Apparatus

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sensors Mode-S transponder

A7F642

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N612AX · MCDONNELL DOUGLAS DC-10 · operated by BC AIRCRAFT LEASING LLC

Hex
A7F642
Octal
51773102
Decimal
11,007,554
Country
US
Tail
N612AX
Type
DC10
No current signal · last broadcast 3h ago
Flights observed
71
Distinct callsigns
1
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A7F642.

Country allocation

The ICAO 24-bit address A7F642 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
TKR910 - 71 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-04 TKR910 - Jul 4, 23:40 UTCJul 5, 00:30 UTC50m
2026-07-04 TKR910 - Jul 4, 22:00 UTCJul 4, 22:55 UTC55m
2026-07-04 TKR910 - Jul 4, 20:25 UTCJul 4, 21:20 UTC55m
2026-07-04 TKR910 AZA → AZA Jul 4, 18:50 UTCJul 4, 19:45 UTC55m
2026-07-03 TKR910 - Jul 3, 19:55 UTCJul 3, 20:45 UTC50m
2026-07-03 TKR910 AZA → AZA Jul 3, 18:15 UTCJul 3, 19:10 UTC55m
2026-07-03 TKR910 AZA → AZA Jul 3, 01:45 UTCJul 3, 02:35 UTC50m
2026-07-02 TKR910 - Jul 2, 20:45 UTCJul 2, 21:05 UTC20m
2026-07-02 TKR910 - Jul 2, 19:20 UTCJul 2, 20:10 UTC50m
2026-06-30 TKR910 - Jun 30, 19:50 UTCJun 30, 20:30 UTC40m
2026-06-30 TKR910 - Jun 30, 16:55 UTCJun 30, 19:00 UTC2h 5m
2026-06-29 TKR910 - Jun 29, 20:04 UTCJun 29, 21:05 UTC1h 0m
2026-06-29 TKR910 - Jun 29, 18:30 UTCJun 29, 19:24 UTC55m
2026-06-29 TKR910 - Jun 29, 02:25 UTCJun 29, 03:29 UTC1h 5m
2026-06-29 TKR910 - Jun 29, 01:44 UTCJun 29, 01:55 UTC10m
2026-06-28 TKR910 SBD → AZA Jun 28, 18:10 UTCJun 28, 19:49 UTC1h 40m
2026-06-27 TKR910 SBD → SBD Jun 27, 22:49 UTCJun 27, 23:10 UTC20m
2026-06-24 TKR910 - Jun 24, 01:30 UTCJun 24, 03:04 UTC1h 35m
2026-06-23 TKR910 - Jun 23, 20:44 UTCJun 23, 21:14 UTC30m
2026-06-23 TKR910 - Jun 23, 19:34 UTCJun 23, 20:04 UTC30m
2026-06-23 TKR910 - Jun 23, 18:14 UTCJun 23, 18:45 UTC30m
2026-06-23 TKR910 - Jun 23, 17:04 UTCJun 23, 17:30 UTC25m
2026-06-23 TKR910 - Jun 23, 02:09 UTCJun 23, 03:15 UTC1h 5m
2026-06-22 TKR910 - Jun 22, 20:14 UTCJun 22, 22:05 UTC1h 50m
2026-06-21 TKR910 SBD → SBD Jun 21, 23:34 UTCJun 22, 01:25 UTC1h 50m
2026-06-21 TKR910 SBD → SBD Jun 21, 21:14 UTCJun 21, 23:00 UTC1h 45m
2026-06-21 TKR910 SBD → SBD Jun 21, 18:54 UTCJun 21, 20:45 UTC1h 50m
2026-06-20 TKR910 SBD → SBD Jun 20, 22:00 UTCJun 21, 00:40 UTC2h 40m
2026-06-19 TKR910 SBD → SBD Jun 19, 21:44 UTCJun 19, 23:44 UTC2h 0m
2026-06-19 TKR910 SBD → SBD Jun 19, 18:34 UTCJun 19, 20:14 UTC1h 40m
2026-06-19 TKR910 - Jun 19, 02:35 UTCJun 19, 03:29 UTC55m
2026-06-19 TKR910 - Jun 19, 01:24 UTCJun 19, 01:59 UTC35m
2026-06-19 TKR910 - Jun 19, 00:14 UTCJun 19, 00:55 UTC40m
2026-06-18 TKR910 - Jun 18, 23:05 UTCJun 18, 23:40 UTC35m
2026-06-18 TKR910 SMX → SMX Jun 18, 21:35 UTCJun 18, 22:30 UTC55m
2026-06-18 TKR910 SBD → SMX Jun 18, 20:00 UTCJun 18, 20:55 UTC55m
2026-06-17 TKR910 - Jun 17, 02:55 UTCJun 17, 03:40 UTC45m
2026-06-17 TKR910 - Jun 17, 01:45 UTCJun 17, 02:25 UTC40m
2026-06-16 TKR910 SBD → SBD Jun 16, 23:05 UTCJun 17, 01:05 UTC2h 0m
2026-06-16 TKR910 SBD → SBD Jun 16, 01:50 UTCJun 16, 02:29 UTC40m
2026-06-16 TKR910 - Jun 16, 00:55 UTCJun 16, 01:15 UTC20m
2026-06-15 TKR910 SBD → SBD Jun 15, 23:54 UTCJun 16, 00:10 UTC15m
2026-06-14 TKR910 COS → SBD Jun 14, 23:59 UTCJun 15, 01:55 UTC1h 55m
2026-06-12 TKR910 - Jun 12, 18:35 UTCJun 12, 19:10 UTC35m
2026-06-12 TKR910 - Jun 12, 17:25 UTCJun 12, 17:55 UTC30m
2026-06-11 TKR910 - Jun 11, 23:20 UTCJun 12, 00:55 UTC1h 36m
2026-06-11 TKR910 - Jun 11, 21:55 UTCJun 11, 22:35 UTC40m
2026-06-11 TKR910 - Jun 11, 20:55 UTCJun 11, 21:25 UTC30m
2026-06-11 TKR910 - Jun 11, 19:35 UTCJun 11, 20:05 UTC30m
2026-06-11 TKR910 - Jun 11, 18:25 UTCJun 11, 18:55 UTC30m

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 N612AX page for operator, model, and routing details .

Mode-S A7F642 frequently asked

What is Mode-S code A7F642?
A7F642 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N612AX.
Where is Mode-S A7F642 registered?
Mode-S code A7F642 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 A7F642 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7F642, octal 51773102, decimal 11,007,554.
What flights does A7F642 operate?
Mode-S A7F642 has broadcast 1 distinct callsign, including TKR910.