Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A448FC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3752 · BOEING 737-800 · operated by DELTA AIR LINES INC

Hex
A448FC
Octal
51044374
Decimal
10,766,588
Country
US
Tail
N3752
Type
B738
Broadcasting now · callsign DAL2106 · 36,000 ft
Flights observed
452
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Current position

A448FC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A448FC 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
DAL716 - 11 2026-07-10
DAL661 Delta Air Lines 9 2026-07-26
DAL2310 Delta Air Lines 9 2026-04-29
DAL873 - 7 2026-07-08
DAL627 - 7 2026-07-01
DAL2508 - 7 2026-07-21
DAL2411 Delta Air Lines 7 2026-04-29
DAL2226 - 7 2026-06-21
DAL2194 Delta Air Lines 7 2026-04-30
DAL751 Delta Air Lines 6 2026-06-22
DAL626 Delta Air Lines 6 2026-07-01
DAL379 Delta Air Lines 6 2026-05-02
DAL1595 Delta Air Lines 6 2026-05-25
DAL1399 - 6 2026-06-29
DAL856 Delta Air Lines 5 2026-07-09
DAL2613 Delta Air Lines 5 2026-07-22
DAL2526 - 5 2026-07-11
DAL1620 Delta Air Lines 5 2026-07-22
DAL869 Delta Air Lines 4 2026-07-23
DAL704 Delta Air Lines 4 2026-05-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1758 PTY → ATL Jul 26, 20:20 UTCJul 26, 23:00 UTC2h 40m
2026-07-26 DAL1759 ATL → PTY Jul 26, 14:11 UTCJul 26, 17:40 UTC3h 29m
2026-07-26 DAL1759 ATL → PTY Jul 26, 14:15 UTCJul 26, 17:00 UTC2h 45m
2026-07-26 DAL2441 PHL → DTW Jul 26, 09:40 UTCJul 26, 10:40 UTC1h 0m
2026-07-26 DAL661 ATL → BOS Jul 26, 00:20 UTCJul 26, 02:35 UTC2h 15m
2026-07-25 DAL661 ATL → BOS Jul 25, 20:25 UTCJul 25, 22:40 UTC2h 15m
2026-07-25 DAL2774 IAH → DTW Jul 25, 16:35 UTCJul 25, 18:40 UTC2h 5m
2026-07-25 DAL1401 BOS → FLL Jul 25, 12:19 UTCJul 25, 15:07 UTC2h 48m
2026-07-25 DAL1401 BOS → FLL Jul 25, 12:20 UTCJul 25, 15:10 UTC2h 50m
2026-07-24 DAL1205 - Jul 24, 17:55 UTCJul 24, 20:35 UTC2h 40m
2026-07-24 DAL1245 BOS → PBI Jul 24, 13:35 UTCJul 24, 16:05 UTC2h 30m
2026-07-24 DAL1245 - Jul 24, 13:30 UTCJul 24, 16:02 UTC2h 32m
2026-07-24 DAL2801 JFK → LAX Jul 24, 02:15 UTCJul 24, 03:00 UTC45m
2026-07-23 DAL869 SEA → DTW Jul 23, 21:35 UTCJul 24, 00:35 UTC3h 0m
2026-07-23 DAL869 SEA → DTW Jul 23, 17:00 UTCJul 23, 20:05 UTC3h 5m
2026-07-23 DAL2339 - Jul 23, 12:25 UTCJul 23, 15:05 UTC2h 40m
2026-07-22 DAL1620 DTW → JFK Jul 22, 23:10 UTCJul 23, 01:45 UTC2h 35m
2026-07-22 DAL2239 - Jul 22, 19:55 UTCJul 22, 21:25 UTC1h 30m
2026-07-22 DAL2055 - Jul 22, 14:25 UTCJul 22, 17:35 UTC3h 10m
2026-07-22 DAL2613 ORD → LGA Jul 22, 02:20 UTCJul 22, 04:30 UTC2h 10m
2026-07-21 DAL2613 ORD → LGA Jul 21, 22:25 UTCJul 22, 01:05 UTC2h 40m
2026-07-21 DAL2508 SAN → SEA Jul 21, 18:23 UTCJul 21, 20:42 UTC2h 19m
2026-07-21 DAL2508 - Jul 21, 18:25 UTCJul 21, 19:00 UTC35m
2026-07-21 DAL2508 SEA → SAN Jul 21, 14:30 UTCJul 21, 16:55 UTC2h 25m
2026-07-21 DAL2998 TPA → BOS Jul 21, 05:00 UTCJul 21, 06:35 UTC1h 35m
2026-07-21 DAL2149 MSP → BDL Jul 21, 00:25 UTCJul 21, 03:45 UTC3h 20m
2026-07-20 DAL2149 MSP → BDL Jul 20, 19:50 UTCJul 20, 22:50 UTC3h 0m
2026-07-20 DAL1447 - Jul 20, 16:55 UTCJul 20, 18:05 UTC1h 10m
2026-07-20 DAL1447 SLC → PHX Jul 20, 14:15 UTCJul 20, 15:25 UTC1h 10m
2026-07-19 DAL678 - Jul 19, 16:50 UTCJul 19, 20:05 UTC3h 15m
2026-07-19 DAL3160 - Jul 19, 14:30 UTCJul 19, 15:25 UTC55m
2026-07-19 DAL2518 - Jul 19, 11:10 UTCJul 19, 12:40 UTC1h 30m
2026-07-19 DAL2626 ATL → CID Jul 19, 01:45 UTCJul 19, 03:20 UTC1h 35m
2026-07-18 DAL1867 ANU → ATL Jul 18, 19:49 UTCJul 19, 00:04 UTC4h 15m
2026-07-18 DAL1867 ATL → ATL Jul 18, 14:00 UTCJul 19, 00:15 UTC10h 15m
2026-07-18 DAL3085 - Jul 18, 11:30 UTCJul 18, 12:10 UTC40m
2026-07-18 DAL882 - Jul 18, 00:50 UTCJul 18, 01:39 UTC50m
2026-07-18 DAL882 ATL → VPS Jul 18, 00:46 UTCJul 18, 01:32 UTC46m
2026-07-17 DAL1477 - Jul 17, 21:44 UTCJul 17, 23:14 UTC1h 30m
2026-07-17 DAL1477 ATL → ORD Jul 17, 18:05 UTCJul 17, 19:45 UTC1h 40m
2026-07-17 DAL609 CUN → ATL Jul 17, 13:05 UTCJul 17, 15:05 UTC2h 0m
2026-07-16 DAL1939 ATL → CUN Jul 16, 23:49 UTCJul 17, 01:45 UTC1h 55m
2026-07-16 DAL3060 - Jul 16, 19:14 UTCJul 16, 20:00 UTC45m
2026-07-16 DAL3060 - Jul 16, 17:05 UTCJul 16, 17:54 UTC50m
2026-07-16 DAL2232 - Jul 16, 14:25 UTCJul 16, 15:19 UTC55m
2026-07-16 DAL2232 LEX → ATL Jul 16, 14:23 UTCJul 16, 15:15 UTC52m
2026-07-16 DAL2232 ATL → LEX Jul 16, 12:09 UTCJul 16, 13:00 UTC50m
2026-07-15 DAL1816 PVR → ATL Jul 15, 19:48 UTCJul 15, 23:06 UTC3h 18m
2026-07-15 DAL1816 ATL → ATL Jul 15, 14:55 UTCJul 15, 23:10 UTC8h 15m
2026-07-15 DAL1184 - Jul 15, 11:45 UTCJul 15, 13:25 UTC1h 40m

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 N3752 page for operator, model, and routing details .

Mode-S A448FC frequently asked

What is Mode-S code A448FC?
A448FC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3752.
Where is Mode-S A448FC registered?
Mode-S code A448FC 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 A448FC broadcasting right now?
Yes. Mode-S A448FC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A448FC, octal 51044374, decimal 10,766,588.
What flights does A448FC operate?
Mode-S A448FC has broadcast 20 distinct callsigns, including DAL716, DAL661, DAL2310, DAL873, DAL627.