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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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NTSB Report

February 10, 1991 · Beech B95 · N2712Y

Riverside, CA

Overview

Report Status
Probable Cause
Event Type
Accident
Date
February 10, 1991
Injury Outcomes
No injuries (3 uninjured)
Location
Riverside, CA
Aircraft
Beech B95
Tail Number
N2712Y
Operator
Joseph Sheble Iii
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX91LA123

THE CERTIFICATED COMMERCIAL PILOT AND TWO PASSENGERS WERE ENROUTE TO THEIR DESTINATION AIRPORT ON AN INSTRUMENT FLIGHT PLAN, WHEN A COMPLETE ELECTRICAL FAILURE OCCURRED. THE PILOT FAILED TO NOTICE THAT BOTH AMMETERS WERE READING ZERO DUE TO THE FAILURE OF BOTH CURRENT LIMITERS IN THE CHARGING SYSTEM. THE BATTERY WAS DEPLETED AND ALL ELECTRICAL POWER LOST. THE PILOT ELECTED TO LAND BEFORE DARK AND FAILED TO FOLLOW THE EMERGENCY GEAR EXTENSION PROCEDURE TO FULLY EXTEND THE LANDING GEAR. THE GEAR COLLAPSED UPON LANDING ON A TAXIWAY AT A MILITARY AIR FORCE BASE.

NTSB Probable Cause

FAILURE OF THE PILOT TO FOLLOW THE EMERGENCY GEAR EXTENSION PROCEDURE TO FULLY EXTEND THE LANDING GEAR. CONTRIBUTING TO THE ACCIDENT WAS THE FAILURE OF THE PILOT TO MONITOR THE CONDITION OF THE ELECTRICAL POWER SYSTEM, LEADING TO THE COMPLETE LOSS OF ELECTRICAL POWER.

Full Narrative

THE CERTIFICATED COMMERCIAL PILOT AND TWO PASSENGERS WERE ENROUTE TO THEIR DESTINATION AIRPORT ON AN INSTRUMENT FLIGHT PLAN, WHEN A COMPLETE ELECTRICAL FAILURE OCCURRED. THE PILOT FAILED TO NOTICE THAT BOTH AMMETERS WERE READING ZERO DUE TO THE FAILURE OF BOTH CURRENT LIMITERS IN THE CHARGING SYSTEM. THE BATTERY WAS DEPLETED AND ALL ELECTRICAL POWER LOST. THE PILOT ELECTED TO LAND BEFORE DARK AND FAILED TO FOLLOW THE EMERGENCY GEAR EXTENSION PROCEDURE TO FULLY EXTEND THE LANDING GEAR. THE GEAR COLLAPSED UPON LANDING ON A TAXIWAY AT A MILITARY AIR FORCE BASE.

Flight

Event TypeAccident
Event Time18:14 PST
Nearest AirportMARCHAFB (0nm N)
Runway5
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftBeech B95
Tail NumberN2712Y
Aircraft CategoryAir
DamageSubstantial
OperatorJoseph Sheble Iii
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsLycoming · O-360 · Reciprocating · 180
Seats4

People & Injuries

Injury SummaryNo injuries (3 uninjured)
Fatal0
Serious0
Minor0
Uninjured3
Total3
Crew 1Age 27 · First Class

Conditions

ConditionsVMC
LightBright Night
Wind270° @ 6 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point68 F / 37 C
Altimeter29.00 inHg
Observation Time01:55
Weather SourceWFAC

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Appendix: Source Data