Accident Helio H-295 Super Courier N6493V, 04 Aug 1990
ASN logo
ASN Wikibase Occurrence # 40854
 
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:04-AUG-1990
Time:15:05
Type:Silhouette image of generic COUR model; specific model in this crash may look slightly different    
Helio H-295 Super Courier
Owner/operator:private
Registration: N6493V
MSN: 1458
Fatalities:Fatalities: 3 / Occupants: 3
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:40 mi SE of Bettles, AK -   United States of America
Phase: En route
Nature:Executive
Departure airport:Clear, AK (Z84)
Destination airport:Happy Valley, AK
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
THE PILOT HAD INDICATED TO BETTLES FSS THAT HE HAD LOST POWER AND THAT HE HAD A FIRE ON BOARD. THE WRECKAGE WAS SUBSEQUENTLY LOCATED 40 MILES SE OF BETTLES. ON-SITE EXAMINATION SHOWES THAT THE RIGHT WING, BOTH AILERONS, LEFT FLAP, RUDDER, VERTICAL FIN AND STABILATOR HAD ALL SEPARATED FROM THE AIRPLANE IN FLIGHT. TWO OF THE THREE VERTICAL FIN/STABILATOR-TO-FUSELAGE MOUNTS HAD FAILED IN OVERLOAD; THE THIRD MOUNT WAS RELATIVELY UNDAMAGED WITH THE BOLT MISSING AND VISIBLE ELONGATION OF THE BOLT HOLE. ENGINE EXAM REVEALED EXTENSIVE FIRE DAMAGE TO THE #5 CYLINDER, THE HEAD AREA HAVING BEEN COMPLETELY CONSUMED BY FIRE. THE ROD CAP AND ONE BOLT COULD NOT BE FOUND AT THE WRECKAGE SITE. FOUR MONTHS PRIOR TO THE ACCIDENT MAJOR REPAIRS WERE MADE TO THE AIRFRAME, THE ENGINE NOSE CASE WAS REMOVED AND OVERHAULED, AND THE PROPELLER WAS OVERHAULED. AIRCRAFT AND PILOT INVOLVED IN LANDING ACCIDENT ON 6/29/88 SUBSTANTIALLY DAMAGING THE AIRCRAFT. LYCOMING SB RECOMMENDS ENGINE TEARDOWN AFTER SUDDEN STOPPAGE; NO RECORD OF COMPLIANCE. CAUSE: THE FAILURE AND SEPARATION OF THE #5 CONNECTING ROD BOLT AND CAP WHICH RESULTED IN THE RUPTURE OF THE ENGINE HOUSING AND SUBSEQUENT ENGINE FIRE DUE TO OIL SPILLAGE, AND AN INADEQUATELY MOUNTED VERTICAL FIN/STABILATOR. A CONTRIBUTING FACTOR WAS THE INADEQUATE MAINTENANCE AND INSPECTION OF THE AIRCRAFT AFTER A PREVIOUS ACCIDENT.

Sources:

NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001212X23848


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
26-Nov-2010 13:26 TB Updated [Other fatalities, Location]
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

Corrections or additions? ... Edit this accident description

The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2023 Flight Safety Foundation

701 N. Fairfax St., Ste. 250
Alexandria, Virginia 22314
www.FlightSafety.org