Apparatus

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sensors Mode-S transponder

AB398A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N822NW · AIRBUS A-330-300 · operated by DELTA AIR LINES INC

Hex
AB398A
Octal
52634612
Decimal
11,221,386
Country
US
Tail
N822NW
Type
A333
No current signal · last broadcast 1h ago
Flights observed
298
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AB398A.

Country allocation

The ICAO 24-bit address AB398A 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
DAL194 - 11 2026-06-27
DAL47 - 10 2026-07-08
DAL313 - 10 2026-06-18
DAL104 - 10 2026-06-17
DAL74 Delta Air Lines 9 2026-05-30
DAL73 - 9 2026-07-06
DAL312 Delta Air Lines 8 2026-06-09
DAL277 - 8 2026-07-04
DAL195 - 8 2026-07-01
DAL134 - 7 2026-07-05
DAL112 - 7 2026-07-04
DAL837 - 6 2026-06-17
DAL309 Delta Air Lines 6 2026-06-10
DAL150 - 6 2026-06-15
DAL126 - 6 2026-07-14
DAL105 - 6 2026-06-15
DAL72 - 5 2026-06-19
DAL251 Delta Air Lines 5 2026-06-27
DAL229 Delta Air Lines 5 2026-05-11
DAL185 Delta Air Lines 5 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL127 - Jul 14, 11:15 UTCJul 14, 18:30 UTC7h 15m
2026-07-14 DAL126 JFK → MAD Jul 14, 00:55 UTCJul 14, 07:38 UTC6h 43m
2026-07-14 DAL126 - Jul 14, 00:55 UTCJul 14, 02:30 UTC1h 35m
2026-07-13 DAL231 - Jul 13, 10:55 UTCJul 13, 19:30 UTC8h 35m
2026-07-12 DAL230 - Jul 12, 23:50 UTCJul 13, 07:40 UTC7h 50m
2026-07-12 DAL230 JFK → FCO Jul 12, 23:47 UTCJul 13, 07:39 UTC7h 52m
2026-07-12 DAL157 - Jul 12, 11:55 UTCJul 12, 19:50 UTC7h 55m
2026-07-12 DAL157 - Jul 12, 04:15 UTCJul 12, 19:50 UTC15h 35m
2026-07-11 DAL157 - Jul 11, 22:35 UTCJul 12, 19:50 UTC21h 15m
2026-07-11 DAL156 JFK → ACC Jul 11, 21:45 UTCJul 12, 07:25 UTC9h 40m
2026-07-11 DAL156 - Jul 11, 21:45 UTCJul 12, 05:15 UTC7h 30m
2026-07-11 DAL273 LIS → JFK Jul 11, 09:30 UTCJul 11, 16:35 UTC7h 5m
2026-07-11 DAL273 LIS → JFK Jul 11, 09:29 UTCJul 11, 16:40 UTC7h 11m
2026-07-11 DAL272 JFK → LIS Jul 11, 00:50 UTCJul 11, 06:55 UTC6h 5m
2026-07-10 DAL958 - Jul 10, 02:00 UTCJul 10, 02:05 UTC5m
2026-07-10 DAL958 - Jul 10, 00:35 UTCJul 10, 01:55 UTC1h 20m
2026-07-10 DAL958 CLE → JFK Jul 10, 00:30 UTCJul 10, 02:04 UTC1h 34m
2026-07-09 DAL958 LAX → CLE Jul 9, 15:40 UTCJul 9, 21:05 UTC5h 25m
2026-07-08 DAL353 - Jul 8, 20:35 UTCJul 9, 01:40 UTC5h 5m
2026-07-08 DAL47 AMS → JFK Jul 8, 08:34 UTCJul 8, 15:52 UTC7h 18m
2026-07-08 DAL47 AMS → JFK Jul 8, 08:35 UTCJul 8, 15:55 UTC7h 20m
2026-07-07 DAL70 ATL → AMS Jul 7, 19:45 UTCJul 8, 03:45 UTC8h 0m
2026-07-07 DAL83 - Jul 7, 08:20 UTCJul 7, 17:05 UTC8h 45m
2026-07-07 DAL82 ATL → CDG Jul 7, 03:40 UTCJul 7, 04:35 UTC55m
2026-07-06 DAL82 ATL → CDG Jul 6, 20:40 UTCJul 7, 03:35 UTC6h 55m
2026-07-06 DAL73 - Jul 6, 08:45 UTCJul 6, 16:30 UTC7h 45m
2026-07-06 DAL73 AMS → ATL Jul 6, 08:45 UTCJul 6, 17:50 UTC9h 5m
2026-07-05 DAL134 - Jul 5, 22:50 UTCJul 6, 05:45 UTC6h 55m
2026-07-05 DAL207 - Jul 5, 07:45 UTCJul 5, 17:25 UTC9h 40m
2026-07-04 DAL112 BOS → FCO Jul 4, 21:55 UTCJul 5, 05:12 UTC7h 17m
2026-07-04 DAL112 - Jul 4, 21:55 UTCJul 4, 22:30 UTC35m
2026-07-04 DAL277 MXP → BOS Jul 4, 11:12 UTCJul 4, 19:38 UTC8h 26m
2026-07-04 DAL277 MXP → BOS Jul 4, 11:15 UTCJul 4, 19:50 UTC8h 35m
2026-07-03 DAL174 ATL → MXP Jul 3, 23:50 UTCJul 4, 08:35 UTC8h 45m
2026-07-03 DAL193 - Jul 3, 10:35 UTCJul 3, 20:50 UTC10h 15m
2026-07-02 DAL192 ATL → VCE Jul 2, 23:20 UTCJul 3, 08:05 UTC8h 45m
2026-07-02 DAL193 - Jul 2, 09:50 UTCJul 2, 19:55 UTC10h 5m
2026-07-01 DAL192 ATL → VCE Jul 1, 21:50 UTCJul 2, 06:51 UTC9h 1m
2026-07-01 DAL192 ATL → VCE Jul 1, 21:46 UTCJul 2, 06:54 UTC9h 8m
2026-07-01 DAL195 BCN → ATL Jul 1, 09:30 UTCJul 1, 18:51 UTC9h 21m
2026-07-01 DAL195 BCN → ATL Jul 1, 09:30 UTCJul 1, 18:50 UTC9h 20m
2026-06-30 DAL250 ICN → SEA Jun 30, 23:38 UTCJul 1, 06:19 UTC6h 41m
2026-06-30 DAL250 ICN → SEA Jun 30, 23:40 UTCJul 1, 06:20 UTC6h 40m
2026-06-30 DAL113 FCO → BOS Jun 30, 11:35 UTCJun 30, 19:55 UTC8h 20m
2026-06-30 DAL206 - Jun 30, 00:14 UTCJun 30, 08:30 UTC8h 16m
2026-06-30 DAL206 DTW → FCO Jun 30, 00:10 UTCJun 30, 08:32 UTC8h 22m
2026-06-29 DAL207 - Jun 29, 07:40 UTCJun 29, 16:55 UTC9h 15m
2026-06-28 DAL112 BOS → FCO Jun 28, 21:53 UTCJun 29, 05:07 UTC7h 14m
2026-06-28 DAL112 BOS → FCO Jun 28, 21:55 UTCJun 29, 05:09 UTC7h 15m
2026-06-28 DAL277 NCE → BOS Jun 28, 10:10 UTCJun 28, 18:05 UTC7h 55m

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 N822NW page for operator, model, and routing details .

Mode-S AB398A frequently asked

What is Mode-S code AB398A?
AB398A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N822NW.
Where is Mode-S AB398A registered?
Mode-S code AB398A 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 AB398A broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB398A, octal 52634612, decimal 11,221,386.
What flights does AB398A operate?
Mode-S AB398A has broadcast 20 distinct callsigns, including DAL194, DAL47, DAL313, DAL104, DAL74.