LAX90LA085

NTSB accident investigation · Piper PA-32-300 · Mammoth Lakes, CA · February 5, 1990

Accident · No injuriesLimited investigationFinal report
Date
February 4, 1990, 16:04 local (Feb 5, 1990, 00:04 UTC)
Place
Mammoth Lakes, CA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N8620NPiper PA-32-300
Weather
Visual (VMC) · Day
Status
Completed · report September 29, 1992
Report
Approved by Office Director
FAA report
19900204001569A
Case key
26731

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

The pilot's inadequate removal of ice from the fuselage, wings, and horizontal stabilizer prior to takeoff.

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 flightTakeoff - initial climb
Aircraft performance,climb capability - deterioratedFactor
Wing - iceFactor
Horizontal stabilizer surface - iceFactor
Fuselage - iceFactor
Ice/frost removal from aircraft - inadequatePilot in commandCause
Forced landingDescent - emergency
In flight collision with terrain/waterDescent - emergency
Terrain condition - rough/uneven

Analysis

The pilot reported encountering prop RPM problems which deteriorated the airplane's climb performance and he elected to land in a rough/uneven field. Ground witnesses reported that the airplane staggered into the air in ground effect and then crashed. The witnesses also stated that upon their arrival at the accident site, the airplane's wings, fuselage, and empennage were covered with ice that appeared to have melted and refrozen. The plt reported that he had removed ice before departing.

Aircraft

Registration
N8620N
Reported as
Piper PA-32-300
Category
Airplane
Serial number
32-7140012
Engine
Lycoming IO-540-K1A5, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Nathaniel, Sheldon J.
Registered owner
Unknown
Destination
FUL · Fullerton, CA
Flight plan
VFR
Airport
MMH · Mammoth Lakes, runway 27, 7,000 × 100 ft, asphalt

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
42
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 3, Valid Medical--no waivers/lim.

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 13 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F
Observed at
MMH

FAA reports on this event · 1

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

Other investigations on N8620N · 1

Matched to the same aircraft by N-number and date.