Aircraft Accident/Incident Report

Nucla, Colorado 81424
Saturday, January 18, 1992 13:45 MST

NTSB Narrative Summary Released at Completion of Accident

FLUTTER OF THE EMPENNAGE OCCURRED DURING A CRUISE-DESCENT IN SMOOTH AIR. THIS RESULTED IN CRACKS IN ALL 4 CORNERS OF THE AFT FUSELAGE BULKHEAD AND WRINKLING OF THE FUSELAGE SKIN IN THE AREA OF THE RUDDERVATOR ATTACHMENT POINTS. THE LEFT RUDDERVATOR HAD BEEN INSTALLED ON THE AIRPLANE DURING AN ANNUAL INSPECTION SEVERAL WEEKS BEFORE THE ACCIDENT, AFTER IT WAS REMOVED TO HAVE NEW SKIN INSTALLED. THE SURFACE WAS REPAINTED, AND THE PAINT THICKNESS EXCEEDED THE MANUFACTURER'S FACTORY ACCEPTANCE CRITERIA. POST-ACCIDENT TESTING DISCLOSED THE STATIC BALANCE OF BOTH RUDDERVATORS TO BE EXCESSIVELY TAIL HEAVY. NO LEAD BALANCING WASHERS WERE FOUND IN EITHER RUDDERVATOR COUNTERWEIGHT HOUSING.

NTSB Probable Cause Narrative

IMPROPER STATIC BALANCE OF THE RUDDERVATORS FOLLOWING REBUILDING/REPAINTING, WHICH RESULTED IN EMPENNAGE FLUTTER.

Event Information

Type of Event Accident
Event Date 1/18/1992
Event Day of the Week Saturday
Time of Event 1345
Event Time Zone Mountain Standard Time
Event City NUCLA
Event State COLORADO
Event Country --
Zipcode of the event site 81424
Event Date Year 1992
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Witness
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 50
Air Temperature at event time (in degrees celsius) -3
Dew Point at event time (in degress fahrenheit) -8
Wind Direction (degrees magnetic) 140
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 4669
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 146
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 46090
Date of most recent change to record Dec 11 2000 2:42PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3342V
NTSB Number DEN92FA028
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BEECH
Aircraft Model 35
Aircraft Series Identifier 35
Aircraft Serial Number D-805
Certified Max Gross Weight 2550
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 10 1992 12:00AM
Airframe hours since last inspection 6
Airframe Hours 4081
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name RICHARDS, JAMES D.
Aircraft Owner Street Address P.O. BOX 584 27696 DD ROAD
Aircraft Owner City NUCLA
Aircraft Owner State CO
Aircraft Owner Country
Aircraft Owner Zipcode 81424
Operator is an individual? --
Operator Name RICHARDS, JAMES D.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address P.O. BOX 584 27696 DD ROAD
Operator City NUCLA
Operator State CO
Operator Country
Operator Zip code 81424
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 6V6
Departure City NUCLA
Departure State CO
Departure Country
Departure Time 1200
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code APA
Destination City ENGLEWOOD
Destination State CO
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --