LAX90DVA11

NTSB accident investigation · Bob Sandlin BOB'S Executive · Sanger, CA · September 3, 1990

Accident · Minor injuriesFinal report
Date
September 3, 1990, 14:00 local (21:00 UTC)
Place
Sanger, CA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N8153RBob Sandlin BOB'S Executive
Weather
Visual (VMC) · Day
Status
Completed · report December 14, 1992
Report
Approved by Office Director
FAA report
19900903037899A
Case key
26565

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

Failure to maintain directional control during a hover.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightHover
Directional control - not maintainedPilot in commandCause
Roll overDescent - uncontrolled

Analysis

The pilot of this non-registered experimental helicopter lost directional control during a hover. The aircraft pitched up, rolled left, and impacted the ground. The pilot reportedly stated he lost control due to 'pilot error' but could not explain how. He reported no mechanical malfunctions prior to the accident. The pilot had a total flight time of 150 hours with about 48 hours in make and model.

Aircraft

Registration
N8153R
Reported as
Bob Sandlin BOB'S Executive (BOB'S EXEC)
Category
Helicopter, amateur-built
Serial number
RS32146
Airframe hours
40
Engine
Rotorway RW153, 152 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Bob Sandun

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
44
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
150 total · 48 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
15 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point -0 °F
Observed at
FAT, 4 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.