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ASN Wikibase Occurrence # 36818
Last updated: 7 July 2019
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Date:15-NOV-1987
Time:12:27
Type:Silhouette image of generic M20P model; specific model in this crash may look slightly different
Mooney M20C
Owner/operator:Renato & Glenda Ricci
Registration: N6670R
C/n / msn: 2865
Fatalities:Fatalities: 4 / Occupants: 4
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Grand Canyon, AZ -   United States of America
Phase: Approach
Nature:Private
Departure airport:Sedona, AZ (SEZ)
Destination airport:Death Valley, CA (L06)
Investigating agency: NTSB
Narrative:
WHILE CRUISING EN ROUTE ALL ENGINE POWER WAS SUDDENLY LOST AND THE PLT ATTEMPTED AN EMERGENCY LDG AT THE GRAND CANYON ARPT. DURING THE GLIDE, THE ACFT CRASHED INTO AN OUTCROP OF ROCKS ON A STEEP CLIFF, 0.5 MI FROM THE END OF THE RWY. EXAM OF THE ENGINE REVEALED THAT ONE OF THE #3 CONNECTING ROD BOLT NUTS HAD BACKED OFF THE BOLT, AND OTHER NUT HAD BEEN PARTIALLY STRIPPED OFF ITS BOLT. THE ENGINE HAD BEEN OPERATED FOR 212 HRS SMOH. LAB EXAM OF THE BOLT/NUT INTERFACE INDICATED THAT THE NUTS HAD BEEN UNDERTORQUED WHEN THEY WERE LAST INSTALLED. CAUSE:

Sources:

NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X32541


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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