ASN Wikibase Occurrence # 134117
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: | Sunday 2 March 1997 |
Time: | 17:50 |
Type: | Beechcraft J35 Bonanza |
Owner/operator: | Rafael L. Valenzuela |
Registration: | N39W |
MSN: | D-5353 |
Total airframe hrs: | 4435 hours |
Fatalities: | Fatalities: 0 / Occupants: 2 |
Aircraft damage: | Destroyed |
Category: | Accident |
Location: | Morristown, AZ -
United States of America
|
Phase: | En route |
Nature: | Private |
Departure airport: | IFP |
Destination airport: | DVT |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:On March 2, 1997, about 1750 hours mountain standard time, a Beech J35, N39W, was substantially damaged during a forced landing at Morristown, Arizona. The pilot received minor injuries and the passenger received serious injuries. Visual meteorological conditions prevailed for the personal cross-country flight and no flight plan was filed.
The pilot reported that while in cruise flight he felt a vibration and immediately made a power change without affect. He further reduced the engine rpm from 2,300 to 2,100, the airplane vibrated hard for a split second and then smoothed out. At that point, the propeller separated from the engine with part of the crankshaft. The failure occurred over remote desert terrain and the propeller was not recovered.
ENGINE INFORMATION
According to the engine logbook, the engine had been overhauled on April 11, 1989, at 1,819 total hours. At the time of the accident, the engine had accumulated about 937 hours since the overhaul.
Postaccident metallurgical examination of the crankshaft revealed that it had failed approximately 1.7 inches forward of the crankshaft oil seal. From this fatigue cracking origin, it propagated at a 45-degree angle to the axis of the crankshaft forward and aft. The origin was located inside the crankshaft bore at two corrosion pits.
PROBABLE CAUSE:failure of the crankshaft due to improper inspection/overhaul procedures.
Sources:
NTSB id 20001208X07570
Revision history:
Date/time | Contributor | Updates |
21-Dec-2016 19:26 |
ASN Update Bot |
Updated [Time, Damage, Category, Investigating agency] |
The Aviation Safety Network is an exclusive service provided by:
CONNECT WITH US:
©2024 Flight Safety Foundation