<< >> NASA ASRS Report 271665, May 1994

Pilot of an atx small aircraft sel declared an emergency and was vectored to another nearby airport due to engine power loss.

Attributes
ACN	271665
Time
Date	199405
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : msp airport : d97
State Reference	MN
Altitude	msl bound lower : 4000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : msp artcc : zob
Operator	common carrier : air taxi
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 50 flight time total : 3000
ASRS Report	271665
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

After descent from 6000 to 4000 ft MSL I reset the power settings for straight and level. Almost instantly the aircraft began to vibrate. I executed emergency procedures, notified ATC of my intent to climb for better glide range. ATC vectored me to D97 (south st. Paul) and I made a normal approach to a safe landing. After inspection I discovered the #6 cylinder had cracked and oil was dispensing onto the ground. No evasive action was required and all preflight inspections revealed no abnormal conditions. Postflt inspection also revealed a broken aircraft belt. During descent egt temperatures revealed no unusual cooling and all 6 cylinders were within 300 degrees of each other.

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Original NASA ASRS Text

Title: PLT OF AN ATX SMA SEL DECLARED AN EMER AND WAS VECTORED TO ANOTHER NEARBY ARPT DUE TO ENG PWR LOSS.

Narrative: AFTER DSCNT FROM 6000 TO 4000 FT MSL I RESET THE PWR SETTINGS FOR STRAIGHT AND LEVEL. ALMOST INSTANTLY THE ACFT BEGAN TO VIBRATE. I EXECUTED EMER PROCS, NOTIFIED ATC OF MY INTENT TO CLB FOR BETTER GLIDE RANGE. ATC VECTORED ME TO D97 (S ST. PAUL) AND I MADE A NORMAL APCH TO A SAFE LNDG. AFTER INSPECTION I DISCOVERED THE #6 CYLINDER HAD CRACKED AND OIL WAS DISPENSING ONTO THE GND. NO EVASIVE ACTION WAS REQUIRED AND ALL PREFLT INSPECTIONS REVEALED NO ABNORMAL CONDITIONS. POSTFLT INSPECTION ALSO REVEALED A BROKEN ACFT BELT. DURING DSCNT EGT TEMPS REVEALED NO UNUSUAL COOLING AND ALL 6 CYLINDERS WERE WITHIN 300 DEGS OF EACH OTHER.

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.