Apparatus

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sensors Mode-S transponder

ABFF62

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N872SP · CESSNA 172 Skyhawk · operated by CHRISTIANSEN AVIATION LLC

Hex
ABFF62
Octal
52777542
Decimal
11,272,034
Country
US
Tail
N872SP
Type
C172
No current signal · last broadcast 12h ago
Flights observed
33
Distinct callsigns
1
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S ABFF62.

Country allocation

The ICAO 24-bit address ABFF62 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
N872SP - 33 2026-04-18

Recent flights last 33

DateFlightRouteTakeoffLandingDuration
2026-04-18 N872SP - Apr 18, 04:45 UTCApr 18, 05:30 UTC45m
2026-04-18 N872SP - Apr 18, 04:35 UTCApr 18, 05:20 UTC45m
2026-04-18 N872SP LNS → RDG Apr 18, 03:55 UTCApr 18, 04:20 UTC25m
2026-04-18 N872SP - Apr 18, 03:25 UTCApr 18, 03:45 UTC20m
2026-04-18 N872SP TTN → PTW Apr 18, 02:30 UTCApr 18, 03:15 UTC45m
2026-04-17 N872SP - Apr 17, 16:35 UTCApr 17, 17:15 UTC40m
2026-04-17 N872SP - Apr 17, 13:25 UTCApr 17, 13:40 UTC15m
2026-04-17 N872SP - Apr 17, 12:40 UTCApr 17, 13:15 UTC35m
2026-04-17 N872SP - Apr 17, 03:20 UTCApr 17, 04:45 UTC1h 26m
2026-04-17 N872SP - Apr 17, 01:20 UTCApr 17, 02:10 UTC50m
2026-04-17 N872SP - Apr 17, 00:20 UTCApr 17, 01:15 UTC55m
2026-04-16 N872SP DYL → TTN Apr 16, 15:15 UTCApr 16, 15:40 UTC25m
2026-04-16 N872SP - Apr 16, 14:25 UTCApr 16, 15:05 UTC40m
2026-04-16 N872SP - Apr 16, 13:15 UTCApr 16, 13:40 UTC25m
2026-04-16 N872SP - Apr 16, 12:39 UTCApr 16, 13:05 UTC25m
2026-04-16 N872SP - Apr 16, 11:09 UTCApr 16, 11:39 UTC30m
2026-04-16 N872SP - Apr 16, 10:49 UTCApr 16, 11:04 UTC15m
2026-04-16 N872SP - Apr 16, 02:04 UTCApr 16, 02:34 UTC30m
2026-04-16 N872SP - Apr 16, 01:35 UTCApr 16, 01:50 UTC15m
2026-04-16 N872SP - Apr 16, 01:10 UTCApr 16, 01:25 UTC15m
2026-04-16 N872SP - Apr 16, 00:25 UTCApr 16, 01:05 UTC40m
2026-04-15 N872SP - Apr 15, 21:35 UTCApr 15, 22:05 UTC30m
2026-04-15 N872SP DYL → TTN Apr 15, 19:05 UTCApr 15, 19:35 UTC30m
2026-04-15 N872SP - Apr 15, 18:30 UTCApr 15, 19:00 UTC30m
2026-04-15 N872SP - Apr 15, 15:05 UTCApr 15, 16:20 UTC1h 15m
2026-04-15 N872SP - Apr 15, 14:40 UTCApr 15, 14:55 UTC14m
2026-04-15 N872SP DYL → TTN Apr 15, 13:05 UTCApr 15, 13:35 UTC30m
2026-04-15 N872SP TTN → DYL Apr 15, 11:20 UTCApr 15, 12:55 UTC1h 35m
2026-04-14 N872SP PNE → TTN Apr 14, 16:50 UTCApr 14, 17:20 UTC30m
2026-04-14 N872SP - Apr 14, 14:50 UTCApr 14, 15:50 UTC1h 0m
2026-04-12 N872SP - Apr 12, 23:55 UTCApr 13, 00:10 UTC15m
2026-04-12 N872SP - Apr 12, 19:40 UTCApr 12, 20:15 UTC35m
2026-04-12 N872SP - Apr 12, 17:15 UTCApr 12, 18:30 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 N872SP page for operator, model, and routing details .

Mode-S ABFF62 frequently asked

What is Mode-S code ABFF62?
ABFF62 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N872SP.
Where is Mode-S ABFF62 registered?
Mode-S code ABFF62 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 ABFF62 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABFF62, octal 52777542, decimal 11,272,034.
What flights does ABFF62 operate?
Mode-S ABFF62 has broadcast 1 distinct callsign, including N872SP.