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sensors Mode-S transponder

AD398C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N951NB · operated by TEX AIR LLC

Hex
AD398C
Octal
53234614
Decimal
11,352,460
Country
US
Tail
N951NB
Type
CL30
No current signal · last broadcast 5d ago
Flights observed
58
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S AD398C.

Country allocation

The ICAO 24-bit address AD398C 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
N951NB - 58 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 N951NB - Jul 8, 20:00 UTCJul 8, 20:50 UTC50m
2026-07-08 N951NB - Jul 8, 16:40 UTCJul 8, 19:05 UTC2h 25m
2026-07-07 N951NB BFI → COE Jul 7, 02:45 UTCJul 7, 03:30 UTC45m
2026-07-06 N951NB COE → BFI Jul 6, 20:25 UTCJul 6, 21:05 UTC40m
2026-07-05 N951NB - Jul 5, 21:45 UTCJul 5, 23:55 UTC2h 10m
2026-07-05 N951NB SCF → SCF Jul 5, 18:55 UTCJul 5, 20:00 UTC1h 5m
2026-06-29 N951NB - Jun 29, 17:40 UTCJun 29, 18:34 UTC55m
2026-06-29 N951NB - Jun 29, 16:04 UTCJun 29, 16:59 UTC55m
2026-06-29 N951NB - Jun 29, 02:09 UTCJun 29, 04:14 UTC2h 5m
2026-06-28 N951NB - Jun 28, 23:44 UTCJun 29, 01:34 UTC1h 50m
2026-06-28 N951NB SCF → HSH Jun 28, 22:34 UTCJun 28, 23:20 UTC45m
2026-06-27 N951NB - Jun 27, 19:24 UTCJun 27, 20:09 UTC45m
2026-06-27 N951NB VGT → VGT Jun 27, 19:09 UTCJun 27, 19:15 UTC5m
2026-06-27 N951NB - Jun 27, 18:20 UTCJun 27, 18:35 UTC15m
2026-06-27 N951NB - Jun 27, 16:49 UTCJun 27, 17:34 UTC45m
2026-06-27 N951NB SCF → COE Jun 27, 13:09 UTCJun 27, 15:19 UTC2h 10m
2026-06-24 N951NB - Jun 24, 20:14 UTCJun 24, 21:09 UTC55m
2026-06-24 N951NB - Jun 24, 18:25 UTCJun 24, 19:24 UTC1h 0m
2026-06-22 N951NB - Jun 22, 19:00 UTCJun 22, 20:30 UTC1h 30m
2026-06-22 N951NB - Jun 22, 16:29 UTCJun 22, 18:00 UTC1h 30m
2026-06-22 N951NB - Jun 22, 01:19 UTCJun 22, 01:29 UTC10m
2026-06-21 N951NB - Jun 21, 23:44 UTCJun 22, 00:40 UTC55m
2026-06-21 N951NB - Jun 21, 21:49 UTCJun 21, 22:44 UTC55m
2026-06-20 N951NB - Jun 20, 16:49 UTCJun 20, 17:04 UTC15m
2026-06-20 N951NB - Jun 20, 15:04 UTCJun 20, 16:05 UTC1h 0m
2026-06-19 N951NB - Jun 19, 19:09 UTCJun 19, 19:59 UTC50m
2026-06-19 N951NB - Jun 19, 18:05 UTCJun 19, 18:20 UTC15m
2026-06-19 N951NB COE → SCF Jun 19, 00:00 UTCJun 19, 01:59 UTC1h 59m
2026-06-18 N951NB - Jun 18, 20:50 UTCJun 18, 23:00 UTC2h 10m
2026-06-17 N951NB - Jun 17, 01:25 UTCJun 17, 02:25 UTC1h 0m
2026-06-16 N951NB - Jun 16, 23:20 UTCJun 17, 00:25 UTC1h 5m
2026-06-13 N951NB SCF → AZA Jun 13, 15:00 UTCJun 13, 15:15 UTC15m
2026-06-09 N951NB COE → SCF Jun 9, 23:05 UTCJun 10, 01:05 UTC2h 0m
2026-06-09 N951NB - Jun 9, 17:15 UTCJun 9, 19:40 UTC2h 25m
2026-06-09 N951NB - Jun 9, 15:15 UTCJun 9, 15:40 UTC25m
2026-06-06 N951NB - Jun 6, 00:35 UTCJun 6, 02:40 UTC2h 5m
2026-06-05 N951NB - Jun 5, 21:55 UTCJun 6, 00:05 UTC2h 10m
2026-06-04 N951NB - Jun 4, 19:15 UTCJun 4, 20:35 UTC1h 20m
2026-06-04 N951NB - Jun 4, 17:00 UTCJun 4, 18:20 UTC1h 20m
2026-06-01 N951NB - Jun 1, 23:00 UTCJun 1, 23:45 UTC45m
2026-06-01 N951NB - Jun 1, 21:15 UTCJun 1, 22:05 UTC50m
2026-05-29 N951NB - May 29, 18:35 UTCMay 30, 00:45 UTC6h 10m
2026-05-21 N951NB - May 21, 14:35 UTCMay 21, 18:40 UTC4h 5m
2026-05-20 N951NB - May 20, 20:05 UTCMay 20, 21:00 UTC55m
2026-05-20 N951NB - May 20, 18:30 UTCMay 20, 19:25 UTC55m
2026-05-20 N951NB - May 20, 15:50 UTCMay 20, 16:10 UTC20m
2026-05-17 N951NB - May 17, 00:35 UTCMay 17, 02:45 UTC2h 10m
2026-05-15 N951NB - May 15, 17:10 UTCMay 15, 19:05 UTC1h 55m
2026-05-08 N951NB - May 8, 21:45 UTCMay 8, 22:40 UTC55m
2026-05-02 N951NB - May 2, 00:25 UTCMay 2, 01:55 UTC1h 30m

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 N951NB page for operator, model, and routing details .

Mode-S AD398C frequently asked

What is Mode-S code AD398C?
AD398C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N951NB.
Where is Mode-S AD398C registered?
Mode-S code AD398C 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 AD398C broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD398C, octal 53234614, decimal 11,352,460.
What flights does AD398C operate?
Mode-S AD398C has broadcast 1 distinct callsign, including N951NB.