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 2h ago
Flights observed
450
Distinct callsigns
20
Country
US
Last broadcast
2h ago

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 - 12 2026-07-10
DAL2698 - 7 2026-06-27
DAL1399 - 7 2026-06-19
DAL1570 Delta Air Lines 6 2026-06-27
DAL2606 Delta Air Lines 5 2026-06-01
DAL1841 Delta Air Lines 5 2026-05-25
DAL1679 - 5 2026-06-17
DAL787 Delta Air Lines 4 2026-05-07
DAL577 Delta Air Lines 4 2026-05-04
DAL2714 Delta Air Lines 4 2026-05-26
DAL2377 - 4 2026-07-12
DAL2041 - 4 2026-07-13
DAL1985 Delta Air Lines 4 2026-05-08
DAL1906 Delta Air Lines 4 2026-05-24
DAL1696 - 4 2026-07-09
DAL1628 - 4 2026-07-14
DAL1514 - 4 2026-06-20
DAL1439 - 4 2026-06-19
DAL1239 Delta Air Lines 4 2026-04-21
DAL967 Delta Air Lines 3 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL1628 SEA → LAX Jul 14, 14:26 UTCJul 14, 16:45 UTC2h 19m
2026-07-14 DAL1628 - Jul 14, 14:25 UTCJul 14, 16:30 UTC2h 5m
2026-07-14 DAL922 ANC → SEA Jul 14, 02:10 UTCJul 14, 05:05 UTC2h 55m
2026-07-13 DAL922 SEA → ANC Jul 13, 17:55 UTCJul 13, 21:10 UTC3h 15m
2026-07-13 DAL2041 - Jul 13, 12:05 UTCJul 13, 15:55 UTC3h 50m
2026-07-13 DAL2041 ORD → SEA Jul 13, 12:04 UTCJul 13, 15:55 UTC3h 51m
2026-07-12 DAL2377 SLC → ORD Jul 12, 20:50 UTCJul 12, 23:25 UTC2h 35m
2026-07-12 DAL2377 SLC → ORD Jul 12, 20:50 UTCJul 12, 23:26 UTC2h 36m
2026-07-12 DAL1971 BZN → SLC Jul 12, 18:18 UTCJul 12, 19:11 UTC53m
2026-07-12 DAL1971 - Jul 12, 16:05 UTCJul 12, 16:35 UTC30m
2026-07-12 DAL1581 DEN → SLC Jul 12, 13:15 UTCJul 12, 14:15 UTC1h 0m
2026-07-12 DAL1581 DEN → SLC Jul 12, 13:15 UTCJul 12, 14:17 UTC1h 2m
2026-07-11 DAL716 LGA → DEN Jul 11, 18:55 UTCJul 11, 22:25 UTC3h 30m
2026-07-11 DAL398 DEN → LGA Jul 11, 13:55 UTCJul 11, 17:10 UTC3h 15m
2026-07-11 DAL398 DEN → LGA Jul 11, 13:51 UTCJul 11, 17:08 UTC3h 17m
2026-07-11 DAL710 LGA → DEN Jul 11, 01:27 UTCJul 11, 05:10 UTC3h 43m
2026-07-11 DAL710 LGA → DEN Jul 11, 01:30 UTCJul 11, 05:15 UTC3h 45m
2026-07-10 DAL2239 - Jul 10, 20:05 UTCJul 10, 22:00 UTC1h 55m
2026-07-10 DAL2055 SEA → ORD Jul 10, 14:35 UTCJul 10, 18:15 UTC3h 40m
2026-07-10 DAL2880 LAS → SEA Jul 10, 04:00 UTCJul 10, 06:00 UTC2h 0m
2026-07-09 DAL1696 - Jul 9, 18:20 UTCJul 9, 19:10 UTC50m
2026-07-09 DAL1556 - Jul 9, 12:40 UTCJul 9, 16:20 UTC3h 40m
2026-07-09 DAL2806 LGA → ORD Jul 9, 01:00 UTCJul 9, 02:45 UTC1h 45m
2026-07-08 DAL2106 TPA → LGA Jul 8, 20:35 UTCJul 8, 22:55 UTC2h 20m
2026-07-08 DAL2106 LGA → TPA Jul 8, 16:40 UTCJul 8, 19:00 UTC2h 20m
2026-07-08 DAL2339 - Jul 8, 12:20 UTCJul 8, 14:45 UTC2h 25m
2026-07-07 DAL1620 LGA → MIA Jul 7, 22:40 UTCJul 8, 01:03 UTC2h 23m
2026-07-07 DAL1620 LGA → MIA Jul 7, 22:40 UTCJul 8, 01:10 UTC2h 30m
2026-07-07 DAL751 MSP → SEA Jul 7, 17:10 UTCJul 7, 20:30 UTC3h 20m
2026-07-07 DAL751 MSP → SEA Jul 7, 12:10 UTCJul 7, 15:40 UTC3h 30m
2026-07-07 DAL846 DFW → LGA Jul 7, 00:35 UTCJul 7, 03:30 UTC2h 55m
2026-07-06 DAL846A LGA → DFW Jul 6, 19:40 UTCJul 6, 22:45 UTC3h 5m
2026-07-06 DAL2336 ATL → TLH Jul 6, 17:25 UTCJul 6, 18:20 UTC55m
2026-07-05 DAL2336 ATL → TLH Jul 5, 23:40 UTCJul 6, 01:40 UTC2h 0m
2026-07-05 DAL2240 LGA → ORD Jul 5, 17:25 UTCJul 5, 19:35 UTC2h 10m
2026-07-05 DAL2770 - Jul 5, 12:15 UTCJul 5, 13:05 UTC50m
2026-07-05 DAL2770 BOS → LGA Jul 5, 12:13 UTCJul 5, 12:55 UTC42m
2026-07-04 DAL2745 LGA → BOS Jul 4, 23:20 UTCJul 4, 23:55 UTC35m
2026-07-04 DAL2745 LGA → BOS Jul 4, 23:15 UTCJul 4, 23:55 UTC40m
2026-07-04 DAL2194 BDL → ATL Jul 4, 20:15 UTCJul 4, 21:30 UTC1h 15m
2026-07-04 DAL2194 BDL → ATL Jul 4, 20:09 UTCJul 4, 21:27 UTC1h 18m
2026-07-04 DAL2194 BDL → ATL Jul 4, 17:45 UTCJul 4, 18:55 UTC1h 10m
2026-07-04 DAL846 DFW → LGA Jul 4, 00:05 UTCJul 4, 03:25 UTC3h 20m
2026-07-03 DAL846 LGA → DFW Jul 3, 19:25 UTCJul 3, 22:30 UTC3h 5m
2026-07-03 DAL379 ATL → LGA Jul 3, 15:30 UTCJul 3, 18:05 UTC2h 35m
2026-07-03 DAL379 ATL → LGA Jul 3, 15:27 UTCJul 3, 17:47 UTC2h 20m
2026-07-03 DAL379 ATL → LGA Jul 3, 11:55 UTCJul 3, 14:25 UTC2h 30m
2026-07-02 DAL2336 ATL → TLH Jul 2, 23:15 UTCJul 3, 00:55 UTC1h 40m
2026-07-02 DAL2226 LGA → ORD Jul 2, 19:10 UTCJul 2, 21:00 UTC1h 50m
2026-07-02 DAL2526 - Jul 2, 15:10 UTCJul 2, 17:35 UTC2h 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 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 2h ago.
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, DAL1399, DAL1570, DAL2606.