Apparatus

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sensors Mode-S transponder

A32F17

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N304KH · BOEING 737-300 · operated by NAS AIRCRAFT LEASING CO LLC

Hex
A32F17
Octal
50627427
Decimal
10,694,423
Country
US
Tail
N304KH
Type
B733
No current signal · last broadcast 4d ago
Flights observed
268
Distinct callsigns
20
Country
US
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S A32F17.

Country allocation

The ICAO 24-bit address A32F17 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 20 distinct

Callsign Airline Flights Last seen
NAC723 - 24 2026-07-08
NAC722 - 24 2026-07-08
NAC721 - 22 2026-06-27
NAC720 - 21 2026-06-25
NAC751 - 20 2026-06-30
NAC750 - 15 2026-06-30
NAC732 - 10 2026-06-27
NAC1783 - 10 2026-07-03
NAC1782 - 10 2026-07-03
NAC772 - 9 2026-06-25
NAC754 - 9 2026-07-08
NAC733 Northern Air Cargo 9 2026-06-13
NAC765 - 8 2026-07-09
NAC760 - 7 2026-07-02
NAC731 Northern Air Cargo 7 2026-06-28
NAC755 - 6 2026-07-08
NAC730 Northern Air Cargo 6 2026-06-28
NAC1781 - 6 2026-07-04
NAC1780 - 6 2026-07-03
NAC773 - 5 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 NAC765 - Jul 9, 14:35 UTCJul 9, 20:30 UTC5h 55m
2026-07-08 NAC755 - Jul 8, 20:10 UTCJul 8, 21:10 UTC1h 0m
2026-07-08 NAC754 - Jul 8, 18:20 UTCJul 8, 19:05 UTC45m
2026-07-08 NAC723 OTZ → ANC Jul 8, 15:50 UTCJul 8, 17:10 UTC1h 20m
2026-07-08 NAC722 - Jul 8, 13:50 UTCJul 8, 15:05 UTC1h 15m
2026-07-07 NAC727 - Jul 7, 19:25 UTCJul 7, 20:10 UTC45m
2026-07-07 NAC726 - Jul 7, 15:55 UTCJul 7, 16:45 UTC50m
2026-07-04 NAC2755 - Jul 4, 04:15 UTCJul 4, 05:05 UTC50m
2026-07-04 NAC2754 - Jul 4, 02:25 UTCJul 4, 03:10 UTC45m
2026-07-04 NAC1781 - Jul 4, 00:10 UTCJul 4, 01:25 UTC1h 15m
2026-07-03 NAC1780 ANC → RDB Jul 3, 21:55 UTCJul 3, 23:20 UTC1h 25m
2026-07-03 NAC1783 - Jul 3, 17:25 UTCJul 3, 18:45 UTC1h 20m
2026-07-03 NAC1782 - Jul 3, 15:10 UTCJul 3, 16:35 UTC1h 25m
2026-07-02 NAC760 - Jul 2, 18:40 UTCJul 3, 01:05 UTC6h 25m
2026-07-01 NAC768 - Jul 1, 14:50 UTCJul 1, 18:40 UTC3h 50m
2026-06-30 NAC751 - Jun 30, 20:40 UTCJun 30, 21:15 UTC35m
2026-06-30 NAC750 - Jun 30, 18:35 UTCJun 30, 19:15 UTC40m
2026-06-30 NAC723 - Jun 30, 15:55 UTCJun 30, 17:15 UTC1h 20m
2026-06-30 NAC722 - Jun 30, 13:55 UTCJun 30, 15:15 UTC1h 20m
2026-06-29 NAC2775 - Jun 29, 20:44 UTCJun 29, 21:44 UTC1h 0m
2026-06-29 NAC2774 - Jun 29, 18:49 UTCJun 29, 19:39 UTC50m
2026-06-29 NAC723 - Jun 29, 16:10 UTCJun 29, 17:30 UTC1h 20m
2026-06-29 NAC722 - Jun 29, 13:59 UTCJun 29, 15:14 UTC1h 15m
2026-06-28 NAC731 BET → ANC Jun 28, 23:50 UTCJun 29, 00:34 UTC45m
2026-06-28 NAC730 ANC → BET Jun 28, 21:55 UTCJun 28, 22:45 UTC50m
2026-06-27 NAC1781 - Jun 27, 21:55 UTCJun 27, 23:19 UTC1h 25m
2026-06-27 NAC1780 - Jun 27, 19:29 UTCJun 27, 20:49 UTC1h 20m
2026-06-27 NAC721 - Jun 27, 14:54 UTCJun 27, 18:29 UTC3h 35m
2026-06-27 733 - Jun 27, 03:55 UTCJun 27, 04:54 UTC1h 0m
2026-06-27 NAC732 - Jun 27, 02:14 UTCJun 27, 02:59 UTC45m
2026-06-27 NAC731 BET → ANC Jun 27, 00:14 UTCJun 27, 01:15 UTC1h 0m
2026-06-26 NAC730 ANC → BET Jun 26, 22:29 UTCJun 26, 23:15 UTC45m
2026-06-26 NAC751 - Jun 26, 20:55 UTCJun 26, 21:45 UTC50m
2026-06-26 NAC750 - Jun 26, 18:34 UTCJun 26, 19:09 UTC35m
2026-06-26 NAC723 - Jun 26, 15:45 UTCJun 26, 17:04 UTC1h 20m
2026-06-26 NAC722 ANC → OTZ Jun 26, 13:40 UTCJun 26, 14:55 UTC1h 15m
2026-06-25 NAC773 - Jun 25, 20:59 UTCJun 25, 21:44 UTC45m
2026-06-25 NAC772 ANC → AKN Jun 25, 19:24 UTCJun 25, 20:09 UTC45m
2026-06-25 NAC721 - Jun 25, 16:09 UTCJun 25, 17:20 UTC1h 10m
2026-06-25 NAC720 - Jun 25, 13:50 UTCJun 25, 14:50 UTC1h 0m
2026-06-24 NAC769 - Jun 24, 14:50 UTCJun 24, 18:55 UTC4h 5m
2026-06-23 NAC751 - Jun 23, 20:15 UTCJun 23, 20:59 UTC45m
2026-06-23 NAC750 - Jun 23, 18:20 UTCJun 23, 18:55 UTC35m
2026-06-23 NAC723 - Jun 23, 15:44 UTCJun 23, 16:59 UTC1h 15m
2026-06-23 NAC722 - Jun 23, 13:50 UTCJun 23, 15:04 UTC1h 15m
2026-06-22 NAC765 - Jun 22, 14:24 UTCJun 22, 20:39 UTC6h 15m
2026-06-19 NAC751 - Jun 19, 20:40 UTCJun 19, 21:24 UTC45m
2026-06-19 NAC750 - Jun 19, 18:44 UTCJun 19, 19:19 UTC35m
2026-06-19 NAC723 - Jun 19, 15:59 UTCJun 19, 17:19 UTC1h 20m
2026-06-19 NAC722 - Jun 19, 13:44 UTCJun 19, 14:59 UTC1h 15m

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 N304KH page for operator, model, and routing details .

Mode-S A32F17 frequently asked

What is Mode-S code A32F17?
A32F17 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N304KH.
Where is Mode-S A32F17 registered?
Mode-S code A32F17 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 A32F17 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A32F17, octal 50627427, decimal 10,694,423.
What flights does A32F17 operate?
Mode-S A32F17 has broadcast 20 distinct callsigns, including NAC723, NAC722, NAC721, NAC720, NAC751.