Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC45AC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N890DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AC45AC
Octal
53042654
Decimal
11,290,028
Country
US
Tail
N890DN
Type
B739
No current signal · last broadcast 1h ago
Flights observed
437
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AC45AC.

Country allocation

The ICAO 24-bit address AC45AC 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
DAL2696 Delta Air Lines 10 2026-07-03
DAL944 - 7 2026-07-10
DAL1757 Delta Air Lines 7 2026-05-28
DAL1571 Delta Air Lines 7 2026-05-18
DAL2951 Delta Air Lines 6 2026-06-16
DAL1380 - 6 2026-06-17
DAL2872 - 5 2026-07-04
DAL2531 Delta Air Lines 5 2026-06-30
DAL2300 - 5 2026-06-30
DAL941 - 4 2026-07-04
DAL874 Delta Air Lines 4 2026-05-22
DAL868 - 4 2026-07-04
DAL517 Delta Air Lines 4 2026-06-12
DAL2918 - 4 2026-07-04
DAL2879 Delta Air Lines 4 2026-04-18
DAL2195 - 4 2026-06-27
DAL2022 - 4 2026-07-12
DAL1592 Delta Air Lines 4 2026-04-15
DAL1519 - 4 2026-07-10
DAL1129 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL2482 - Jul 14, 14:15 UTCJul 14, 15:00 UTC45m
2026-07-14 DAL1274 - Jul 14, 11:10 UTCJul 14, 11:50 UTC40m
2026-07-14 DAL1599 - Jul 14, 03:30 UTCJul 14, 04:15 UTC45m
2026-07-14 DAL1599 MSP → MSN Jul 14, 03:26 UTCJul 14, 04:11 UTC45m
2026-07-13 DAL402 RSW → MSP Jul 13, 22:20 UTCJul 14, 01:25 UTC3h 5m
2026-07-13 DAL402 RSW → MSP Jul 13, 22:19 UTCJul 14, 01:24 UTC3h 5m
2026-07-13 DAL402 MSP → RSW Jul 13, 18:05 UTCJul 13, 21:10 UTC3h 5m
2026-07-13 DAL2916 SLC → MSP Jul 13, 14:35 UTCJul 13, 16:45 UTC2h 10m
2026-07-12 DAL2022 - Jul 12, 23:30 UTCJul 13, 03:40 UTC4h 10m
2026-07-12 DAL2022 PHL → PHL Jul 12, 23:15 UTCJul 12, 23:25 UTC10m
2026-07-12 DAL2022 SLC → PHL Jul 12, 17:25 UTCJul 12, 21:15 UTC3h 50m
2026-07-12 DAL2023 PHL → SLC Jul 12, 11:55 UTCJul 12, 15:55 UTC4h 0m
2026-07-11 DAL2022 - Jul 11, 16:05 UTCJul 11, 20:00 UTC3h 55m
2026-07-11 DAL2906 LAX → SLC Jul 11, 12:50 UTCJul 11, 14:15 UTC1h 25m
2026-07-11 DAL2854 - Jul 11, 03:35 UTCJul 11, 05:55 UTC2h 20m
2026-07-10 DAL944 - Jul 10, 21:10 UTCJul 11, 01:20 UTC4h 10m
2026-07-10 DAL944 DTW → SEA Jul 10, 21:06 UTCJul 11, 01:15 UTC4h 9m
2026-07-10 DAL1519 MSP → DTW Jul 10, 18:10 UTCJul 10, 19:30 UTC1h 20m
2026-07-10 DAL2553 PHX → MSP Jul 10, 13:50 UTCJul 10, 16:20 UTC2h 30m
2026-07-10 DAL2297 MSP → PHX Jul 10, 00:30 UTCJul 10, 03:20 UTC2h 50m
2026-07-09 DAL2483 YVR → MSP Jul 9, 19:26 UTCJul 9, 22:13 UTC2h 47m
2026-07-09 DAL2483 YVR → MSP Jul 9, 19:30 UTCJul 9, 22:15 UTC2h 45m
2026-07-09 DAL2482 MSP → YVR Jul 9, 14:10 UTCJul 9, 17:30 UTC3h 20m
2026-07-09 DAL2221 - Jul 9, 11:05 UTCJul 9, 12:45 UTC1h 40m
2026-07-09 DAL858 - Jul 9, 01:40 UTCJul 9, 05:15 UTC3h 35m
2026-07-08 DAL355 - Jul 8, 20:40 UTCJul 9, 00:25 UTC3h 45m
2026-07-08 DAL2214 SLC → BNA Jul 8, 15:40 UTCJul 8, 18:35 UTC2h 55m
2026-07-08 DAL1440 GEG → SLC Jul 8, 12:30 UTCJul 8, 13:40 UTC1h 10m
2026-07-08 DAL2418 MSP → GEG Jul 8, 03:10 UTCJul 8, 05:55 UTC2h 45m
2026-07-07 DAL2015 LGA → MSP Jul 7, 22:40 UTCJul 8, 01:00 UTC2h 20m
2026-07-07 DAL2756 - Jul 7, 18:50 UTCJul 7, 19:00 UTC10m
2026-07-07 DAL2756 MSP → LGA Jul 7, 18:50 UTCJul 7, 20:57 UTC2h 7m
2026-07-07 DAL1615 GEG → MSP Jul 7, 14:10 UTCJul 7, 16:40 UTC2h 30m
2026-07-07 DAL1466 SLC → GEG Jul 7, 05:35 UTCJul 7, 06:55 UTC1h 20m
2026-07-07 DAL2973 - Jul 7, 02:50 UTCJul 7, 04:10 UTC1h 20m
2026-07-07 DAL2973 LAX → SLC Jul 7, 02:47 UTCJul 7, 04:05 UTC1h 18m
2026-07-07 DAL1161 SLC → LAX Jul 7, 00:10 UTCJul 7, 01:40 UTC1h 30m
2026-07-06 DAL1194 - Jul 6, 18:55 UTCJul 6, 20:15 UTC1h 20m
2026-07-06 DAL1095 - Jul 6, 16:05 UTCJul 6, 17:30 UTC1h 25m
2026-07-06 DAL1095 SLC → LAX Jul 6, 16:01 UTCJul 6, 17:25 UTC1h 24m
2026-07-06 DAL2906 - Jul 6, 12:50 UTCJul 6, 14:15 UTC1h 25m
2026-07-06 DAL2854 SEA → LAX Jul 6, 06:05 UTCJul 6, 08:20 UTC2h 15m
2026-07-06 DAL2854 SEA → LAX Jul 6, 06:05 UTCJul 6, 08:10 UTC2h 5m
2026-07-05 DAL944 MSP → SJC Jul 5, 21:25 UTCJul 6, 01:55 UTC4h 30m
2026-07-05 DAL1519 - Jul 5, 18:15 UTCJul 5, 19:30 UTC1h 15m
2026-07-05 DAL2229 SMF → MSP Jul 5, 13:25 UTCJul 5, 16:25 UTC3h 0m
2026-07-05 DAL574 MSP → SMF Jul 5, 00:10 UTCJul 5, 03:25 UTC3h 15m
2026-07-04 DAL941 SEA → MSP Jul 4, 19:40 UTCJul 4, 22:25 UTC2h 45m
2026-07-04 DAL868 MSP → SEA Jul 4, 14:50 UTCJul 4, 18:05 UTC3h 15m
2026-07-04 DAL2872 - Jul 4, 10:25 UTCJul 4, 12:35 UTC2h 10m

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 N890DN page for operator, model, and routing details .

Mode-S AC45AC frequently asked

What is Mode-S code AC45AC?
AC45AC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N890DN.
Where is Mode-S AC45AC registered?
Mode-S code AC45AC 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 AC45AC 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 AC45AC, octal 53042654, decimal 11,290,028.
What flights does AC45AC operate?
Mode-S AC45AC has broadcast 20 distinct callsigns, including DAL2696, DAL944, DAL1757, DAL1571, DAL2951.