Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A120A6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N172AL · operated by DATASTACK

Hex
A120A6
Octal
50220246
Decimal
10,559,654
Country
US
Tail
N172AL
Type
C172
No current signal · last broadcast 10h ago
Flights observed
129
Distinct callsigns
1
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S A120A6.

Country allocation

The ICAO 24-bit address A120A6 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 1 distinct

Callsign Airline Flights Last seen
N172AL - 129 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 N172AL PAO → PAO May 29, 21:30 UTCMay 29, 22:25 UTC55m
2026-05-25 N172AL PAO → PAO May 25, 20:24 UTCMay 25, 20:30 UTC5m
2026-05-25 N172AL PAO → PAO May 25, 20:09 UTCMay 25, 20:19 UTC10m
2026-05-25 N172AL PAO → PAO May 25, 19:54 UTCMay 25, 20:04 UTC10m
2026-05-25 N172AL PAO → PAO May 25, 19:44 UTCMay 25, 19:50 UTC5m
2026-05-25 N172AL PAO → PAO May 25, 16:35 UTCMay 25, 16:50 UTC15m
2026-05-25 N172AL PAO → PAO May 25, 16:20 UTCMay 25, 16:30 UTC10m
2026-05-25 N172AL PAO → PAO May 25, 16:05 UTCMay 25, 16:15 UTC10m
2026-05-25 N172AL PAO → PAO May 25, 15:55 UTCMay 25, 16:00 UTC5m
2026-05-24 N172AL PAO → PAO May 24, 23:00 UTCMay 24, 23:15 UTC15m
2026-05-24 N172AL - May 24, 17:20 UTCMay 24, 18:10 UTC50m
2026-05-24 N172AL - May 24, 16:45 UTCMay 24, 17:15 UTC30m
2026-05-23 N172AL PAO → PAO May 23, 20:15 UTCMay 23, 21:10 UTC55m
2026-05-23 N172AL PAO → PAO May 23, 17:45 UTCMay 23, 18:40 UTC56m
2026-05-23 N172AL PAO → PAO May 23, 15:50 UTCMay 23, 15:55 UTC5m
2026-05-23 N172AL PAO → PAO May 23, 14:55 UTCMay 23, 15:45 UTC50m
2026-05-22 N172AL PAO → PAO May 22, 23:05 UTCMay 23, 00:15 UTC1h 10m
2026-05-22 N172AL PAO → PAO May 22, 20:00 UTCMay 22, 20:50 UTC50m
2026-05-19 N172AL PAO → PAO May 19, 21:35 UTCMay 19, 23:50 UTC2h 15m
2026-05-19 N172AL PAO → PAO May 19, 19:55 UTCMay 19, 20:00 UTC5m
2026-05-19 N172AL PAO → PAO May 19, 19:40 UTCMay 19, 19:50 UTC10m
2026-05-19 N172AL PAO → PAO May 19, 18:25 UTCMay 19, 19:35 UTC1h 10m
2026-05-19 N172AL PAO → PAO May 19, 01:55 UTCMay 19, 02:45 UTC50m
2026-05-18 N172AL PAO → PAO May 18, 20:40 UTCMay 18, 21:50 UTC1h 10m
2026-05-17 N172AL - May 17, 17:35 UTCMay 17, 17:45 UTC10m
2026-05-17 N172AL SQL → PAO May 17, 17:15 UTCMay 17, 17:30 UTC15m
2026-05-17 N172AL PAO → SQL May 17, 16:25 UTCMay 17, 17:05 UTC40m
2026-05-16 N172AL PAO → PAO May 16, 20:30 UTCMay 16, 23:35 UTC3h 5m
2026-05-16 N172AL PAO → PAO May 16, 17:05 UTCMay 16, 18:00 UTC55m
2026-05-15 N172AL PAO → PAO May 15, 20:45 UTCMay 15, 22:00 UTC1h 15m
2026-05-15 N172AL PAO → PAO May 15, 17:25 UTCMay 15, 17:35 UTC10m
2026-05-15 N172AL PAO → PAO May 15, 16:35 UTCMay 15, 17:10 UTC35m
2026-05-14 N172AL PAO → PAO May 14, 23:50 UTCMay 15, 00:05 UTC15m
2026-05-14 N172AL PAO → PAO May 14, 23:35 UTCMay 14, 23:45 UTC10m
2026-05-14 N172AL PAO → PAO May 14, 21:30 UTCMay 14, 22:30 UTC1h 0m
2026-05-14 N172AL PAO → PAO May 14, 14:05 UTCMay 14, 14:30 UTC25m
2026-05-13 N172AL PAO → PAO May 13, 00:55 UTCMay 13, 02:25 UTC1h 30m
2026-05-12 N172AL PAO → PAO May 12, 23:15 UTCMay 12, 23:50 UTC35m
2026-05-12 N172AL PAO → PAO May 12, 20:40 UTCMay 12, 20:50 UTC10m
2026-05-12 N172AL PAO → PAO May 12, 19:10 UTCMay 12, 20:25 UTC1h 15m
2026-05-12 N172AL PAO → PAO May 12, 18:55 UTCMay 12, 19:00 UTC5m
2026-05-12 N172AL SQL → PAO May 12, 03:55 UTCMay 12, 04:05 UTC10m
2026-05-11 N172AL PAO → PAO May 11, 21:40 UTCMay 11, 21:45 UTC5m
2026-05-11 N172AL PAO → PAO May 11, 20:35 UTCMay 11, 21:25 UTC50m
2026-05-10 N172AL SAC → PAO May 10, 23:05 UTCMay 11, 00:05 UTC1h 0m
2026-05-10 N172AL PAO → SAC May 10, 19:45 UTCMay 10, 20:30 UTC45m
2026-05-10 N172AL PAO → PAO May 10, 17:15 UTCMay 10, 17:34 UTC20m
2026-05-10 N172AL SAC → PAO May 10, 00:20 UTCMay 10, 01:14 UTC55m
2026-05-09 N172AL PAO → SAC May 9, 23:20 UTCMay 10, 00:09 UTC50m
2026-05-09 N172AL - May 9, 19:45 UTCMay 9, 20:20 UTC35m

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 N172AL page for operator, model, and routing details .

Mode-S A120A6 frequently asked

What is Mode-S code A120A6?
A120A6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N172AL.
Where is Mode-S A120A6 registered?
Mode-S code A120A6 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 A120A6 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A120A6, octal 50220246, decimal 10,559,654.
What flights does A120A6 operate?
Mode-S A120A6 has broadcast 1 distinct callsign, including N172AL.