Apparatus

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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
Transponder active on ground
Flights observed
419
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

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 20 distinct

Callsign Airline Flights Last seen
DAL1254 Delta Air Lines 13 2026-07-23
DAL1623 - 12 2026-06-22
DAL2846 - 11 2026-06-15
DAL2673 Delta Air Lines 10 2026-05-08
DAL561 Delta Air Lines 9 2026-06-14
DAL2565 Delta Air Lines 8 2026-07-26
DAL2285 Delta Air Lines 8 2026-05-11
DAL1367 - 8 2026-06-23
DAL362 - 7 2026-07-04
DAL2550 Delta Air Lines 7 2026-06-01
DAL1723 Delta Air Lines 7 2026-07-19
DAL1342 - 7 2026-07-19
DAL3185 - 6 2026-07-12
DAL2795 Delta Air Lines 6 2026-07-19
DAL2156 Delta Air Lines 6 2026-07-20
DAL2057 - 6 2026-07-17
DAL1641 - 6 2026-06-15
DAL1198 - 6 2026-07-19
DAL475 - 5 2026-07-12
DAL3188 - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2565 LGA → ORD Jul 26, 20:50 UTCJul 26, 22:45 UTC1h 55m
2026-07-26 DAL2972 PVD → ATL Jul 26, 16:30 UTCJul 26, 18:30 UTC2h 0m
2026-07-26 DAL2972 PVD → ATL Jul 26, 13:05 UTCJul 26, 14:55 UTC1h 50m
2026-07-25 DAL2528 MSY → ATL Jul 25, 19:50 UTCJul 25, 22:15 UTC2h 25m
2026-07-25 DAL3123 DTW → MEM Jul 25, 16:15 UTCJul 25, 18:35 UTC2h 20m
2026-07-25 DAL2708 - Jul 25, 13:10 UTCJul 25, 14:30 UTC1h 20m
2026-07-25 DAL1614 LGA → MIA Jul 25, 05:15 UTCJul 25, 06:35 UTC1h 20m
2026-07-25 DAL1614 LGA → MIA Jul 25, 05:10 UTCJul 25, 06:32 UTC1h 22m
2026-07-25 DAL1492 JFK → DEN Jul 25, 01:10 UTCJul 25, 03:55 UTC2h 45m
2026-07-24 DAL1492 JFK → DEN Jul 24, 21:50 UTCJul 25, 00:15 UTC2h 25m
2026-07-24 DAL1553 JFK → TPA Jul 24, 19:30 UTCJul 24, 20:35 UTC1h 5m
2026-07-24 DAL1553 JFK → TPA Jul 24, 19:29 UTCJul 24, 20:30 UTC1h 1m
2026-07-24 DAL1553 JFK → TPA Jul 24, 16:25 UTCJul 24, 17:25 UTC1h 0m
2026-07-24 DAL2716 PVD → ATL Jul 24, 12:10 UTCJul 24, 15:00 UTC2h 50m
2026-07-23 DAL2619 ATL → LGA Jul 23, 23:55 UTCJul 24, 02:25 UTC2h 30m
2026-07-23 DAL1254 ATL → PVD Jul 23, 20:45 UTCJul 23, 22:15 UTC1h 30m
2026-07-23 DAL1254 ATL → PVD Jul 23, 20:43 UTCJul 23, 22:10 UTC1h 27m
2026-07-23 DAL1254 ATL → PVD Jul 23, 17:55 UTCJul 23, 19:40 UTC1h 45m
2026-07-23 DAL2363 STL → SLC Jul 23, 13:20 UTCJul 23, 16:10 UTC2h 50m
2026-07-23 DAL1609 TUS → ATL Jul 23, 03:00 UTCJul 23, 04:00 UTC1h 0m
2026-07-22 DAL2574 BOS → SEA Jul 22, 22:40 UTCJul 23, 01:25 UTC2h 45m
2026-07-22 DAL2574 BOS → SEA Jul 22, 22:38 UTCJul 23, 01:19 UTC2h 41m
2026-07-22 DAL2574 BOS → SEA Jul 22, 19:25 UTCJul 22, 21:35 UTC2h 10m
2026-07-22 DAL2594 SFO → MSP Jul 22, 15:45 UTCJul 22, 18:15 UTC2h 30m
2026-07-21 DAL2594 SFO → MSP Jul 21, 23:50 UTCJul 22, 01:50 UTC2h 0m
2026-07-20 DAL2574 BOS → SEA Jul 20, 21:50 UTCJul 21, 00:40 UTC2h 49m
2026-07-20 DAL2574 BOS → SEA Jul 20, 18:20 UTCJul 20, 20:40 UTC2h 20m
2026-07-20 DAL2156 BOS → MSP Jul 20, 13:25 UTCJul 20, 16:40 UTC3h 15m
2026-07-20 DAL1272 SLC → SJC Jul 20, 05:00 UTCJul 20, 06:25 UTC1h 25m
2026-07-20 DAL1299 - Jul 20, 00:20 UTCJul 20, 02:50 UTC2h 30m
2026-07-19 DAL1299 - Jul 19, 19:55 UTCJul 19, 22:45 UTC2h 50m
2026-07-19 DAL1198 - Jul 19, 17:15 UTCJul 19, 18:40 UTC1h 25m
2026-07-19 DAL1198 - Jul 19, 14:20 UTCJul 19, 15:40 UTC1h 20m
2026-07-19 DAL2795 ATL → MCI Jul 19, 12:00 UTCJul 19, 13:00 UTC1h 0m
2026-07-19 DAL2795 ATL → MCI Jul 19, 11:48 UTCJul 19, 12:52 UTC1h 4m
2026-07-19 DAL1723 LAX → PDX Jul 19, 03:45 UTCJul 19, 04:20 UTC35m
2026-07-19 DAL1723 LAX → PDX Jul 19, 03:43 UTCJul 19, 04:46 UTC1h 3m
2026-07-19 DAL1342 - Jul 19, 00:05 UTCJul 19, 01:20 UTC1h 15m
2026-07-18 DAL1342 SLC → SMF Jul 18, 21:40 UTCJul 18, 23:00 UTC1h 20m
2026-07-18 DAL2680 - Jul 18, 18:05 UTCJul 18, 20:25 UTC2h 20m
2026-07-18 DAL2667 MSP → SAT Jul 18, 14:25 UTCJul 18, 16:40 UTC2h 15m
2026-07-18 DAL2667 MSP → SAT Jul 18, 14:24 UTCJul 18, 16:40 UTC2h 16m
2026-07-18 DAL1635 - Jul 18, 11:35 UTCJul 18, 12:35 UTC1h 0m
2026-07-18 DAL1657 - Jul 18, 02:35 UTCJul 18, 03:35 UTC1h 1m
2026-07-17 DAL2113 - Jul 17, 23:30 UTCJul 18, 00:55 UTC1h 25m
2026-07-17 DAL2113 CMH → MSP Jul 17, 23:25 UTCJul 18, 00:51 UTC1h 26m
2026-07-17 DAL2113 MSP → CMH Jul 17, 20:50 UTCJul 17, 22:20 UTC1h 30m
2026-07-17 DAL2057 - Jul 17, 17:55 UTCJul 17, 19:25 UTC1h 30m
2026-07-17 DAL2057 CLE → MSP Jul 17, 17:53 UTCJul 17, 19:26 UTC1h 33m
2026-07-17 DAL2057 MSP → CLE Jul 17, 15:20 UTCJul 17, 16:40 UTC1h 20m

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?
Mode-S A08A6B is currently broadcasting from the ground.
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 20 distinct callsigns, including DAL1254, DAL1623, DAL2846, DAL2673, DAL561.