Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A448BA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3750D · BOEING 737-800 · operated by DELTA AIR LINES INC

Hex
A448BA
Octal
51044272
Decimal
10,766,522
Country
US
Tail
N3750D
Type
B738
No current signal · last broadcast Jul 26, 18:50 UTC
Flights observed
505
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:50 UTC

Last known position

Most recent position reported by Mode-S A448BA.

Country allocation

The ICAO 24-bit address A448BA 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
DAL2880 - 14 2026-07-15
DAL2698 - 9 2026-07-16
DAL1570 - 7 2026-07-16
DAL1399 - 7 2026-06-19
DAL1696 Delta Air Lines 6 2026-07-24
DAL2606 Delta Air Lines 5 2026-06-01
DAL2377 - 5 2026-07-21
DAL2368 Delta Air Lines 5 2026-07-22
DAL2120 Delta Air Lines 5 2026-07-25
DAL1841 Delta Air Lines 5 2026-05-25
DAL1679 - 5 2026-06-17
DAL1265 - 5 2026-07-16
DAL787 Delta Air Lines 4 2026-05-07
DAL577 Delta Air Lines 4 2026-05-04
DAL2725 Delta Air Lines 4 2026-07-23
DAL2714 Delta Air Lines 4 2026-05-26
DAL2100 - 4 2026-07-19
DAL2041 - 4 2026-07-13
DAL1985 Delta Air Lines 4 2026-05-08
DAL1906 Delta Air Lines 4 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1948 SLC → PVR Jul 26, 17:05 UTCJul 26, 18:50 UTC1h 45m
2026-07-26 DAL2142 MSP → PHX Jul 26, 11:45 UTCJul 26, 15:10 UTC3h 25m
2026-07-26 DAL2142 MSP → PHX Jul 26, 11:41 UTCJul 26, 15:08 UTC3h 27m
2026-07-25 DAL2230 DEN → DTW Jul 25, 21:40 UTCJul 26, 00:35 UTC2h 55m
2026-07-25 DAL1194 DTW → EWR Jul 25, 18:45 UTCJul 25, 20:05 UTC1h 20m
2026-07-25 DAL1194 DTW → EWR Jul 25, 18:44 UTCJul 25, 20:03 UTC1h 19m
2026-07-25 DAL2947 LAX → PDX Jul 25, 15:05 UTCJul 25, 17:10 UTC2h 5m
2026-07-25 DAL2947 LAX → PDX Jul 25, 15:04 UTCJul 25, 17:06 UTC2h 2m
2026-07-25 DAL2457 JFK → FLL Jul 25, 03:05 UTCJul 25, 04:45 UTC1h 40m
2026-07-25 DAL2120 LAX → LAS Jul 25, 01:05 UTCJul 25, 01:45 UTC40m
2026-07-24 DAL2120 LAX → LAS Jul 24, 23:05 UTCJul 24, 23:50 UTC45m
2026-07-24 DAL1696 GSP → DTW Jul 24, 21:00 UTCJul 24, 21:45 UTC45m
2026-07-24 DAL1696 GSP → DTW Jul 24, 18:05 UTCJul 24, 18:50 UTC45m
2026-07-24 DAL1556 RSW → LGA Jul 24, 13:10 UTCJul 24, 16:50 UTC3h 40m
2026-07-24 DAL1634 COS → ATL Jul 24, 00:20 UTCJul 24, 04:05 UTC3h 45m
2026-07-23 DAL2725 ATL → AUS Jul 23, 22:10 UTCJul 23, 23:10 UTC1h 0m
2026-07-23 DAL2725 ATL → AUS Jul 23, 19:40 UTCJul 23, 20:35 UTC55m
2026-07-23 DAL1421 PHL → ATL Jul 23, 16:40 UTCJul 23, 17:40 UTC1h 0m
2026-07-23 DAL1421 PHL → ATL Jul 23, 14:35 UTCJul 23, 15:20 UTC45m
2026-07-23 DAL2298 ATL → PHL Jul 23, 00:15 UTCJul 23, 04:05 UTC3h 50m
2026-07-22 DAL2368 ATL → MSY Jul 22, 18:45 UTCJul 22, 22:15 UTC3h 30m
2026-07-22 DAL2368 ATL → MSY Jul 22, 18:41 UTCJul 22, 22:07 UTC3h 26m
2026-07-22 DAL1556 RSW → LGA Jul 22, 12:55 UTCJul 22, 16:40 UTC3h 45m
2026-07-21 DAL2377 SLC → ORD Jul 21, 21:15 UTCJul 21, 23:50 UTC2h 35m
2026-07-21 DAL1971 SLC → SLC Jul 21, 16:20 UTCJul 21, 19:15 UTC2h 55m
2026-07-21 DAL2876 - Jul 21, 11:25 UTCJul 21, 14:40 UTC3h 15m
2026-07-21 DAL661 ATL → BOS Jul 21, 01:00 UTCJul 21, 03:10 UTC2h 10m
2026-07-20 DAL661 ATL → BOS Jul 20, 21:35 UTCJul 20, 23:35 UTC2h 0m
2026-07-20 DAL2774 PPM → CVG Jul 20, 18:05 UTCJul 20, 20:10 UTC2h 5m
2026-07-20 DAL2774 FLL → CVG Jul 20, 18:02 UTCJul 20, 20:03 UTC2h 1m
2026-07-20 DAL1401 BOS → FLL Jul 20, 13:55 UTCJul 20, 16:40 UTC2h 45m
2026-07-19 DAL1328 CVG → BOS Jul 19, 21:40 UTCJul 20, 01:10 UTC3h 30m
2026-07-19 DAL2100 SLC → MSY Jul 19, 17:35 UTCJul 19, 20:35 UTC3h 0m
2026-07-19 DAL1650 - Jul 19, 12:45 UTCJul 19, 13:45 UTC1h 0m
2026-07-19 DAL1650 RNO → SLC Jul 19, 12:41 UTCJul 19, 13:41 UTC1h 0m
2026-07-19 DAL1607 ATL → CVG Jul 19, 03:45 UTCJul 19, 04:40 UTC55m
2026-07-18 DAL1838 - Jul 18, 22:55 UTCJul 19, 00:45 UTC1h 50m
2026-07-18 DAL1838 PVR → SLC Jul 18, 21:44 UTCJul 19, 00:42 UTC2h 58m
2026-07-18 DAL1948 SLC → PVR Jul 18, 17:38 UTCJul 18, 20:41 UTC3h 3m
2026-07-18 DAL1948 - Jul 18, 17:40 UTCJul 18, 19:30 UTC1h 50m
2026-07-17 DAL1595 SLC → SLC Jul 17, 17:55 UTCJul 17, 23:25 UTC5h 30m
2026-07-17 DAL1068 - Jul 17, 12:45 UTCJul 17, 15:44 UTC3h 0m
2026-07-17 DAL1068 BNA → SLC Jul 17, 12:43 UTCJul 17, 15:38 UTC2h 55m
2026-07-17 DAL2317 SLC → BNA Jul 17, 01:05 UTCJul 17, 04:10 UTC3h 5m
2026-07-16 DAL1265 SEA → SLC Jul 16, 22:22 UTCJul 16, 23:57 UTC1h 35m
2026-07-16 DAL1265 SEA → SLC Jul 16, 22:25 UTCJul 16, 23:59 UTC1h 35m
2026-07-16 DAL1570 - Jul 16, 14:10 UTCJul 16, 16:49 UTC2h 40m
2026-07-16 DAL2698 SEA → PHX Jul 16, 01:40 UTCJul 16, 04:15 UTC2h 35m
2026-07-16 DAL2698 SEA → PHX Jul 16, 01:39 UTCJul 16, 04:10 UTC2h 31m
2026-07-15 DAL2880 LAS → SEA Jul 15, 21:40 UTCJul 15, 23:35 UTC1h 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 N3750D page for operator, model, and routing details .

Mode-S A448BA frequently asked

What is Mode-S code A448BA?
A448BA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3750D.
Where is Mode-S A448BA registered?
Mode-S code A448BA 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 A448BA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A448BA, octal 51044272, decimal 10,766,522.
What flights does A448BA operate?
Mode-S A448BA has broadcast 20 distinct callsigns, including DAL2880, DAL2698, DAL1570, DAL1399, DAL1696.