Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A120FE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N172DZ · BOEING 767-300 · operated by DELTA AIR LINES INC

Hex
A120FE
Octal
50220376
Decimal
10,559,742
Country
US
Tail
N172DZ
Type
B763
No current signal · last broadcast 1d ago
Flights observed
279
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A120FE.

Country allocation

The ICAO 24-bit address A120FE 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
DAL676 - 12 2026-06-23
DAL141 - 12 2026-07-12
DAL140 - 11 2026-07-11
DAL155 - 10 2026-07-07
DAL767 - 9 2026-07-02
DAL425 - 9 2026-07-01
DAL981 - 8 2026-07-11
DAL416 - 8 2026-06-19
DAL980 - 7 2026-07-11
DAL181 Delta Air Lines 7 2026-04-27
DAL92 Delta Air Lines 6 2026-06-03
DAL463 - 6 2026-07-02
DAL427 - 6 2026-06-22
DAL233 Delta Air Lines 6 2026-06-07
DAL232 Delta Air Lines 6 2026-06-07
DAL180 Delta Air Lines 6 2026-04-27
DAL93 Delta Air Lines 5 2026-06-04
DAL783 Delta Air Lines 5 2026-05-04
DAL773 - 5 2026-07-05
DAL650 Delta Air Lines 5 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 DAL141 BRU → ATL Jul 12, 08:05 UTCJul 12, 16:55 UTC8h 50m
2026-07-12 DAL141 BRU → ATL Jul 12, 08:04 UTCJul 12, 16:53 UTC8h 49m
2026-07-11 DAL140 - Jul 11, 21:45 UTCJul 12, 05:45 UTC8h 0m
2026-07-11 DAL980 BOG → ATL Jul 11, 14:30 UTCJul 11, 19:05 UTC4h 35m
2026-07-11 DAL981 - Jul 11, 00:00 UTCJul 11, 00:15 UTC15m
2026-07-10 DAL981 ATL → BOG Jul 10, 20:04 UTCJul 11, 00:19 UTC4h 15m
2026-07-10 DAL981 - Jul 10, 20:05 UTCJul 10, 21:40 UTC1h 35m
2026-07-08 DAL35 EDI → ATL Jul 8, 09:15 UTCJul 8, 17:20 UTC8h 5m
2026-07-08 DAL122 - Jul 8, 01:05 UTCJul 8, 01:30 UTC25m
2026-07-08 DAL122 BOS → EDI Jul 8, 01:05 UTCJul 8, 06:56 UTC5h 51m
2026-07-07 DAL155 - Jul 7, 22:00 UTCJul 7, 22:10 UTC10m
2026-07-07 DAL155 - Jul 7, 15:25 UTCJul 7, 16:15 UTC50m
2026-07-07 DAL155 DUB → BOS Jul 7, 15:23 UTCJul 7, 21:42 UTC6h 19m
2026-07-07 DAL155 DUB → BOS Jul 7, 15:23 UTCJul 7, 21:54 UTC6h 31m
2026-07-07 DAL44 JFK → DUB Jul 7, 06:55 UTCJul 7, 12:45 UTC5h 50m
2026-07-06 DAL939 LAX → JFK Jul 6, 23:25 UTCJul 7, 04:15 UTC4h 50m
2026-07-06 DAL713 - Jul 6, 12:35 UTCJul 6, 17:35 UTC5h 0m
2026-07-06 DAL991 - Jul 6, 02:40 UTCJul 6, 02:55 UTC15m
2026-07-05 DAL991 - Jul 5, 21:30 UTCJul 6, 02:55 UTC5h 25m
2026-07-05 DAL991 LAX → JFK Jul 5, 21:28 UTCJul 6, 02:25 UTC4h 57m
2026-07-05 DAL773 - Jul 5, 13:35 UTCJul 5, 18:35 UTC5h 0m
2026-07-04 DAL683 - Jul 4, 23:10 UTCJul 5, 05:45 UTC6h 35m
2026-07-04 DAL683 JFK → SAN Jul 4, 14:10 UTCJul 4, 19:40 UTC5h 30m
2026-07-04 DAL668 JFK → LAS Jul 4, 04:20 UTCJul 4, 05:00 UTC40m
2026-07-03 DAL668 JFK → LAS Jul 3, 18:55 UTCJul 4, 01:20 UTC6h 25m
2026-07-03 DAL668 JFK → LAS Jul 3, 11:15 UTCJul 3, 16:55 UTC5h 40m
2026-07-02 DAL938 - Jul 2, 22:35 UTCJul 3, 03:25 UTC4h 50m
2026-07-02 DAL767 - Jul 2, 15:25 UTCJul 2, 20:35 UTC5h 10m
2026-07-02 DAL767 JFK → LAX Jul 2, 15:21 UTCJul 2, 20:32 UTC5h 11m
2026-07-02 DAL915 - Jul 2, 07:05 UTCJul 2, 11:50 UTC4h 45m
2026-07-02 DAL463 - Jul 2, 03:25 UTCJul 2, 04:20 UTC55m
2026-07-01 DAL463 OGG → LAX Jul 1, 23:18 UTCJul 2, 04:20 UTC5h 2m
2026-07-01 DAL425 - Jul 1, 20:45 UTCJul 1, 21:00 UTC15m
2026-07-01 DAL425 - Jul 1, 15:50 UTCJul 1, 16:15 UTC25m
2026-07-01 DAL425 LAX → OGG Jul 1, 15:48 UTCJul 1, 21:01 UTC5h 13m
2026-07-01 DAL463 - Jul 1, 03:15 UTCJul 1, 04:00 UTC45m
2026-06-30 DAL425 - Jun 30, 15:45 UTCJun 30, 16:10 UTC25m
2026-06-30 DAL425 LAX → OGG Jun 30, 15:42 UTCJun 30, 20:52 UTC5h 10m
2026-06-30 DAL707 JFK → LAX Jun 30, 00:02 UTCJun 30, 05:15 UTC5h 13m
2026-06-30 DAL707 JFK → LAX Jun 30, 00:04 UTCJun 30, 05:20 UTC5h 16m
2026-06-29 DAL209 EDI → JFK Jun 29, 13:44 UTCJun 29, 20:30 UTC6h 45m
2026-06-29 DAL34 ATL → EDI Jun 29, 03:10 UTCJun 29, 10:41 UTC7h 31m
2026-06-29 DAL34 - Jun 29, 03:14 UTCJun 29, 06:19 UTC3h 5m
2026-06-28 DAL141 BOS → ATL Jun 28, 21:56 UTCJun 29, 00:04 UTC2h 8m
2026-06-28 DAL141 BOS → ATL Jun 28, 21:59 UTCJun 29, 00:10 UTC2h 10m
2026-06-28 DAL141 BRU → BOS Jun 28, 12:50 UTCJun 28, 20:04 UTC7h 15m
2026-06-28 DAL140 - Jun 28, 01:34 UTCJun 28, 04:25 UTC2h 50m
2026-06-28 DAL140 ATL → BRU Jun 28, 01:31 UTCJun 28, 09:17 UTC7h 46m
2026-06-27 DAL9893 EDI → ATL Jun 27, 14:35 UTCJun 27, 22:45 UTC8h 10m
2026-06-26 DAL9892 ATL → EDI Jun 26, 07:45 UTCJun 26, 15:15 UTC7h 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 N172DZ page for operator, model, and routing details .

Mode-S A120FE frequently asked

What is Mode-S code A120FE?
A120FE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N172DZ.
Where is Mode-S A120FE registered?
Mode-S code A120FE 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 A120FE 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 A120FE, octal 50220376, decimal 10,559,742.
What flights does A120FE operate?
Mode-S A120FE has broadcast 20 distinct callsigns, including DAL676, DAL141, DAL140, DAL155, DAL767.