- Date
- January 27, 1991, 16:50 local (20:50 UTC)
- Place
- Round Lake, NY
- Injuries
- 1 fatal
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N71817Hayes Kolb/Twinstar
- Weather
- Visual (VMC) · Dusk
- Status
- Completed · report May 3, 1993
- Report
- Approved by Office Director
- FAA report
- 19910127000999A
- Case key
- 36748
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
In-flight structural failure of the outboard wing attachment fittings on both wings due to an undetermined reason.
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
The amateur built acft was on its 1st flt after being constructed. It flew about 5 min before the owner/builder/plt returned the plane for landing. At about 75 ft AGL on final apch, both wings failed & the acft crashed. Investigation revealed that steel bolts were missing from the outboard wing strut attachment fittings, rivets that held the outboard attachment fittings to the wing had sheared off. The reason for the missing bolts and sheared revits was not verified. The acft had been registered with the FAA, but there was no airworthiness certificate. Also, no weight & balance data was found in the acft, the plt was not an FAA certified airman, nor did he possess a valid FAA medical certificate.
Aircraft
- Registration
- N71817
- Reported as
- Hayes Kolb/Twinstar (KOLB/TWINS)
- Category
- Airplane, amateur-built
- Engine
- Rotax 503, 47 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Clifford G Hayes
- Airport
- NY46 · Round Lake, runway 14, 2,000 × 60 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
- 38
- Seat
- Left
Weather
- Conditions
- Visual (VMC) · Dusk
- Wind
- Variable at 5 knots
- Visibility
- 7 statute miles
- Temperature
- -0 °F, dew point -0 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.