Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACF88C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N935DE · PIPER PA-28-140/150/160/180 · operated by LONG ISLAND AVIATORS LLC

Hex
ACF88C
Octal
53174214
Decimal
11,335,820
Country
US
Tail
N935DE
Type
P28A
No current signal · last broadcast 6h ago
Flights observed
238
Distinct callsigns
1
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S ACF88C.

Country allocation

The ICAO 24-bit address ACF88C 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
N935DE - 238 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N935DE - Jul 13, 22:35 UTCJul 13, 23:00 UTC25m
2026-07-13 N935DE - Jul 13, 18:35 UTCJul 13, 19:30 UTC55m
2026-07-13 N935DE - Jul 13, 14:05 UTCJul 13, 14:15 UTC10m
2026-07-13 N935DE FRG → FRG Jul 13, 11:40 UTCJul 13, 13:05 UTC1h 25m
2026-07-12 N935DE - Jul 12, 23:55 UTCJul 13, 00:50 UTC55m
2026-07-12 N935DE - Jul 12, 21:15 UTCJul 12, 21:55 UTC40m
2026-07-12 N935DE - Jul 12, 17:35 UTCJul 12, 18:20 UTC45m
2026-07-12 N935DE - Jul 12, 13:50 UTCJul 12, 14:35 UTC45m
2026-07-12 N935DE - Jul 12, 12:25 UTCJul 12, 12:55 UTC30m
2026-07-12 N935DE FRG → FRG Jul 12, 08:20 UTCJul 12, 09:40 UTC1h 20m
2026-07-11 N935DE - Jul 11, 22:05 UTCJul 11, 22:55 UTC50m
2026-07-11 N935DE - Jul 11, 15:15 UTCJul 11, 16:35 UTC1h 20m
2026-07-11 N935DE - Jul 11, 11:20 UTCJul 11, 14:05 UTC2h 45m
2026-07-10 N935DE - Jul 10, 19:45 UTCJul 10, 20:20 UTC35m
2026-07-10 N935DE - Jul 10, 17:30 UTCJul 10, 18:25 UTC55m
2026-07-10 N935DE - Jul 10, 12:45 UTCJul 10, 13:55 UTC1h 10m
2026-07-09 N935DE - Jul 9, 23:00 UTCJul 10, 00:30 UTC1h 30m
2026-07-09 N935DE BDR → BDR Jul 9, 21:50 UTCJul 9, 22:15 UTC25m
2026-07-09 N935DE - Jul 9, 20:15 UTCJul 9, 21:10 UTC55m
2026-07-09 N935DE - Jul 9, 17:25 UTCJul 9, 18:15 UTC50m
2026-07-09 N935DE FRG → FRG Jul 9, 14:45 UTCJul 9, 15:45 UTC1h 0m
2026-07-09 N935DE FRG → FRG Jul 9, 11:40 UTCJul 9, 13:05 UTC1h 25m
2026-07-09 N935DE ABE → FRG Jul 9, 02:45 UTCJul 9, 03:55 UTC1h 10m
2026-07-08 N935DE FRG → ABE Jul 8, 23:45 UTCJul 9, 00:55 UTC1h 10m
2026-07-08 N935DE - Jul 8, 20:35 UTCJul 8, 22:00 UTC1h 25m
2026-07-08 N935DE - Jul 8, 15:15 UTCJul 8, 16:20 UTC1h 5m
2026-07-08 N935DE - Jul 8, 12:55 UTCJul 8, 13:45 UTC50m
2026-07-08 N935DE - Jul 8, 10:20 UTCJul 8, 11:40 UTC1h 20m
2026-07-05 N935DE FRG → FRG Jul 5, 14:25 UTCJul 5, 15:05 UTC40m
2026-07-04 N935DE - Jul 4, 15:00 UTCJul 4, 15:50 UTC50m
2026-07-04 N935DE - Jul 4, 08:05 UTCJul 4, 09:10 UTC1h 5m
2026-07-03 N935DE - Jul 3, 16:35 UTCJul 3, 17:35 UTC1h 0m
2026-07-03 N935DE - Jul 3, 12:40 UTCJul 3, 13:55 UTC1h 15m
2026-07-03 N935DE - Jul 3, 10:40 UTCJul 3, 11:55 UTC1h 15m
2026-07-03 N935DE FRG → FRG Jul 3, 01:40 UTCJul 3, 03:45 UTC2h 5m
2026-07-02 N935DE - Jul 2, 15:25 UTCJul 2, 16:15 UTC50m
2026-07-02 N935DE FRG → FRG Jul 2, 13:15 UTCJul 2, 14:15 UTC1h 0m
2026-07-01 N935DE FRG → FRG Jul 1, 18:30 UTCJul 1, 19:50 UTC1h 20m
2026-07-01 N935DE FRG → FRG Jul 1, 15:00 UTCJul 1, 17:00 UTC2h 0m
2026-07-01 N935DE FRG → FRG Jul 1, 13:15 UTCJul 1, 14:20 UTC1h 5m
2026-07-01 N935DE FRG → FRG Jul 1, 00:05 UTCJul 1, 00:45 UTC40m
2026-06-30 N935DE - Jun 30, 20:40 UTCJun 30, 22:10 UTC1h 30m
2026-06-30 N935DE FRG → FRG Jun 30, 17:30 UTCJun 30, 19:25 UTC1h 55m
2026-06-30 N935DE FRG → FRG Jun 30, 14:05 UTCJun 30, 15:40 UTC1h 35m
2026-06-29 N935DE FRG → FRG Jun 29, 22:39 UTCJun 30, 00:00 UTC1h 20m
2026-06-29 N935DE - Jun 29, 19:44 UTCJun 29, 21:50 UTC2h 5m
2026-06-29 N935DE FRG → FRG Jun 29, 15:49 UTCJun 29, 16:55 UTC1h 5m
2026-06-29 N935DE - Jun 29, 12:39 UTCJun 29, 14:04 UTC1h 25m
2026-06-28 N935DE - Jun 28, 19:59 UTCJun 28, 20:54 UTC55m
2026-06-28 N935DE - Jun 28, 18:05 UTCJun 28, 19:04 UTC1h 0m

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 N935DE page for operator, model, and routing details .

Mode-S ACF88C frequently asked

What is Mode-S code ACF88C?
ACF88C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N935DE.
Where is Mode-S ACF88C registered?
Mode-S code ACF88C 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 ACF88C broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACF88C, octal 53174214, decimal 11,335,820.
What flights does ACF88C operate?
Mode-S ACF88C has broadcast 1 distinct callsign, including N935DE.