Apparatus

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sensors Mode-S transponder

A7DC99

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N6053F · PIPER PA-28-140/150/160/180 · operated by AMERIFLYERS OF TEXAS INC

Hex
A7DC99
Octal
51756231
Decimal
11,000,985
Country
US
Tail
N6053F
Type
P28A
Broadcasting now · callsign N6053F · 650 ft
Flights observed
180
Distinct callsigns
1
Country
US
Last broadcast
30m ago

Current position

A7DC99 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A7DC99 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
N6053F - 180 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-16 N6053F - Jun 16, 00:40 UTCJun 16, 02:15 UTC1h 35m
2026-06-15 N6053F - Jun 15, 19:55 UTCJun 15, 20:50 UTC55m
2026-06-15 N6053F - Jun 15, 18:35 UTCJun 15, 19:10 UTC35m
2026-06-15 N6053F MMU → MMU Jun 15, 15:55 UTCJun 15, 17:50 UTC1h 55m
2026-06-15 N6053F - Jun 15, 12:39 UTCJun 15, 14:30 UTC1h 50m
2026-06-14 N6053F - Jun 14, 23:05 UTCJun 14, 23:59 UTC54m
2026-06-14 N6053F - Jun 14, 19:40 UTCJun 14, 21:45 UTC2h 5m
2026-06-14 N6053F - Jun 14, 17:45 UTCJun 14, 18:45 UTC1h 0m
2026-06-14 N6053F - Jun 14, 16:30 UTCJun 14, 16:50 UTC20m
2026-06-14 N6053F - Jun 14, 13:50 UTCJun 14, 15:45 UTC1h 55m
2026-06-13 N6053F - Jun 13, 17:50 UTCJun 13, 19:45 UTC1h 55m
2026-06-13 N6053F - Jun 13, 14:45 UTCJun 13, 16:40 UTC1h 55m
2026-06-12 N6053F MMU → MMU Jun 12, 21:50 UTCJun 12, 22:10 UTC20m
2026-06-12 N6053F MMU → MMU Jun 12, 18:45 UTCJun 12, 19:50 UTC1h 5m
2026-06-12 N6053F - Jun 12, 15:05 UTCJun 12, 16:55 UTC1h 50m
2026-06-11 N6053F - Jun 11, 20:45 UTCJun 11, 22:55 UTC2h 10m
2026-06-11 N6053F - Jun 11, 19:15 UTCJun 11, 19:55 UTC40m
2026-06-11 N6053F - Jun 11, 14:50 UTCJun 11, 16:50 UTC2h 0m
2026-06-11 N6053F - Jun 11, 11:55 UTCJun 11, 13:40 UTC1h 45m
2026-06-10 N6053F - Jun 10, 22:30 UTCJun 10, 23:25 UTC55m
2026-06-10 N6053F - Jun 10, 10:25 UTCJun 10, 12:10 UTC1h 45m
2026-06-10 N6053F - Jun 10, 02:05 UTCJun 10, 02:50 UTC45m
2026-06-10 N6053F - Jun 10, 00:35 UTCJun 10, 01:35 UTC1h 0m
2026-06-09 N6053F - Jun 9, 21:45 UTCJun 9, 23:40 UTC1h 55m
2026-06-09 N6053F - Jun 9, 20:20 UTCJun 9, 21:15 UTC55m
2026-06-09 N6053F - Jun 9, 16:45 UTCJun 9, 18:50 UTC2h 5m
2026-06-09 N6053F MMU → MMU Jun 9, 11:45 UTCJun 9, 14:00 UTC2h 15m
2026-06-08 N6053F - Jun 8, 23:05 UTCJun 8, 23:30 UTC25m
2026-06-08 N6053F - Jun 8, 21:00 UTCJun 8, 21:40 UTC40m
2026-06-08 N6053F - Jun 8, 17:55 UTCJun 8, 19:50 UTC1h 55m
2026-06-08 N6053F - Jun 8, 16:20 UTCJun 8, 16:35 UTC15m
2026-06-08 N6053F - Jun 8, 14:30 UTCJun 8, 15:04 UTC35m
2026-06-07 N6053F - Jun 7, 17:10 UTCJun 7, 17:30 UTC20m
2026-06-07 N6053F - Jun 7, 15:40 UTCJun 7, 16:05 UTC25m
2026-06-05 N6053F - Jun 5, 19:25 UTCJun 5, 20:50 UTC1h 25m
2026-06-05 N6053F - Jun 5, 16:05 UTCJun 5, 17:45 UTC1h 40m
2026-06-05 N6053F - Jun 5, 12:45 UTCJun 5, 14:35 UTC1h 50m
2026-06-05 N6053F - Jun 5, 00:20 UTCJun 5, 00:40 UTC20m
2026-06-04 N6053F - Jun 4, 22:45 UTCJun 4, 23:15 UTC30m
2026-06-04 N6053F - Jun 4, 18:45 UTCJun 4, 20:50 UTC2h 5m
2026-06-04 N6053F - Jun 4, 15:50 UTCJun 4, 17:45 UTC1h 55m
2026-06-03 N6053F - Jun 3, 20:45 UTCJun 3, 22:50 UTC2h 5m
2026-06-03 N6053F - Jun 3, 14:00 UTCJun 3, 15:35 UTC1h 35m
2026-06-02 N6053F - Jun 2, 17:45 UTCJun 2, 18:45 UTC1h 0m
2026-06-02 N6053F - Jun 2, 13:55 UTCJun 2, 15:45 UTC1h 50m
2026-06-02 N6053F - Jun 2, 01:30 UTCJun 2, 02:30 UTC1h 0m
2026-06-01 N6053F - Jun 1, 18:55 UTCJun 1, 20:45 UTC1h 50m
2026-06-01 N6053F - Jun 1, 16:10 UTCJun 1, 17:45 UTC1h 35m
2026-05-31 N6053F - May 31, 18:55 UTCMay 31, 20:10 UTC1h 15m
2026-05-31 N6053F - May 31, 15:55 UTCMay 31, 17:15 UTC1h 20m

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 N6053F page for operator, model, and routing details .

Mode-S A7DC99 frequently asked

What is Mode-S code A7DC99?
A7DC99 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N6053F.
Where is Mode-S A7DC99 registered?
Mode-S code A7DC99 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 A7DC99 broadcasting right now?
Yes. Mode-S A7DC99 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7DC99, octal 51756231, decimal 11,000,985.
What flights does A7DC99 operate?
Mode-S A7DC99 has broadcast 1 distinct callsign, including N6053F.