Aircraft Accident/Incident Report

Troutdale, Oregon 97060
Tuesady, September 29, 1992 15:10 PDT

NTSB Narrative Summary Released at Completion of Accident

WHILE IN CRUISE THE ENGINE BEGAN RUNNING ROUGH AND VIBRATING. THE PILOT, UNABLE TO MAINTAIN ALTITUDE DUE TO THE POWER LOSS, EXECUTED A FORCED LANDING ONTO AN UNEVEN FIELD DURING WHICH THE NOSE GEAR STRUT FOLDED AFT DUE TO OVERLOAD AND THE AIRCRAFT NOSED OVER. SUBSEQUENT DISASSEMBLY OF THE ENGINE REVEALED THAT THE NUMBER 3 CYLINDER EXHAUST VALVE HAD SEPARATED AT THE NECK JUST BENEATH THE BASE OF THE VALVE HEAD.

NTSB Probable Cause Narrative

SEPARATION OF THE NUMBER 3 CYLINDER EXHAUST VALVE HEAD AND OVERLOADING OF THE NOSE GEAR STRUT. A FACTOR CONTRIBUTING TO THE ACCIDENT WAS THE UNEVEN TERRAIN.

Event Information

Type of Event Accident
Event Date 9/29/1992
Event Day of the Week Tuesday
Time of Event 1510
Event Time Zone Pacific Daylight Time
Event City TROUTDALE
Event State OREGON
Event Country --
Zipcode of the event site 97060
Event Date Year 1992
Event Date Month 9
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 Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1446 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID TTD
Elevation of weather observation facility 35
Distance of event from weather observation facility (units?) 4
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 25000
Lowest Non-Ceiling Height 8000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 35
Air Temperature at event time (in degrees celsius) 23
Dew Point at event time (in degress fahrenheit) 7
Wind Direction (degrees magnetic) 80
Variable Wind Indicator Unknown
Wind Speed (knots) 17
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 26
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
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 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 2802
NTSB Notification Source --
NTSB Notification Date Sep 29 1992 12:00AM
NTSB Notification Time 1535
Fiche Number and/or location -used to find docket information 47587
Date of most recent change to record Dec 11 2000 3:19PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8274C
NTSB Number SEA92LA218
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 PIPER
Aircraft Model PA-22-135
Aircraft Series Identifier PA-22-135
Aircraft Serial Number 22-2349
Certified Max Gross Weight 1950
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 24 1992 12:00AM
Airframe hours since last inspection 22
Airframe Hours 2573
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name MCBRIDE, EDWARD U.
Aircraft Owner Street Address 4500 NE 125TH PLACE, #21
Aircraft Owner City PORTLAND
Aircraft Owner State OR
Aircraft Owner Country
Aircraft Owner Zipcode 97230
Operator is an individual? --
Operator Name MCBRIDE, EDWARD U.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 4500 NE 125TH PLACE, #21
Operator City PORTLAND
Operator State OR
Operator Country
Operator Zip code 97230
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 59S
Departure City VANCOUVER
Departure State WA
Departure Country
Departure Time 1445
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code 59S
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
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 --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --