LAX88DUA01

NTSB accident investigation · Hernandez Thorp T-18 · Palos Verdes, CA · April 23, 1988

Accident · FatalFinal report
Date
April 23, 1988, 15:00 local (22:00 UTC)
Place
Palos Verdes, CA
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N1394AHernandez Thorp T-18
Weather
Visual (VMC) · Day
Status
Completed · report July 21, 1989
Report
Approved by Office Director
FAA report
19880423010069A
Case key
25713

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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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 flightManeuvering
Reason for occurrence undeterminedCause
In flight collision with terrain/waterDescent
Terrain condition - water,rough

Analysis

The pilot was demonstrating the acft for the passenger for a possible sale. They were part of a flight of two over the pacific ocean. The owner of the aircraft being demonstrated was in the second aircraft. The pilot of the demo acft radioed to the second acft that he was going to let the passenger fly, who was a comm pilot. The acft initially began making tight turns but then turned away from each other. The plt of the second acft did not see the demo acft again. A ground witness reported seeing an acft diving straight towards the water with no rotation. A search by the second acft revealed nothing. Acft debris belonging to the demo acft was later found on the beach and exhibited extreme accordian signatures.

Aircraft

Registration
N1394A
Reported as
Hernandez Thorp T-18
Category
Airplane, amateur-built
Serial number
T-18-143
Airframe hours
214
Engine
Lycoming O-320-E3D, 160 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Hernandez, John M
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · May 21, 1987 · 14 hours before
Departed
CPM · Compton, CA
Destination
CPM

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
47
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
706 total · 127 in this make and model · 617 as pilot in command · 50 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 15 knots
Visibility
25 statute miles
Lowest ceiling
2,000 ft broken
Temperature
57 °F
Altimeter
30.00 inHg
Observed at
TOA, 13 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.