Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A44B56

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N376NW · AIRBUS A-320 · operated by DELTA AIR LINES INC

Hex
A44B56
Octal
51045526
Decimal
10,767,190
Country
US
Tail
N376NW
Type
A320
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
577
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A44B56.

Country allocation

The ICAO 24-bit address A44B56 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
DAL2982 Delta Air Lines 10 2026-06-16
DAL2062 - 10 2026-06-23
DAL1276 Delta Air Lines 10 2026-07-26
DAL414 Delta Air Lines 8 2026-04-16
DAL2687 Delta Air Lines 8 2026-05-27
DAL1728 - 8 2026-07-13
DAL2796 Delta Air Lines 7 2026-06-13
DAL2749 - 7 2026-06-17
DAL2492 Delta Air Lines 7 2026-06-16
DAL1509 - 7 2026-07-13
DAL1382 - 7 2026-07-14
DAL1375 Delta Air Lines 7 2026-07-22
DAL1053 Delta Air Lines 7 2026-07-25
DAL775 - 6 2026-07-17
DAL2996 Delta Air Lines 6 2026-07-02
DAL2958 - 6 2026-07-03
DAL2800 Delta Air Lines 6 2026-06-05
DAL2783 - 6 2026-06-30
DAL2519 - 6 2026-07-01
DAL2463 Delta Air Lines 6 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2463 MIA → DCA Jul 26, 19:25 UTCJul 26, 21:30 UTC2h 5m
2026-07-26 DAL2463 MIA → DCA Jul 26, 15:45 UTCJul 26, 17:55 UTC2h 10m
2026-07-26 DAL1276 DFW → MSP Jul 26, 12:11 UTCJul 26, 14:14 UTC2h 3m
2026-07-26 DAL1276 DFW → MSP Jul 26, 12:10 UTCJul 26, 14:20 UTC2h 10m
2026-07-26 DAL818 ATL → DFW Jul 26, 02:45 UTCJul 26, 04:25 UTC1h 40m
2026-07-26 DAL818 ATL → DFW Jul 26, 02:44 UTCJul 26, 04:31 UTC1h 47m
2026-07-25 DAL1053 DEN → CVG Jul 25, 23:05 UTCJul 26, 01:05 UTC2h 0m
2026-07-25 DAL1053 DEN → CVG Jul 25, 19:55 UTCJul 25, 22:00 UTC2h 5m
2026-07-25 DAL2511 ATL → BOS Jul 25, 16:45 UTCJul 25, 18:25 UTC1h 40m
2026-07-25 DAL2511 ATL → BOS Jul 25, 13:35 UTCJul 25, 15:20 UTC1h 45m
2026-07-25 DAL1223 ATL → IAH Jul 25, 00:10 UTCJul 25, 01:45 UTC1h 35m
2026-07-25 DAL1223 ATL → IAH Jul 25, 00:09 UTCJul 25, 01:45 UTC1h 36m
2026-07-24 DAL1223 ATL → IAH Jul 24, 21:05 UTCJul 24, 22:45 UTC1h 40m
2026-07-24 DAL1682 BOS → JFK Jul 24, 17:25 UTCJul 24, 19:15 UTC1h 50m
2026-07-24 DAL1682 BOS → JFK Jul 24, 14:20 UTCJul 24, 15:55 UTC1h 35m
2026-07-24 DAL2557 SNA → SEA Jul 24, 11:10 UTCJul 24, 12:50 UTC1h 40m
2026-07-24 DAL2557 SNA → SEA Jul 24, 11:07 UTCJul 24, 12:44 UTC1h 37m
2026-07-24 DAL2051 SLC → OAK Jul 24, 01:20 UTCJul 24, 03:00 UTC1h 40m
2026-07-23 DAL2537 BOS → RDU Jul 23, 15:50 UTCJul 23, 22:10 UTC6h 20m
2026-07-23 DAL1157 ATL → CVG Jul 23, 12:10 UTCJul 23, 13:55 UTC1h 45m
2026-07-23 DAL2010 BOS → MCI Jul 23, 02:40 UTCJul 23, 04:30 UTC1h 50m
2026-07-23 DAL2010 BOS → MCI Jul 23, 02:34 UTCJul 23, 04:24 UTC1h 50m
2026-07-22 DAL850 SEA → TPA Jul 22, 23:30 UTCJul 23, 00:50 UTC1h 20m
2026-07-22 DAL850 SEA → TPA Jul 22, 19:50 UTCJul 22, 21:10 UTC1h 20m
2026-07-22 DAL1375 ATL → SYR Jul 22, 16:35 UTCJul 22, 18:25 UTC1h 50m
2026-07-22 DAL1375 ATL → SYR Jul 22, 16:29 UTCJul 22, 18:18 UTC1h 49m
2026-07-22 DAL1375 ATL → SYR Jul 22, 13:30 UTCJul 22, 15:05 UTC1h 35m
2026-07-21 DAL1676 SAT → ATL Jul 21, 17:05 UTCJul 21, 18:55 UTC1h 50m
2026-07-21 DAL1676 SAT → ATL Jul 21, 13:50 UTCJul 21, 15:40 UTC1h 50m
2026-07-21 DAL330 DCA → ATL Jul 21, 11:15 UTCJul 21, 12:40 UTC1h 25m
2026-07-21 DAL378 ATL → DCA Jul 21, 01:41 UTCJul 21, 03:05 UTC1h 24m
2026-07-21 DAL378 ATL → DCA Jul 21, 01:45 UTCJul 21, 03:10 UTC1h 25m
2026-07-20 DAL2479 RDU → BOS Jul 20, 19:45 UTCJul 20, 21:55 UTC2h 10m
2026-07-20 DAL2479 RDU → BOS Jul 20, 16:00 UTCJul 20, 18:15 UTC2h 15m
2026-07-20 DAL2557 HOU → ATL Jul 20, 13:05 UTCJul 20, 14:45 UTC1h 40m
2026-07-20 DAL2051 ATL → HOU Jul 20, 02:40 UTCJul 20, 04:10 UTC1h 30m
2026-07-19 DAL2991 SYR → ATL Jul 19, 20:00 UTCJul 19, 21:40 UTC1h 40m
2026-07-19 DAL2991 SYR → ATL Jul 19, 16:35 UTCJul 19, 18:15 UTC1h 40m
2026-07-19 DAL998 MSP → ORD Jul 19, 12:45 UTCJul 19, 14:45 UTC2h 0m
2026-07-19 DAL998 MSP → ORD Jul 19, 12:42 UTCJul 19, 14:43 UTC2h 1m
2026-07-19 DAL1508 ATL → SAT Jul 19, 04:45 UTCJul 19, 06:35 UTC1h 50m
2026-07-18 DAL2009 BOS → RSW Jul 18, 22:15 UTCJul 19, 00:35 UTC2h 20m
2026-07-18 DAL2009 BOS → RSW Jul 18, 18:55 UTCJul 18, 21:00 UTC2h 5m
2026-07-18 DAL1585 - Jul 18, 15:05 UTCJul 18, 16:40 UTC1h 35m
2026-07-18 DAL1585 - Jul 18, 11:45 UTCJul 18, 13:20 UTC1h 35m
2026-07-18 DAL832 - Jul 18, 03:50 UTCJul 18, 05:05 UTC1h 15m
2026-07-18 DAL832 ATL → DCA Jul 18, 01:20 UTCJul 18, 02:45 UTC1h 25m
2026-07-17 DAL775 - Jul 17, 18:40 UTCJul 17, 20:00 UTC1h 20m
2026-07-17 DAL775 CLE → ATL Jul 17, 18:36 UTCJul 17, 19:59 UTC1h 23m
2026-07-17 DAL775 ATL → CLE Jul 17, 16:00 UTCJul 17, 17:20 UTC1h 20m

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 N376NW page for operator, model, and routing details .

Mode-S A44B56 frequently asked

What is Mode-S code A44B56?
A44B56 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N376NW.
Where is Mode-S A44B56 registered?
Mode-S code A44B56 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 A44B56 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A44B56, octal 51045526, decimal 10,767,190.
What flights does A44B56 operate?
Mode-S A44B56 has broadcast 20 distinct callsigns, including DAL2982, DAL2062, DAL1276, DAL414, DAL2687.