Improper traffic pattern procedure results in landing procedure overshot. Runway excursion.

Attributes
ACN	279912
Time
Date	199408
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : 1or4
State Reference	OR
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing other
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Sail Plane
Operating Under FAR Part	Part 91
Flight Phase	cruise other descent : approach other
Route In Use	approach : visual
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 44 flight time total : 2400 flight time type : 1600
ASRS Report	279912
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	non adherence : far non adherence : published procedure other anomaly other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

As I approached the airfield, there was a glider in at a left downwind position, but still circling (making 360 degree turns). I entered the pattern on a left base. Well ahead of the glider. As I turned final the glider turned a short or close in left base. I decided to land along or at the far end of the airstrip to make sure there would be room for the glider to land behind me. I touched down mid-field, the plane floated in ground effect for some time. When the plane was on rollout I found the braking action very poor. (The field surface is dry grass). I was unable to stop the aircraft and slide off the end of the runway, stopping in the adjacent field. There was no injury, no property damage, and no substantial damage to the aircraft. In hindsight, I should have gone around as soon as the glider turned base or made a more standard pattern entry in the first place.

Original NASA ASRS Text

Title: IMPROPER TFC PATTERN PROC RESULTS IN LNDG PROC OVERSHOT. RWY EXCURSION.

Narrative: AS I APCHED THE AIRFIELD, THERE WAS A GLIDER IN AT A L DOWNWIND POS, BUT STILL CIRCLING (MAKING 360 DEG TURNS). I ENTERED THE PATTERN ON A L BASE. WELL AHEAD OF THE GLIDER. AS I TURNED FINAL THE GLIDER TURNED A SHORT OR CLOSE IN L BASE. I DECIDED TO LAND ALONG OR AT THE FAR END OF THE AIRSTRIP TO MAKE SURE THERE WOULD BE ROOM FOR THE GLIDER TO LAND BEHIND ME. I TOUCHED DOWN MID-FIELD, THE PLANE FLOATED IN GROUND EFFECT FOR SOME TIME. WHEN THE PLANE WAS ON ROLLOUT I FOUND THE BRAKING ACTION VERY POOR. (THE FIELD SURFACE IS DRY GRASS). I WAS UNABLE TO STOP THE ACFT AND SLIDE OFF THE END OF THE RWY, STOPPING IN THE ADJACENT FIELD. THERE WAS NO INJURY, NO PROPERTY DAMAGE, AND NO SUBSTANTIAL DAMAGE TO THE ACFT. IN HINDSIGHT, I SHOULD HAVE GONE AROUND AS SOON AS THE GLIDER TURNED BASE OR MADE A MORE STANDARD PATTERN ENTRY IN THE FIRST PLACE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.