<< >> NASA ASRS Report 94134, September 1988

GA small aircraft with pilot on first extended cross country training flight lost engine power and makes emergency landing at military airport.

Attributes
ACN	94134
Time
Date	198809
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : riv
State Reference	CA
Altitude	msl bound lower : 5500 msl bound upper : 5500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ont tower : mnl
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Route In Use	approach : visual
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : student
Experience	flight time last 90 days : 20 flight time total : 80
ASRS Report	94134
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	94134
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	controller : provided flight assist flight crew : declared emergency none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

I was flying my 300 mi 3-LEG cross country from torrance to blythe to thermal to torrance. While on the first leg (from torrance to blythe) eastbound near riverside, ca, the engine started to fluctuate +/- 300 RPM from cruise setting. I could not maintain full power with full throttle and full rich mixture and began to lose speed and altitude. I also noted a drop in oil pressure to minimum in green band. I called ont approach control for clearance to land at nearest suitable airport. Ont approach then vectored me to land at march AFB with clearance from the tower. Mechanical inspection of engine revealed fouled leaded spark plugs.

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Original NASA ASRS Text

Title: GA SMA WITH PLT ON FIRST EXTENDED CROSS COUNTRY TRAINING FLT LOST ENGINE POWER AND MAKES EMERGENCY LNDG AT MIL ARPT.

Narrative: I WAS FLYING MY 300 MI 3-LEG CROSS COUNTRY FROM TORRANCE TO BLYTHE TO THERMAL TO TORRANCE. WHILE ON THE FIRST LEG (FROM TORRANCE TO BLYTHE) EBND NEAR RIVERSIDE, CA, THE ENG STARTED TO FLUCTUATE +/- 300 RPM FROM CRUISE SETTING. I COULD NOT MAINTAIN FULL PWR WITH FULL THROTTLE AND FULL RICH MIXTURE AND BEGAN TO LOSE SPD AND ALT. I ALSO NOTED A DROP IN OIL PRESSURE TO MINIMUM IN GREEN BAND. I CALLED ONT APCH CTL FOR CLRNC TO LAND AT NEAREST SUITABLE ARPT. ONT APCH THEN VECTORED ME TO LAND AT MARCH AFB WITH CLRNC FROM THE TWR. MECHANICAL INSPECTION OF ENG REVEALED FOULED LEADED SPARK PLUGS.

Data retrieved from NASA's ASRS site as of August 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.