WPR11LA384

NTSB accident investigation · Grumman Acft ENG Cor-Schweizer G-164B · Oakesdale, WA · August 15, 2011

Accident · Minor injuriesLimited investigationFinal report
Date
August 15, 2011, 07:15 local (14:15 UTC)
Place
Oakesdale, WA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6628QGrumman Acft ENG Cor-Schweizer G-164B
Defining event
Landing-landing roll: Nose over/nose down
Weather
Visual (VMC) · Day
Status
Completed · report March 8, 2012
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110815017039A
Case key
81496

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 decision to land with a high tailwind, which resulted in a nose-over.

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.

Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationGrumman Acft ENG Cor-Schweizer G-164B: 2 casesAll aircraft: 594 cases

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 took off in the tailwheel-equipped airplane and noted that the wind velocity was higher than expected, so he elected to return to the departure strip. The pilot reported that the wind produced a 12- to 15-mph tailwind for landing and that the combined effects of the tailwind and excessive airspeed caused the airplane’s tail to immediately begin to rise after touchdown. After rolling about 20 feet, the airplane nosed over and came to rest inverted. The pilot said that the accident could have been prevented if he had flown in less windy conditions and that he should have executed a go-around.

Factual narrative

On August 15, 2011, about 0715 Pacific daylight time, a Schweizer G-164B, N6628Q, nosed over during landing at a private airstrip outside of Oakesdale, Washington. Fender Air Service, Inc., owned and operated the airplane as an aerial application flight under the provisions of 14 Code of Federal Regulations Part 137. The commercial pilot sustained minor injuries; the airplane sustained substantial damage to the wings, empennage, and firewall. Visual meteorological conditions prevailed, and no flight plan had been filed for the local flight. The pilot reported that he was flying from one landing strip to another; however, the wind velocity was higher than expected after takeoff. He elected to return to the departure strip so that he could call the other location to check the current wind conditions. The pilot reported that the wind was blowing out of the south-southwest, which favored a 12- to 15-mile-per-hour tailwind. While landing the tail wheel equipped airplane, the pilot stated that due to the tailwind and excessive airspeed the airplane’s tail immediately began coming up after touchdown. After 20 feet of roll, it nosed over and came to rest inverted.

Aircraft

Registration
N6628Q
Reported as
Grumman Acft ENG Cor-Schweizer G-164B
Category
Airplane
Serial number
154B
Airframe hours
9,934
Engine
P&W R-1340-S3H1-G, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Fender Air Service, Inc
Registered owner
Darrell L Fender
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · December 12, 2010
Departed
Oakesdale, WA
Destination
Oakesdale, WA
Airport
Private Dirt Strip

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
23
Injuries
Minor
Certificates
Commercial, Private
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
May 17, 2010
Seat
Center
Flight hours
1,050 total · 250 in this make and model · 226 in the last 90 days · 150 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 16 knots, gusting 27
Visibility
10 statute miles
Lowest ceiling
None
Temperature
59 °F, dew point 63 °F
Altimeter
30.01 inHg
Observed at
PUW, 24 nm away

Docket · 1

The files NTSB released with the investigation on January 18, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 355 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 N6628Q · 3

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