Apparatus

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sensors Mode-S transponder

A9E6C4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N737TQ · CESSNA 172 Skyhawk · operated by N737TQ AVIATION LLC

Hex
A9E6C4
Octal
52363304
Decimal
11,134,660
Country
US
Tail
N737TQ
Type
C172
No current signal · last broadcast 2h ago
Flights observed
345
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A9E6C4.

Country allocation

The ICAO 24-bit address A9E6C4 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
N737TQ - 345 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N737TQ RBK → RBK Jul 25, 01:35 UTCJul 25, 02:15 UTC40m
2026-07-24 N737TQ RBK → RBK Jul 24, 15:40 UTCJul 24, 16:10 UTC30m
2026-07-24 N737TQ - Jul 24, 13:45 UTCJul 24, 14:30 UTC45m
2026-07-24 N737TQ RBK → RBK Jul 24, 01:45 UTCJul 24, 02:40 UTC55m
2026-07-23 N737TQ RBK → RBK Jul 23, 23:45 UTCJul 24, 00:15 UTC30m
2026-07-23 N737TQ AVX → RBK Jul 23, 21:35 UTCJul 23, 22:25 UTC50m
2026-07-23 N737TQ - Jul 23, 19:35 UTCJul 23, 20:20 UTC45m
2026-07-23 N737TQ - Jul 23, 05:55 UTCJul 23, 06:45 UTC50m
2026-07-23 N737TQ RBK → LGB Jul 23, 04:55 UTCJul 23, 05:45 UTC50m
2026-07-23 N737TQ CLD → RBK Jul 23, 02:25 UTCJul 23, 02:50 UTC25m
2026-07-23 N737TQ CLD → CLD Jul 23, 01:15 UTCJul 23, 02:10 UTC55m
2026-07-23 N737TQ - Jul 23, 00:00 UTCJul 23, 00:15 UTC15m
2026-07-22 N737TQ - Jul 22, 20:45 UTCJul 22, 22:05 UTC1h 20m
2026-07-22 N737TQ - Jul 22, 16:40 UTCJul 22, 17:45 UTC1h 5m
2026-07-22 N737TQ RBK → RBK Jul 22, 01:45 UTCJul 22, 03:00 UTC1h 15m
2026-07-21 N737TQ - Jul 21, 19:25 UTCJul 21, 20:40 UTC1h 15m
2026-07-21 N737TQ RBK → HMT Jul 21, 18:45 UTCJul 21, 19:10 UTC25m
2026-07-21 N737TQ - Jul 21, 17:15 UTCJul 21, 17:30 UTC15m
2026-07-21 N737TQ RBK → HMT Jul 21, 16:25 UTCJul 21, 17:10 UTC45m
2026-07-21 N737TQ RBK → RBK Jul 21, 14:30 UTCJul 21, 15:05 UTC35m
2026-07-21 N737TQ RBK → RBK Jul 21, 01:20 UTCJul 21, 01:50 UTC30m
2026-07-20 N737TQ RBK → RBK Jul 20, 22:15 UTCJul 20, 23:45 UTC1h 30m
2026-07-20 N737TQ - Jul 20, 19:00 UTCJul 20, 19:15 UTC15m
2026-07-20 N737TQ RBK → HMT Jul 20, 18:10 UTCJul 20, 18:55 UTC45m
2026-07-20 N737TQ RBK → RBK Jul 20, 15:35 UTCJul 20, 16:45 UTC1h 10m
2026-07-19 N737TQ - Jul 19, 22:20 UTCJul 20, 00:50 UTC2h 30m
2026-07-19 N737TQ - Jul 19, 19:35 UTCJul 19, 20:30 UTC55m
2026-07-19 N737TQ RBK → RBK Jul 19, 15:20 UTCJul 19, 16:40 UTC1h 20m
2026-07-18 N737TQ - Jul 18, 14:30 UTCJul 18, 16:00 UTC1h 30m
2026-07-18 N737TQ RBK → RBK Jul 18, 02:05 UTCJul 18, 04:05 UTC2h 1m
2026-07-15 N737TQ - Jul 15, 16:55 UTCJul 15, 17:40 UTC45m
2026-07-15 N737TQ HMT → RBK Jul 15, 15:20 UTCJul 15, 16:00 UTC40m
2026-07-15 N737TQ RBK → HMT Jul 15, 14:55 UTCJul 15, 15:15 UTC20m
2026-07-14 N737TQ - Jul 14, 15:30 UTCJul 14, 16:20 UTC50m
2026-07-14 N737TQ - Jul 14, 13:45 UTCJul 14, 14:20 UTC35m
2026-07-14 N737TQ RBK → RBK Jul 14, 01:30 UTCJul 14, 02:35 UTC1h 5m
2026-07-13 N737TQ RBK → RBK Jul 13, 23:40 UTCJul 14, 00:30 UTC50m
2026-07-13 N737TQ HMT → RBK Jul 13, 18:20 UTCJul 13, 19:15 UTC55m
2026-07-13 N737TQ RBK → HMT Jul 13, 17:35 UTCJul 13, 18:05 UTC30m
2026-07-13 N737TQ RBK → RBK Jul 13, 15:45 UTCJul 13, 16:40 UTC55m
2026-07-13 N737TQ - Jul 13, 13:50 UTCJul 13, 14:35 UTC45m
2026-07-12 N737TQ RBK → RBK Jul 12, 18:05 UTCJul 12, 18:55 UTC50m
2026-07-12 N737TQ - Jul 12, 15:35 UTCJul 12, 17:01 UTC1h 25m
2026-07-11 N737TQ RBK → RBK Jul 11, 21:30 UTCJul 11, 22:10 UTC40m
2026-07-11 N737TQ - Jul 11, 19:30 UTCJul 11, 20:25 UTC55m
2026-07-11 N737TQ HMT → HMT Jul 11, 19:15 UTCJul 11, 19:25 UTC10m
2026-07-11 N737TQ - Jul 11, 18:45 UTCJul 11, 19:10 UTC25m
2026-07-11 N737TQ - Jul 11, 16:45 UTCJul 11, 17:25 UTC40m
2026-07-11 N737TQ RBK → RBK Jul 11, 14:35 UTCJul 11, 15:20 UTC45m
2026-07-10 N737TQ RBK → RBK Jul 10, 02:40 UTCJul 10, 04:05 UTC1h 25m

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 N737TQ page for operator, model, and routing details .

Mode-S A9E6C4 frequently asked

What is Mode-S code A9E6C4?
A9E6C4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N737TQ.
Where is Mode-S A9E6C4 registered?
Mode-S code A9E6C4 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 A9E6C4 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9E6C4, octal 52363304, decimal 11,134,660.
What flights does A9E6C4 operate?
Mode-S A9E6C4 has broadcast 1 distinct callsign, including N737TQ.