-06-12
DAL2849 - 6 2026-06-21
DAL2732 Delta Air Lines 6 2026-07-04
DAL2589 - 6 2026-07-14
DAL2540 - 6 2026-07-13
DAL957 Delta Air Lines 5 2026-06-18
DAL2877 Delta Air Lines 5 2026-06-04
DAL2848 Delta Air Lines 5 2026-05-25
DAL2770 Delta Air Lines 5 2026-04-14
DAL2564 - 5 2026-07-13
DAL2546 Delta Air Lines 5 2026-05-03
DAL2520 Delta Air Lines 5 2026-06-03
DAL2465 Delta Air Lines 5 2026-06-03
DAL2321 - 5 2026-06-24
DAL2191 - 5 2026-07-11
DAL2125 Delta Air Lines 5 2026-06-11
DAL1177 Delta Air Lines 5 2026-05-28
DAL1113 Delta Air Lines 5 2026-05-18
DAL992 Delta Air Lines 4 2026-06-15
DAL973 Delta Air Lines 4 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL994 LGA → ATL Jul 14, 17:55 UTCJul 14, 19:40 UTC1h 45m
2026-07-14 DAL2589 - Jul 14, 14:30 UTCJul 14, 15:45 UTC1h 15m
2026-07-14 DAL1201 MCO → DTW Jul 14, 10:10 UTCJul 14, 12:15 UTC2h 5m
2026-07-13 DAL2561 LGA → MCO Jul 13, 22:40 UTCJul 14, 00:55 UTC2h 15m
2026-07-13 DAL1362 MCO → LGA Jul 13, 18:45 UTCJul 13, 21:00 UTC2h 15m
2026-07-13 DAL1362 MCO → LGA Jul 13, 18:45 UTCJul 13, 20:59 UTC2h 14m
2026-07-13 DAL2019 JFK → MCO Jul 13, 15:15 UTCJul 13, 17:20 UTC2h 5m
2026-07-13 DAL2702 MCO → JFK Jul 13, 11:30 UTCJul 13, 13:40 UTC2h 10m
2026-07-13 DAL2540 LGA → MCO Jul 13, 04:55 UTCJul 13, 06:55 UTC2h 0m
2026-07-13 DAL2564 MCO → LGA Jul 13, 01:05 UTCJul 13, 03:40 UTC2h 35m
2026-07-12 DAL2564 TPA → MCO Jul 12, 20:36 UTCJul 12, 21:03 UTC27m
2026-07-12 DAL2564 LGA → TPA Jul 12, 16:10 UTCJul 12, 19:25 UTC3h 15m
2026-07-12 DAL2719 MSP → LGA Jul 12, 12:10 UTCJul 12, 14:20 UTC2h 10m
2026-07-12 DAL2719 MSP → LGA Jul 12, 12:10 UTCJul 12, 14:18 UTC2h 8m
2026-07-11 DAL2191 - Jul 11, 22:30 UTCJul 12, 01:40 UTC3h 10m
2026-07-11 DAL2191 SAN → MSP Jul 11, 22:28 UTCJul 12, 01:36 UTC3h 8m
2026-07-11 DAL2155 - Jul 11, 17:20 UTCJul 11, 21:15 UTC3h 55m
2026-07-11 DAL1745 DEN → DTW Jul 11, 13:25 UTCJul 11, 15:55 UTC2h 30m
2026-07-11 DAL746 ATL → DEN Jul 11, 02:35 UTCJul 11, 05:55 UTC3h 20m
2026-07-11 DAL746 ATL → DEN Jul 11, 02:32 UTCJul 11, 05:56 UTC3h 24m
2026-07-10 DAL1467 - Jul 10, 22:40 UTCJul 11, 00:10 UTC1h 30m
2026-07-10 DAL1122 LGA → DTW Jul 10, 19:25 UTCJul 10, 20:50 UTC1h 25m
2026-07-10 DAL2589 - Jul 10, 16:55 UTCJul 10, 17:05 UTC10m
2026-07-10 DAL2589 - Jul 10, 16:00 UTCJul 10, 16:50 UTC50m
2026-07-10 DAL2589 DTW → LGA Jul 10, 15:58 UTCJul 10, 17:03 UTC1h 5m
2026-07-09 DAL1427 CVG → BOS Jul 9, 14:05 UTCJul 9, 15:15 UTC1h 10m
2026-07-09 DAL1427 CVG → BOS Jul 9, 11:20 UTCJul 9, 12:30 UTC1h 10m
2026-07-09 DAL1232 ATL → DTW Jul 9, 00:49 UTCJul 9, 02:12 UTC1h 23m
2026-07-09 DAL1232 ATL → DTW Jul 9, 00:50 UTCJul 9, 02:15 UTC1h 25m
2026-07-08 DAL969 LGA → ATL Jul 8, 20:35 UTCJul 8, 22:23 UTC1h 48m
2026-07-08 DAL969 LGA → ATL Jul 8, 20:35 UTCJul 8, 22:25 UTC1h 50m
2026-07-08 DAL525 ATL → LGA Jul 8, 16:40 UTCJul 8, 18:25 UTC1h 45m
2026-07-08 DAL1763 - Jul 8, 13:35 UTCJul 8, 15:10 UTC1h 35m
2026-07-08 DAL1763 - Jul 8, 11:50 UTCJul 8, 12:00 UTC10m
2026-07-08 DAL1763 SJU → ATL Jul 8, 11:46 UTCJul 8, 15:07 UTC3h 21m
2026-07-08 DAL1861 - Jul 8, 02:00 UTCJul 8, 02:10 UTC10m
2026-07-07 DAL1861 - Jul 7, 22:55 UTCJul 8, 00:30 UTC1h 35m
2026-07-07 DAL835 LGA → RSW Jul 7, 17:52 UTCJul 7, 21:09 UTC3h 17m
2026-07-07 DAL835 LGA → RSW Jul 7, 17:55 UTCJul 7, 21:15 UTC3h 20m
2026-07-07 DAL1331 SFO → SLC Jul 7, 13:05 UTCJul 7, 14:25 UTC1h 20m
2026-07-07 DAL1091 SLC → SFO Jul 7, 05:50 UTCJul 7, 07:35 UTC1h 45m
2026-07-07 DAL2663 DEN → SLC Jul 7, 01:20 UTCJul 7, 02:30 UTC1h 10m
2026-07-06 DAL519 BOS → LAX Jul 6, 21:05 UTCJul 7, 00:00 UTC2h 55m
2026-07-06 DAL1179 - Jul 6, 15:40 UTCJul 6, 19:15 UTC3h 35m
2026-07-06 DAL1179 SAN → ATL Jul 6, 15:39 UTCJul 6, 19:32 UTC3h 53m
2026-07-05 DAL2155 - Jul 5, 17:00 UTCJul 5, 21:10 UTC4h 10m
2026-07-05 DAL1078 - Jul 5, 13:50 UTCJul 5, 15:10 UTC1h 20m
2026-07-05 DAL1487 - Jul 5, 11:20 UTCJul 5, 12:30 UTC1h 10m
2026-07-04 DAL2732 ATL → STL Jul 4, 21:20 UTCJul 4, 23:35 UTC2h 15m
2026-07-04 DAL2015 - Jul 4, 17:15 UTCJul 4, 19:15 UTC2h 0m

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 N125DN page for operator, model, and routing details .

Mode-S A0669D frequently asked

What is Mode-S code A0669D?
A0669D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N125DN.
Where is Mode-S A0669D registered?
Mode-S code A0669D 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 A0669D broadcasting right now?
Yes. Mode-S A0669D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0669D, octal 50063235, decimal 10,512,029.
What flights does A0669D operate?
Mode-S A0669D has broadcast 20 distinct callsigns, including DAL1580, DAL2849, DAL2732, DAL2589, DAL2540.