Apparatus

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sensors Mode-S transponder

A7D27A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N603AX · MCDONNELL DOUGLAS DC-10 · operated by BC AIRCRAFT LEASING LLC

Hex
A7D27A
Octal
51751172
Decimal
10,998,394
Country
US
Tail
N603AX
Type
DC10
No current signal · last broadcast 1h ago
Flights observed
48
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A7D27A.

Country allocation

The ICAO 24-bit address A7D27A 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
TKR914 - 48 2026-07-05

Recent flights last 48

DateFlightRouteTakeoffLandingDuration
2026-07-05 TKR914 - Jul 5, 00:05 UTCJul 5, 00:20 UTC15m
2026-07-04 TKR914 - Jul 4, 22:30 UTCJul 4, 23:15 UTC45m
2026-07-04 TKR914 - Jul 4, 20:50 UTCJul 4, 21:40 UTC50m
2026-07-04 TKR914 AZA → AZA Jul 4, 19:20 UTCJul 4, 20:15 UTC55m
2026-07-02 TKR914 - Jul 2, 21:50 UTCJul 2, 22:45 UTC55m
2026-07-02 TKR914 AZA → AZA Jul 2, 20:10 UTCJul 2, 21:00 UTC50m
2026-07-02 TKR914 AZA → AZA Jul 2, 18:25 UTCJul 2, 19:20 UTC55m
2026-07-01 TKR914 AZA → AZA Jul 1, 18:30 UTCJul 1, 20:20 UTC1h 50m
2026-06-30 TKR914 - Jun 30, 22:30 UTCJun 30, 23:20 UTC50m
2026-06-30 TKR914 - Jun 30, 21:15 UTCJun 30, 22:00 UTC45m
2026-06-29 TKR914 COS → AZA Jun 29, 20:30 UTCJun 29, 22:24 UTC1h 55m
2026-06-28 TKR914 - Jun 28, 17:25 UTCJun 28, 19:09 UTC1h 45m
2026-06-27 TKR914 - Jun 27, 18:54 UTCJun 27, 19:24 UTC30m
2026-06-27 TKR914 AZA → AZA Jun 27, 17:49 UTCJun 27, 18:15 UTC25m
2026-06-24 TKR914 AZA → AZA Jun 24, 22:39 UTCJun 24, 23:14 UTC35m
2026-06-23 TKR914 - Jun 23, 21:14 UTCJun 23, 23:14 UTC2h 0m
2026-06-23 TKR914 AZA → AZA Jun 23, 18:25 UTCJun 23, 20:29 UTC2h 5m
2026-06-22 TKR914 AZA → AZA Jun 22, 21:30 UTCJun 22, 23:24 UTC1h 55m
2026-06-22 TKR914 AZA → AZA Jun 22, 18:44 UTCJun 22, 20:34 UTC1h 50m
2026-06-22 TKR914 AZA → AZA Jun 22, 01:44 UTCJun 22, 02:34 UTC50m
2026-06-22 TKR914 - Jun 22, 00:29 UTCJun 22, 00:44 UTC15m
2026-06-21 TKR914 - Jun 21, 23:40 UTCJun 21, 23:55 UTC15m
2026-06-21 TKR914 ABQ → ABQ Jun 21, 20:50 UTCJun 21, 21:24 UTC35m
2026-06-21 TKR914 ABQ → ABQ Jun 21, 01:10 UTCJun 21, 01:39 UTC30m
2026-06-20 TKR914 ABQ → ABQ Jun 20, 23:55 UTCJun 21, 00:25 UTC30m
2026-06-20 TKR914 ABQ → ABQ Jun 20, 22:30 UTCJun 20, 23:19 UTC50m
2026-06-19 TKR914 - Jun 19, 01:24 UTCJun 19, 02:09 UTC45m
2026-06-18 TKR914 SBD → AZA Jun 18, 22:50 UTCJun 19, 00:45 UTC1h 54m
2026-06-18 TKR914 - Jun 18, 20:35 UTCJun 18, 22:10 UTC1h 35m
2026-06-18 TKR914 AZA → SBD Jun 18, 17:55 UTCJun 18, 19:40 UTC1h 45m
2026-06-18 TKR914 - Jun 18, 00:35 UTCJun 18, 02:35 UTC2h 0m
2026-06-17 TKR914 - Jun 17, 22:25 UTCJun 17, 23:45 UTC1h 20m
2026-06-16 TKR914 - Jun 16, 23:15 UTCJun 16, 23:50 UTC35m
2026-06-16 TKR914 - Jun 16, 21:45 UTCJun 16, 22:25 UTC40m
2026-06-15 TKR914 - Jun 15, 23:54 UTCJun 16, 02:15 UTC2h 20m
2026-06-12 TKR914 COS → ABQ Jun 12, 00:10 UTCJun 12, 02:25 UTC2h 16m
2026-06-11 TKR914 - Jun 11, 22:25 UTCJun 11, 23:10 UTC45m
2026-06-11 TKR914 - Jun 11, 20:45 UTCJun 11, 21:55 UTC1h 10m
2026-06-11 TKR914 COS → ABQ Jun 11, 01:20 UTCJun 11, 03:00 UTC1h 40m
2026-06-11 TKR914 - Jun 11, 00:00 UTCJun 11, 00:35 UTC35m
2026-06-10 TKR914 - Jun 10, 22:50 UTCJun 10, 23:25 UTC35m
2026-06-10 TKR914 - Jun 10, 21:15 UTCJun 10, 21:55 UTC40m
2026-06-10 TKR914 - Jun 10, 19:35 UTCJun 10, 20:30 UTC55m
2026-06-10 TKR914 - Jun 10, 18:35 UTCJun 10, 18:55 UTC20m
2026-05-24 TKR914 - May 24, 00:10 UTCMay 24, 01:05 UTC55m
2026-05-23 TKR914 MCC → MCC May 23, 22:15 UTCMay 23, 23:05 UTC50m
2026-05-23 TKR914 - May 23, 14:20 UTCMay 23, 18:35 UTC4h 16m
2026-05-21 TKR914 - May 21, 21:00 UTCMay 21, 22:05 UTC1h 5m

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 N603AX page for operator, model, and routing details .

Mode-S A7D27A frequently asked

What is Mode-S code A7D27A?
A7D27A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N603AX.
Where is Mode-S A7D27A registered?
Mode-S code A7D27A 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 A7D27A broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7D27A, octal 51751172, decimal 10,998,394.
What flights does A7D27A operate?
Mode-S A7D27A has broadcast 1 distinct callsign, including TKR914.