Apparatus

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sensors Mode-S transponder

ABAFCD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N852LN · operated by AIR METHODS LLC

Hex
ABAFCD
Octal
52727715
Decimal
11,251,661
Country
US
Tail
N852LN
No current signal · last broadcast 17h ago
Flights observed
20
Distinct callsigns
1
Country
US
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S ABAFCD.

Country allocation

The ICAO 24-bit address ABAFCD 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
N852LN - 20 2026-07-23

Recent flights last 20

DateFlightRouteTakeoffLandingDuration
2026-07-23 N852LN - Jul 23, 06:50 UTCJul 23, 07:40 UTC50m
2026-07-21 N852LN - Jul 21, 03:25 UTCJul 21, 04:25 UTC1h 0m
2026-07-20 N852LN SCB → SCB Jul 20, 10:50 UTCJul 20, 12:00 UTC1h 10m
2026-07-18 N852LN - Jul 18, 01:45 UTCJul 18, 02:00 UTC15m
2026-07-18 N852LN - Jul 18, 00:45 UTCJul 18, 00:55 UTC10m
2026-07-17 N852LN - Jul 17, 18:34 UTCJul 17, 18:50 UTC15m
2026-07-17 N852LN - Jul 17, 18:00 UTCJul 17, 18:10 UTC10m
2026-07-17 N852LN - Jul 17, 17:05 UTCJul 17, 17:20 UTC15m
2026-07-16 N852LN - Jul 16, 17:35 UTCJul 16, 18:10 UTC35m
2026-07-16 N852LN - Jul 16, 16:49 UTCJul 16, 17:00 UTC10m
2026-07-16 N852LN - Jul 16, 06:40 UTCJul 16, 07:00 UTC20m
2026-07-16 N852LN - Jul 16, 05:35 UTCJul 16, 06:00 UTC25m
2026-07-15 N852LN - Jul 15, 23:15 UTCJul 16, 00:20 UTC1h 5m
2026-07-15 N852LN - Jul 15, 21:15 UTCJul 15, 21:30 UTC15m
2026-07-15 N852LN - Jul 15, 04:55 UTCJul 15, 05:10 UTC15m
2026-07-15 N852LN - Jul 15, 04:00 UTCJul 15, 04:20 UTC20m
2026-07-14 N852LN - Jul 14, 17:20 UTCJul 14, 17:35 UTC15m
2026-07-14 N852LN - Jul 14, 16:15 UTCJul 14, 17:00 UTC45m
2026-07-14 N852LN - Jul 14, 06:35 UTCJul 14, 07:10 UTC35m
2026-07-14 N852LN - Jul 14, 05:40 UTCJul 14, 06:05 UTC25m

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 N852LN page for operator, model, and routing details .

Mode-S ABAFCD frequently asked

What is Mode-S code ABAFCD?
ABAFCD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N852LN.
Where is Mode-S ABAFCD registered?
Mode-S code ABAFCD 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 ABAFCD broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABAFCD, octal 52727715, decimal 11,251,661.
What flights does ABAFCD operate?
Mode-S ABAFCD has broadcast 1 distinct callsign, including N852LN.