Aircraft Accident/Incident Report

Ashland, Oregon 97520
Saturday, March 26, 1988 20:30 PST

NTSB Narrative Summary Released at Completion of Accident

DURING A DARK NIGHT VFR FLIGHT, THE ACFT ENCOUNTERED A SEVERE DOWNDRAFT AND INSTRUMENT METEOROLOGICAL CONDITIONS. WITH FULL POWER THE ACFT DESCENDED, STRIKING TREES BEFORE IT STRUCK THE GROUND. DURING THE PILOT'S PREFLIGHT BRIEFING AND IN-FLIGHT BRIEFING HE WAS TOLD THAT FLIGHT PRECAUTIONS WERE PRESENT BECAUSE OF ICING, TURBULENCE, MOUNTAIN OBSCURATIONS, AND IFR CONDITIONS. IN A POST ACC STATEMENT THE PLT SAID HE WAS DESCENDING FROM 8000 FT MSL TO LAND AT MEDFORD OR FOR REFUELING WHEN HE ENCOUNTERED A STRONG DOWNDRAFT. THIS DESCENT CONTINUED UNTIL ABOUT 2000 FT AGL AT AN AIRSPEED OF 50 MPH. DUE TO LOW AIRSPEED AND TURBULENCE THE PLT DECIDED AGAINST TRYING A 180 DEGREE TURN. IMC WX CONDITIONS WERE ENCOUNTERED IN THE FORM OF FOG AND SNOW. THE PLT TURNED FROM 310 DEGREES TO 300 DEGREES AND BEGAN A CLIMB. AT APRX 6100 FT MSL ANOTHER DOWNDRAFT WAS ENCOUNTERED AND THE ACFT DESCENDED AT ABOUT 60 MPH UNTIL TREES WAS CONTACTED AT APRX 5100 FT. THE WINGS AND TOP OF THE ACFT WERE TORN OFF BUT THE 2 OCCUPANTS SURVIVED.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 3/26/1988
Event Day of the Week Saturday
Time of Event 2030
Event Time Zone Pacific Standard Time
Event City ASHLAND
Event State OREGON
Event Country --
Zipcode of the event site 97520
Event Date Year 1988
Event Date Month 3
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 0
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 Night/Dark
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Partial Obscuration
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) -1
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 330
Variable Wind Indicator Unknown
Wind Speed (knots) 30
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 40
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Moderate
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 2
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 171
NTSB Notification Source --
NTSB Notification Date Mar 26 1988 12:00AM
NTSB Notification Time 2300
Fiche Number and/or location -used to find docket information 35704
Date of most recent change to record Dec 13 2000 11:38AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2958D
NTSB Number SEA88LA067
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 170
Aircraft Series Identifier 170
Aircraft Serial Number 20750
Certified Max Gross Weight 2200
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 Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 15 1987 12:00AM
Airframe hours since last inspection 30
Airframe Hours 4111
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name MARK D. MUELLER
Aircraft Owner Street Address 6260 NEWT DRIVE
Aircraft Owner City ANCHORAGE
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
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 SAC
Departure City SACRAMENTO
Departure State CA
Departure Country
Departure Time 725
Departure Time Zone PST
Destination Same as Local Flt --
Destination Airport Code MFR
Destination City MEDFORD
Destination State OR
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --