Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB538B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N829NW · AIRBUS A-330-300 · operated by BANK OF UTAH TRUSTEE

Hex
AB538B
Octal
52651613
Decimal
11,228,043
Country
US
Tail
N829NW
Type
A333
No current signal · last broadcast 5h ago
Flights observed
149
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S AB538B.

Country allocation

The ICAO 24-bit address AB538B 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
DAL259 Delta Air Lines 9 2026-05-01
DAL152 Delta Air Lines 7 2026-05-01
DAL72 Delta Air Lines 6 2026-05-08
DAL250 Delta Air Lines 6 2026-05-28
DAL47 Delta Air Lines 5 2026-05-09
DAL258 Delta Air Lines 5 2026-04-30
DAL195 Delta Air Lines 5 2026-05-28
DAL98 Delta Air Lines 4 2026-04-16
DAL97 Delta Air Lines 4 2026-04-15
DAL277 Delta Air Lines 4 2026-05-25
DAL266 Delta Air Lines 4 2026-04-15
DAL228 Delta Air Lines 4 2026-04-17
DAL207 Delta Air Lines 4 2026-05-26
DAL194 Delta Air Lines 4 2026-05-24
DAL192 Delta Air Lines 4 2026-05-28
DAL182 Delta Air Lines 4 2026-05-09
DAL113 Delta Air Lines 4 2026-05-27
DAL104 Delta Air Lines 4 2026-05-18
DAL934 Delta Air Lines 3 2026-05-03
DAL267 Delta Air Lines 3 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 DAL84 ATL → CDG May 30, 04:10 UTCMay 30, 05:30 UTC1h 20m
2026-05-29 DAL193 VCE → ATL May 29, 09:15 UTCMay 29, 19:15 UTC10h 0m
2026-05-28 DAL192 ATL → VCE May 28, 21:45 UTCMay 29, 06:20 UTC8h 35m
2026-05-28 DAL192 ATL → VCE May 28, 21:43 UTCMay 29, 06:22 UTC8h 39m
2026-05-28 DAL195 BCN → ATL May 28, 09:30 UTCMay 28, 18:45 UTC9h 15m
2026-05-28 DAL250 ICN → SEA May 28, 00:09 UTCMay 28, 06:51 UTC6h 42m
2026-05-28 DAL250 ICN → SEA May 28, 00:10 UTCMay 28, 00:40 UTC30m
2026-05-27 DAL113 FCO → BOS May 27, 11:15 UTCMay 27, 19:15 UTC8h 0m
2026-05-27 DAL206 DTW → FCO May 27, 00:14 UTCMay 27, 00:44 UTC30m
2026-05-27 DAL206 DTW → FCO May 27, 00:14 UTCMay 27, 09:06 UTC8h 52m
2026-05-26 DAL207 FCO → DTW May 26, 07:10 UTCMay 26, 09:59 UTC2h 50m
2026-05-26 DAL207 FCO → DTW May 26, 07:07 UTCMay 26, 16:18 UTC9h 11m
2026-05-25 DAL112 BOS → FCO May 25, 20:55 UTCMay 26, 04:39 UTC7h 44m
2026-05-25 DAL112 BOS → FCO May 25, 20:59 UTCMay 26, 02:44 UTC5h 45m
2026-05-25 DAL277 HNL → KIX May 25, 10:30 UTCMay 25, 18:21 UTC7h 51m
2026-05-25 DAL277 HNL → KIX May 25, 10:30 UTCMay 25, 10:45 UTC15m
2026-05-25 DAL276 HND → DTW May 25, 05:15 UTCMay 25, 07:50 UTC2h 35m
2026-05-24 DAL251 NAS → MIA May 24, 13:20 UTCMay 24, 21:15 UTC7h 55m
2026-05-24 DAL251 NAS → MIA May 24, 13:17 UTCMay 24, 21:05 UTC7h 48m
2026-05-24 DAL194 ATL → BCN May 24, 02:33 UTCMay 24, 10:56 UTC8h 23m
2026-05-24 DAL194 ATL → BCN May 24, 02:35 UTCMay 24, 04:00 UTC1h 25m
2026-05-23 DAL195 BCN → ATL May 23, 10:05 UTCMay 23, 19:45 UTC9h 40m
2026-05-22 DAL250 ICN → SEA May 22, 23:40 UTCMay 23, 06:09 UTC6h 29m
2026-05-22 DAL250 ICN → SEA May 22, 23:40 UTCMay 23, 00:15 UTC35m
2026-05-22 DAL113 FCO → BOS May 22, 12:20 UTCMay 22, 20:50 UTC8h 30m
2026-05-22 DAL113 FCO → BOS May 22, 12:19 UTCMay 22, 20:45 UTC8h 26m
2026-05-22 DAL206 DTW → FCO May 22, 00:15 UTCMay 22, 08:30 UTC8h 15m
2026-05-21 DAL207 FCO → DTW May 21, 07:05 UTCMay 21, 16:45 UTC9h 40m
2026-05-21 DAL207 FCO → DTW May 21, 07:02 UTCMay 21, 16:40 UTC9h 38m
2026-05-20 DAL112 BOS → FCO May 20, 21:30 UTCMay 21, 04:55 UTC7h 25m
2026-05-20 DAL277 HNL → KIX May 20, 10:45 UTCMay 20, 18:55 UTC8h 10m
2026-05-20 DAL277 HNL → KIX May 20, 10:42 UTCMay 20, 18:53 UTC8h 11m
2026-05-20 DAL276 HND → DTW May 20, 00:45 UTCMay 20, 07:40 UTC6h 56m
2026-05-19 DAL251 NAS → MIA May 19, 13:25 UTCMay 19, 21:10 UTC7h 45m
2026-05-19 DAL194 ATL → BCN May 19, 02:10 UTCMay 19, 10:35 UTC8h 25m
2026-05-19 DAL194 ATL → BCN May 19, 02:10 UTCMay 19, 10:30 UTC8h 20m
2026-05-18 DAL104 GRU → ATL May 18, 02:25 UTCMay 18, 11:48 UTC9h 23m
2026-05-18 DAL104 GRU → ATL May 18, 02:25 UTCMay 18, 11:45 UTC9h 20m
2026-05-16 DAL105 ATL → GRU May 16, 23:15 UTCMay 17, 08:20 UTC9h 5m
2026-05-16 DAL193 VCE → ATL May 16, 09:35 UTCMay 16, 19:40 UTC10h 5m
2026-05-15 DAL192 ATL → VCE May 15, 21:45 UTCMay 16, 06:31 UTC8h 46m
2026-05-15 DAL192 ATL → VCE May 15, 21:43 UTCMay 16, 06:33 UTC8h 50m
2026-05-15 DAL177 DUB → ATL May 15, 10:30 UTCMay 15, 10:45 UTC15m
2026-05-15 DAL177 DUB → ATL May 15, 10:26 UTCMay 15, 18:29 UTC8h 3m
2026-05-15 DAL176 ATL → DUB May 15, 01:10 UTCMay 15, 04:05 UTC2h 55m
2026-05-15 DAL176 ATL → DUB May 15, 01:07 UTCMay 15, 08:23 UTC7h 16m
2026-05-14 DAL720 MSP → MSO May 14, 05:20 UTCMay 14, 08:40 UTC3h 20m
2026-05-13 DAL919 BOS → DTW May 13, 23:45 UTCMay 14, 03:30 UTC3h 45m
2026-05-12 DAL720 MSP → MSO May 12, 05:15 UTCMay 12, 08:40 UTC3h 25m
2026-05-12 DAL919 BOS → DTW May 12, 02:45 UTCMay 12, 03:10 UTC25m

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 N829NW page for operator, model, and routing details .

Mode-S AB538B frequently asked

What is Mode-S code AB538B?
AB538B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N829NW.
Where is Mode-S AB538B registered?
Mode-S code AB538B 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 AB538B broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB538B, octal 52651613, decimal 11,228,043.
What flights does AB538B operate?
Mode-S AB538B has broadcast 20 distinct callsigns, including DAL259, DAL152, DAL72, DAL250, DAL47.