WPR11CA445

NTSB accident investigation · Aero SP Z O O AT-4 LSA · San Diego, CA · September 10, 2011

Accident · No injuriesData collectionFinal report
Date
September 10, 2011, 13:15 local (20:15 UTC)
Place
San Diego, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N334RAAero SP Z O O AT-4 LSA
Defining event
Landing-flare/touchdown: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report February 6, 2012
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110910022509A
Case key
81769

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 recovery from a bounced landing and failure to maintain control during an attempted go-around.

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: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAero SP Z O O AT-4 LSA: 1 caseAll aircraft: 3,958 casesProbable cause
Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Not attained/maintainedAero SP Z O O AT-4 LSA: 2 casesAll aircraft: 1,285 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAero SP Z O O AT-4 LSA: 1 caseAll 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, during his landing approach, while about 3 feet above the ground, the airplane lost all lift and touched down hard. He said that the airplane bounced, and while airborne, he applied power to prevent a second hard landing, but the airplane rotated to the left. The airplane bounced a second time, and an air traffic controller told the pilot to go-around. The pilot applied full power, but he lost control, the airplane yawed further to the left, and the left wing struck the ground. The airplane sustained substantial damage when the nose and right main landing gear collapsed and the airplane slid to a stop.

Factual narrative

According to the pilot's written statement, the approach for landing was normal. After the airplane crossed the runway numbers, the pilot initiated the flare. The pilot said that when the airplane was about 3 feet above the runway, it "lost all lift," and the pilot could not prevent a hard landing. The airplane bounced, and while airborne again, the pilot applied power to prevent a second hard landing, but the airplane began to weather vane to the left. The airplane bounced a second time, and a tower controller instructed the pilot to go-around. The pilot applied full power, the airplane yawed further to the left, and the left wing struck the ground. The nose and right main landing gear collapsed, the airplane slid to a stop, and the engine was stopped by the propeller striking the ground. The pilot attributed the loss of lift to a wind gust, and the loss of directional control to the slow speed of the airplane, and the high P-factor and torque from full engine power. The pilot reported that he was landing to the west, and that the winds were reported as being from the southwest at 10 knots, with no gusts.

Aircraft

Registration
N334RA
Reported as
Aero SP Z O O AT-4 LSA
Category
Airplane
Serial number
AT4-016
Airframe hours
1,376
Engine
Rotax 91282, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Special light-sport (Special)
Last inspection
Annual · May 3, 2011 · 50 hours before
Departed
SEE · San Diego, CA
Destination
SEE · San Diego, CA
Airport
SEE · Gillespie Field Airport, runway 27L, 2,738 × 60 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
58
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Left
Flight hours
241 total · 49 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 55 °F
Altimeter
29.87 inHg
Observed at
MYF, 9 nm away

Docket · 1

The files NTSB released with the investigation on November 21, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 459 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.