LAX06CA168

NTSB accident investigation · Grumman G-164A · Yuba City, CA · May 11, 2006

Accident · No injuriesData collectionFinal report
Date
May 11, 2006, 14:00 local (21:00 UTC)
Place
Yuba City, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N4892Grumman G-164A
Weather
Visual (VMC) · Day
Status
Completed · report August 29, 2006
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20060511006689A
Case key
63693

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 failure to attain and maintain an adequate airspeed during the takeoff initial climb.

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 - in flightTakeoff - initial climb
Terrain condition - short runway/landing area
Airspeed - not obtained/maintainedPilot in commandCause
Stall - inadvertentPilot in command
In flight collision with objectDescent - uncontrolled
Object - tree(s)

Analysis

The airplane stalled during departure from the airstrip and collided with trees. The airplane was loaded with 1,800 pounds of chemical and the temperature was approximately 85 degrees Fahrenheit. During the initial climb, the pilot realized that the airplane would not be able to clear the trees at the end of the runway. He attempted an avoidance maneuver but the airplane stalled and impacted trees. The pilot reported that there were no mechanical malfunctions or failures with the airplane.

Factual narrative

On May 11, 2006, at 1400 Pacific daylight time, a Grumman G-164A, N4892, stalled during the takeoff-initial climb from a private airstrip and impacted trees in Yuba City, California. Twin Cities Aviation L.L.C. operated the airplane under the provisions of 14 CFR Part 137. The airline transport pilot who held commercial privileges for single engine airplanes, and was the sole occupant, was not injured; the airplane sustained substantial damage. Visual meteorological conditions prevailed and no flight plan had been filed for the local area aerial application flight.

In a written statement, the pilot reported that he hauled two 1,800-pound loads prior to the accident flight from the private airstrip that had trees and two double trailers at its end. The airstrip was unusable the first 300 feet. As he advanced the throttle to takeoff power, he noted a slight tailwind. After the airplane lifted from the runway, the pilot realized that he would not be able to clear the trees at the end of the runway. During an avoidance maneuver, the airplane stalled and impacted the trees. The temperature was about 85 degrees Fahrenheit. The pilot reported that there were no mechanical malfunctions or failures with the airplane.

The pilot suggested the following recommendations to prevent similar accidents: when working from short airstrips or with obstacles, consider reducing loads until performance for the given conditions are determined; prior to operations from short airstrips, define a point down the runway at which the tail wheel should be off of the ground; determine a maximum temperature for maximum loading and when temperature exceeds this, reduce the load; and, when conditions are less that optimal, consult with supervisor before continuing.

Aircraft

Registration
N4892
Reported as
Grumman G-164A
Category
Airplane
Serial number
1093
Engine
Pratt and Whitney R1340-AN-1, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Twin Cities Aviation L.L.C.
Registered owner
Diversified Lenders, Inc.
Airworthiness certificate
Special, Restricted (Special)
Departed
Yuba City, CA

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
39
Injuries
None
Certificates
Airline transport, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Flight hours
7,750 total · 175 in this make and model · 2,670 as pilot in command · 200 in the last 90 days · 64 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
84 °F

FAA reports on this event · 1

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