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 DAL1264 · 33,000 ft
Flights observed
395
Distinct callsigns
20
Country
US
Last broadcast
6h ago

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
DAL2310 Delta Air Lines 9 2026-04-29
DAL873 - 7 2026-07-08
DAL661 - 7 2026-07-06
DAL627 - 7 2026-07-01
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
DAL2526 - 5 2026-07-11
DAL704 Delta Air Lines 4 2026-05-07
DAL588 Delta Air Lines 4 2026-05-04
DAL2917 Delta Air Lines 4 2026-05-28
DAL2905 Delta Air Lines 4 2026-04-14
DAL2536 - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL1634 - Jul 14, 01:35 UTCJul 14, 05:15 UTC3h 40m
2026-07-13 DAL2725 - Jul 13, 23:35 UTCJul 14, 00:35 UTC1h 0m
2026-07-13 DAL2725 - Jul 13, 21:05 UTCJul 13, 21:55 UTC50m
2026-07-13 DAL2769 SEA → LAX Jul 13, 17:15 UTCJul 13, 19:45 UTC2h 30m
2026-07-13 DAL2874 SLC → SEA Jul 13, 14:05 UTCJul 13, 15:35 UTC1h 30m
2026-07-13 DAL1239 SEA → SLC Jul 13, 03:07 UTCJul 13, 04:39 UTC1h 32m
2026-07-13 DAL1239 SEA → SLC Jul 13, 03:10 UTCJul 13, 04:45 UTC1h 35m
2026-07-12 DAL922 ANC → SEA Jul 12, 22:25 UTCJul 13, 01:35 UTC3h 10m
2026-07-12 DAL922 SEA → ANC Jul 12, 17:50 UTCJul 12, 20:55 UTC3h 5m
2026-07-12 DAL2041 PWK → SEA Jul 12, 12:15 UTCJul 12, 16:10 UTC3h 55m
2026-07-11 DAL1305 - Jul 11, 20:55 UTCJul 11, 21:05 UTC10m
2026-07-11 DAL1305 LGA → ORD Jul 11, 19:00 UTCJul 11, 20:39 UTC1h 39m
2026-07-11 DAL1305 - Jul 11, 19:00 UTCJul 11, 20:55 UTC1h 55m
2026-07-11 DAL2526 - Jul 11, 14:50 UTCJul 11, 17:25 UTC2h 35m
2026-07-11 DAL2536 - Jul 11, 11:05 UTCJul 11, 13:15 UTC2h 10m
2026-07-11 DAL2536 - Jul 11, 11:03 UTCJul 11, 13:12 UTC2h 9m
2026-07-10 DAL716 DEN → LGA Jul 10, 23:40 UTCJul 11, 02:35 UTC2h 55m
2026-07-10 DAL716 LGA → DEN Jul 10, 18:45 UTCJul 10, 22:20 UTC3h 35m
2026-07-10 DAL398 DEN → LGA Jul 10, 13:30 UTCJul 10, 16:30 UTC3h 0m
2026-07-10 DAL710 LGA → DEN Jul 10, 01:38 UTCJul 10, 05:20 UTC3h 42m
2026-07-10 DAL710 LGA → DEN Jul 10, 01:40 UTCJul 10, 05:30 UTC3h 50m
2026-07-09 DAL856 DTW → IAH Jul 9, 19:20 UTCJul 9, 22:35 UTC3h 15m
2026-07-09 DAL856 DTW → IAH Jul 9, 13:50 UTCJul 9, 16:55 UTC3h 5m
2026-07-09 DAL2770 BOS → LGA Jul 9, 11:15 UTCJul 9, 12:00 UTC45m
2026-07-09 DAL522 - Jul 9, 03:40 UTCJul 9, 03:55 UTC15m
2026-07-09 DAL522 - Jul 9, 00:50 UTCJul 9, 03:30 UTC2h 40m
2026-07-08 DAL2321 LGA → FLL Jul 8, 21:05 UTCJul 8, 23:30 UTC2h 25m
2026-07-08 DAL873 DFW → LGA Jul 8, 15:55 UTCJul 8, 19:00 UTC3h 5m
2026-07-08 DAL873 LGA → DFW Jul 8, 11:15 UTCJul 8, 14:25 UTC3h 10m
2026-07-08 DAL716 BOS → ATL Jul 8, 00:30 UTCJul 8, 03:55 UTC3h 25m
2026-07-08 DAL716 BOS → ATL Jul 8, 00:28 UTCJul 8, 03:49 UTC3h 21m
2026-07-07 DAL716 BOS → ATL Jul 7, 19:35 UTCJul 7, 23:10 UTC3h 35m
2026-07-07 DAL2526 PBI → LGA Jul 7, 15:25 UTCJul 7, 17:45 UTC2h 20m
2026-07-07 DAL2536 LGA → PBI Jul 7, 11:35 UTCJul 7, 13:55 UTC2h 20m
2026-07-07 DAL2336 ATL → TLH Jul 7, 01:45 UTCJul 7, 03:35 UTC1h 50m
2026-07-07 DAL2336 ATL → TLH Jul 7, 01:41 UTCJul 7, 03:36 UTC1h 55m
2026-07-06 DAL2377 - Jul 6, 20:35 UTCJul 6, 23:10 UTC2h 35m
2026-07-06 DAL1971 PUJ → BOS Jul 6, 18:15 UTCJul 6, 19:09 UTC54m
2026-07-06 DAL1971 PUJ → BOS Jul 6, 16:10 UTCJul 6, 19:15 UTC3h 5m
2026-07-06 DAL2876 - Jul 6, 11:15 UTCJul 6, 14:20 UTC3h 5m
2026-07-06 DAL661 - Jul 6, 00:20 UTCJul 6, 02:25 UTC2h 5m
2026-07-05 DAL661 - Jul 5, 20:00 UTCJul 5, 22:10 UTC2h 10m
2026-07-05 DAL2774 IAH → DTW Jul 5, 16:25 UTCJul 5, 18:25 UTC2h 0m
2026-07-05 DAL1401 BOS → FLL Jul 5, 12:25 UTCJul 5, 15:05 UTC2h 40m
2026-07-04 DAL2170 - Jul 4, 18:45 UTCJul 4, 21:20 UTC2h 35m
2026-07-04 DAL2160 - Jul 4, 14:05 UTCJul 4, 16:50 UTC2h 45m
2026-07-02 DAL2170 - Jul 2, 18:10 UTCJul 2, 20:50 UTC2h 40m
2026-07-02 DAL2170 PBI → BOS Jul 2, 18:06 UTCJul 2, 20:51 UTC2h 45m
2026-07-02 DAL2160 - Jul 2, 13:45 UTCJul 2, 16:30 UTC2h 45m
2026-07-01 DAL626 CUN → BOS Jul 1, 18:45 UTCJul 1, 22:40 UTC3h 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 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, DAL2310, DAL873, DAL661, DAL627.