WPR11CA251

NTSB accident investigation · Boeing B75N1 · Torrance, CA · May 19, 2011

Accident · No injuriesData collectionFinal report
Date
May 19, 2011, 15:30 local (22:30 UTC)
Place
Torrance, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N81235Boeing B75N1
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report August 22, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110519010259A
Case key
79313

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's inadequate compensation for wind conditions.

Findings · 2

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.

Action: incorrect action performancePersonnel issues › Action/decision · PilotBoeing B75N1: 2 casesAll aircraft: 1,386 casesProbable cause
Wind: windshearEnvironmental issues › Conditions/weather/phenomena · Response/compensationBoeing B75N1: 1 caseAll aircraft: 90 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 was entering the traffic pattern with the intent to land, when the wind direction shifted and the air traffic controller requested the pilot land on the opposite runway. According to the pilot, when the airplane was on final approach at approximately 20 feet above ground level, it experienced windshear and landed hard on the runway. Subsequently the airplane turned sharply left causing the right lower wing to contact the runway, damaging the main spar. The pilot reported that there were no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal flight.

Factual narrative

The pilot was entering the pattern with the intent to land when the wind direction shifted and the air traffic controller requested the pilot land on the opposite runway. According to the pilot on short final at approximately 20 feet above ground level, the airplane experienced a wind shear and the plane landed hard on the runway. Subsequently the airplane turned sharply left causing the right lower wing to contact the runway, damaging the main spar. The pilot reported that there were no preimpact mechanical malfunctions or failures with the airframe and engine that would have precluded normal flight.

Aircraft

Registration
N81235
Reported as
Boeing B75N1
Category
Airplane
Serial number
75-7990
Airframe hours
190
Engine
Continental W670-6a, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 1, 2010 · 17 hours before
Departed
KTOA · Torrance, CA
Destination
KTOA · Torrance, CA
Airport
KTOA · Zamperini Field Airport, runway 29R, 5,000 × 150 ft, concrete

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
58
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
November 1, 2010
Seat
Rear
Flight hours
672 total · 221 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 54 °F
Altimeter
29.95 inHg
Observed at
KTOA

Docket · 1

The files NTSB released with the investigation on June 23, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 562 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.

Other investigations on N81235 · 1

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