Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB35D3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N821NW · AIRBUS A-330-300 · operated by DELTA AIR LINES INC

Hex
AB35D3
Octal
52632723
Decimal
11,220,435
Country
US
Tail
N821NW
Type
A333
No current signal · last broadcast 2h ago
Flights observed
288
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AB35D3.

Country allocation

The ICAO 24-bit address AB35D3 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
DAL231 - 12 2026-07-10
DAL97 Delta Air Lines 11 2026-04-26
DAL128 Delta Air Lines 11 2026-06-30
DAL127 - 10 2026-07-12
DAL182 - 9 2026-07-12
DAL98 Delta Air Lines 8 2026-04-26
DAL73 Delta Air Lines 8 2026-06-04
DAL353 - 8 2026-07-13
DAL183 - 8 2026-07-13
DAL134 Delta Air Lines 8 2026-04-27
DAL75 Delta Air Lines 7 2026-06-05
DAL266 Delta Air Lines 7 2026-04-26
DAL236 Delta Air Lines 7 2026-05-30
DAL230 - 7 2026-07-10
DAL129 Delta Air Lines 7 2026-07-01
DAL46 - 6 2026-07-05
DAL250 - 6 2026-07-08
DAL229 Delta Air Lines 6 2026-04-27
DAL203 - 6 2026-07-05
DAL958 - 5 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL353 - Jul 13, 20:45 UTCJul 14, 00:45 UTC4h 0m
2026-07-13 DAL183 - Jul 13, 08:45 UTCJul 13, 17:25 UTC8h 40m
2026-07-12 DAL182 - Jul 12, 21:55 UTCJul 13, 05:50 UTC7h 55m
2026-07-12 DAL127 MAD → JFK Jul 12, 11:10 UTCJul 12, 18:25 UTC7h 15m
2026-07-12 DAL127 MAD → JFK Jul 12, 11:06 UTCJul 12, 18:22 UTC7h 16m
2026-07-12 DAL126 JFK → MAD Jul 12, 01:35 UTCJul 12, 08:45 UTC7h 10m
2026-07-11 DAL185 MXP → JFK Jul 11, 13:30 UTCJul 11, 21:45 UTC8h 15m
2026-07-11 DAL184 JFK → MXP Jul 11, 03:05 UTCJul 11, 10:25 UTC7h 20m
2026-07-10 DAL231 - Jul 10, 12:05 UTCJul 10, 20:45 UTC8h 40m
2026-07-10 DAL231 FCO → JFK Jul 10, 12:04 UTCJul 10, 20:43 UTC8h 39m
2026-07-10 DAL230 - Jul 10, 01:35 UTCJul 10, 06:45 UTC5h 10m
2026-07-10 DAL230 JFK → FCO Jul 10, 01:34 UTCJul 10, 09:22 UTC7h 48m
2026-07-09 DAL49 AMS → JFK Jul 9, 13:15 UTCJul 9, 14:55 UTC1h 40m
2026-07-09 DAL49 AMS → JFK Jul 9, 13:11 UTCJul 9, 20:47 UTC7h 36m
2026-07-09 DAL49 AMS → JFK Jul 9, 13:11 UTCJul 9, 20:50 UTC7h 39m
2026-07-09 DAL144 SEA → AMS Jul 9, 00:55 UTCJul 9, 10:15 UTC9h 20m
2026-07-08 DAL249 - Jul 8, 11:40 UTCJul 8, 18:45 UTC7h 5m
2026-07-08 DAL249 BCN → SEA Jul 8, 11:40 UTCJul 8, 22:14 UTC10h 34m
2026-07-08 DAL250 BOS → BCN Jul 8, 00:52 UTCJul 8, 07:34 UTC6h 42m
2026-07-08 DAL250 - Jul 8, 00:55 UTCJul 8, 07:45 UTC6h 50m
2026-07-07 DAL113 FCO → BOS Jul 7, 11:45 UTCJul 7, 20:05 UTC8h 20m
2026-07-07 DAL206 - Jul 7, 00:25 UTCJul 7, 08:50 UTC8h 25m
2026-07-06 DAL135 AMS → DTW Jul 6, 09:25 UTCJul 6, 17:30 UTC8h 5m
2026-07-05 DAL46 JFK → AMS Jul 5, 22:48 UTCJul 6, 05:14 UTC6h 26m
2026-07-05 DAL46 - Jul 5, 22:50 UTCJul 6, 05:15 UTC6h 25m
2026-07-05 DAL203 ATH → JFK Jul 5, 07:20 UTCJul 5, 17:30 UTC10h 10m
2026-07-04 DAL202 JFK → ATH Jul 4, 19:40 UTCJul 5, 04:20 UTC8h 40m
2026-07-04 DAL47 AMS → JFK Jul 4, 08:55 UTCJul 4, 17:10 UTC8h 15m
2026-07-03 DAL46 - Jul 3, 22:50 UTCJul 4, 00:30 UTC1h 40m
2026-07-03 DAL46 JFK → AMS Jul 3, 22:50 UTCJul 4, 05:12 UTC6h 22m
2026-07-03 DAL231 CDG → RDU Jul 3, 10:52 UTCJul 3, 19:40 UTC8h 48m
2026-07-03 DAL231 CDG → RDU Jul 3, 10:55 UTCJul 3, 19:40 UTC8h 45m
2026-07-03 DAL231 CDG → RDU Jul 3, 10:52 UTCJul 3, 19:37 UTC8h 45m
2026-07-03 DAL230 - Jul 3, 00:20 UTCJul 3, 08:05 UTC7h 45m
2026-07-02 DAL958 - Jul 2, 15:45 UTCJul 2, 20:40 UTC4h 55m
2026-07-02 DAL958 LAX → JFK Jul 2, 15:44 UTCJul 2, 20:37 UTC4h 53m
2026-07-01 DAL353 JFK → LAX Jul 1, 20:40 UTCJul 2, 01:50 UTC5h 10m
2026-07-01 DAL129 JFK → BCN Jul 1, 09:35 UTCJul 1, 17:25 UTC7h 50m
2026-06-30 DAL128 BCN → JFK Jun 30, 23:18 UTCJul 1, 06:19 UTC7h 1m
2026-06-30 DAL128 BCN → JFK Jun 30, 23:20 UTCJul 1, 06:25 UTC7h 5m
2026-06-30 DAL129 JFK → BCN Jun 30, 10:10 UTCJun 30, 18:00 UTC7h 50m
2026-06-30 DAL128 BCN → JFK Jun 30, 00:31 UTCJun 30, 07:30 UTC6h 59m
2026-06-30 DAL128 BCN → JFK Jun 30, 00:35 UTCJun 30, 07:40 UTC7h 6m
2026-06-29 DAL958 LAX → JFK Jun 29, 15:49 UTCJun 29, 20:40 UTC4h 50m
2026-06-28 DAL353 - Jun 28, 20:45 UTCJun 29, 01:55 UTC5h 10m
2026-06-28 DAL203 ATH → JFK Jun 28, 07:32 UTCJun 28, 17:20 UTC9h 48m
2026-06-28 DAL203 - Jun 28, 07:34 UTCJun 28, 11:35 UTC4h 0m
2026-06-27 DAL202 JFK → ATH Jun 27, 19:45 UTCJun 28, 04:29 UTC8h 45m
2026-06-27 DAL129 JFK → BCN Jun 27, 09:15 UTCJun 27, 17:20 UTC8h 5m
2026-06-26 DAL128 BCN → JFK Jun 26, 23:09 UTCJun 27, 05:59 UTC6h 50m

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 N821NW page for operator, model, and routing details .

Mode-S AB35D3 frequently asked

What is Mode-S code AB35D3?
AB35D3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N821NW.
Where is Mode-S AB35D3 registered?
Mode-S code AB35D3 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 AB35D3 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB35D3, octal 52632723, decimal 11,220,435.
What flights does AB35D3 operate?
Mode-S AB35D3 has broadcast 20 distinct callsigns, including DAL231, DAL97, DAL128, DAL127, DAL182.