ASN Wikibase Occurrence # 354855
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can
submit corrected information.
Date: | Saturday 24 January 1998 |
Time: | 16:30 LT |
Type: | Lake LA-4-200 |
Owner/operator: | Sylvan Educational Endeavors |
Registration: | N2994P |
MSN: | 956 |
Year of manufacture: | 1978 |
Total airframe hrs: | 1807 hours |
Engine model: | Lycoming IO-360-A1B |
Fatalities: | Fatalities: 0 / Occupants: 2 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Sarasota, FL -
United States of America
|
Phase: | Initial climb |
Nature: | Private |
Departure airport: | |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The pilot had just completed a touch-and-go landing on a lake. During the initial climb at an altitude of less than 500 feet, the airplane shuddered, then pitched nose down. The pilot reduced power and pulled the control column with negative results, then forcibly pushed and pulled the control column, which freed the elevator control. He maneuvered the airplane for an emergency water landing. Postaccident visual examination of the airplane revealed that the left horizontal stabilizer was displaced down about 12 degrees from the normally installed position. Further examination revealed that an attachment ear for the left horizontal stabilizer fitting beam had failed due to fatigue in an area of fretting wear. Fretting wear was also detected on the adjacent angle/top beam. For comparison, the right fitting/beam and angle/top beam were removed and examined. Fretting wear was detected on both components. A small crack was also detected on an attachment for the right fitting/beam, which had originated from fretting wear associated from the respective angle/top beam. An air worthiness directive (AD 98-10-12), effective 6/8/98, was issued to inspect the affected aircraft, to ensure proper clearance, and to correct if fretting, cracking, or corrosion were found.
Probable Cause: inadequate clearance and fretting wear of the fitting/beam attachment to the angle/top beam, due to inadequate design, which resulted in fatigue and subsequent failure of the fitting/beam attachment ear.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | MIA98LA078 |
Status: | Investigation completed |
Duration: | 11 months |
Download report: | Final report |
|
Sources:
NTSB MIA98LA078
History of this aircraft
Other occurrences involving this aircraft
14 August 2020 |
N2994P |
Private |
0 |
North Palm Beach County Airport (F45), FL |
|
sub |
Inflight smoke |
Revision history:
Date/time | Contributor | Updates |
11-Mar-2024 19:04 |
ASN Update Bot |
Added |
The Aviation Safety Network is an exclusive service provided by:
CONNECT WITH US:
©2024 Flight Safety Foundation