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sensors Mode-S transponder

ACF1DA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N933LT · PIPER PA-44 Seminole · operated by AEROSIM FLIGHT ACADEMY

Hex
ACF1DA
Octal
53170732
Decimal
11,334,106
Country
US
Tail
N933LT
Type
PA44
Broadcasting now · callsign LFA686 · 4,425 ft
Flights observed
201
Distinct callsigns
1
Country
US
Last broadcast
4m ago

Current position

ACF1DA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ACF1DA 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
LFA686 - 201 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 LFA686 - Jul 14, 14:15 UTCJul 14, 14:30 UTC15m
2026-07-14 LFA686 - Jul 14, 10:50 UTCJul 14, 12:10 UTC1h 20m
2026-07-13 LFA686 - Jul 13, 15:00 UTCJul 13, 16:25 UTC1h 25m
2026-07-13 LFA686 - Jul 13, 12:15 UTCJul 13, 14:00 UTC1h 45m
2026-07-12 LFA686 SFB → SFB Jul 12, 14:15 UTCJul 12, 15:20 UTC1h 5m
2026-07-12 LFA686 - Jul 12, 11:30 UTCJul 12, 12:05 UTC35m
2026-07-11 LFA686 - Jul 11, 14:25 UTCJul 11, 15:35 UTC1h 10m
2026-07-09 LFA686 SFB → SFB Jul 9, 17:00 UTCJul 9, 18:20 UTC1h 20m
2026-07-09 LFA686 SFB → SFB Jul 9, 14:00 UTCJul 9, 15:30 UTC1h 30m
2026-07-08 LFA686 - Jul 8, 18:55 UTCJul 8, 19:15 UTC20m
2026-07-08 LFA686 - Jul 8, 17:45 UTCJul 8, 18:05 UTC20m
2026-07-08 LFA686 - Jul 8, 14:55 UTCJul 8, 15:15 UTC20m
2026-07-08 LFA686 - Jul 8, 12:35 UTCJul 8, 12:55 UTC20m
2026-07-08 LFA686 - Jul 8, 10:15 UTCJul 8, 10:40 UTC25m
2026-07-07 LFA686 - Jul 7, 19:15 UTCJul 7, 21:00 UTC1h 45m
2026-07-07 LFA686 - Jul 7, 16:20 UTCJul 7, 17:55 UTC1h 35m
2026-07-07 LFA686 - Jul 7, 14:05 UTCJul 7, 15:15 UTC1h 10m
2026-07-07 LFA686 - Jul 7, 11:20 UTCJul 7, 13:10 UTC1h 50m
2026-07-06 LFA686 - Jul 6, 14:15 UTCJul 6, 15:45 UTC1h 30m
2026-07-06 LFA686 - Jul 6, 11:05 UTCJul 6, 11:15 UTC10m
2026-07-06 LFA686 - Jul 6, 03:35 UTCJul 6, 04:20 UTC45m
2026-07-06 LFA686 - Jul 6, 01:30 UTCJul 6, 02:25 UTC55m
2026-07-05 LFA686 - Jul 5, 12:00 UTCJul 5, 13:55 UTC1h 55m
2026-07-04 LFA686 SFB → SFB Jul 4, 18:00 UTCJul 4, 18:50 UTC50m
2026-07-04 LFA686 - Jul 4, 15:20 UTCJul 4, 16:40 UTC1h 20m
2026-07-04 LFA686 - Jul 4, 10:55 UTCJul 4, 12:35 UTC1h 40m
2026-07-03 LFA686 - Jul 3, 19:00 UTCJul 3, 19:35 UTC35m
2026-07-03 LFA686 - Jul 3, 15:20 UTCJul 3, 17:00 UTC1h 40m
2026-07-03 LFA686 - Jul 3, 12:20 UTCJul 3, 14:00 UTC1h 40m
2026-07-02 LFA686 - Jul 2, 19:45 UTCJul 2, 20:40 UTC55m
2026-07-02 LFA686 - Jul 2, 17:25 UTCJul 2, 18:00 UTC35m
2026-07-02 LFA686 - Jul 2, 15:55 UTCJul 2, 16:40 UTC45m
2026-07-02 LFA686 SFB → SFB Jul 2, 13:40 UTCJul 2, 14:30 UTC50m
2026-07-01 LFA686 - Jul 1, 22:10 UTCJul 1, 23:10 UTC1h 0m
2026-07-01 LFA686 - Jul 1, 19:05 UTCJul 1, 20:55 UTC1h 50m
2026-07-01 LFA686 SFB → SFB Jul 1, 15:40 UTCJul 1, 17:00 UTC1h 20m
2026-07-01 LFA686 - Jul 1, 13:05 UTCJul 1, 14:40 UTC1h 35m
2026-07-01 LFA686 - Jul 1, 04:00 UTCJul 1, 04:45 UTC45m
2026-07-01 LFA686 - Jul 1, 01:35 UTCJul 1, 02:45 UTC1h 10m
2026-06-30 LFA686 - Jun 30, 16:55 UTCJun 30, 18:05 UTC1h 10m
2026-06-30 LFA686 - Jun 30, 12:05 UTCJun 30, 13:40 UTC1h 35m
2026-06-29 LFA686 - Jun 29, 22:55 UTCJun 29, 23:14 UTC20m
2026-06-29 LFA686 - Jun 29, 19:44 UTCJun 29, 20:59 UTC1h 15m
2026-06-29 LFA686 - Jun 29, 16:59 UTCJun 29, 18:25 UTC1h 25m
2026-06-29 LFA686 - Jun 29, 14:14 UTCJun 29, 15:54 UTC1h 40m
2026-06-29 LFA686 - Jun 29, 03:25 UTCJun 29, 04:20 UTC55m
2026-06-29 LFA686 - Jun 29, 01:20 UTCJun 29, 02:00 UTC40m
2026-06-28 LFA686 - Jun 28, 19:40 UTCJun 28, 20:29 UTC50m
2026-06-28 LFA686 SFB → SFB Jun 28, 12:09 UTCJun 28, 13:49 UTC1h 40m
2026-06-27 LFA686 - Jun 27, 15:10 UTCJun 27, 16:24 UTC1h 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 N933LT page for operator, model, and routing details .

Mode-S ACF1DA frequently asked

What is Mode-S code ACF1DA?
ACF1DA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N933LT.
Where is Mode-S ACF1DA registered?
Mode-S code ACF1DA 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 ACF1DA broadcasting right now?
Yes. Mode-S ACF1DA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACF1DA, octal 53170732, decimal 11,334,106.
What flights does ACF1DA operate?
Mode-S ACF1DA has broadcast 1 distinct callsign, including LFA686.