Apparatus

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sensors Mode-S transponder

A00A1A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N101TF · CESSNA 172 Skyhawk · operated by ALF IX LLC

Hex
A00A1A
Octal
50005032
Decimal
10,488,346
Country
US
Tail
N101TF
Type
C172
No current signal · last broadcast 6h ago
Flights observed
112
Distinct callsigns
1
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A00A1A.

Country allocation

The ICAO 24-bit address A00A1A 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
N101TF - 112 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 N101TF DBQ → DBQ May 29, 21:35 UTCMay 29, 23:50 UTC2h 15m
2026-05-29 N101TF DBQ → DBQ May 29, 18:35 UTCMay 29, 19:40 UTC1h 5m
2026-05-29 N101TF DBQ → DBQ May 29, 14:20 UTCMay 29, 15:20 UTC1h 0m
2026-05-29 N101TF DBQ → DBQ May 29, 12:45 UTCMay 29, 13:30 UTC45m
2026-05-28 N101TF DBQ → DBQ May 28, 22:40 UTCMay 28, 23:30 UTC50m
2026-05-28 N101TF DBQ → DBQ May 28, 19:10 UTCMay 28, 21:05 UTC1h 55m
2026-05-28 N101TF DBQ → DBQ May 28, 17:25 UTCMay 28, 18:20 UTC55m
2026-05-28 N101TF DBQ → DBQ May 28, 14:50 UTCMay 28, 15:55 UTC1h 5m
2026-05-26 N101TF DBQ → DBQ May 26, 15:45 UTCMay 26, 16:50 UTC1h 5m
2026-05-26 N101TF DBQ → DBQ May 26, 13:40 UTCMay 26, 14:45 UTC1h 5m
2026-05-22 N101TF - May 22, 22:00 UTCMay 22, 22:25 UTC25m
2026-05-22 N101TF - May 22, 21:25 UTCMay 22, 21:55 UTC30m
2026-05-22 N101TF - May 22, 19:40 UTCMay 22, 19:55 UTC15m
2026-05-22 N101TF - May 22, 18:55 UTCMay 22, 19:10 UTC15m
2026-05-22 N101TF - May 22, 14:05 UTCMay 22, 17:35 UTC3h 30m
2026-05-21 N101TF - May 21, 19:45 UTCMay 21, 22:00 UTC2h 15m
2026-05-21 N101TF - May 21, 17:25 UTCMay 21, 18:30 UTC1h 5m
2026-05-21 N101TF - May 21, 15:25 UTCMay 21, 16:15 UTC50m
2026-05-20 N101TF - May 20, 18:30 UTCMay 20, 19:00 UTC30m
2026-05-20 N101TF DBQ → DBQ May 20, 14:50 UTCMay 20, 15:40 UTC50m
2026-05-20 N101TF - May 20, 12:50 UTCMay 20, 13:35 UTC45m
2026-05-19 N101TF DBQ → DBQ May 19, 23:40 UTCMay 20, 00:30 UTC50m
2026-05-19 N101TF DBQ → DBQ May 19, 20:50 UTCMay 19, 22:40 UTC1h 50m
2026-05-18 N101TF DBQ → DBQ May 18, 22:20 UTCMay 18, 23:05 UTC45m
2026-05-18 N101TF DBQ → DBQ May 18, 19:55 UTCMay 18, 21:20 UTC1h 25m
2026-05-18 N101TF DBQ → DBQ May 18, 17:35 UTCMay 18, 17:55 UTC20m
2026-05-18 N101TF DBQ → DBQ May 18, 15:20 UTCMay 18, 16:20 UTC1h 0m
2026-05-16 N101TF DBQ → DBQ May 16, 20:50 UTCMay 16, 22:35 UTC1h 45m
2026-05-16 N101TF DBQ → DBQ May 16, 16:35 UTCMay 16, 18:20 UTC1h 45m
2026-05-15 N101TF DBQ → DBQ May 15, 23:40 UTCMay 16, 00:45 UTC1h 5m
2026-05-15 N101TF DBQ → DBQ May 15, 21:25 UTCMay 15, 22:45 UTC1h 20m
2026-05-15 N101TF DBQ → DBQ May 15, 16:45 UTCMay 15, 17:45 UTC1h 0m
2026-05-15 N101TF DBQ → DBQ May 15, 14:50 UTCMay 15, 15:50 UTC1h 0m
2026-05-15 N101TF DBQ → DBQ May 15, 12:45 UTCMay 15, 13:35 UTC50m
2026-05-14 N101TF GRB → DBQ May 14, 19:25 UTCMay 14, 21:30 UTC2h 5m
2026-05-14 N101TF DBQ → GRB May 14, 16:10 UTCMay 14, 17:45 UTC1h 35m
2026-05-13 N101TF DBQ → DBQ May 13, 18:30 UTCMay 13, 19:15 UTC45m
2026-05-13 N101TF DBQ → DBQ May 13, 16:25 UTCMay 13, 17:20 UTC55m
2026-05-13 N101TF DBQ → DBQ May 13, 14:40 UTCMay 13, 15:15 UTC35m
2026-05-13 N101TF - May 13, 13:10 UTCMay 13, 13:35 UTC25m
2026-05-13 N101TF - May 13, 12:45 UTCMay 13, 13:05 UTC20m
2026-05-08 N101TF DBQ → DBQ May 8, 03:09 UTCMay 8, 03:35 UTC25m
2026-05-08 N101TF DBQ → DBQ May 8, 02:44 UTCMay 8, 03:04 UTC20m
2026-05-07 N101TF DBQ → DBQ May 7, 17:45 UTCMay 7, 18:20 UTC35m
2026-05-07 N101TF - May 7, 16:25 UTCMay 7, 16:50 UTC25m
2026-05-07 N101TF - May 7, 15:30 UTCMay 7, 15:55 UTC25m
2026-05-07 N101TF DBQ → DBQ May 7, 01:45 UTCMay 7, 01:50 UTC5m
2026-05-06 N101TF DBQ → DBQ May 6, 15:10 UTCMay 6, 16:00 UTC50m
2026-05-06 N101TF DBQ → DBQ May 6, 12:30 UTCMay 6, 14:00 UTC1h 30m
2026-05-06 N101TF - May 6, 02:35 UTCMay 6, 04:10 UTC1h 35m

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 N101TF page for operator, model, and routing details .

Mode-S A00A1A frequently asked

What is Mode-S code A00A1A?
A00A1A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N101TF.
Where is Mode-S A00A1A registered?
Mode-S code A00A1A 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 A00A1A broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A00A1A, octal 50005032, decimal 10,488,346.
What flights does A00A1A operate?
Mode-S A00A1A has broadcast 1 distinct callsign, including N101TF.