Roberts Field Airport
Aircraft Accident/Incident Report

Redmond, Oregon 97756
Sunday, August 1, 2004 16:47 PDT

NTSB Narrative Summary Released at Completion of Accident

On landing, just as the airplane touched down, the landing gear collapsed resulting in substantial damage to the airframe. The pilot reported that he lowered the landing gear after entering the downwind for the landing runway. He stated that after lowering the gear, the "down and locked" indicator light illuminated confirming the gear was down. He further stated the landing flare was normal, however the airplane continued to settle, eventually landing with the gear in the up position. Post accident evaluation of the landing gear system, to include a gear swing, revealed no anomalies that would have prevented the landing gear from fully extending to the down and locked position.

NTSB Probable Cause Narrative

Unknown malfunction of the landing gear system for undetermined reasons that resulted in a gear collapse during landing.

Event Information

Type of Event Accident
Event Date 8/1/2004
Event Day of the Week Sunday
Time of Event 1647
Event Time Zone Pacific Daylight Time
Event City Redmond
Event State OREGON
Event Country --
Zipcode of the event site 97756
Event Date Year 2004
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 441514N
Event Location Longitude 1210859W
Event Location Airport ROBERTS FIELD
Event Location Nearest Airport ID RDM
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 3100
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1556 Pacific Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID KRDM
Elevation of weather observation facility 3100
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 32
Dew Point at event time (in degress fahrenheit) 6
Wind Direction (degrees magnetic) 340
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.82
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 17635
NTSB Notification Source FAA-ROC
NTSB Notification Date Aug 1 2004 12:00AM
NTSB Notification Time 1651
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Apr 28 2005 2:59PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Portland, Oregon

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9394P
NTSB Number SEA04LA153
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-24-260
Aircraft Series Identifier --
Aircraft Serial Number 24-4897
Certified Max Gross Weight 3200
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 Mar 24 2004 12:00AM
Airframe hours since last inspection 30
Airframe Hours 4244
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Andreas G. Nager
Aircraft Owner Street Address --
Aircraft Owner City Bend
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 97702
Operator is an individual? No
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? --
Certified for Part 133 or 137 Operation --
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 TIW
Departure City TACOMA
Departure State WA
Departure Country USA
Departure Time 1530
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code RDM
Destination City REDMOND
Destination State OR
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record --
User who most recently changed record --
Since inspection or accident Last Inspection
Event Location Runway Number and Location 28
Runway Length 7006
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --