Apparatus

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sensors Mode-S transponder

AB40F8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N824NW · AIRBUS A-330-300 · operated by DELTA AIR LINES INC

Hex
AB40F8
Octal
52640370
Decimal
11,223,288
Country
US
Tail
N824NW
Type
A333
No current signal · last broadcast 2h ago
Flights observed
283
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AB40F8.

Country allocation

The ICAO 24-bit address AB40F8 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
DAL203 Delta Air Lines 10 2026-05-06
DAL195 - 10 2026-07-12
DAL128 Delta Air Lines 10 2026-06-25
DAL75 - 9 2026-07-05
DAL72 Delta Air Lines 9 2026-06-08
DAL250 - 9 2026-07-11
DAL163 - 8 2026-07-05
DAL150 Delta Air Lines 8 2026-05-03
DAL83 - 7 2026-06-19
DAL82 Delta Air Lines 7 2026-04-30
DAL74 - 7 2026-07-03
DAL73 Delta Air Lines 7 2026-06-09
DAL47 Delta Air Lines 7 2026-05-05
DAL237 Delta Air Lines 7 2026-05-18
DAL206 - 7 2026-07-11
DAL202 Delta Air Lines 7 2026-05-05
DAL113 - 7 2026-07-11
DAL84 - 6 2026-07-14
DAL49 Delta Air Lines 6 2026-05-19
DAL236 Delta Air Lines 6 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL84 - Jul 14, 02:10 UTCJul 14, 10:20 UTC8h 10m
2026-07-13 DAL85 - Jul 13, 14:10 UTCJul 13, 23:05 UTC8h 55m
2026-07-13 DAL84 ATL → CDG Jul 13, 02:15 UTCJul 13, 10:35 UTC8h 20m
2026-07-12 DAL195 BCN → ATL Jul 12, 09:10 UTCJul 12, 18:35 UTC9h 25m
2026-07-11 DAL250 - Jul 11, 23:50 UTCJul 12, 06:01 UTC6h 10m
2026-07-11 DAL250 BOS → BCN Jul 11, 23:50 UTCJul 12, 06:46 UTC6h 56m
2026-07-11 DAL113 - Jul 11, 11:35 UTCJul 11, 20:00 UTC8h 25m
2026-07-11 DAL206 - Jul 11, 00:20 UTCJul 11, 08:01 UTC7h 40m
2026-07-11 DAL206 DTW → FCO Jul 11, 00:19 UTCJul 11, 08:56 UTC8h 37m
2026-07-10 DAL229 - Jul 10, 09:35 UTCJul 10, 17:50 UTC8h 15m
2026-07-09 DAL152 MSP → CDG Jul 9, 22:55 UTCJul 10, 06:40 UTC7h 45m
2026-07-09 DAL153 - Jul 9, 09:15 UTCJul 9, 17:45 UTC8h 30m
2026-07-08 DAL228 - Jul 8, 22:55 UTCJul 9, 06:00 UTC7h 5m
2026-07-08 DAL228 DTW → CDG Jul 8, 22:54 UTCJul 9, 06:16 UTC7h 22m
2026-07-08 DAL207 - Jul 8, 09:20 UTCJul 8, 10:00 UTC40m
2026-07-08 DAL207 FCO → DTW Jul 8, 09:19 UTCJul 8, 18:25 UTC9h 6m
2026-07-07 DAL112 - Jul 7, 23:15 UTCJul 8, 06:45 UTC7h 30m
2026-07-07 DAL277 MXP → BOS Jul 7, 12:40 UTCJul 7, 20:25 UTC7h 45m
2026-07-07 DAL276 BOS → MXP Jul 7, 01:52 UTCJul 7, 09:02 UTC7h 10m
2026-07-07 DAL276 - Jul 7, 01:55 UTCJul 7, 08:00 UTC6h 5m
2026-07-06 DAL251 NAS → MIA Jul 6, 15:30 UTCJul 6, 23:05 UTC7h 35m
2026-07-06 DAL194 ATL → BCN Jul 6, 04:05 UTCJul 6, 12:45 UTC8h 40m
2026-07-05 DAL75 - Jul 5, 16:10 UTCJul 5, 18:00 UTC1h 50m
2026-07-05 DAL75 AMS → ATL Jul 5, 16:09 UTCJul 6, 01:20 UTC9h 11m
2026-07-05 DAL75 AMS → ATL Jul 5, 16:09 UTCJul 6, 01:27 UTC9h 18m
2026-07-05 DAL164 - Jul 5, 06:20 UTCJul 5, 08:55 UTC2h 35m
2026-07-05 DAL164 MSP → AMS Jul 5, 06:18 UTCJul 5, 13:53 UTC7h 35m
2026-07-05 DAL163 - Jul 5, 03:35 UTCJul 5, 04:00 UTC25m
2026-07-04 DAL163 - Jul 4, 16:10 UTCJul 5, 01:55 UTC9h 45m
2026-07-04 DAL162 MSP → AMS Jul 4, 06:35 UTCJul 4, 14:05 UTC7h 30m
2026-07-03 DAL163 - Jul 3, 11:50 UTCJul 3, 13:40 UTC1h 50m
2026-07-03 DAL163 AMS → MSP Jul 3, 11:48 UTCJul 3, 21:07 UTC9h 19m
2026-07-03 DAL163 AMS → MSP Jul 3, 11:48 UTCJul 3, 20:55 UTC9h 7m
2026-07-03 DAL74 ATL → AMS Jul 3, 00:30 UTCJul 3, 08:20 UTC7h 50m
2026-07-02 DAL175 MXP → ATL Jul 2, 10:50 UTCJul 2, 20:35 UTC9h 45m
2026-07-01 DAL174 - Jul 1, 23:15 UTCJul 2, 08:00 UTC8h 45m
2026-07-01 DAL174 ATL → MXP Jul 1, 23:13 UTCJul 2, 08:08 UTC8h 55m
2026-07-01 DAL193 - Jul 1, 10:15 UTCJul 1, 20:30 UTC10h 15m
2026-06-30 DAL192 ATL → VCE Jun 30, 22:45 UTCJul 1, 02:00 UTC3h 15m
2026-06-30 DAL192 ATL → VCE Jun 30, 22:44 UTCJul 1, 07:38 UTC8h 54m
2026-06-30 DAL175 MXP → ATL Jun 30, 10:45 UTCJun 30, 20:20 UTC9h 35m
2026-06-29 DAL174 ATL → MXP Jun 29, 22:19 UTCJun 30, 07:05 UTC8h 46m
2026-06-29 DAL195 BCN → ATL Jun 29, 09:29 UTCJun 29, 19:00 UTC9h 30m
2026-06-29 DAL195 BCN → ATL Jun 29, 09:26 UTCJun 29, 18:57 UTC9h 31m
2026-06-29 DAL250 ICN → SEA Jun 29, 00:01 UTCJun 29, 06:33 UTC6h 32m
2026-06-29 DAL250 ICN → SEA Jun 29, 00:05 UTCJun 29, 06:40 UTC6h 35m
2026-06-28 DAL113 FCO → BOS Jun 28, 11:39 UTCJun 28, 13:59 UTC2h 20m
2026-06-28 DAL113 FCO → BOS Jun 28, 11:37 UTCJun 28, 20:05 UTC8h 28m
2026-06-28 DAL113 FCO → BOS Jun 28, 11:37 UTCJun 28, 20:12 UTC8h 35m
2026-06-28 DAL206 - Jun 28, 00:15 UTCJun 28, 08:50 UTC8h 35m

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 N824NW page for operator, model, and routing details .

Mode-S AB40F8 frequently asked

What is Mode-S code AB40F8?
AB40F8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N824NW.
Where is Mode-S AB40F8 registered?
Mode-S code AB40F8 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 AB40F8 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 AB40F8, octal 52640370, decimal 11,223,288.
What flights does AB40F8 operate?
Mode-S AB40F8 has broadcast 20 distinct callsigns, including DAL203, DAL195, DAL128, DAL75, DAL72.