MD88 has high oil temperature when fuel heat stuck in the on position.

Attributes
ACN	451372
Time
Date	199909
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cos.airport
State Reference	CO
Altitude	msl single value : 15000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv.artcc
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : commercial pilot : atp pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 170 flight time total : 8000 flight time type : 1000
ASRS Report	451372
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : landed as precaution flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

First officer flying, climbing through approximately 15000 ft on departure. Right engine oil temperature amber caution light came on with oil temperature approximately 136 degrees C. Then noticed right engine fuel heat was on. Did procedures, unable to gain control of fuel heat valve. Maintained oil temperature in caution range or slightly below by keeping throttle advanced on right engine. Returned for uneventful approach and landing. Fire trucks called out as a precaution. On short final, noticed fuel heat had returned to normal (closed) and oil temperature stayed in normal range. I believe highly experienced first officer (flew military C9's and once had same malfunction) and excellent crew coordination kept this from developing into an in-flight engine shutdown emergency.

Original NASA ASRS Text

Title: MD88 HAS HIGH OIL TEMP WHEN FUEL HEAT STUCK IN THE ON POS.

Narrative: FO FLYING, CLBING THROUGH APPROX 15000 FT ON DEP. R ENG OIL TEMP AMBER CAUTION LIGHT CAME ON WITH OIL TEMP APPROX 136 DEGS C. THEN NOTICED R ENG FUEL HEAT WAS ON. DID PROCS, UNABLE TO GAIN CTL OF FUEL HEAT VALVE. MAINTAINED OIL TEMP IN CAUTION RANGE OR SLIGHTLY BELOW BY KEEPING THROTTLE ADVANCED ON R ENG. RETURNED FOR UNEVENTFUL APCH AND LNDG. FIRE TRUCKS CALLED OUT AS A PRECAUTION. ON SHORT FINAL, NOTICED FUEL HEAT HAD RETURNED TO NORMAL (CLOSED) AND OIL TEMP STAYED IN NORMAL RANGE. I BELIEVE HIGHLY EXPERIENCED FO (FLEW MIL C9'S AND ONCE HAD SAME MALFUNCTION) AND EXCELLENT CREW COORD KEPT THIS FROM DEVELOPING INTO AN INFLT ENG SHUTDOWN EMER.

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.