WPR10LA242

NTSB accident investigation · Grumman AA-5A · Monument, OR · May 15, 2010

Accident · No injuriesLimited investigationFinal report
Date
May 14, 2010, 18:15 local (May 15, 2010, 01:15 UTC)
Place
Monument, OR
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N26414Grumman AA-5A
Defining event
Landing-flare/touchdown: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report July 22, 2010
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration FSDO
FAA report
20100514033969A
Case key
76014

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 misjudged flare during landing resulting in a hard landing and loss of directional control.

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: landing flareAircraft › Aircraft oper/perf/capability · Incorrect use/operationGrumman American Avn. AA-5A: 3 casesAll aircraft: 1,285 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Effect on equipmentGrumman American Avn. AA-5A: 2 casesAll aircraft: 933 cases
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedGrumman American Avn. AA-5A: 5 casesAll aircraft: 3,958 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 the airplane touched down hard at an angle near the approach end of the runway. After touchdown, the airplane veered to the right, departed the runway, and collided with 10-foot juniper trees. The pilot stated that the runway was sloped with a hump in the middle and a slight dogleg. He had previously landed downhill, but the local pilots recommended uphill. He thought that the different sight picture resulted in the early flare and subsequent hard landing. The pilot reported no mechanical failures or malfunctions with the airplane at the time of the accident.

Factual narrative

On May 14, 2010, about 1815 Pacific daylight time, a Grumman AA-5A, N26414, experienced a hard landing and veered off the runway at Monument Municipal Airport near Monument, Oregon. The owner/pilot was operating the airplane under the provisions of 14 Code of Federal Regulations (CFR) Part 91. The certificated private pilot and one passenger were not injured. The airplane sustained substantial damage to the right wing spar and right aileron from impact forces. The cross-country personal flight departed Salem, Oregon, about 1645, with a planned destination of Monument. Visual meteorological conditions prevailed, and no flight plan had been filed. The pilot reported that the stall horn had sounded twice briefly during the approach to the runway, but he did not hear the stall warning horn after the flare. The pilot stated that the airplane just settled and touched down hard at an angle near the approach end of runway 32. The airplane then veered to the right, departed the runway, and collided with 10-foot juniper trees. The pilot stated that the runway was sloped with a hump in the middle and a slight dogleg. He had previously landed downhill, but the local pilots recommended landing uphill. He thought that the different sight picture resulted in an early flare. The pilot reported no mechanical failures or malfunctions with the airplane prior to the accident.

Aircraft

Registration
N26414
Reported as
Grumman AA-5A
Category
Airplane
Serial number
AA5A0578
Airframe hours
5,323
Engine
Lycoming O-320-E2G, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Salem Pilots Association
Registered owner
Salem Pilots Association
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 24, 2010 · 34 hours before
Departed
SLE · Salem, OR
Destination
12S · Monument, OR
Airport
12S · Monument Municipal, runway 32, 2,104 × 29 ft, gravel

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
63
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
March 9, 2009
Seat
Left
Flight hours
606 total · 268 in this make and model · 554 as pilot in command · 9 in the last 90 days · 2 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 39 °F
Altimeter
29.92 inHg
Observed at
KPDT, 55 nm away

Docket · 1

The files NTSB released with the investigation on June 21, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 506 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 N26414 · 1

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