ASN Wikibase Occurrence # 353016
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: | Thursday 15 July 1999 |
| Time: | 13:55 LT |
| Type: |  Piper PA-46-310P Malibu |
| Owner/operator: | Private |
| Registration: | N121GP |
| MSN: | 46-8508086 |
| Year of manufacture: | 1985 |
| Total airframe hrs: | 3009 hours |
| Engine model: | Continental TSIO-520 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Belmar, NJ -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Mt Holly, NJ (KVAY) |
| Boston, MA (KBOS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
After takeoff, when the airplane was climbing through 12,000 feet, heavy black smoke appeared in the cockpit. The pilot declared an emergency, and successfully landed the airplane at a nearby airport. Post-flight inspection revealed that the left side turbocharger clamp had separated through the tensioning band, at the root of a spot weld. Subsequent microscopic examination in the area around the rim of the spot weld revealed a crystalline appearance. An analysis of a spot weld from the right turbocharger clamp revealed small recrystallized austenitic grains. The airplane's engine was installed in March 1991, and the turbochargers were replaced in June 1999. During the replacement, the turbocharger clamps were reused. The only requirement to change the turbocharger clamps was a mandatory replacement at engine overhaul.
Probable Cause: The failure of the turbocharger clamp, resulting from improper welding settings during manufacture.
Accident investigation:
 |
|
Sources:
NTSB NYC99IA175
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Mar-2024 09:32 | ASN Update Bot | Added |
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