Pilot of small aircraft single engine aircraft lost power on extended downwind for landing at sbp. U...

Attributes
ACN	172420
Time
Date	199103
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sbp
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sbp
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Experience	flight time last 90 days : 150 flight time total : 15000 flight time type : 50
ASRS Report	172420
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical non adherence : clearance other anomaly other
Independent Detector	other other : unspecified cockpit
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

While on an extended base to final approach to sbp's runway 7, the engine lost power when I opened the throttle to adjust my glide path for landing. This was at about 900' AGL. I was unable to regain power and made a landing in a pasture about 1 mi west of the airport. I had been asked by tower to extend my downwind leg to accommodate an arrival and a departure of commuter airliners on runway 11. This extension put me a little too far from the runway to land on the airport. When I attempted to add power on final approach and got no response I turned about 20 degrees to the right and lined up with the pasture that I landed in. The landing was smooth with no damage to the aircraft or any property on the ground. An inspection by myself and another a&P mechanic revealed no water in the fuel, and 8 gals of fuel in the tank, and no other mechanical problems. After about 2 hours I started the engine and a run-up revealed normal engine operation. Our conclusion was carburetor ice. I feel that I just waited too long before pulling on the carburetor heat before landing.

Original NASA ASRS Text

Title: PLT OF SMA SINGLE ENGINE ACFT LOST POWER ON EXTENDED DOWNWIND FOR LNDG AT SBP. UNABLE TO MAKE THE ARPT. LANDED OFF ARPT IN PASTURE. NO DAMAGE, NO INJURIES.

Narrative: WHILE ON AN EXTENDED BASE TO FINAL APCH TO SBP'S RWY 7, THE ENG LOST PWR WHEN I OPENED THE THROTTLE TO ADJUST MY GLIDE PATH FOR LNDG. THIS WAS AT ABOUT 900' AGL. I WAS UNABLE TO REGAIN PWR AND MADE A LNDG IN A PASTURE ABOUT 1 MI W OF THE ARPT. I HAD BEEN ASKED BY TWR TO EXTEND MY DOWNWIND LEG TO ACCOMMODATE AN ARR AND A DEP OF COMMUTER AIRLINERS ON RWY 11. THIS EXTENSION PUT ME A LITTLE TOO FAR FROM THE RWY TO LAND ON THE ARPT. WHEN I ATTEMPTED TO ADD PWR ON FINAL APCH AND GOT NO RESPONSE I TURNED ABOUT 20 DEGS TO THE RIGHT AND LINED UP WITH THE PASTURE THAT I LANDED IN. THE LNDG WAS SMOOTH WITH NO DAMAGE TO THE ACFT OR ANY PROPERTY ON THE GND. AN INSPECTION BY MYSELF AND ANOTHER A&P MECH REVEALED NO WATER IN THE FUEL, AND 8 GALS OF FUEL IN THE TANK, AND NO OTHER MECHANICAL PROBS. AFTER ABOUT 2 HRS I STARTED THE ENG AND A RUN-UP REVEALED NORMAL ENG OPERATION. OUR CONCLUSION WAS CARB ICE. I FEEL THAT I JUST WAITED TOO LONG BEFORE PULLING ON THE CARB HEAT BEFORE LNDG.

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.

Pilot of small aircraft single engine aircraft lost power on extended downwind for landing at sbp. Unable to make the airport. Landed off airport in pasture. No damage, no injuries.