LAX88FA273

NTSB accident investigation · Rearwin 8500 · Glendale, CA · July 29, 1988

Accident · Minor injuriesField investigationFinal report
Date
July 29, 1988, 14:01 local (21:01 UTC)
Place
Glendale, CA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N15855Rearwin 8500
Weather
Visual (VMC) · Day
Status
Completed · report July 9, 1990
Report
Approved by Office Director
FAA report
19880729028369A
Case key
25852

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

Seperation of an engine cylinder that moved into the plane of the wooden propeller blades. The propeller blades were sheared by the dislodged cylinder. The rough landing surface contributed to the accident.

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 engine power(total) - mech failure/malfCruise - normal
Engine assembly,cylinder - separationCause
Propeller system/accessories,blade - shearedCause
Forced landingDescent - emergency
Nose overLanding - flare/touchdown
Landing gear - overload
Terrain condition - rough/unevenFactor

Analysis

The pilot had penetrated a tca without clearance when, at the instructions from an air traffic controller, a police helicopter gave chase. As the helicopter neared the airplane the helicopter crew reported that parts were falling from the airplane. The helicopter followed the airplane as it descended and touched down in a rough dry river bed. The airplanes landing gear sheared on touchdown and the aircraft nosed over on its back. An engine exam revealed a cylinder had separated and sheared the propeller.

Aircraft

Registration
N15855
Reported as
Rearwin 8500
Category
Airplane
Serial number
455
Airframe hours
3,744
Engine
unknown LEBOND 85, 85 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Otto Thress, Jr.
Registered owner
Thress, Otto Jr.
Airworthiness certificate
Standard, Normal
Departed
WHP · Pocoima, CA
Destination
LGB · Long Beech, CA

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
76
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Unknown
Seat
Center
Flight hours
10,000 total

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 7 knots
Visibility
6 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 64 °F
Altimeter
29.00 inHg
Observed at
LAX, 15 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.