sensors Mode-S transponder

A08A6B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N134DU · AIRBUS A220-100 · operated by DELTA AIR LINES INC

Hex
A08A6B
Octal
50105153
Decimal
10,521,195
Country
US
Tail
N134DU
Type
BCS1
No current signal · last broadcast 19h ago
Flights observed
12
Distinct callsigns
7
Country
US
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S A08A6B.

Country allocation

The ICAO 24-bit address A08A6B 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 7 distinct

Callsign Airline Flights Last seen
DAL735 - 3 2026-04-13
DAL2667 - 3 2026-04-13
DAL930 - 2 2026-04-13
DAL814 Delta Air Lines 1 2026-04-13
DAL2982 Delta Air Lines 1 2026-04-12
DAL1723 - 1 2026-04-14
DAL1342 - 1 2026-04-13

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 DAL1723 - Apr 14, 05:15 UTCApr 14, 05:35 UTC20m
2026-04-13 DAL1342 SLC → SMF Apr 13, 21:50 UTCApr 13, 23:10 UTC1h 20m
2026-04-13 DAL930 - Apr 13, 19:50 UTCApr 13, 20:15 UTC25m
2026-04-13 DAL930 - Apr 13, 17:50 UTCApr 13, 20:25 UTC2h 35m
2026-04-13 DAL2667 - Apr 13, 16:15 UTCApr 13, 16:25 UTC10m
2026-04-13 DAL2667 - Apr 13, 15:50 UTCApr 13, 16:25 UTC35m
2026-04-13 DAL2667 - Apr 13, 13:55 UTCApr 13, 16:15 UTC2h 20m
2026-04-13 DAL735 - Apr 13, 12:20 UTCApr 13, 12:35 UTC15m
2026-04-13 DAL735 - Apr 13, 11:55 UTCApr 13, 12:35 UTC40m
2026-04-13 DAL735 - Apr 13, 10:40 UTCApr 13, 12:15 UTC1h 35m
2026-04-13 DAL814 DTW → BDL Apr 13, 02:24 UTCApr 13, 03:57 UTC1h 33m
2026-04-12 DAL2982 ORD → BOS Apr 12, 17:15 UTCApr 12, 19:45 UTC2h 30m

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 N134DU page for operator, model, and routing details .

Mode-S A08A6B frequently asked

What is Mode-S code A08A6B?
A08A6B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N134DU.
Where is Mode-S A08A6B registered?
Mode-S code A08A6B 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 A08A6B broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A08A6B, octal 50105153, decimal 10,521,195.
What flights does A08A6B operate?
Mode-S A08A6B has broadcast 7 distinct callsigns, including DAL735, DAL2667, DAL930, DAL814, DAL2982.