- Date
- August 5, 1983, 08:37 local (13:37 UTC)
- Place
- Fond Du Lac, WI
- Injuries
- 2 minor, 1 uninjured
- Damage
- Destroyed
- Phase of flight
- Landing
- Aircraft
- N7775CGrumman Scan Type 30
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19830805039429A
- Case key
- 12012
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
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.
Analysis
After takeoff, the aircrew flew to the southern end of lake winnebago where they made several uneventful water landings. They estimated that the wind was from the northeast at 5 to 6 KTS. The water was described as smooth with only small ripples. On the 6th apch, the gear handle was checked in the up position & the amber gear up indicator light was illuminated. The amphibious acft touched down on the water with no bounce or porpoise. About 2 or 3 seconds after touchdown, the acft yawed violently to the right & rolled left. The left float & wing tip hit the water & the left wing separated. The hull rolled over, but the occupants egressed before the acft sank. A diver noted that the right gear was extended. After the acft was recovered, the right main gear actuator rod clevis was found to have fractured. The fracture surface had signs of overload failure. The lock nut had been screwed tightly against the clevis & the lock nut threads had produced gouge marks on the unthreaded portion of the shank of the clevis.
Aircraft
- Registration
- N7775C
- Reported as
- Grumman Scan Type 30 (SCAN TYPE)
- Category
- Airplane
- Engine
- Lycoming R-680-E, 300 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Instructional · Part 91
- Registered owner
- William E. Harrison Jr.
- Airworthiness certificate
- Standard, Normal
- Departed
- OSH · Oshkosh, WI
- Airport
- OSH · Lake Winnebego
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
- Certificate
- Airline transport
- Airplane ratings
- Single-engine land, Single-engine sea, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Unknown
- Seat
- Left
- Flight hours
- 10 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 45° at 5 knots
- Visibility
- 20 statute miles
- Lowest ceiling
- None
- Temperature
- 70 °F
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 N7775C · 2
Matched to the same aircraft by N-number and date.