Apparatus

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sensors Mode-S transponder

A64CE6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N505DZ · AIRBUS A-321neo · operated by DELTA AIR LINES INC

Hex
A64CE6
Octal
51446346
Decimal
10,898,662
Country
US
Tail
N505DZ
Type
A21N
No current signal · last broadcast Jul 25, 13:10 UTC
Flights observed
409
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 13:10 UTC

Last known position

Most recent position reported by Mode-S A64CE6.

Country allocation

The ICAO 24-bit address A64CE6 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
DAL1961 - 21 2026-07-16
DAL1859 - 14 2026-07-16
DAL1854 - 11 2026-07-14
DAL740 - 9 2026-07-02
DAL1719 - 9 2026-06-16
DAL571 Delta Air Lines 8 2026-07-20
DAL515 Delta Air Lines 8 2026-07-21
DAL340 - 8 2026-07-20
DAL1955 - 8 2026-07-13
DAL440 Delta Air Lines 7 2026-05-31
DAL359 Delta Air Lines 7 2026-06-06
DAL351 Delta Air Lines 7 2026-06-05
DAL1219 Delta Air Lines 7 2026-07-21
DAL418 Delta Air Lines 6 2026-07-25
DAL1209 Delta Air Lines 6 2026-07-22
DAL784 Delta Air Lines 5 2026-04-30
DAL684 Delta Air Lines 5 2026-05-25
DAL546 - 5 2026-07-01
DAL506 Delta Air Lines 5 2026-06-10
DAL476 Delta Air Lines 5 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 DAL476 ATL → SLC Jul 25, 12:00 UTCJul 25, 13:00 UTC1h 0m
2026-07-25 DAL418 JFK → PDX Jul 25, 00:10 UTCJul 25, 00:35 UTC25m
2026-07-25 DAL418 JFK → PDX Jul 25, 00:05 UTCJul 25, 05:21 UTC5h 16m
2026-07-24 DAL422 ATL → BOS Jul 24, 21:20 UTCJul 24, 22:05 UTC45m
2026-07-24 DAL422 ATL → BOS Jul 24, 17:15 UTCJul 24, 17:30 UTC15m
2026-07-24 DAL443 ATL → PHL Jul 24, 07:45 UTCJul 24, 08:10 UTC25m
2026-07-24 DAL443 ATL → PHL Jul 24, 02:50 UTCJul 24, 03:15 UTC25m
2026-07-23 DAL2119 MSY → LGA Jul 23, 21:40 UTCJul 24, 01:10 UTC3h 30m
2026-07-23 DAL1138 BOS → RDU Jul 23, 17:40 UTCJul 23, 20:20 UTC2h 40m
2026-07-22 DAL702 SLC → BOS Jul 22, 23:30 UTCJul 23, 03:25 UTC3h 55m
2026-07-22 DAL1209 IAH → LGA Jul 22, 20:30 UTCJul 22, 22:00 UTC1h 30m
2026-07-22 DAL1209 IAH → LGA Jul 22, 17:35 UTCJul 22, 18:55 UTC1h 20m
2026-07-22 DAL1318 MSP → EWR Jul 22, 14:45 UTCJul 22, 16:10 UTC1h 25m
2026-07-21 DAL1219 RSW → BOS Jul 21, 20:15 UTCJul 22, 00:20 UTC4h 5m
2026-07-21 DAL515 JFK → LAX Jul 21, 14:25 UTCJul 21, 18:25 UTC4h 0m
2026-07-21 DAL486 - Jul 21, 11:15 UTCJul 21, 11:50 UTC35m
2026-07-21 DAL486 - Jul 21, 07:00 UTCJul 21, 07:15 UTC15m
2026-07-20 DAL340 - Jul 20, 22:15 UTCJul 21, 03:50 UTC5h 34m
2026-07-20 DAL648 MSP → CUN Jul 20, 15:45 UTCJul 20, 20:10 UTC4h 25m
2026-07-20 DAL923 ATL → SFO Jul 20, 12:16 UTCJul 20, 14:25 UTC2h 9m
2026-07-20 DAL923 ATL → SFO Jul 20, 12:20 UTCJul 20, 14:25 UTC2h 5m
2026-07-20 DAL571 ATL → LGA Jul 20, 05:10 UTCJul 20, 10:10 UTC5h 0m
2026-07-19 DAL571 ATL → LGA Jul 19, 21:50 UTCJul 20, 03:00 UTC5h 10m
2026-07-19 DAL9965 JFK → BNH Jul 19, 18:20 UTCJul 19, 19:05 UTC45m
2026-07-18 DAL1943 JFK → JFK Jul 18, 01:10 UTCJul 18, 14:15 UTC13h 6m
2026-07-17 DAL620 CUN → JFK Jul 17, 18:05 UTCJul 17, 21:34 UTC3h 30m
2026-07-17 DAL621 JFK → CUN Jul 17, 12:45 UTCJul 17, 16:10 UTC3h 25m
2026-07-17 DAL621 JFK → CUN Jul 17, 12:42 UTCJul 17, 16:05 UTC3h 23m
2026-07-16 DAL1961 - Jul 16, 22:05 UTCJul 17, 01:29 UTC3h 25m
2026-07-16 DAL1961 SJU → JFK Jul 16, 21:57 UTCJul 17, 01:27 UTC3h 30m
2026-07-16 DAL1961 - Jul 16, 17:05 UTCJul 16, 17:45 UTC40m
2026-07-16 DAL1859 JFK → JFK Jul 16, 01:20 UTCJul 16, 04:37 UTC3h 17m
2026-07-16 DAL1859 JFK → JFK Jul 16, 01:20 UTCJul 16, 02:05 UTC45m
2026-07-15 DAL1994 JFK → JFK Jul 15, 12:30 UTCJul 15, 21:35 UTC9h 5m
2026-07-14 DAL1908 JFK → JFK Jul 14, 18:20 UTCJul 15, 03:00 UTC8h 39m
2026-07-14 DAL1854 - Jul 14, 14:20 UTCJul 14, 15:20 UTC1h 0m
2026-07-14 DAL1859 - Jul 14, 03:45 UTCJul 14, 04:05 UTC20m
2026-07-14 DAL1859 JFK → SJU Jul 14, 00:52 UTCJul 14, 04:07 UTC3h 15m
2026-07-14 DAL1859 - Jul 14, 00:55 UTCJul 14, 01:35 UTC40m
2026-07-13 DAL1957 - Jul 13, 19:05 UTCJul 13, 21:15 UTC2h 10m
2026-07-13 DAL1955 - Jul 13, 12:50 UTCJul 13, 15:15 UTC2h 25m
2026-07-13 DAL1955 JFK → MBJ Jul 13, 12:47 UTCJul 13, 16:05 UTC3h 18m
2026-07-13 DAL1863 SDQ → JFK Jul 13, 00:37 UTCJul 13, 03:49 UTC3h 12m
2026-07-12 DAL1863 - Jul 12, 18:20 UTCJul 13, 03:55 UTC9h 35m
2026-07-12 DAL336 DEN → JFK Jul 12, 12:50 UTCJul 12, 16:15 UTC3h 25m
2026-07-12 DAL424 JFK → DEN Jul 12, 02:05 UTCJul 12, 05:30 UTC3h 25m
2026-07-11 DAL1829 SDQ → JFK Jul 11, 19:15 UTCJul 11, 22:33 UTC3h 18m
2026-07-11 DAL1829 JFK → JFK Jul 11, 12:55 UTCJul 11, 22:35 UTC9h 40m
2026-07-11 DAL1961 - Jul 11, 00:45 UTCJul 11, 01:35 UTC50m
2026-07-10 DAL1961 - Jul 10, 22:15 UTCJul 10, 22:25 UTC10m

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 N505DZ page for operator, model, and routing details .

Mode-S A64CE6 frequently asked

What is Mode-S code A64CE6?
A64CE6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N505DZ.
Where is Mode-S A64CE6 registered?
Mode-S code A64CE6 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 A64CE6 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 13:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A64CE6, octal 51446346, decimal 10,898,662.
What flights does A64CE6 operate?
Mode-S A64CE6 has broadcast 20 distinct callsigns, including DAL1961, DAL1859, DAL1854, DAL740, DAL1719.