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 Jul 25, 20:10 UTC
Flights observed
352
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 20:10 UTC

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 - 21 2026-07-14
DAL217 Delta Air Lines 14 2026-07-25
DAL1882 Delta Air Lines 11 2026-04-19
DAL155 - 9 2026-07-12
DAL307 Delta Air Lines 8 2026-05-25
DAL216 Delta Air Lines 8 2026-07-24
DAL939 - 7 2026-07-04
DAL938 Delta Air Lines 7 2026-06-11
DAL480 Delta Air Lines 7 2026-05-24
DAL44 Delta Air Lines 7 2026-07-24
DAL310 Delta Air Lines 7 2026-05-25
DAL284 - 7 2026-07-10
DAL246 - 7 2026-07-05
DAL209 - 7 2026-07-18
DAL713 - 6 2026-07-16
DAL416 - 6 2026-07-02
DAL34 - 6 2026-07-18
DAL285 - 6 2026-07-10
DAL247 Delta Air Lines 6 2026-07-05
DAL244 - 6 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 DAL217 DSS → JFK Jul 25, 11:35 UTCJul 25, 11:45 UTC10m
2026-07-25 DAL217 DSS → JFK Jul 25, 11:26 UTCJul 25, 19:57 UTC8h 31m
2026-07-25 DAL217 DSS → JFK Jul 25, 11:26 UTCJul 25, 20:11 UTC8h 45m
2026-07-24 DAL216 JFK → DSS Jul 24, 23:10 UTCJul 25, 06:45 UTC7h 35m
2026-07-24 DAL45 DUB → JFK Jul 24, 12:30 UTCJul 24, 19:05 UTC6h 35m
2026-07-24 DAL44 JFK → DUB Jul 24, 02:30 UTCJul 24, 08:05 UTC5h 35m
2026-07-23 DAL149 MLA → JFK Jul 23, 08:35 UTCJul 23, 17:45 UTC9h 10m
2026-07-22 DAL148 JFK → FCO Jul 22, 21:30 UTCJul 23, 06:00 UTC8h 30m
2026-07-22 DAL148 JFK → FCO Jul 22, 21:28 UTCJul 23, 05:57 UTC8h 29m
2026-07-22 DAL233 CDG → MSP Jul 22, 10:20 UTCJul 22, 17:30 UTC7h 10m
2026-07-21 DAL232 MSP → CDG Jul 21, 21:30 UTCJul 22, 05:25 UTC7h 55m
2026-07-21 DAL115 BCN → ATL Jul 21, 12:05 UTCJul 21, 12:45 UTC40m
2026-07-21 DAL115 BCN → ATL Jul 21, 12:04 UTCJul 21, 18:51 UTC6h 47m
2026-07-21 DAL114 SEA → CDG Jul 21, 03:24 UTCJul 21, 09:52 UTC6h 28m
2026-07-21 DAL114 SEA → CDG Jul 21, 03:25 UTCJul 21, 05:05 UTC1h 40m
2026-07-20 DAL9917 DSS → JFK Jul 20, 11:50 UTCJul 20, 19:25 UTC7h 35m
2026-07-19 DAL217 - Jul 19, 12:10 UTCJul 19, 12:40 UTC30m
2026-07-19 DAL217 DSS → DSS Jul 19, 12:08 UTCJul 19, 15:55 UTC3h 47m
2026-07-19 DAL216 JFK → DSS Jul 19, 03:00 UTCJul 19, 10:05 UTC7h 5m
2026-07-18 DAL209 EDI → JFK Jul 18, 13:14 UTCJul 18, 20:23 UTC7h 9m
2026-07-18 DAL209 EDI → JFK Jul 18, 13:15 UTCJul 18, 20:15 UTC7h 0m
2026-07-18 DAL34 ATL → EDI Jul 18, 03:25 UTCJul 18, 11:03 UTC7h 38m
2026-07-18 DAL34 ATL → EDI Jul 18, 03:25 UTCJul 18, 11:05 UTC7h 40m
2026-07-17 DAL395 - Jul 17, 20:29 UTCJul 18, 00:39 UTC4h 10m
2026-07-17 DAL395 LAX → ATL Jul 17, 20:28 UTCJul 18, 00:39 UTC4h 11m
2026-07-17 DAL501 - Jul 17, 14:50 UTCJul 17, 18:34 UTC3h 45m
2026-07-16 DAL395 - Jul 16, 20:29 UTCJul 17, 00:35 UTC4h 5m
2026-07-16 DAL713 - Jul 16, 12:55 UTCJul 16, 17:45 UTC4h 50m
2026-07-16 DAL365 - Jul 16, 05:55 UTCJul 16, 10:50 UTC4h 55m
2026-07-15 DAL365 PCT → SFO Jul 15, 21:25 UTCJul 16, 02:35 UTC5h 10m
2026-07-15 DAL405 - Jul 15, 14:05 UTCJul 15, 19:15 UTC5h 10m
2026-07-15 DAL365 JFK → SFO Jul 15, 05:35 UTCJul 15, 10:40 UTC5h 5m
2026-07-14 DAL668 SFO → JFK Jul 14, 22:20 UTCJul 15, 03:40 UTC5h 19m
2026-07-14 DAL668 JFK → SFO Jul 14, 12:15 UTCJul 14, 17:20 UTC5h 5m
2026-07-13 DAL45 - Jul 13, 13:25 UTCJul 13, 13:45 UTC20m
2026-07-13 DAL45 DUB → JFK Jul 13, 13:26 UTCJul 13, 20:07 UTC6h 41m
2026-07-13 DAL154 BOS → DUB Jul 13, 04:35 UTCJul 13, 10:20 UTC5h 45m
2026-07-12 DAL155 DUB → BOS Jul 12, 14:15 UTCJul 12, 20:55 UTC6h 40m
2026-07-12 DAL44 JFK → DUB Jul 12, 02:40 UTCJul 12, 08:35 UTC5h 55m
2026-07-11 DAL233 - Jul 11, 09:10 UTCJul 11, 18:15 UTC9h 5m
2026-07-10 DAL232 JFK → NAP Jul 10, 22:19 UTCJul 11, 06:40 UTC8h 21m
2026-07-10 DAL232 - Jul 10, 22:20 UTCJul 11, 06:35 UTC8h 15m
2026-07-10 DAL285 - Jul 10, 12:40 UTCJul 10, 19:35 UTC6h 55m
2026-07-10 DAL284 JFK → SNN Jul 10, 05:12 UTCJul 10, 10:45 UTC5h 33m
2026-07-10 DAL284 - Jul 10, 05:15 UTCJul 10, 10:35 UTC5h 20m
2026-07-09 DAL45 DUB → JFK Jul 9, 12:30 UTCJul 9, 19:20 UTC6h 50m
2026-07-09 DAL154 - Jul 9, 04:00 UTCJul 9, 09:45 UTC5h 45m
2026-07-08 DAL123 EDI → BOS Jul 8, 10:20 UTCJul 8, 16:45 UTC6h 25m
2026-07-08 DAL208 JFK → EDI Jul 8, 01:30 UTCJul 8, 07:45 UTC6h 15m
2026-07-08 DAL208 JFK → EDI Jul 8, 01:31 UTCJul 8, 07:48 UTC6h 17m

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 Jul 25, 20:10 UTC.
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, DAL217, DAL1882, DAL155, DAL307.