- Date
- April 30, 2017, 15:10 local (22:10 UTC)
- Place
- Napa, CA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N89SRZwicker Murray R Glastar
- Defining event
- Landing-landing roll: Landing gear collapse
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 3, 2017
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA/ FSDO
- FAA report
- 20170430004519A
- Case key
- 95227
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 amphibious float-equipped airplane's encounter with a submerged object during a water landing, which resulted in a nose-over.
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.
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 of the amphibious float-equipped airplane reported that, after the owner had completed multiple touch-and-go water landings, he chose to take the flight controls and perform a few water landings himself. He added that his first touch-and-go water landing "went very well." However, during the second touch-and-go water landing, the touchdown was smooth, but as he added power to "begin the climb away," the airplane veered right and nosed over into the water. He added that the right float may have struck a submerged object during the landing. The right wing lift strut sustained substantial damage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. According to a Federal Aviation Administration (FAA) Aviation Safety Inspector who inspected the accident airplane postaccident, the forward first third section of the right float was bent upward and had "scratching and scoring" marks on the bottom side of the float. He added that he did not observe any rust or corrosion on either float. A review of the FAA airman certification database revealed that neither pilot held an airplane single-engine sea rating.
Factual narrative
The pilot of the amphibious float-equipped airplane reported that, after the owner had completed multiple touch-and-go water landings, he elected to take the flight controls and perform a few water landings himself. He added that his first touch-and-go water landing "went very well." However, during the second touch-and-go water landing, the touchdown was smooth, but as he added power to "begin the climb away", the airplane veered right and nosed over into the water. He added that, the right float may have struck a submerged object during the landing. The right wing lift strut sustained substantial damage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. According to a Federal Aviation Administration (FAA) Aviation Safety Inspector who inspected the accident airplane postaccident, the forward first third section of the right float was bent upward and had "scratching and scoring" marks on the bottom side of the float. He added that he did not observe any rust or corrosion on either float. A review of the FAA airman certification database revealed that neither pilot held an airplane single engine sea rating.
Aircraft
- Registration
- N89SR
- Reported as
- Zwicker Murray R Glastar (NO SERIES)
- Category
- Airplane, amateur-built
- Serial number
- 5492
- Built
- 1997
- Engine
- Lycoming O-360 SERIES, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Departed
- CCR · Concord, CA
- Destination
- CCR · Concord, CA
- Equipment
- None
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 · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 67
- Injuries
- None
- Certificates
- Flight instructor, Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Without waivers/limitations
- Last flight review
- March 1, 2017
- Seat
- Right
- Restraint
- 4-point
- Flight hours
- 4,500 total
- Role
- Other flight crew
- Age
- 75
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, With waivers/limitations
- Seat
- Left
- Restraint
- 4-point
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 360° at 4 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 82 °F, dew point 46 °F
- Altimeter
- 30.04 inHg
- Observed at
- KSMF, 30 nm away
Docket · 4
The files NTSB released with the investigation on July 19, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.0 MB 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.