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
No current signal · last broadcast 50m ago
Flights observed
292
Distinct callsigns
20
Country
US
Last broadcast
50m ago

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
DAL233 - 21 2026-07-13
DAL245 - 20 2026-06-27
DAL232 - 19 2026-07-12
DAL244 - 16 2026-07-13
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
DAL425 Delta Air Lines 6 2026-06-04
DAL316 Delta Air Lines 6 2026-05-09
DAL767 Delta Air Lines 5 2026-06-05
DAL676 Delta Air Lines 5 2026-06-05
DAL427 Delta Air Lines 5 2026-05-09
DAL35 - 5 2026-07-03
DAL205 - 5 2026-07-12
DAL154 - 5 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL244 JFK → CTA Jul 13, 21:17 UTCJul 14, 05:52 UTC8h 35m
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
2026-07-07 DAL416 ATL → ANC Jul 7, 19:40 UTCJul 8, 02:40 UTC7h 0m
2026-07-07 DAL416 ANC → ATL Jul 7, 05:00 UTCJul 7, 11:40 UTC6h 40m
2026-07-06 DAL416 ATL → ANC Jul 6, 20:10 UTCJul 7, 03:15 UTC7h 5m
2026-07-06 DAL141 - Jul 6, 07:50 UTCJul 6, 16:40 UTC8h 50m
2026-07-06 DAL141 BRU → ATL Jul 6, 07:47 UTCJul 6, 16:36 UTC8h 49m
2026-07-05 DAL140 ATL → BRU Jul 5, 21:25 UTCJul 6, 05:15 UTC7h 50m
2026-07-05 DAL141 BRU → ATL Jul 5, 09:10 UTCJul 5, 18:30 UTC9h 20m
2026-07-04 DAL140 ATL → BRU Jul 4, 23:16 UTCJul 5, 07:16 UTC8h 0m
2026-07-04 DAL140 - Jul 4, 23:20 UTCJul 5, 02:05 UTC2h 45m
2026-07-04 DAL980 - Jul 4, 18:00 UTCJul 4, 19:35 UTC1h 35m
2026-07-03 DAL981 ATL → BOG Jul 3, 22:35 UTCJul 4, 00:10 UTC1h 35m
2026-07-03 DAL35 EDI → ATL Jul 3, 11:15 UTCJul 3, 19:35 UTC8h 20m
2026-07-03 DAL35 EDI → ATL Jul 3, 11:14 UTCJul 3, 19:33 UTC8h 19m
2026-07-03 DAL122 BOS → EDI Jul 3, 03:15 UTCJul 3, 08:45 UTC5h 30m
2026-07-03 DAL122 BOS → EDI Jul 3, 03:15 UTCJul 3, 04:25 UTC1h 10m
2026-07-02 DAL155 DUB → BOS Jul 2, 14:12 UTCJul 2, 20:50 UTC6h 38m
2026-07-02 DAL155 DUB → BOS Jul 2, 14:15 UTCJul 2, 20:50 UTC6h 35m
2026-07-02 DAL154 BOS → DUB Jul 2, 04:09 UTCJul 2, 09:57 UTC5h 48m
2026-07-02 DAL154 BOS → DUB Jul 2, 04:10 UTCJul 2, 09:50 UTC5h 40m
2026-07-01 DAL155 DUB → BOS Jul 1, 14:20 UTCJul 1, 20:45 UTC6h 25m
2026-07-01 DAL155 DUB → BOS Jul 1, 14:18 UTCJul 1, 20:42 UTC6h 24m
2026-07-01 DAL154 BOS → DUB Jul 1, 04:25 UTCJul 1, 09:50 UTC5h 25m
2026-06-30 DAL123 EDI → BOS Jun 30, 10:25 UTCJun 30, 10:55 UTC30m
2026-06-30 DAL123 EDI → BOS Jun 30, 10:24 UTCJun 30, 16:44 UTC6h 20m
2026-06-30 DAL123 EDI → BOS Jun 30, 10:24 UTCJun 30, 16:43 UTC6h 19m
2026-06-30 DAL208 JFK → EDI Jun 30, 02:19 UTCJun 30, 08:34 UTC6h 15m
2026-06-30 DAL208 JFK → EDI Jun 30, 02:20 UTCJun 30, 04:00 UTC1h 40m
2026-06-29 DAL217 OLB → JFK Jun 29, 09:40 UTCJun 29, 18:19 UTC8h 40m
2026-06-28 DAL216 JFK → DSS Jun 28, 23:04 UTCJun 29, 06:34 UTC7h 30m
2026-06-28 DAL287 MXP → JFK Jun 28, 07:23 UTCJun 28, 15:41 UTC8h 18m
2026-06-28 DAL287 MXP → JFK Jun 28, 07:25 UTCJun 28, 15:34 UTC8h 10m
2026-06-27 DAL286 JFK → MXP Jun 27, 21:23 UTCJun 28, 04:38 UTC7h 15m
2026-06-27 DAL286 JFK → MXP Jun 27, 21:25 UTCJun 28, 04:40 UTC7h 15m

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?
No active broadcast right now. Last signal was 50m ago.
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 DAL233, DAL245, DAL232, DAL244, DAL219.