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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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August 18, 1985 · Mike Stone MONI · N97MS

Byron, CA

Overview

Report Status
Preliminary report
Event Type
Accident
Date
August 18, 1985
Injury Outcomes
No injuries (1 uninjured)
Location
Byron, CA
Aircraft
Mike Stone MONI
Tail Number
N97MS
Injuries
None
Aircraft Damage
Destroyed
NTSB Number
LAX85LA353

WHILE ON THE INITIAL TEST FLT, THE AMATUER-BUILT R. M. STONE MONI ACFT CRASHED NEAR BYRON, CA. THE PLT REPORTED THAT DURING THE FLIGHT THE ACFT BEGAN TO 'FLUTTER', FOLLOWED BY SEPARATION OF THE CANOPY. SHORTLY THEREAFTER THE ACFT ENTERED INTO AN UNCONTROLLABLE SPIN. THE PLT EXITED THE ACFTAND PARACHUTED SAFELY. THE ACFT WAS NOT RECOVERED.

Full Narrative

WHILE ON THE INITIAL TEST FLT, THE AMATUER-BUILT R. M. STONE MONI ACFT CRASHED NEAR BYRON, CA. THE PLT REPORTED THAT DURING THE FLIGHT THE ACFT BEGAN TO 'FLUTTER', FOLLOWED BY SEPARATION OF THE CANOPY. SHORTLY THEREAFTER THE ACFT ENTERED INTO AN UNCONTROLLABLE SPIN. THE PLT EXITED THE ACFTAND PARACHUTED SAFELY. THE ACFT WAS NOT RECOVERED.

Flight

Event TypeAccident
Event Time11:30 PDT
Nearest AirportCONCORD (24nm ESE)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftMike Stone MONI
Tail NumberN97MS
Aircraft CategoryAir
DamageDestroyed
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsUnknown · UNKNOWN · Reciprocating

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Unknown

Conditions

ConditionsVMC
LightDaylight
Wind330° @ 8 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter30.00 inHg
Observation Time18:45
Weather SourceWFAC

Appendix: Source Data