LAX02LA271

NTSB accident investigation · Mooney M20 · Sierraville, CA · September 2, 2002

Accident · No injuriesLimited investigationFinal report
Date
September 2, 2002, 15:00 local (22:00 UTC)
Place
Sierraville, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N881BMooney M20
Weather
Visual (VMC) · Day
Status
Completed · report February 5, 2004
Report
Approved by Office Director
Parties
Reno, NV FSDO
FAA report
20020902024609A
Case key
55622

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 decision to attempt takeoff in crosswind conditions that likely exceeded the capability of the airplane, and, his subsequent failure to maintain the airplane's proper alignment over the runway. Also causal was the pilot's premature liftoff and subsequent failure to attain sufficient airspeed for the ambient conditions, which resulted in a stall mush. The crosswind and high density altitude were factors.

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 - on ground/waterTakeoff - roll/run
Weather condition - high density altitudeFactor
Weather condition - crosswindFactor
In-flight planning/decision - inadequatePilot in commandCause
Proper alignment - not maintainedPilot in commandCause
Aircraft performance,crosswind capability - exceededCause
Loss of control - in flightTakeoff - initial climb
Weather condition - high density altitudeFactor
Rotation - prematurePilot in command
Airspeed - not attainedPilot in commandCause
Stall/mush - inadvertentPilot in command
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The airplane veered off the runway during takeoff from runway 21, became airborne, then impacted the ground, sheering off the left main landing gear. The pilot said that no weather briefing was obtained prior to the flight, and the windsock at the airport was missing. He estimated the winds crossing runway 21 were from 260 degrees to 270 degrees, gusting over 10 knots. The pilot said that just as he was lifting off the ground, the airplane stalled and he lowered the nose. The wind blew the airplane off the side of the runway and he applied rudder and aileron to correct back over the runway; however, the wind continued to push the airplane to the side toward an embankment. He retarded the throttle as the airplane settled to the ground. The density altitude was computed at 7,400 feet at the time of the accident. Review of the airplane's FAA approved flight manual disclosed that the maximum factory demonstrated crosswind performance capability is 11 knots for a takeoff configuration.

Factual narrative

On September 2, 2002, about 1500 Pacific daylight time, a Mooney M20, N881B, veered off the runway during takeoff from runway 21 at Dearwater Airport, Sierraville, California. The airplane became airborne, then impacted the ground, sheering off the left main landing gear. The private pilot/owner was operating the airplane under the provisions of 14 CFR Part 91. The pilot and one passenger was not injured; the airplane sustained substantial damage. The personal cross-country flight was originating at the time, en route to Cloverdale, California. Day visual meteorological conditions prevailed, and no flight plan had been filed.

In the pilot's written statement, he stated that no weather briefing was obtained prior to the flight, and the windsock was missing. He estimated the winds crossing runway 21 were from 260 degrees to 270 degrees, gusting over 10 knots. The pilot said that just as the airplane was lifting off the ground, it stalled, and he lowered the nose. The wind blew the airplane off the side of the runway; the pilot applied rudder and aileron to correct back to the runway; however, the wind continued to push the airplane off the runway toward a bank. He retarded the throttle as the propeller struck the ground. The left main gear dug into the ground and sheared off, which resulted in substantial damage to the left wing. The right wing tip dug into the earth.

The airport elevation was 4,984 feet, and the pilot said that the temperature was 85 degrees Fahrenheit. The Safety Board investigator-in-charge computed an approximate density altitude of 7,400 feet at the time of the accident. Review of the airplane's Federal Aviation Administration's approved flight manual disclosed that the maximum factory demonstrated crosswind performance capability is 11 knots for a takeoff configuration.

Aircraft

Registration
N881B
Reported as
Mooney M20
Category
Airplane
Serial number
1044
Airframe hours
3,874
Engine
Lycoming O-320-A3A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
James Cavenaugh
Registered owner
John Long et al
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 18, 2001 · 96 hours before
Departed
079 · Sierraville, CA
Destination
O60 · Cloverdale, CA
Airport
079 · Sierraville, runway 21, 3,200 × 50 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
54
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Last flight review
March 13, 2001
Seat
Left
Flight hours
485 total · 220 in this make and model · 394 as pilot in command · 22 in the last 90 days · 5 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 9 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 30 °F
Altimeter
30.14 inHg
Observed at
TRK, 19 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.