Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC259B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N882DN · BOEING 737-900 · operated by UMB BANK NA TRUSTEE

Hex
AC259B
Octal
53022633
Decimal
11,281,819
Country
US
Tail
N882DN
Type
B739
No current signal · last broadcast 8m ago
Flights observed
172
Distinct callsigns
20
Country
US
Last broadcast
8m ago

Last known position

Most recent position reported by Mode-S AC259B.

Country allocation

The ICAO 24-bit address AC259B 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
DAL368 Delta Air Lines 5 2026-04-14
DAL2396 Delta Air Lines 5 2026-05-25
DAL1109 Delta Air Lines 4 2026-06-11
DAL879 Delta Air Lines 3 2026-04-17
DAL693 Delta Air Lines 3 2026-06-04
DAL582 Delta Air Lines 3 2026-04-16
DAL565 - 3 2026-04-13
DAL539 Delta Air Lines 3 2026-04-17
DAL2925 Delta Air Lines 3 2026-05-29
DAL2775 Delta Air Lines 3 2026-04-21
DAL2723 Delta Air Lines 3 2026-05-25
DAL1956 Delta Air Lines 3 2026-05-28
DAL1888 Delta Air Lines 3 2026-04-15
DAL1766 Delta Air Lines 3 2026-06-08
DAL1628 Delta Air Lines 3 2026-04-13
DAL1542 Delta Air Lines 3 2026-06-09
DAL1336 Delta Air Lines 3 2026-05-22
DAL1333 Delta Air Lines 3 2026-06-06
DAL1124 Delta Air Lines 3 2026-05-30
DAL888 Delta Air Lines 2 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-13 DAL1713 ATL → ELP Jun 13, 00:00 UTCJun 13, 02:45 UTC2h 45m
2026-06-12 DAL2700 BDL → ATL Jun 12, 21:15 UTCJun 12, 22:25 UTC1h 10m
2026-06-12 DAL2700 BDL → ATL Jun 12, 18:20 UTCJun 12, 19:45 UTC1h 25m
2026-06-12 DAL2356 SFO → SLC Jun 12, 16:10 UTCJun 12, 16:55 UTC45m
2026-06-12 DAL2356 SFO → SLC Jun 12, 13:40 UTCJun 12, 14:25 UTC45m
2026-06-12 DAL3114 - Jun 12, 11:10 UTCJun 12, 11:55 UTC45m
2026-06-12 DAL3131 - Jun 12, 03:45 UTCJun 12, 04:25 UTC40m
2026-06-11 DAL1109 ATL → LGA Jun 11, 22:45 UTCJun 12, 01:15 UTC2h 31m
2026-06-11 DAL1109 ATL → LGA Jun 11, 18:35 UTCJun 11, 21:25 UTC2h 50m
2026-06-11 DAL2999 RDU → BOS Jun 11, 15:10 UTCJun 11, 16:45 UTC1h 35m
2026-06-11 DAL2999 RDU → BOS Jun 11, 12:25 UTCJun 11, 13:55 UTC1h 30m
2026-06-10 DAL1109 ATL → LGA Jun 10, 22:55 UTCJun 11, 01:20 UTC2h 25m
2026-06-10 DAL1109 ATL → LGA Jun 10, 18:35 UTCJun 10, 21:25 UTC2h 50m
2026-06-10 DAL1424 PBI → LGA Jun 10, 16:05 UTCJun 10, 17:10 UTC1h 5m
2026-06-10 DAL1424 PBI → LGA Jun 10, 13:15 UTCJun 10, 14:20 UTC1h 5m
2026-06-10 DAL564 JFK → SEA Jun 10, 06:10 UTCJun 10, 10:20 UTC4h 10m
2026-06-09 DAL357 BOS → ATL Jun 9, 23:45 UTCJun 10, 04:35 UTC4h 50m
2026-06-09 DAL1976 NAS → ATL Jun 9, 19:40 UTCJun 9, 21:15 UTC1h 35m
2026-06-09 DAL1938 ATL → NAS Jun 9, 16:45 UTCJun 9, 17:20 UTC35m
2026-06-09 DAL1938 ATL → NAS Jun 9, 15:59 UTCJun 9, 17:36 UTC1h 37m
2026-06-09 DAL1039 BOS → LGA Jun 9, 12:15 UTCJun 9, 14:15 UTC2h 0m
2026-06-09 DAL1542 ATL → CVG Jun 9, 00:30 UTCJun 9, 03:15 UTC2h 45m
2026-06-09 DAL1542 ATL → CVG Jun 9, 00:26 UTCJun 9, 03:08 UTC2h 42m
2026-06-08 DAL1542 ATL → CVG Jun 8, 20:00 UTCJun 8, 22:50 UTC2h 50m
2026-06-08 DAL1766 MSP → ATL Jun 8, 16:00 UTCJun 8, 18:30 UTC2h 30m
2026-06-08 DAL1766 MSP → ATL Jun 8, 15:57 UTCJun 8, 18:27 UTC2h 30m
2026-06-08 DAL1766 MSP → ATL Jun 8, 12:25 UTCJun 8, 14:45 UTC2h 20m
2026-06-07 DAL2015 CUN → DTW Jun 7, 22:40 UTCJun 8, 01:00 UTC2h 20m
2026-06-07 DAL2756 BOS → TPA Jun 7, 18:45 UTCJun 7, 21:05 UTC2h 20m
2026-06-07 DAL2593 DEN → MSP Jun 7, 13:30 UTCJun 7, 16:35 UTC3h 5m
2026-06-06 DAL2593 DEN → MSP Jun 6, 21:44 UTCJun 7, 00:19 UTC2h 35m
2026-06-06 DAL2301 MCO → BOS Jun 6, 16:34 UTCJun 6, 19:34 UTC3h 0m
2026-06-06 DAL2301 MCO → BOS Jun 6, 12:24 UTCJun 6, 14:59 UTC2h 35m
2026-06-06 DAL1333 JFK → MCO Jun 6, 07:35 UTCJun 6, 10:39 UTC3h 5m
2026-06-06 DAL1333 JFK → MCO Jun 6, 07:33 UTCJun 6, 10:41 UTC3h 8m
2026-06-06 DAL2197 HPN → ATL Jun 6, 03:55 UTCJun 6, 04:55 UTC1h 0m
2026-06-05 DAL1779 PVR → LAX Jun 5, 23:45 UTCJun 6, 01:10 UTC1h 25m
2026-06-05 DAL1793 ATL → PVD Jun 5, 18:35 UTCJun 5, 19:50 UTC1h 15m
2026-06-05 DAL1793 ATL → PVD Jun 5, 18:34 UTCJun 5, 21:06 UTC2h 32m
2026-06-05 DAL891 MSP → MEM Jun 5, 12:35 UTCJun 5, 16:25 UTC3h 50m
2026-06-05 DAL790 ATL → LGA Jun 5, 00:55 UTCJun 5, 01:35 UTC40m
2026-06-04 DAL693 SEA → HNL Jun 4, 18:48 UTCJun 4, 22:58 UTC4h 10m
2026-06-04 DAL693 SEA → HNL Jun 4, 18:50 UTCJun 4, 23:00 UTC4h 10m
2026-06-04 DAL693 SEA → HNL Jun 4, 12:20 UTCJun 4, 16:50 UTC4h 30m
2026-06-04 DAL495 SFO → DTW Jun 4, 06:45 UTCJun 4, 10:55 UTC4h 10m
2026-06-04 DAL756 MSP → LAX Jun 4, 00:10 UTCJun 4, 03:50 UTC3h 40m
2026-06-03 DAL2203 DTW → MSP Jun 3, 20:50 UTCJun 3, 22:15 UTC1h 25m
2026-06-03 DAL2203 DTW → MSP Jun 3, 20:47 UTCJun 3, 22:09 UTC1h 22m
2026-06-03 DAL1519 MSP → DEN Jun 3, 17:55 UTCJun 3, 19:05 UTC1h 10m
2026-06-03 DAL2369 ATL → BNA Jun 3, 13:40 UTCJun 3, 16:35 UTC2h 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 N882DN page for operator, model, and routing details .

Mode-S AC259B frequently asked

What is Mode-S code AC259B?
AC259B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N882DN.
Where is Mode-S AC259B registered?
Mode-S code AC259B 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 AC259B broadcasting right now?
No active broadcast right now. Last signal was 8m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC259B, octal 53022633, decimal 11,281,819.
What flights does AC259B operate?
Mode-S AC259B has broadcast 20 distinct callsigns, including DAL368, DAL2396, DAL1109, DAL879, DAL693.