Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A12FDA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N176DZ · BOEING 767-300 · operated by DELTA AIR LINES INC

Hex
A12FDA
Octal
50227732
Decimal
10,563,546
Country
US
Tail
N176DZ
Type
B763
Transponder active on ground
Flights observed
325
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:05 UTC

Last known position

Most recent position reported by Mode-S A12FDA.

Country allocation

The ICAO 24-bit address A12FDA 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
DAL245 - 25 2026-07-19
DAL233 - 23 2026-07-18
DAL232 - 20 2026-07-17
DAL244 - 18 2026-07-19
DAL219 - 11 2026-06-24
DAL218 - 9 2026-06-23
DAL180 Delta Air Lines 9 2026-05-09
DAL670 Delta Air Lines 8 2026-04-15
DAL181 Delta Air Lines 8 2026-05-09
DAL480 Delta Air Lines 7 2026-05-10
DAL208 Delta Air Lines 7 2026-06-30
DAL1882 Delta Air Lines 7 2026-04-29
DAL767 Delta Air Lines 6 2026-07-24
DAL425 Delta Air Lines 6 2026-06-04
DAL316 Delta Air Lines 6 2026-05-09
DAL286 - 6 2026-07-14
DAL676 Delta Air Lines 5 2026-06-05
DAL427 Delta Air Lines 5 2026-05-09
DAL35 - 5 2026-07-03
DAL216 - 5 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL633 ATL → UIO Jul 26, 19:15 UTCJul 26, 22:05 UTC2h 50m
2026-07-25 DAL395 LAX → ATL Jul 25, 21:50 UTCJul 26, 01:45 UTC3h 55m
2026-07-25 DAL773 DTW → PHX Jul 25, 15:00 UTCJul 25, 20:10 UTC5h 10m
2026-07-24 DAL938 LAX → JFK Jul 24, 22:20 UTCJul 25, 03:05 UTC4h 45m
2026-07-24 DAL767 LAX → AUS Jul 24, 15:15 UTCJul 24, 20:40 UTC5h 25m
2026-07-24 DAL915 BOS → MCO Jul 24, 07:35 UTCJul 24, 12:20 UTC4h 45m
2026-07-23 DAL707 JFK → PHX Jul 23, 23:45 UTCJul 24, 05:15 UTC5h 30m
2026-07-23 DAL209 EDI → JFK Jul 23, 13:05 UTCJul 23, 20:00 UTC6h 55m
2026-07-23 DAL34 ATL → EDI Jul 23, 03:45 UTCJul 23, 10:50 UTC7h 5m
2026-07-22 DAL395 LAX → ATL Jul 22, 21:35 UTCJul 23, 01:30 UTC3h 55m
2026-07-22 DAL713 BOS → LAX Jul 22, 14:03 UTCJul 22, 19:02 UTC4h 59m
2026-07-22 DAL713 BOS → LAX Jul 22, 14:05 UTCJul 22, 19:15 UTC5h 10m
2026-07-22 DAL938 LAX → JFK Jul 22, 00:45 UTCJul 22, 05:25 UTC4h 40m
2026-07-21 DAL713 BOS → LAX Jul 21, 12:35 UTCJul 21, 17:55 UTC5h 20m
2026-07-21 DAL960 SLC → CVG Jul 21, 04:10 UTCJul 21, 09:10 UTC5h 0m
2026-07-20 DAL738 - Jul 20, 19:25 UTCJul 21, 00:25 UTC4h 59m
2026-07-20 DAL738 JFK → LAX Jul 20, 19:23 UTCJul 21, 00:14 UTC4h 51m
2026-07-19 DAL245 - Jul 19, 15:25 UTCJul 20, 01:00 UTC9h 35m
2026-07-19 DAL245 CTA → JFK Jul 19, 15:19 UTCJul 20, 00:52 UTC9h 33m
2026-07-19 DAL244 JFK → CTA Jul 19, 04:18 UTCJul 19, 13:02 UTC8h 44m
2026-07-19 DAL244 - Jul 19, 04:20 UTCJul 19, 12:30 UTC8h 10m
2026-07-18 DAL233 - Jul 18, 11:35 UTCJul 18, 12:30 UTC55m
2026-07-18 DAL233 NAP → JFK Jul 18, 11:30 UTCJul 18, 20:33 UTC9h 3m
2026-07-17 DAL232 - Jul 17, 23:25 UTCJul 18, 07:25 UTC8h 1m
2026-07-17 DAL9917 OLB → JFK Jul 17, 11:50 UTCJul 17, 20:29 UTC8h 40m
2026-07-15 DAL216 JFK → OLB Jul 15, 23:26 UTCJul 16, 07:07 UTC7h 41m
2026-07-15 DAL216 - Jul 15, 23:30 UTCJul 16, 06:55 UTC7h 25m
2026-07-15 DAL287 MXP → JFK Jul 15, 07:25 UTCJul 15, 15:45 UTC8h 20m
2026-07-14 DAL286 - Jul 14, 20:50 UTCJul 15, 04:30 UTC7h 39m
2026-07-14 DAL286 JFK → MXP Jul 14, 20:50 UTCJul 15, 04:34 UTC7h 44m
2026-07-14 DAL245 - Jul 14, 08:25 UTCJul 14, 10:30 UTC2h 5m
2026-07-14 DAL245 CTA → JFK Jul 14, 08:19 UTCJul 14, 17:46 UTC9h 27m
2026-07-14 DAL245 CTA → JFK Jul 14, 08:19 UTCJul 14, 17:42 UTC9h 23m
2026-07-13 DAL244 JFK → CTA Jul 13, 21:17 UTCJul 14, 05:41 UTC8h 24m
2026-07-13 DAL244 - Jul 13, 21:20 UTCJul 13, 23:05 UTC1h 45m
2026-07-13 DAL233 - Jul 13, 08:40 UTCJul 13, 16:30 UTC7h 50m
2026-07-13 DAL233 NAP → JFK Jul 13, 08:36 UTCJul 13, 17:59 UTC9h 23m
2026-07-12 DAL232 JFK → NAP Jul 12, 21:52 UTCJul 13, 06:07 UTC8h 15m
2026-07-12 DAL232 - Jul 12, 21:55 UTCJul 12, 23:30 UTC1h 35m
2026-07-12 DAL205 ARN → JFK Jul 12, 09:40 UTCJul 12, 17:45 UTC8h 5m
2026-07-12 DAL204 JFK → ARN Jul 12, 00:35 UTCJul 12, 07:25 UTC6h 50m
2026-07-11 DAL209 EDI → JFK Jul 11, 14:00 UTCJul 11, 21:00 UTC7h 0m
2026-07-11 DAL34 - Jul 11, 06:05 UTCJul 11, 11:05 UTC5h 0m
2026-07-11 DAL34 - Jul 11, 03:25 UTCJul 11, 06:01 UTC2h 35m
2026-07-10 DAL141 BRU → ATL Jul 10, 08:05 UTCJul 10, 17:15 UTC9h 10m
2026-07-10 DAL141 BRU → ATL Jul 10, 08:03 UTCJul 10, 17:10 UTC9h 7m
2026-07-09 DAL140 ATL → BRU Jul 9, 21:45 UTCJul 10, 05:45 UTC8h 0m
2026-07-09 DAL980 BOG → ATL Jul 9, 14:20 UTCJul 9, 18:35 UTC4h 15m
2026-07-08 DAL981 ATL → BOG Jul 8, 20:00 UTCJul 9, 00:15 UTC4h 15m
2026-07-08 DAL416 - Jul 8, 04:30 UTCJul 8, 11:00 UTC6h 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 N176DZ page for operator, model, and routing details .

Mode-S A12FDA frequently asked

What is Mode-S code A12FDA?
A12FDA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N176DZ.
Where is Mode-S A12FDA registered?
Mode-S code A12FDA 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 A12FDA broadcasting right now?
Mode-S A12FDA 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 A12FDA, octal 50227732, decimal 10,563,546.
What flights does A12FDA operate?
Mode-S A12FDA has broadcast 20 distinct callsigns, including DAL245, DAL233, DAL232, DAL244, DAL219.