Pierce Co-Thun Field Airport
Aircraft Accident/Incident Report

Puyallup, Washington 98375
Friday, November 9, 2001 20:15 PST

NTSB Narrative Summary Released at Completion of Accident

The pilots reported that while the accident aircraft was on downwind, a light helicopter (believed to be a Robinson R22) entered final approach. The flight instructor reported that the helicopter cleared the active runway "about one-half to one-quarter mile before our touchdown." The trainee stated that after clearing the runway, the helicopter moved right to the parallel taxiway, approximately 180 feet from the runway. The pilots reported that approximately 200 to 300 feet past the runway threshold, the aircraft suddenly rolled right, yawed right, and sank, and that despite control inputs to attempt to counter these motions, the aircraft touched down right-wing-low in the grass adjacent to the runway. The pilots elected to continue the landing rollout in the grass. During the landing rollout, the aircraft's nose gear failed. The instructor indicated that no mechanical malfunction or failure was involved in the accident. An R22 on the parallel taxiway at the north end of the airport is approximately 7 main rotor diameters from the runway, well outside the three main rotor diameters specified by the FAA Aeronautical Information Manual (AIM) for rotor wash avoidance from a helicopter in a slow hover taxi or stationary hover. The accident aircraft's maximum gross weight is also approximately twice that of the R22. Dark night visual meteorological conditions, with calm winds, were reported by the flight instructor.

NTSB Probable Cause Narrative

The pilots' failure to maintain aircraft control on short final, resulting in a touchdown off of the prepared landing surface. A factor was grassy terrain encountered on the landing rollout.

Event Information

Type of Event Accident
Event Date 11/9/2001
Event Day of the Week Friday
Time of Event 2015
Event Time Zone Pacific Standard Time
Event City Puyallup
Event State WASHINGTON
Event Country --
Zipcode of the event site 98375
Event Date Year 2001
Event Date Month 11
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport Pierce Co-Thun Field
Event Location Nearest Airport ID 1S0
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 538
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Night/Dark
Lowest Ceiling Height 10000
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 6
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 12378
NTSB Notification Source FAA ROC
NTSB Notification Date Nov 28 2001 12:00AM
NTSB Notification Time 915
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Oct 24 2002 3:20PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Seattle (Renton), WA

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9466K
NTSB Number SEA02LA016
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-28R-200
Aircraft Series Identifier --
Aircraft Serial Number 7635244
Certified Max Gross Weight 2650
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 Jul 25 2001 12:00AM
Airframe hours since last inspection 76
Airframe Hours 5849
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Inn Keepers, America
Aircraft Owner Street Address 16715 Meridian East, Bldg. H
Aircraft Owner City Puyallup
Aircraft Owner State WA
Aircraft Owner Country USA
Aircraft Owner Zipcode 98375
Operator is an individual? No
Operator Name Spanaflight, Inc.
Operator Same as Owner? No
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 GHXA
Owner has at least one certificate --
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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code 1S0
Departure City Puyallup
Departure State WA
Departure Country USA
Departure Time 1750
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 1S0
Destination City Puyallup
Destination State WA
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record May 3 2002 5:41PM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location 16
Runway Length 3650
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --