# Accident 19960603012769A: Amtr VK30, Lapeer, MI, June 3, 1996

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 3, 1996, 14:55 local time
- Place: Lapeer, MI
- Damage: Destroyed
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- Location: 43.0390° N, 83.3195° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=43.0390&lon=-83.3195&mi=10
- Aircraft: N7033G, a cancelled registration (https://openairdocs.org/deregistered/N7033G-1996-12-04) (OpenAirDocs)
- Registry model: Correy Alfred Y CIRRUS VK30 (registry code 05623J8, https://openairdocs.org/model/correy-alfred-y-cirrus-vk30) (OpenAirDocs)
- Reported make and model: AMTR VK30
- Reported engine: CONT IO550*
- People aboard: 1
- Fatal injuries: 1
- Pilot flight hours: 2,550 total
- NTSB investigation: [NTSB CHI96FA185](https://openairdocs.org/ntsb/CHI96FA185) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19960603012769A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

OBSERVED CIRCLING FIELD, DESCENDED, CRASHED INTO THE FIED, AND BURNED. (.4)ACCORDING TO WITNESSES, THE ACCIDENT PILOT REPORTED ON UNICOM THAT HIS 'FLAP BRACKET HAD BROKEN.' A PILOT WHO WAS ON THE GROUND NEAR THE ACCIDENT SITE REPORTED THAT HE OBSERVED A 'VIOLENT FLUTTER' ON THE RIGHT WING. EXAMINATION OF THE RIGHT FLAP REVEALED THE INBOARD FLAP PUSH ROD WAS FRACTURED AT THE END CAP. THE PUSH ROD WELDS EXHIBITED 'POROSITY AND SECONDARY CRACKING INDICATIVE OF POOR WELDING TECHNIQUES.' THE INBOARD CRUISE FLAP PUSH ROD 'EXHIBITED A THUMBNAIL CRACK, WHICH MAY HAVE INDICATED FAILURE BY HIGH STRESS, LOW CYCLE FATIGUE.' THE OUTBOARD CRUISE FLAP HINGE WAS FRACTURED. EXAMINATION REVEALED THE HINGE WAS CONSTRUCTED ENTIRELY OF COMPOSITE MATERIAL. THE KIT MANUFACTURERS DRAWINGS SPECIFY AN ALUMINUM CORE FOR THE HINGE. DIFFERENTIAL SCANNING CALORIMETRIC ANALYSIS OF THE COMPOSITE CRUISE FLAP SKIN REVEALED THE VINYL ESTER MATRIX MATERIAL WAS 'NOT FULLY CURED.'              (-23) ON JUNE 3, 1996, N7033G, A CURRUS VK 30 AMATEUR HOMEBUILT AIRCRAFT PILOTED BY MR. ALFRED Y. COREY, DEPARTED LAPEER AIRPORT (D95) AT APPROXIMATELY 14:15 EDT. THE AIRCRAFT CRASHED AT APPROXIMATELY 14:41 EDT, 9 MILES NORTH    OF D95, RESULTING IN ONE FATALITY. THE AIRCRAFT WAS DESTROYED.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CHI96FA185](https://openairdocs.org/ntsb/CHI96FA185), Jun 3, 1996: Corey Cirrus VK-30 (N7033G), Lapeer, MI, destroyed, 1 fatal. Probable cause: incomplete cure of the bonding material in the cruise flap, improper material in the cruise flap hinge, and improper welding of the cruise flap push rod end caps. Factors were delamination of the…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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