LAX92LA223

NTSB accident investigation · Aerospatiale TB-20 · Groveland, CA · May 25, 1992

Accident · No injuriesLimited investigationFinal report
Date
May 25, 1992, 14:00 local (21:00 UTC)
Place
Groveland, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2824FAerospatiale TB-20
Weather
Visual (VMC) · Day
Status
Completed · report June 30, 1993
Report
Approved by Office Director
FAA report
19920525017099A
Case key
27629

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 inadvertent placement of the landing gear selector in the up position during the initial portion of the landing rollout.

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.

Main gear collapsedLanding - roll
Landing gear,gear lever - deployed inadvertentlyCause
Gear retraction - selectedPilot in commandCause
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - ditch

Analysis

The pilot reported that approaching the destination airport he extended the wing flaps, lowered the landing gear and observed three green gear lights. The airplane 'floated' over the 3640-foot long runway and initially touched down 800 to 900 feet beyond the threshold. Thereafter, the right main landing gear partially retracted, the wing contacted the runway's surface and the airplane veered into a ditch. During the examination of the wreckage, the wing flaps were found in the retracted position and the landing gear system functioned normally. The physical evidence indicated that during rollout the landing gear motor was activated while some weight was on the left main gear. This resulted in a bending of the left gear actuator arm and the partial retraction of the right gear. The flaps were found ground impact damaged and retracted.

Aircraft

Registration
N2824F
Reported as
Aerospatiale TB-20
Category
Airplane
Serial number
1103
Airframe hours
231
Engine
Lycoming IO-540-C4D5, 250 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Paul James
Registered owner
Paul James
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · April 24, 1992 · 26 hours before
Departed
MRY · Monterey, CA
Airport
Q68 · Groveland, runway 27, 3,640 × 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
52
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
345 total · 57 in this make and model · 237 as pilot in command · 32 in the last 90 days · 12 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
30 statute miles
Lowest ceiling
None
Temperature
90 °F

FAA reports on this event · 1

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