ASN Wikibase Occurrence # 305260
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 18 September 2021 |
| Time: | 08:24 LT |
| Type: | Swearingen SX-300 |
| Owner/operator: | Private |
| Registration: | N5SX |
| MSN: | FYP-040 |
| Year of manufacture: | 1996 |
| Total airframe hrs: | 1697 hours |
| Engine model: | Lycoming IO-540 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Buckeye, Arizona -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Gila Bend, AZ (E63) |
| Litchfield Park Airport, AZ (KGEU) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot departed uneventfully, leveled the airplane at 1,000 ft above ground level, and set the engine power to 2,500 rpm. He then initiated a climb, during which the engine power increased to 3,200 rpm and the engine became 'unresponsive to input” just before it lost power. The pilot initiated a forced landing, during which the pilot sustained minor injuries and the airplane sustained substantial damage.
A postaccident examination of the engine revealed the left magneto flange was securely clamped at the mounting pad; however, the flange was detached from the magneto. The three screw holes where the flange and magneto should have attached exhibited severe elongation and deformation, which was indicative of a loss of torque and subsequent prolonged inability to maintain proper mating of the magneto flange and housing. The three attachment screws were not recovered.
The condition observed during postaccident examination likely existed for an extended time as evidenced by fretting and wear signatures of the housing components. Internally, the magneto components become misaligned to such a degree that proper magneto internal timing and the ability to operate within the manufacturer's specification were affected, resulting in the total loss of engine power.
Probable Cause: The total loss of engine power due to the failure of the left magneto.
Accident investigation:
 |
|
Sources:
NTSB WPR21LA357
Location
Revision history:
| Date/time | Contributor | Updates |
|---|
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation