LAX96LA261

NTSB accident investigation · Rominger Eyas · Santa Rosa, CA · June 30, 1996

Accident · No injuriesLimited investigationFinal report
Date
June 30, 1996, 11:00 local (18:00 UTC)
Place
Santa Rosa, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N8012URominger Eyas
Weather
Visual (VMC) · Day
Status
Completed · report April 3, 1997
Report
Approved by Office Director
FAA report
19960630019999A
Case key
29497

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

an inadequate design change by the pilot/builder of the airplane's canopy; a malfunction of the canopy, which resulted in its separation; and failure of the pilot to flare the airplane during an emergency landing after takeoff, due to the wind blast that impaired his vision.

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.

Airframe/component/system failure/malfunctionTakeoff - initial climb
Window,canopy - malfunctionCause
Maintenance,design change - inadequateOwner/builderCause
Supervision - inadequateDesignated examiner
Window,canopy - separation
Aborted takeoff - performedPilot in command
Hard landingEmergency landing after takeoff
Flare - not attainedPilot in commandCause
Visual/aural detectionPilot in commandCause

Analysis

During takeoff, the airplane's canopy came open about 20 feet above the ground and separated. The pilot's vision was impaired by air blasting in his face. He then 'closed' the throttle, and the airplane descended to a hard landing on the runway and was damaged. Investigation revealed that FAA personnel inspected the airplane before the accident in conjunction with an application for an experimental airworthiness certificate; the pilot/builder was denied an airworthiness certificate. After addressing some of the discrepancies and making some changes, the pilot/builder submitted an application for an experimental airworthiness certificate to an FAA designated airworthiness representative (DAR). The FAA DAR issued the certificate. After the accident, FAA airworthiness inspectors, who were familiar with the airplane, examined it. They noted the airplane had been modified in a manner defined as major changes in design. One of the modifications concerned the airplane's canopy. After the postaccident examination, the FAA determined 'the aircraft was not in a safe condition for operation at the time of the accident.'

Factual narrative

On June 30, 1996, at 1100 hours Pacific daylight time, an experimental Rominger EYAS, N8012U, collided with the surface of runway 19 at the Sonoma County Airport, Santa Rosa, California, during a test flight. The airplane sustained substantial damage. The certificated private pilot/builder was not injured. The airplane was being operated by the pilot/owner as a local test flight when the accident occurred. Visual meteorological conditions prevailed at the time.

The pilot reported that the airplane's canopy came open about 20 feet above the ground and separated during takeoff. The pilot reported his vision was impaired by air blasting his face. The plane then descended to a hard landing on the runway.

The pilot/builder applied to the Federal Aviation Administration (FAA) for a special airworthiness inspection, and the FAA inspected the aircraft on two occasions in February 1996. The FAA denied the pilot the airworthiness certificate, at which time the pilot asked to have his application removed.

On June 24, 1996, the pilot submitted an application for an experimental airworthiness certificate to an FAA designated airworthiness representative (DAR). The FAA DAR issued the certificate.

After the accident, the FAA airworthiness inspectors familiar with the airplane examined it. The FAA inspectors noted the airplane had been modified in a manner defined as major changes in design. One of the modifications concerned the airplane's canopy. After the postaccident examination, the FAA determined "the aircraft was not in a safe condition for operation at the time of the accident."

Aircraft

Registration
N8012U
Reported as
Rominger Eyas
Category
Airplane, amateur-built
Airframe hours
7
Engine
Volkswagen 2.6L, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 91
Registered owner
David E. Rominger
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · June 24, 1996 · 7 hours before
Departed
STS
Airport
STS · Sonoma County, runway 19, 5,002 × 150 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
65
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
171 total · 7 in this make and model · 93 as pilot in command · 4 in the last 90 days · 1 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 59 °F
Altimeter
29.00 inHg
Observed at
STS

FAA reports on this event · 1

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