Apparatus

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sensors Mode-S transponder

A7DB91

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N605TX · CESSNA 560XL Citation XLS · operated by PERFECT AGREEMENTS LEASING INC

Hex
A7DB91
Octal
51755621
Decimal
11,000,721
Country
US
Tail
N605TX
Type
C56X
No current signal · last broadcast 9h ago
Flights observed
155
Distinct callsigns
1
Country
US
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S A7DB91.

Country allocation

The ICAO 24-bit address A7DB91 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
PFT605 - 155 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 PFT605 BUR → SNA Jul 22, 21:45 UTCJul 22, 22:05 UTC20m
2026-07-22 PFT605 - Jul 22, 19:05 UTCJul 22, 20:55 UTC1h 50m
2026-07-22 PFT605 - Jul 22, 16:15 UTCJul 22, 16:45 UTC30m
2026-07-20 PFT605 - Jul 20, 22:10 UTCJul 21, 00:25 UTC2h 14m
2026-07-20 PFT605 - Jul 20, 19:35 UTCJul 20, 20:50 UTC1h 15m
2026-07-20 PFT605 - Jul 20, 17:00 UTCJul 20, 18:40 UTC1h 40m
2026-07-20 PFT605 - Jul 20, 15:00 UTCJul 20, 16:00 UTC1h 0m
2026-07-19 PFT605 - Jul 19, 16:20 UTCJul 19, 21:25 UTC5h 5m
2026-07-18 PFT605 - Jul 18, 17:55 UTCJul 18, 18:50 UTC55m
2026-07-17 PFT605 - Jul 17, 02:34 UTCJul 17, 04:04 UTC1h 30m
2026-07-16 PFT605 - Jul 16, 23:49 UTCJul 17, 01:29 UTC1h 40m
2026-07-16 PFT605 - Jul 16, 20:35 UTCJul 16, 21:50 UTC1h 15m
2026-07-16 PFT605 - Jul 16, 19:20 UTCJul 16, 19:40 UTC20m
2026-07-16 PFT605 - Jul 16, 17:35 UTCJul 16, 18:34 UTC1h 0m
2026-07-16 PFT605 - Jul 16, 16:00 UTCJul 16, 16:19 UTC20m
2026-07-13 PFT605 - Jul 13, 21:20 UTCJul 13, 22:25 UTC1h 5m
2026-07-13 PFT605 - Jul 13, 19:20 UTCJul 13, 20:40 UTC1h 20m
2026-07-13 PFT605 - Jul 13, 17:20 UTCJul 13, 17:55 UTC35m
2026-07-10 PFT605 - Jul 10, 23:30 UTCJul 10, 23:50 UTC20m
2026-07-03 PFT605 - Jul 3, 17:25 UTCJul 3, 17:50 UTC25m
2026-07-01 PFT605 - Jul 1, 19:50 UTCJul 1, 20:15 UTC25m
2026-06-29 PFT605 - Jun 29, 23:05 UTCJun 30, 00:04 UTC1h 0m
2026-06-29 PFT605 - Jun 29, 19:09 UTCJun 29, 20:54 UTC1h 45m
2026-06-29 PFT605 - Jun 29, 16:00 UTCJun 29, 18:10 UTC2h 10m
2026-06-29 PFT605 - Jun 29, 02:20 UTCJun 29, 03:14 UTC55m
2026-06-29 PFT605 - Jun 29, 01:00 UTCJun 29, 01:50 UTC50m
2026-06-28 PFT605 - Jun 28, 22:49 UTCJun 28, 23:54 UTC1h 5m
2026-06-28 PFT605 - Jun 28, 20:29 UTCJun 28, 21:10 UTC40m
2026-06-27 PFT605 - Jun 27, 17:09 UTCJun 27, 18:54 UTC1h 45m
2026-06-27 PFT605 - Jun 27, 15:34 UTCJun 27, 16:04 UTC30m
2026-06-27 PFT605 - Jun 27, 02:04 UTCJun 27, 02:45 UTC40m
2026-06-27 PFT605 - Jun 27, 00:55 UTCJun 27, 01:35 UTC40m
2026-06-23 PFT605 - Jun 23, 18:10 UTCJun 23, 19:15 UTC1h 5m
2026-06-22 PFT605 - Jun 22, 21:54 UTCJun 22, 22:24 UTC30m
2026-06-22 PFT605 - Jun 22, 19:00 UTCJun 22, 20:24 UTC1h 25m
2026-06-22 PFT605 - Jun 22, 17:25 UTCJun 22, 18:24 UTC1h 0m
2026-06-20 PFT605 CLD → SNA Jun 20, 03:29 UTCJun 20, 03:49 UTC20m
2026-06-20 PFT605 SCF → CLD Jun 20, 01:39 UTCJun 20, 02:40 UTC1h 0m
2026-06-19 PFT605 - Jun 19, 23:49 UTCJun 20, 00:59 UTC1h 10m
2026-06-18 PFT605 - Jun 18, 16:10 UTCJun 18, 23:40 UTC7h 30m
2026-06-17 PFT605 - Jun 17, 22:35 UTCJun 17, 22:55 UTC20m
2026-06-17 PFT605 - Jun 17, 20:25 UTCJun 17, 21:20 UTC55m
2026-06-17 PFT605 - Jun 17, 18:25 UTCJun 17, 18:40 UTC15m
2026-06-17 PFT605 - Jun 17, 00:00 UTCJun 17, 00:40 UTC40m
2026-06-16 PFT605 - Jun 16, 22:25 UTCJun 16, 22:55 UTC30m
2026-06-16 PFT605 - Jun 16, 00:45 UTCJun 16, 02:50 UTC2h 5m
2026-06-15 PFT605 APA → PDX Jun 15, 21:40 UTCJun 16, 00:10 UTC2h 30m
2026-06-15 PFT605 BUR → APA Jun 15, 02:39 UTCJun 15, 04:40 UTC2h 0m
2026-06-15 PFT605 - Jun 15, 00:40 UTCJun 15, 00:55 UTC15m
2026-06-13 PFT605 - Jun 13, 03:40 UTCJun 13, 03:55 UTC15m

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 N605TX page for operator, model, and routing details .

Mode-S A7DB91 frequently asked

What is Mode-S code A7DB91?
A7DB91 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N605TX.
Where is Mode-S A7DB91 registered?
Mode-S code A7DB91 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 A7DB91 broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7DB91, octal 51755621, decimal 11,000,721.
What flights does A7DB91 operate?
Mode-S A7DB91 has broadcast 1 distinct callsign, including PFT605.