Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A11D47

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N171DZ · BOEING 767-300 · operated by DELTA AIR LINES INC

Hex
A11D47
Octal
50216507
Decimal
10,558,791
Country
US
Tail
N171DZ
Type
B763
No current signal · last broadcast 1d ago
Flights observed
174
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A11D47.

Country allocation

The ICAO 24-bit address A11D47 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
DAL668 Delta Air Lines 19 2026-05-08
DAL1882 Delta Air Lines 11 2026-04-19
DAL307 Delta Air Lines 8 2026-05-25
DAL480 Delta Air Lines 7 2026-05-24
DAL310 Delta Air Lines 7 2026-05-25
DAL246 Delta Air Lines 6 2026-05-06
DAL939 Delta Air Lines 5 2026-05-05
DAL938 Delta Air Lines 5 2026-05-26
DAL895 Delta Air Lines 5 2026-04-22
DAL650 Delta Air Lines 5 2026-05-26
DAL771 Delta Air Lines 4 2026-04-18
DAL713 Delta Air Lines 4 2026-05-16
DAL636 Delta Air Lines 4 2026-05-19
DAL247 Delta Air Lines 4 2026-05-06
DAL205 Delta Air Lines 4 2026-04-26
DAL204 Delta Air Lines 4 2026-04-25
DAL180 Delta Air Lines 4 2026-05-19
DAL1510 Delta Air Lines 4 2026-04-28
DAL857 Delta Air Lines 3 2026-04-13
DAL783 Delta Air Lines 3 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 DAL115 BCN → ATL May 28, 12:30 UTCMay 28, 19:25 UTC6h 55m
2026-05-28 DAL115 BCN → ATL May 28, 12:27 UTCMay 28, 19:25 UTC6h 58m
2026-05-28 DAL114 SEA → CDG May 28, 02:55 UTCMay 28, 03:40 UTC45m
2026-05-28 DAL114 SEA → CDG May 28, 02:51 UTCMay 28, 09:01 UTC6h 10m
2026-05-27 DAL951 JFK → SFO May 27, 18:40 UTCMay 27, 23:30 UTC4h 50m
2026-05-27 DAL742 LGA → MSP May 27, 11:20 UTCMay 27, 16:45 UTC5h 25m
2026-05-26 DAL938 LAX → JFK May 26, 22:35 UTCMay 27, 03:20 UTC4h 45m
2026-05-26 DAL767 LAX → AUS May 26, 15:20 UTCMay 26, 20:34 UTC5h 15m
2026-05-26 DAL650 JFK → ATL May 26, 01:49 UTCMay 26, 11:20 UTC9h 30m
2026-05-25 DAL307 HNL → MSP May 25, 14:45 UTCMay 25, 19:30 UTC4h 45m
2026-05-25 DAL307 HNL → MSP May 25, 14:43 UTCMay 25, 23:32 UTC8h 49m
2026-05-25 DAL310 LGA → ATL May 25, 05:25 UTCMay 25, 09:30 UTC4h 5m
2026-05-25 DAL310 LGA → ATL May 25, 00:57 UTCMay 25, 09:29 UTC8h 32m
2026-05-24 DAL480 LAX → HNL May 24, 20:40 UTCMay 24, 21:05 UTC25m
2026-05-24 DAL480 LAX → HNL May 24, 16:15 UTCMay 24, 17:05 UTC50m
2026-05-24 DAL480 LAX → HNL May 24, 16:12 UTCMay 24, 20:59 UTC4h 47m
2026-05-23 DAL767 LAX → AUS May 23, 15:48 UTCMay 23, 21:12 UTC5h 24m
2026-05-23 DAL767 LAX → AUS May 23, 15:50 UTCMay 23, 21:05 UTC5h 16m
2026-05-23 DAL650 JFK → ATL May 23, 02:05 UTCMay 23, 11:30 UTC9h 24m
2026-05-23 DAL650 JFK → ATL May 23, 02:06 UTCMay 23, 11:30 UTC9h 24m
2026-05-22 DAL307 HNL → MSP May 22, 15:00 UTCMay 23, 00:05 UTC9h 5m
2026-05-22 DAL307 HNL → MSP May 22, 14:56 UTCMay 23, 00:03 UTC9h 7m
2026-05-22 DAL310 LGA → ATL May 22, 02:10 UTCMay 22, 02:30 UTC20m
2026-05-22 DAL310 LGA → ATL May 22, 02:10 UTCMay 22, 10:32 UTC8h 22m
2026-05-22 DAL307 HNL → MSP May 22, 00:10 UTCMay 22, 00:30 UTC20m
2026-05-21 DAL307 HNL → MSP May 21, 15:20 UTCMay 21, 20:05 UTC4h 45m
2026-05-21 DAL310 LGA → ATL May 21, 01:10 UTCMay 21, 09:20 UTC8h 10m
2026-05-20 DAL480 LAX → HNL May 20, 22:05 UTCMay 20, 22:40 UTC35m
2026-05-20 DAL480 LAX → HNL May 20, 17:25 UTCMay 20, 17:50 UTC25m
2026-05-19 DAL427 JFK → SEA May 19, 23:05 UTCMay 20, 04:05 UTC5h 0m
2026-05-19 DAL427 JFK → SEA May 19, 23:01 UTCMay 20, 03:59 UTC4h 58m
2026-05-19 DAL180 HND → HNL May 19, 13:50 UTCMay 19, 21:00 UTC7h 10m
2026-05-19 DAL180 HND → HNL May 19, 13:46 UTCMay 19, 20:51 UTC7h 5m
2026-05-19 DAL181 HNL → HND May 19, 03:55 UTCMay 19, 11:45 UTC7h 50m
2026-05-19 DAL181 HNL → HND May 19, 03:51 UTCMay 19, 11:48 UTC7h 57m
2026-05-19 DAL636 SEA → ANC May 19, 01:15 UTCMay 19, 01:30 UTC15m
2026-05-18 DAL636 SEA → ANC May 18, 15:20 UTCMay 18, 21:00 UTC5h 39m
2026-05-18 DAL915 BOS → MCO May 18, 08:10 UTCMay 18, 13:05 UTC4h 55m
2026-05-17 DAL707 JFK → PHX May 17, 23:55 UTCMay 18, 05:50 UTC5h 55m
2026-05-17 DAL209 EDI → JFK May 17, 13:31 UTCMay 17, 20:20 UTC6h 50m
2026-05-17 DAL34 ATL → EDI May 17, 03:05 UTCMay 17, 10:30 UTC7h 25m
2026-05-16 DAL395 LAX → ATL May 16, 21:05 UTCMay 17, 00:45 UTC3h 40m
2026-05-16 DAL713 BOS → LAX May 16, 12:35 UTCMay 16, 18:10 UTC5h 35m
2026-05-16 DAL960 SLC → CVG May 16, 05:00 UTCMay 16, 09:56 UTC4h 56m
2026-05-15 DAL747 SEA → JFK May 15, 18:00 UTCMay 15, 23:15 UTC5h 15m
2026-05-15 DAL650 JFK → ATL May 15, 05:50 UTCMay 15, 10:40 UTC4h 50m
2026-05-15 DAL650 JFK → ATL May 15, 01:50 UTCMay 15, 02:00 UTC10m
2026-05-14 DAL307 HNL → MSP May 14, 23:45 UTCMay 15, 00:05 UTC20m
2026-05-14 DAL307 HNL → MSP May 14, 14:50 UTCMay 14, 19:30 UTC4h 40m
2026-05-14 DAL310 LGA → ATL May 14, 05:00 UTCMay 14, 09:10 UTC4h 10m

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 N171DZ page for operator, model, and routing details .

Mode-S A11D47 frequently asked

What is Mode-S code A11D47?
A11D47 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N171DZ.
Where is Mode-S A11D47 registered?
Mode-S code A11D47 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 A11D47 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A11D47, octal 50216507, decimal 10,558,791.
What flights does A11D47 operate?
Mode-S A11D47 has broadcast 20 distinct callsigns, including DAL668, DAL1882, DAL307, DAL480, DAL310.