Apparatus

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sensors Mode-S transponder

A8D889

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N66937 · CESSNA 152

Hex
A8D889
Octal
52154211
Decimal
11,065,481
Country
US
Tail
N66937
Type
C152
Broadcasting now · callsign N678KS · 2,900 ft
Flights observed
158
Distinct callsigns
1
Country
US
Last broadcast
4h ago

Current position

A8D889 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A8D889 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
N678KS - 157 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N678KS - Jul 14, 13:55 UTCJul 14, 15:45 UTC1h 50m
2026-07-14 N678KS LAL → LAL Jul 14, 11:00 UTCJul 14, 13:15 UTC2h 15m
2026-07-13 N678KS - Jul 13, 14:55 UTCJul 13, 15:20 UTC25m
2026-07-13 N678KS - Jul 13, 13:00 UTCJul 13, 14:10 UTC1h 10m
2026-07-13 N678KS - Jul 13, 10:50 UTCJul 13, 11:40 UTC50m
2026-07-12 - LAL → LAL Jul 12, 14:10 UTCJul 12, 14:20 UTC10m
2026-07-12 N678KS - Jul 12, 11:10 UTCJul 12, 13:10 UTC2h 0m
2026-07-11 N678KS - Jul 11, 19:00 UTCJul 11, 19:30 UTC30m
2026-07-11 N678KS - Jul 11, 16:55 UTCJul 11, 17:35 UTC40m
2026-07-11 N678KS - Jul 11, 13:20 UTCJul 11, 14:10 UTC50m
2026-07-11 N678KS - Jul 11, 11:30 UTCJul 11, 12:30 UTC1h 0m
2026-06-29 N678KS - Jun 29, 16:10 UTCJun 29, 16:59 UTC50m
2026-06-29 N678KS - Jun 29, 14:14 UTCJun 29, 15:30 UTC1h 15m
2026-06-29 N678KS - Jun 29, 11:29 UTCJun 29, 13:19 UTC1h 50m
2026-06-28 N678KS - Jun 28, 16:09 UTCJun 28, 17:10 UTC1h 0m
2026-06-28 N678KS - Jun 28, 14:19 UTCJun 28, 15:14 UTC55m
2026-06-28 N678KS - Jun 28, 12:19 UTCJun 28, 12:55 UTC35m
2026-06-27 N678KS - Jun 27, 18:09 UTCJun 27, 18:45 UTC35m
2026-06-27 N678KS - Jun 27, 15:05 UTCJun 27, 15:39 UTC35m
2026-06-27 N678KS - Jun 27, 11:59 UTCJun 27, 13:00 UTC1h 0m
2026-06-26 N678KS - Jun 26, 16:54 UTCJun 26, 17:59 UTC1h 5m
2026-06-26 N678KS - Jun 26, 12:29 UTCJun 26, 13:34 UTC1h 5m
2026-06-25 N678KS - Jun 25, 13:50 UTCJun 25, 15:10 UTC1h 20m
2026-06-25 N678KS LAL → LAL Jun 25, 11:04 UTCJun 25, 11:30 UTC25m
2026-06-24 N678KS - Jun 24, 17:05 UTCJun 24, 18:15 UTC1h 10m
2026-06-24 N678KS - Jun 24, 15:39 UTCJun 24, 16:05 UTC25m
2026-06-24 N678KS - Jun 24, 11:54 UTCJun 24, 13:24 UTC1h 30m
2026-06-23 N678KS - Jun 23, 22:25 UTCJun 23, 23:00 UTC35m
2026-06-23 N678KS - Jun 23, 20:10 UTCJun 23, 21:24 UTC1h 15m
2026-06-23 N678KS - Jun 23, 18:39 UTCJun 23, 18:55 UTC15m
2026-06-23 N678KS - Jun 23, 17:04 UTCJun 23, 17:50 UTC45m
2026-06-23 N678KS - Jun 23, 12:49 UTCJun 23, 13:55 UTC1h 5m
2026-06-22 N678KS - Jun 22, 17:55 UTCJun 22, 19:05 UTC1h 10m
2026-06-22 N678KS - Jun 22, 13:39 UTCJun 22, 14:55 UTC1h 15m
2026-06-22 N678KS LAL → LAL Jun 22, 11:44 UTCJun 22, 12:25 UTC40m
2026-06-21 N678KS - Jun 21, 14:54 UTCJun 21, 16:14 UTC1h 20m
2026-06-21 N678KS - Jun 21, 12:35 UTCJun 21, 13:34 UTC1h 0m
2026-06-21 N678KS - Jun 21, 10:54 UTCJun 21, 11:40 UTC45m
2026-06-20 N678KS - Jun 20, 02:29 UTCJun 20, 04:09 UTC1h 40m
2026-06-20 N678KS - Jun 20, 01:44 UTCJun 20, 01:55 UTC10m
2026-06-20 N678KS - Jun 20, 00:59 UTCJun 20, 01:09 UTC10m
2026-06-19 N678KS - Jun 19, 20:55 UTCJun 19, 21:59 UTC1h 5m
2026-06-19 N678KS - Jun 19, 17:04 UTCJun 19, 17:39 UTC35m
2026-06-18 N678KS - Jun 18, 13:05 UTCJun 18, 14:05 UTC1h 0m
2026-06-18 N678KS - Jun 18, 11:20 UTCJun 18, 12:15 UTC55m
2026-06-16 N678KS - Jun 16, 10:55 UTCJun 16, 11:40 UTC45m
2026-06-12 N678KS - Jun 12, 17:50 UTCJun 12, 19:10 UTC1h 20m
2026-06-12 N678KS - Jun 12, 16:05 UTCJun 12, 17:15 UTC1h 10m
2026-06-12 N678KS LAL → LAL Jun 12, 13:35 UTCJun 12, 15:15 UTC1h 40m
2026-06-11 N678KS - Jun 11, 16:05 UTCJun 11, 17:10 UTC1h 5m

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 N66937 page for operator, model, and routing details .

Mode-S A8D889 frequently asked

What is Mode-S code A8D889?
A8D889 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N66937.
Where is Mode-S A8D889 registered?
Mode-S code A8D889 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 A8D889 broadcasting right now?
Yes. Mode-S A8D889 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8D889, octal 52154211, decimal 11,065,481.
What flights does A8D889 operate?
Mode-S A8D889 has broadcast 1 distinct callsign, including N678KS.