Apparatus

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sensors Mode-S transponder

A5170F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N427QS · EMBRAER EMB-505 Phenom 300 · operated by NETJETS SALES INC, AIRHEAD CONSORTIUM LLC, CSACK ACQUISITION COMPANY LLC, DAIRY FARMERS OF AMERICA INC, WARD JAMES

Hex
A5170F
Octal
51213417
Decimal
10,819,343
Country
US
Tail
N427QS
Type
E55P
No current signal · last broadcast 3h ago
Flights observed
259
Distinct callsigns
2
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A5170F.

Country allocation

The ICAO 24-bit address A5170F 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 2 distinct

Callsign Airline Flights Last seen
EJA427 - 254 2026-07-14
N427QS - 5 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 EJA427 - Jul 14, 17:10 UTCJul 14, 18:05 UTC55m
2026-07-13 EJA427 - Jul 13, 21:25 UTCJul 13, 23:55 UTC2h 30m
2026-07-13 EJA427 - Jul 13, 20:15 UTCJul 13, 20:35 UTC20m
2026-07-13 EJA427 BFI → BLI Jul 13, 17:35 UTCJul 13, 18:00 UTC25m
2026-07-11 EJA427 - Jul 11, 19:35 UTCJul 11, 21:05 UTC1h 30m
2026-07-11 EJA427 - Jul 11, 17:35 UTCJul 11, 18:00 UTC25m
2026-07-11 EJA427 - Jul 11, 15:45 UTCJul 11, 16:05 UTC20m
2026-07-11 EJA427 - Jul 11, 00:05 UTCJul 11, 02:05 UTC2h 0m
2026-07-10 EJA427 - Jul 10, 20:45 UTCJul 10, 22:50 UTC2h 5m
2026-07-10 EJA427 - Jul 10, 17:55 UTCJul 10, 18:35 UTC40m
2026-07-10 EJA427 - Jul 10, 15:05 UTCJul 10, 16:50 UTC1h 45m
2026-07-09 EJA427 - Jul 9, 23:30 UTCJul 10, 01:25 UTC1h 55m
2026-07-09 EJA427 - Jul 9, 21:55 UTCJul 9, 22:35 UTC40m
2026-07-09 EJA427 - Jul 9, 15:30 UTCJul 9, 15:55 UTC25m
2026-07-08 EJA427 OMA → STL Jul 8, 22:20 UTCJul 8, 22:50 UTC30m
2026-07-08 EJA427 OMA → STL Jul 8, 18:35 UTCJul 8, 21:20 UTC2h 45m
2026-07-08 N427QS - Jul 8, 17:15 UTCJul 8, 17:35 UTC20m
2026-07-08 N427QS - Jul 8, 14:55 UTCJul 8, 15:15 UTC20m
2026-07-07 EJA427 OMA → STL Jul 7, 23:45 UTCJul 8, 00:05 UTC20m
2026-07-07 EJA427 OMA → STL Jul 7, 20:30 UTCJul 7, 22:05 UTC1h 35m
2026-07-07 EJA427 OMA → STL Jul 7, 17:55 UTCJul 7, 18:45 UTC50m
2026-07-07 EJA427 OMA → STL Jul 7, 16:05 UTCJul 7, 16:55 UTC50m
2026-07-07 EJA427 OMA → STL Jul 7, 13:35 UTCJul 7, 14:50 UTC1h 15m
2026-07-07 EJA427 OMA → STL Jul 7, 09:30 UTCJul 7, 10:45 UTC1h 15m
2026-07-06 EJA427 OMA → STL Jul 6, 18:20 UTCJul 6, 19:35 UTC1h 15m
2026-07-06 EJA427 OMA → STL Jul 6, 15:25 UTCJul 6, 16:55 UTC1h 30m
2026-07-06 EJA427 OMA → STL Jul 6, 13:30 UTCJul 6, 13:50 UTC20m
2026-07-06 EJA427 OMA → STL Jul 6, 10:30 UTCJul 6, 12:20 UTC1h 50m
2026-07-05 EJA427 OMA → STL Jul 5, 19:10 UTCJul 5, 19:20 UTC10m
2026-07-05 EJA427 OMA → STL Jul 5, 16:05 UTCJul 5, 16:55 UTC50m
2026-07-04 EJA427 OMA → STL Jul 4, 18:50 UTCJul 4, 19:20 UTC30m
2026-07-04 EJA427 OMA → STL Jul 4, 13:10 UTCJul 4, 15:35 UTC2h 25m
2026-07-03 EJA427 OMA → STL Jul 3, 17:10 UTCJul 3, 17:55 UTC45m
2026-07-03 EJA427 OMA → STL Jul 3, 14:50 UTCJul 3, 15:35 UTC45m
2026-07-02 N427QS - Jul 2, 16:00 UTCJul 2, 21:40 UTC5h 40m
2026-07-02 EJA427 OMA → STL Jul 2, 02:10 UTCJul 2, 03:15 UTC1h 5m
2026-07-02 EJA427 OMA → STL Jul 2, 00:20 UTCJul 2, 01:00 UTC40m
2026-07-01 EJA427 OMA → STL Jul 1, 22:55 UTCJul 1, 23:10 UTC15m
2026-07-01 N427QS - Jul 1, 17:05 UTCJul 1, 17:40 UTC35m
2026-07-01 N427QS - Jul 1, 14:25 UTCJul 1, 15:45 UTC1h 20m
2026-07-01 EJA427 OMA → STL Jul 1, 12:00 UTCJul 1, 12:50 UTC50m
2026-06-30 EJA427 OMA → STL Jun 30, 20:35 UTCJun 30, 21:30 UTC55m
2026-06-30 EJA427 OMA → STL Jun 30, 17:40 UTCJun 30, 18:10 UTC30m
2026-06-30 EJA427 OMA → STL Jun 30, 16:30 UTCJun 30, 17:05 UTC35m
2026-06-30 EJA427 OMA → STL Jun 30, 14:25 UTCJun 30, 15:25 UTC1h 0m
2026-06-30 EJA427 OMA → STL Jun 30, 12:50 UTCJun 30, 13:50 UTC1h 0m
2026-06-29 EJA427 OMA → STL Jun 29, 19:29 UTCJun 29, 20:15 UTC45m
2026-06-29 EJA427 OMA → STL Jun 29, 14:29 UTCJun 29, 17:10 UTC2h 40m
2026-06-29 EJA427 OMA → STL Jun 29, 11:25 UTCJun 29, 13:04 UTC1h 40m
2026-06-28 EJA427 OMA → STL Jun 28, 22:20 UTCJun 28, 22:45 UTC25m

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 N427QS page for operator, model, and routing details .

Mode-S A5170F frequently asked

What is Mode-S code A5170F?
A5170F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N427QS.
Where is Mode-S A5170F registered?
Mode-S code A5170F 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 A5170F 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 A5170F, octal 51213417, decimal 10,819,343.
What flights does A5170F operate?
Mode-S A5170F has broadcast 2 distinct callsigns, including EJA427, N427QS.