Apparatus

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sensors Mode-S transponder

A44E1C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N377DE · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A44E1C
Octal
51047034
Decimal
10,767,900
Country
US
Tail
N377DE
Type
B738
Broadcasting now · callsign DAL2298 · 34,000 ft
Flights observed
492
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Current position

A44E1C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A44E1C 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
DAL922 Delta Air Lines 7 2026-07-19
DAL2507 - 7 2026-06-24
DAL1790 - 7 2026-06-24
DAL1789 - 7 2026-06-24
DAL2344 - 6 2026-06-24
DAL2194 Delta Air Lines 6 2026-05-05
DAL1564 - 6 2026-07-20
DAL1439 - 6 2026-07-09
DAL704 Delta Air Lines 5 2026-04-27
DAL511 - 5 2026-07-02
DAL2725 Delta Air Lines 5 2026-07-22
DAL2226 Delta Air Lines 5 2026-05-05
DAL1679 - 5 2026-07-02
DAL1421 Delta Air Lines 5 2026-07-22
DAL1324 Delta Air Lines 5 2026-04-27
DAL967 - 4 2026-06-30
DAL8963 Delta Air Lines 4 2026-05-31
DAL873 Delta Air Lines 4 2026-06-08
DAL776 - 4 2026-07-11
DAL716 Delta Air Lines 4 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1941 ATL → PVR Jul 26, 14:50 UTCJul 26, 23:00 UTC8h 10m
2026-07-26 DAL3105 IND → ATL Jul 26, 10:10 UTCJul 26, 11:10 UTC1h 0m
2026-07-25 DAL3120 IND → ATL Jul 25, 21:50 UTCJul 25, 22:55 UTC1h 5m
2026-07-25 DAL3092 VPS → ATL Jul 25, 18:50 UTCJul 25, 20:20 UTC1h 30m
2026-07-25 DAL3092 VPS → ATL Jul 25, 18:46 UTCJul 25, 20:14 UTC1h 28m
2026-07-25 DAL3092 VPS → ATL Jul 25, 16:25 UTCJul 25, 17:15 UTC50m
2026-07-25 DAL1436 ATW → ATL Jul 25, 10:35 UTCJul 25, 12:20 UTC1h 45m
2026-07-25 DAL2945 BNA → BOS Jul 25, 01:30 UTCJul 25, 03:20 UTC1h 50m
2026-07-24 DAL1758 PTY → ATL Jul 24, 20:05 UTCJul 24, 23:15 UTC3h 10m
2026-07-24 DAL1759 - Jul 24, 14:15 UTCJul 24, 15:45 UTC1h 30m
2026-07-24 DAL1759 ATL → PTY Jul 24, 14:11 UTCJul 24, 17:49 UTC3h 38m
2026-07-23 DAL3149 ATL → CVG Jul 23, 17:40 UTCJul 23, 18:45 UTC1h 5m
2026-07-23 DAL3149 ATL → CVG Jul 23, 15:20 UTCJul 23, 16:15 UTC55m
2026-07-23 DAL1264 ATL → HNL Jul 23, 10:40 UTCJul 23, 12:00 UTC1h 20m
2026-07-23 DAL1634 COS → ATL Jul 23, 00:30 UTCJul 23, 03:55 UTC3h 25m
2026-07-23 DAL1634 COS → ATL Jul 23, 00:27 UTCJul 23, 03:52 UTC3h 25m
2026-07-22 DAL2725 ATL → AUS Jul 22, 21:57 UTCJul 22, 22:55 UTC58m
2026-07-22 DAL2725 ATL → AUS Jul 22, 22:00 UTCJul 22, 23:00 UTC1h 0m
2026-07-22 DAL2725 ATL → AUS Jul 22, 19:15 UTCJul 22, 20:10 UTC55m
2026-07-22 DAL1421 PHL → ATL Jul 22, 16:50 UTCJul 22, 17:50 UTC1h 0m
2026-07-22 DAL1421 PHL → ATL Jul 22, 14:10 UTCJul 22, 15:05 UTC55m
2026-07-22 DAL2861 ATL → CMH Jul 22, 03:10 UTCJul 22, 05:25 UTC2h 15m
2026-07-21 DAL2572 LAX → SEA Jul 21, 23:31 UTCJul 22, 01:50 UTC2h 19m
2026-07-21 DAL2572 LAX → SEA Jul 21, 23:35 UTCJul 22, 01:45 UTC2h 10m
2026-07-21 DAL2572 LAX → SEA Jul 21, 19:45 UTCJul 21, 22:10 UTC2h 25m
2026-07-21 DAL1605 JFK → TPA Jul 21, 15:55 UTCJul 21, 18:00 UTC2h 5m
2026-07-21 DAL2169 - Jul 21, 00:35 UTCJul 21, 01:00 UTC25m
2026-07-21 DAL2169 SEA → JNU Jul 21, 00:35 UTCJul 21, 02:35 UTC2h 0m
2026-07-20 DAL1564 ORD → SEA Jul 20, 18:55 UTCJul 20, 22:55 UTC4h 0m
2026-07-20 DAL2247 SLC → ORD Jul 20, 14:15 UTCJul 20, 17:00 UTC2h 45m
2026-07-20 DAL2247 SLC → ORD Jul 20, 14:14 UTCJul 20, 16:48 UTC2h 34m
2026-07-20 DAL1239 SEA → SLC Jul 20, 03:05 UTCJul 20, 04:40 UTC1h 35m
2026-07-19 DAL922 BOS → PHX Jul 19, 22:15 UTCJul 20, 01:20 UTC3h 5m
2026-07-19 DAL922 BOS → PHX Jul 19, 17:50 UTCJul 19, 20:55 UTC3h 5m
2026-07-18 DAL922 BOS → PHX Jul 18, 23:00 UTCJul 19, 01:55 UTC2h 55m
2026-07-18 DAL922 BOS → PHX Jul 18, 18:25 UTCJul 18, 21:40 UTC3h 15m
2026-07-17 DAL922 ANC → SEA Jul 17, 22:15 UTCJul 18, 01:20 UTC3h 5m
2026-07-17 DAL922 ANC → SEA Jul 17, 22:15 UTCJul 18, 01:21 UTC3h 6m
2026-07-17 DAL922 SEA → ANC Jul 17, 18:00 UTCJul 17, 21:00 UTC3h 0m
2026-07-17 DAL2041 ORD → SEA Jul 17, 12:15 UTCJul 17, 16:00 UTC3h 45m
2026-07-17 DAL1634 - Jul 17, 01:15 UTCJul 17, 04:59 UTC3h 45m
2026-07-16 DAL2725 - Jul 16, 22:10 UTCJul 16, 23:15 UTC1h 5m
2026-07-16 DAL2725 - Jul 16, 19:14 UTCJul 16, 20:05 UTC50m
2026-07-16 DAL1421 - Jul 16, 16:55 UTCJul 16, 17:54 UTC1h 0m
2026-07-16 DAL1421 SFO → LAX Jul 16, 16:53 UTCJul 16, 17:45 UTC52m
2026-07-16 DAL1421 - Jul 16, 14:55 UTCJul 16, 15:49 UTC55m
2026-07-16 DAL2298 - Jul 16, 00:25 UTCJul 16, 04:05 UTC3h 40m
2026-07-15 DAL2368 - Jul 15, 18:45 UTCJul 15, 22:25 UTC3h 40m
2026-07-15 DAL2368 LAX → ORD Jul 15, 18:43 UTCJul 15, 22:25 UTC3h 42m
2026-07-15 DAL2085 MSY → LAX Jul 15, 13:25 UTCJul 15, 16:50 UTC3h 25m

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 N377DE page for operator, model, and routing details .

Mode-S A44E1C frequently asked

What is Mode-S code A44E1C?
A44E1C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N377DE.
Where is Mode-S A44E1C registered?
Mode-S code A44E1C 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 A44E1C broadcasting right now?
Yes. Mode-S A44E1C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A44E1C, octal 51047034, decimal 10,767,900.
What flights does A44E1C operate?
Mode-S A44E1C has broadcast 20 distinct callsigns, including DAL922, DAL2507, DAL1790, DAL1789, DAL2344.