Registry / Textron Aviation Inc / 208B / N401S

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N401S V

Textron Aviation Inc 208B · 2015 · East Haven, CT

This aircraft — FAA registration facts

N401S is a 2015 Textron Aviation Inc 208B (serial 208B5261), registered to Underhill Holdings LLC (LLC) in East Haven, CT. Its FAA registration is recorded as v and expires April 2031; the airworthiness certificate dates from December 2015 (10 years ago). It carries a P&W Canada PT6A-140 engine rated at 867 hp, the engine on 98% of registered Textron Aviation Inc 208Bs. Its Mode-S transponder broadcasts the ICAO 24-bit address A4B1E8. It is one of 233 Textron Aviation Inc 208B aircraft on the FAA registry. Underhill Holdings LLC holds 2 aircraft on the registry.

Registered owner
Underhill Holdings LLC
Owner type
LLC
Based in
East Haven, CT
Serial number
208B5261
Year built
2015 · 11 yrs old
Airworthiness class
Standard – Normal
FAA status
V
Mode-S / ICAO24
A4B1E8 · 51130750 octal
Certificate issued
Apr 22, 2024
Airworthiness date
Dec 30, 2015
Last FAA activity
Apr 22, 2024
Registration expires
Apr 30, 2031
FAA region
Western

Source: FAA aircraft registry (public record). Community reviews and photos below.

Engine on this aircraft

Engine
P&W Canada PT6A-140
Engine type
Turbo-prop
Rated power
867 hp
Power per seat
72 hp
FAA engine code
51499

187 of the 191 registered Textron Aviation Inc 208B carry this engine (98%), across 4 engine variants on the type.

Source: FAA engine reference (ENGINE.txt), matched on this registration's engine code.

Community facts about N401S

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Flight history & live tracking recent positions on file

ICAO24: a4b1e8
Last known — 2 weeks ago N401S
Observed 2026-10-21 18:20:27 MST
Auto-refresh • Updated 0s ago
Ground speed
150 kt
Altitude (baro)
5,875 ft
Track
162.0°
Squawk
—
Wind / OAT
—
Autopilot target
—
Lat 28.29492, Lng -80.70293
Map loads when scrolled into view …
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Aircraft Type — ACFTREF 2073712

Textron Aviation Inc 208B
Engines: 1
Type: turboprop
Seats: 12
Category: Standard

Engine — CODE 51499

Manufacturer: P&W Canada
Model: PT6A-140
Type: Turbo-prop
Horsepower: 867 HP

FAA Registration Record

N-Number: N401S
Serial Number: 208B5261
Year Manufactured: 2015
ACFTREF Code: 2073712
Engine Code: 51499
Status: V (V)
Certification: Standard – Normal
Type Aircraft: Fixed Wing Single Engine (4)
Type Engine: Turbo-prop (2)
Source: master

Documents & resources

Commonly available reference sources for the Textron Aviation Inc 208B. Always confirm against the manufacturer's current, authoritative publication for your specific aircraft.

View the Textron Aviation Inc 208B model overview, reviews & photos →

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Transponder / ADS-B

Mode S (octal): 51130750
ICAO 24-bit (hex): A4B1E8

Registrant

Underhill Holdings LLC
LLC
View all 2 aircraft registered to this owner →
60 Thompson Ave
East Haven, CT, 065123746
FAA Region: Western

Key Dates

Certificate Issued Apr 22, 2024
Airworthiness Dec 30, 2015
Expiration Apr 30, 2031
Last Activity Apr 22, 2024
Data as of Nov 2, 2026

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