WPR10CA020

NTSB accident investigation · Mooney M20J · Hesperia, CA · October 17, 2009

Accident · Minor injuriesData collectionFinal report
Date
October 17, 2009, 08:18 local (15:18 UTC)
Place
Hesperia, CA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1084ZMooney M20J
Defining event
Landing: Landing area undershoot
Weather
Visual (VMC) · Day
Status
Completed · report March 3, 2010
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration FSDO
FAA report
20091017019369A
Case key
74914

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 improper glide path and failure to maintain clearance from the airport perimeter fence during the landing approach.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedMooney M20J: 9 casesAll aircraft: 809 casesProbable cause
Object/animal/substance: fence/fence postEnvironmental issues › Physical environment · Response/compensationMooney M20J: 2 casesAll aircraft: 313 cases
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotMooney M20J: 36 casesAll aircraft: 9,295 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that on short final to the runway the airplane encountered a downdraft. He applied engine power, but the main landing gear struck the airport perimeter fence and the airplane collided with the runway surface. The airplane sustained substantial damage to the fuselage and both wings during the accident sequence. The pilot reported light and variable winds at the time of the accident. The Federal Aviation Airport Facilities Directory states that a perimeter fence is located at the approach end of the accident runway. The pilot reported that the airplane and engine had no mechanical failures or malfunctions prior to the accident.

Factual narrative

The pilot reported that on short final to the runway the airplane encountered a downdraft. He applied engine power, but the main landing gear struck the airport perimeter fence and the airplane collided with the runway surface. The airplane sustained substantial damage to the fuselage and both wings during the accident sequence. Light winds existed at the time of the accident. The Federal Aviation Airport Facilities Directory states that a perimeter fence is located at the approach end of the accident runway. The pilot reported that the airplane and engine had no mechanical failures or malfunctions prior to the accident.

Aircraft

Registration
N1084Z
Reported as
Mooney M20J
Category
Airplane
Serial number
24-1132
Airframe hours
2,335
Engine
Lycoming IO-360, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 1, 2009 · 4 hours before
Departed
CMA · Camarillo, CA
Destination
L26 · Hesperia, CA
Airport
L26 · Hesperia, runway 21, 3,910 × 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
69
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
March 1, 2008
Seat
Left
Flight hours
2,500 total · 2,338 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
59 °F, dew point 36 °F
Altimeter
30.07 inHg
Observed at
VCV, 13 nm away

Docket · 1

The files NTSB released with the investigation on November 18, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 557 KB in all.

FAA reports on this event · 1

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