WPR13CA394

NTSB accident investigation · Henderson Michael E Glastar · Sequim, WA · August 31, 2013

Accident · No injuriesData collectionFinal report
Date
August 31, 2013, 15:45 local (22:45 UTC)
Place
Sequim, WA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N789MHHenderson Michael E Glastar
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report December 19, 2013
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration FSDO
FAA report
20130831015969A
Case key
87931

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 improper soft field landing technique, and failure to maintain aircraft control during the landing.

Findings · 4

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: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedHenderson Michael E GLASTAR: 1 caseAll aircraft: 3,958 casesProbable cause
Runway/land/takeoff/taxi surfaceEnvironmental issues › Physical environment · Effect on equipmentHenderson Michael E GLASTAR: 1 caseAll aircraft: 253 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 landed the experimental nose wheel-equipped airplane 500 feet beyond the landing threshold of the grass runway, having performed a full-flap, power-off approach. The runway was traversed by two asphalt taxiways, and during the ground roll, he observed a depression in the turf just before the first taxiway intersection. He then applied back pressure to the elevator control; however, the nose wheel dug into the depression, and the airplane nosed over. The fuselage and wings were substantially damaged. The runway was normally 3,500 foot long, but at the time of the accident, the second half was closed. This was reflected in a NOTAM (notice to airmen), and the pilot was unaware of the closure. According to the airport manager, the depression was a drainage ditch, and was located to the left of runway, adjacent to the parallel asphalt runway. The pilot reported no preimpact mechanical malfunction or failure with the airplane that would have precluded normal operation.

Factual narrative

The pilot landed the experimental nose wheel-equipped airplane 500 feet beyond the landing threshold of the grass runway, having performed a full-flap, power-off approach. The runway was traversed by two asphalt taxiways, and during the ground roll, he observed a depression in the turf just before the first taxiway intersection. He then applied back pressure to the elevator control; however, the nose wheel dug into the depression, and the airplane nosed over. The fuselage and wings were substantially damaged. The runway was normally 3,500 foot long, but at the time of the accident, the second half was closed. This was reflected in a NOTAM (notice to airmen), and the pilot was unaware of the closure. According to the airport manager, the depression was a drainage ditch, and was located to the left of runway, adjacent to the parallel asphalt runway. The pilot reported no preimpact mechanical malfunction or failure with the airplane that would have precluded normal operation.

Aircraft

Registration
N789MH
Reported as
Henderson Michael E Glastar
Category
Airplane, amateur-built
Serial number
5650
Built
2004
Airframe hours
482
Engine
Lycoming O-320 SERIES, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · March 3, 2013 · 10 hours before
Departed
KPAE · Everett, WA
Destination
W28 · Sequim, WA
Airport
W28 · Sequim Valley Airport, runway 27R, 3,500 × 100 ft, grass/turf

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
48
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
August 2, 2012
Seat
Left
Restraint
4-point
Flight hours
1,270 total · 307 in this make and model · 1,219 as pilot in command · 32 in the last 90 days · 3 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 54 °F
Altimeter
29.94 inHg
Observed at
KCLM, 12 nm away

Docket · 3

The files NTSB released with the investigation on December 9, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 883 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.