Flight Tracker
N401MS
2015 MICHAEL W STEWART PITTS S1
Fixed wing single engine · Reciprocating · Experimental
2 NTSB records for this tail number, including substantial damage. See the full record below.

Registration

Registered Owner
MARTINE ZACHARY
Registrant Type
Individual
Location
CARTERVILLE, IL
Status
Valid
Certificate Issued
Jan 30, 2026
Airworthiness Date
May 28, 2015
Expires
Jan 31, 2033
Approved Operations
Amateur Built

Airframe

Manufacturer
MICHAEL W STEWART
Model
PITTS S1
Year
2015
Serial Number
085
Seats
1
Engines
1
Max Weight
Up to 12,499 lb
Cruise Speed
-
Type Certificate
-

Powerplant

Engine Manufacturer
LYCOMING
Engine Model
O-320-EXP
Type
Reciprocating
Power
160 hp

Live Flight Status

Checking live traffic…

Coverage depends on ground receiver reception and is not a complete picture of traffic.

Transponder & Tracking

Mode S Code (Hex)
A4B17C
Mode S Code (Octal)
51130574

The hex code is the aircraft's ICAO 24-bit address, broadcast by its ADS-B transponder. It is the key used to match live position reports to this registration.

Ownership History: 2 prior registrations

RegistrantLocationCancelled
CENTURION INVESTMENTS INC DBA SAINT LOUIS, MO Sep 27, 2001
MISSISSIPPI STATE UNIVERSITY STARKVILLE, MS Sep 3, 2009

NTSB Accident & Incident Record

Dec 31, 2025 Accident Substantial Carbondale, IL
Injuries1 minor
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause

A loss of engine power due to fuel starvation resulting from an uncommanded change to the fuel servo mixture position due to the improperly installed mixture cable.

NTSB CEN26LA074
Oct 18, 2006 Accident Substantial Starkville, MS
Injuries1 minor
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause

The structural failure of the airframe due to the inadvertent excessive airspeed during maneuvering.

NTSB DFW07LA006