LAX07CA152

NTSB accident investigation · Stinson 108 · Auburn, CA · May 5, 2007

Accident · No injuriesData collectionFinal report
Date
May 5, 2007, 11:35 local (18:35 UTC)
Place
Auburn, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N97648Stinson 108
Weather
Visual (VMC) · Day
Status
Completed · report June 27, 2007
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20070505007769A
Case key
65732

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 maintain an adequate airspeed during an aborted landing that resulted in a stall/mush.

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 flightLanding - aborted
Weather condition - crosswind
Weather condition - gusts
Airspeed - not maintainedPilot in commandCause
Stall/mush - encounteredPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - runway

Analysis

The airplane collided with terrain during an aborted landing. The pilot observed weather and airport traffic for an hour before departing. He planned on conducting a 30-minute local flight. When he returned to the airport and was in the traffic pattern, he observed the windsock, and noted varying crosswind and quartering headwind conditions; these were confirmed to be 9 knots gusting to 16 knots when he then checked the automated weather observation system (AWOS). Upon touchdown, the pilot experienced a strong gust from the north, and he applied full power with the intention of aborting the landing. The airplane lifted off and began a climb, then stalled, and landed hard between the runway and parallel taxiway, spreading the main landing gear and bending the airframe structure behind the cabin. The pilot stated that the airplane and engine had no mechanical failures or malfunctions during the flight.

Factual narrative

On May 5, 2006, about 1135 Pacific daylight time, a Stinson 108, N97648, collided with terrain during an aborted landing at Auburn Municipal Airport (AUN), Auburn, California. The pilot was operating the airplane under the provisions of 14 CFR Part 91. The private pilot and one passenger were not injured; the airplane sustained substantial damage. The local personal flight departed Auburn about 1100. Visual meteorological conditions prevailed, and no flight plan had been filed.

The pilot stated in a written report that prior to departing he had spent an hour observing local wind conditions and air traffic. He conducted a preflight examination of the airplane, and adjusted air in all of the tires. He reported that there were 22 gallons of useable fuel on board.

The pilot planned on conducting a 30-minute flight. Prior to departure, the wind was 6 knots out of the north gusting to 12 knots. He proceeded to taxi to runway 25 for departure, but observed the winds shifting, and elected to turn around for a departure from runway 7.

After departing in a westerly direction and clearing Auburn airspace, the pilot decided to return to the airport. He entered a left traffic pattern for runway 7. During this time, he monitored the windsock, and noted winds varying from a left quartering headwind to a direct left crosswind. He then checked the automated weather observation system (AWOS), which was reporting variable winds from the north at 9 knots, gusting to 16 knots.

Upon touchdown, the pilot experienced a strong gust from the north, and applied full power with the intention of aborting the landing. The airplane then stalled, and landed hard between the runway and parallel taxiway, spreading the main landing gear and bending the airframe structure behind the cabin. The pilot stated that the airplane and engine had no mechanical failures or malfunctions during the flight.

A witness, who is a flight instructor, observed the accident from the ramp south of runway 7. He had just cancelled a tail wheel flight lesson 10 minutes prior due to excessive crosswinds. He was facing away from the runway, but turned around as he heard the power applied to the accident airplane. As he turned, he saw the airplane approaching him, nose up at an altitude of 15-20 feet. The nose continued to climb, and he feared it might stall. The right wing then dropped, and the tail and right landing gear collided with the ground. The airplane continued to skid along the ground until it came to rest between the runway and taxiway.

Aircraft

Registration
N97648
Reported as
Stinson 108
Category
Airplane
Serial number
108648
Engine
Franklin 6A4150, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Savoir Vivre, Inc.
Airworthiness certificate
Standard, Normal
Departed
AUN · Auburn, CA
Destination
AUN · Auburn, CA
Airport
AUN · Auburn Municipal Airport, runway 07, 3,500 × 75 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
46
Certificates
Commercial, Private
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2
Flight hours
7,368 total · 106 in this make and model · 109 in the last 90 days · 40 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 4 knots, gusting 14
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 32 °F
Altimeter
30.04 inHg
Observed at
AUN

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 N97648 · 1

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