sensors Mode-S transponder

A94B08

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N69816 · BOEING 737-900 · operated by UNITED AIRLINES INC

Hex
A94B08
Octal
52245410
Decimal
11,094,792
Country
US
Tail
N69816
Type
B739
No current signal · last broadcast 1d ago
Flights observed
8
Distinct callsigns
4
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A94B08.

Country allocation

The ICAO 24-bit address A94B08 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 4 distinct

Callsign Airline Flights Last seen
UAL2606 - 4 2026-04-13
UAL2217 United Airlines 2 2026-04-13
UAL2236 United Airlines 1 2026-04-13
UAL1322 - 1 2026-04-12

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 UAL2236 SFO → BOS Apr 13, 20:10 UTCApr 13, 23:32 UTC3h 22m
2026-04-13 UAL2606 - Apr 13, 16:15 UTCApr 13, 18:00 UTC1h 45m
2026-04-13 UAL2606 - Apr 13, 15:50 UTCApr 13, 18:00 UTC2h 10m
2026-04-13 UAL2606 - Apr 13, 15:32 UTCApr 13, 18:14 UTC2h 42m
2026-04-13 UAL2606 - Apr 13, 15:32 UTCApr 13, 17:57 UTC2h 25m
2026-04-13 UAL2217 ORD → PIT Apr 13, 00:20 UTCApr 13, 00:50 UTC30m
2026-04-12 UAL2217 ORD → PIT Apr 12, 23:55 UTCApr 13, 00:50 UTC55m
2026-04-12 UAL1322 - Apr 12, 16:32 UTCApr 12, 20:09 UTC3h 37m

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 N69816 page for operator, model, and routing details .

Mode-S A94B08 frequently asked

What is Mode-S code A94B08?
A94B08 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N69816.
Where is Mode-S A94B08 registered?
Mode-S code A94B08 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 A94B08 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 A94B08, octal 52245410, decimal 11,094,792.
What flights does A94B08 operate?
Mode-S A94B08 has broadcast 4 distinct callsigns, including UAL2606, UAL2217, UAL2236, UAL1322.