sensors Mode-S transponder

A8E9FD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N67350 · operated by UNITED AIRLINES INC

Hex
A8E9FD
Octal
52164775
Decimal
11,069,949
Country
US
Tail
N67350
Type
B38M
No current signal · last broadcast 23h ago
Flights observed
9
Distinct callsigns
5
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S A8E9FD.

Country allocation

The ICAO 24-bit address A8E9FD 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 5 distinct

Callsign Airline Flights Last seen
UAL369 - 4 2026-04-13
UAL2386 - 2 2026-04-13
UAL8106 - 1 2026-04-13
UAL574 - 1 2026-04-12
UAL2019 - 1 2026-04-13

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-13 UAL2019 - Apr 13, 23:00 UTCApr 13, 23:45 UTC45m
2026-04-13 UAL8106 - Apr 13, 20:12 UTCApr 13, 21:06 UTC54m
2026-04-13 UAL369 - Apr 13, 16:15 UTCApr 13, 17:30 UTC1h 15m
2026-04-13 UAL369 - Apr 13, 15:50 UTCApr 13, 17:30 UTC1h 40m
2026-04-13 UAL369 - Apr 13, 12:20 UTCApr 13, 16:15 UTC3h 55m
2026-04-13 UAL369 - Apr 13, 11:50 UTCApr 13, 12:15 UTC25m
2026-04-13 UAL2386 - Apr 13, 00:20 UTCApr 13, 02:15 UTC1h 55m
2026-04-13 UAL2386 - Apr 13, 00:00 UTCApr 13, 02:15 UTC2h 15m
2026-04-12 UAL574 LAS → SFO Apr 12, 18:50 UTCApr 12, 20:05 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 N67350 page for operator, model, and routing details .

Mode-S A8E9FD frequently asked

What is Mode-S code A8E9FD?
A8E9FD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N67350.
Where is Mode-S A8E9FD registered?
Mode-S code A8E9FD 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 A8E9FD broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8E9FD, octal 52164775, decimal 11,069,949.
What flights does A8E9FD operate?
Mode-S A8E9FD has broadcast 5 distinct callsigns, including UAL369, UAL2386, UAL8106, UAL574, UAL2019.