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sensors Mode-S transponder

A18972

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N19886 · CESSNA 172 Skyhawk · operated by SILVER EXPRESS CO, FLYING ACADEMY

Hex
A18972
Octal
50304562
Decimal
10,586,482
Country
US
Tail
N19886
Type
C172
No current signal · last broadcast 1d ago
Flights observed
121
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A18972.

Country allocation

The ICAO 24-bit address A18972 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
N19886 - 121 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N19886 - Jul 17, 04:14 UTCJul 17, 04:25 UTC10m
2026-07-17 N19886 - Jul 17, 01:59 UTCJul 17, 02:10 UTC10m
2026-07-16 N19886 - Jul 16, 22:15 UTCJul 16, 22:30 UTC15m
2026-07-16 N19886 - Jul 16, 19:55 UTCJul 16, 20:15 UTC20m
2026-07-16 N19886 SBA → VNY Jul 16, 04:15 UTCJul 16, 05:15 UTC1h 0m
2026-07-16 N19886 VNY → SBA Jul 16, 02:35 UTCJul 16, 03:25 UTC50m
2026-07-14 N19886 VNY → VNY Jul 14, 19:20 UTCJul 14, 19:25 UTC5m
2026-07-14 N19886 - Jul 14, 04:15 UTCJul 14, 04:30 UTC15m
2026-07-14 N19886 - Jul 14, 00:30 UTCJul 14, 01:20 UTC50m
2026-07-12 N19886 - Jul 12, 20:50 UTCJul 12, 21:20 UTC30m
2026-07-12 N19886 - Jul 12, 18:20 UTCJul 12, 19:15 UTC55m
2026-07-11 N19886 - Jul 11, 20:20 UTCJul 11, 20:50 UTC30m
2026-07-11 N19886 - Jul 11, 17:20 UTCJul 11, 17:40 UTC20m
2026-07-03 N19886 - Jul 3, 18:10 UTCJul 3, 18:50 UTC40m
2026-07-03 N19886 - Jul 3, 16:30 UTCJul 3, 16:50 UTC20m
2026-06-30 N19886 VNY → VNY Jun 30, 17:30 UTCJun 30, 18:55 UTC1h 25m
2026-06-25 N19886 - Jun 25, 01:14 UTCJun 25, 02:05 UTC50m
2026-06-24 N19886 - Jun 24, 21:44 UTCJun 24, 22:04 UTC20m
2026-06-24 N19886 HMT → MYF Jun 24, 04:15 UTCJun 24, 05:05 UTC50m
2026-06-24 N19886 VNY → HMT Jun 24, 00:15 UTCJun 24, 01:09 UTC55m
2026-06-22 N19886 VNY → VNY Jun 22, 22:44 UTCJun 22, 23:45 UTC1h 0m
2026-06-21 N19886 SBA → VNY Jun 21, 02:30 UTCJun 21, 03:30 UTC1h 0m
2026-06-20 N19886 VNY → SBA Jun 20, 21:05 UTCJun 20, 22:10 UTC1h 5m
2026-06-14 N19886 - Jun 14, 20:25 UTCJun 14, 21:25 UTC1h 0m
2026-06-14 N19886 - Jun 14, 17:05 UTCJun 14, 18:20 UTC1h 15m
2026-06-14 N19886 HMT → RIV Jun 14, 03:25 UTCJun 14, 03:55 UTC30m
2026-06-14 N19886 VNY → HMT Jun 14, 01:50 UTCJun 14, 03:20 UTC1h 30m
2026-06-13 N19886 VNY → VNY Jun 13, 17:20 UTCJun 13, 17:45 UTC25m
2026-06-12 N19886 - Jun 12, 05:40 UTCJun 12, 06:20 UTC40m
2026-06-12 N19886 RAL → RAL Jun 12, 05:25 UTCJun 12, 05:35 UTC10m
2026-06-12 N19886 RAL → RAL Jun 12, 05:05 UTCJun 12, 05:20 UTC15m
2026-06-12 N19886 VNY → RAL Jun 12, 04:00 UTCJun 12, 05:00 UTC1h 0m
2026-06-12 N19886 VNY → VNY Jun 12, 00:10 UTCJun 12, 01:40 UTC1h 31m
2026-06-11 N19886 RAL → VNY Jun 11, 17:45 UTCJun 11, 18:55 UTC1h 10m
2026-06-11 N19886 VNY → RAL Jun 11, 16:15 UTCJun 11, 17:10 UTC55m
2026-06-10 N19886 - Jun 10, 23:10 UTCJun 11, 01:10 UTC2h 0m
2026-06-10 N19886 - Jun 10, 21:35 UTCJun 10, 22:30 UTC55m
2026-06-10 N19886 RAL → VNY Jun 10, 17:00 UTCJun 10, 18:25 UTC1h 25m
2026-06-10 N19886 - Jun 10, 15:50 UTCJun 10, 16:25 UTC35m
2026-06-10 N19886 - Jun 10, 01:35 UTCJun 10, 02:15 UTC40m
2026-06-10 N19886 VNY → RAL Jun 10, 00:15 UTCJun 10, 01:00 UTC45m
2026-06-09 N19886 - Jun 9, 21:30 UTCJun 9, 23:15 UTC1h 45m
2026-06-09 N19886 VNY → RAL Jun 9, 20:00 UTCJun 9, 20:40 UTC40m
2026-06-08 N19886 RAL → VNY Jun 8, 22:55 UTCJun 8, 23:55 UTC1h 0m
2026-06-08 N19886 VNY → RAL Jun 8, 20:50 UTCJun 8, 22:10 UTC1h 20m
2026-06-08 N19886 VNY → VNY Jun 8, 17:15 UTCJun 8, 17:35 UTC20m
2026-06-08 N19886 - Jun 8, 00:40 UTCJun 8, 01:10 UTC30m
2026-06-07 N19886 - Jun 7, 23:25 UTCJun 7, 23:40 UTC15m
2026-06-07 N19886 - Jun 7, 21:05 UTCJun 7, 22:40 UTC1h 35m
2026-06-07 N19886 - Jun 7, 18:05 UTCJun 7, 19:15 UTC1h 10m

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 N19886 page for operator, model, and routing details .

Mode-S A18972 frequently asked

What is Mode-S code A18972?
A18972 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N19886.
Where is Mode-S A18972 registered?
Mode-S code A18972 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 A18972 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A18972, octal 50304562, decimal 10,586,482.
What flights does A18972 operate?
Mode-S A18972 has broadcast 1 distinct callsign, including N19886.