Pierce County -Thun Field Airport
Aircraft Accident/Incident Report

Puyallup, Washington 98374
Saturday, July 5, 2014 15:13 PDT

NTSB Narrative Summary Released at Completion of Accident

On July 5, 2014, at 1513 Pacific daylight time, a Globe Swift GC-1B, N3773K, made a forced landing into a field following a total loss of engine power during the approach to Pierce County Airport/Thun Field, Puyallup, Washington. The pilot, who was the registered owner, was operating the airplane under the provisions of 14 Code of Federal Regulations (CFR) Part 91. The private pilot, the sole occupant, was not injured; the airplane sustained substantial damage. The local flight departed from Vashon Municipal Airport, Vashon, Washington about 1455 with a planned destination of Puyallup. Visual meteorological conditions prevailed and no flight plan had been filed. In a written statement the pilot reported that while on the downwind leg of the traffic pattern for runway 34, he configured the airplane for landing which included lowering the landing gear. He extended the downwind leg to allow for adequate spacing of other traffic and lowered the wing flaps as he turned onto the base leg. During the turn, the engine made a loud "bang" and began to experience a partial loss of power. The JPI engine monitor installed was indicating that the exhaust gas temperatures (EGTs) on that engines right side (cylinders number 1,3, and 5) were almost non-existent. The oil and fuel pressure gauges remained in the green, showing normal indications. The pilot further stated that gray smoke began emanating through the right side of the cockpit although he couldn't detect the source of the fire or any flames. He activated the fuel boost pump to the "low boost" setting and the engine began operating worse. Thereafter he turned off the boost pump and the engine appeared to temporarily gain power though the JPI now showed low EGT indications for the left cylinders. The airplane continued to descend and collided with an embankment that was located on the airport property prior to the runway. The airplane bounced and slid to a stop. As a result of the impact, the airplane incurred structural damage to the left wing. A preliminary engine examination revealed that the number 3 cylinder's piston was not intact. The cylinder was retained for further examination.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 7/5/2014
Event Day of the Week Saturday
Time of Event 1513
Event Time Zone Pacific Daylight Time
Event City Puyallup
Event State WASHINGTON
Event Country --
Zipcode of the event site 98374
Event Date Year 2014
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 470614N
Event Location Longitude 1221714W
Event Location Airport Pierce County -Thun Field
Event Location Nearest Airport ID PLU
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 --
Investigator's weather source Weather Observation Facility
Time of the weather observation 2215 Coordinated Universal Time? Same as GMT
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID PLU
Elevation of weather observation facility 538
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation UTC
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 2400
Sky/Lowest/Cloud Conditions Scattered
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) 24
Dew Point at event time (in degress fahrenheit) 18
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.1
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report METAR KPLU 072215Z AUTO 00000KT 10SM SCT024 24/18
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) --
NTSB Notification Source FAA Comm Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jul 23 2014 2:53PM
User who most recently changed record kelz
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3773K
NTSB Number WPR14LA284
Missing Aircraft Indicator --
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 GLOBE
Aircraft Model GC 1B
Aircraft Series Identifier NO SERIES
Aircraft Serial Number 1466
Certified Max Gross Weight 1970
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats 1
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Oct 20 2013 12:00AM
Airframe hours since last inspection --
Airframe Hours 3432
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name PERLA GUIDO F
Aircraft Owner Street Address --
Aircraft Owner City VASHON
Aircraft Owner State WA
Aircraft Owner Country USA
Aircraft Owner Zipcode 980706322
Operator is an individual? Yes
Operator Name PERLA GUIDO F
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City VASHON
Operator State WA
Operator Country USA
Operator Zip code 980706322
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 2S1
Departure City Vashon
Departure State WA
Departure Country USA
Departure Time 1455
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code PLU
Destination City Puyallup
Destination State WA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 23 2014 4:20PM
User who most recently changed record stam
Since inspection or accident Last Inspection
Event Location Runway Number and Location 34
Runway Length 3650
Runway Width 60
Sight Seeing flight --
Air Medical Flight --
Medical Flight --