Narrative:

Had a loud nose on climb out at level 10000 ft. The flight crew noticed a rapid loss of oil quantity to pressure and shut down #2 engine. On the ground at denver, engine cowling for #2 engine had come loose and the buffeting had created the oil loss. Cowling latches for forward cowl on #2 engine may not have been latched. At denver hangar, fuel heater and strainer assembly was severely damaged. I do not know the factors affecting the hangar crew for missing the latching of forward cowl before flight. I do have a suggestion that may prevent a cowling accident by changing the wording in the pre-departure checklist cdis in the last item listed exterior general it states: check for an obvious item that the flight crew might find on a walkaround (i.e., fluid leaks, tire pressure, etc.) to be changed to: check for any obvious items that the flight crew might find on walkaround (i.e., fluid leaks, tire pressure, etc, cowling latches). (On #2 engine check latches as viewed from aft left side).

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Original NASA ASRS Text

Title: WDB ENG COWLING COMES OPEN IN FLT CAUSING OIL LEAK AND FORCING ACFT TO RETURN LAND.

Narrative: HAD A LOUD NOSE ON CLBOUT AT LEVEL 10000 FT. THE FLC NOTICED A RAPID LOSS OF OIL QUANTITY TO PRESSURE AND SHUT DOWN #2 ENG. ON THE GND AT DENVER, ENG COWLING FOR #2 ENG HAD COME LOOSE AND THE BUFFETING HAD CREATED THE OIL LOSS. COWLING LATCHES FOR FORWARD COWL ON #2 ENG MAY NOT HAVE BEEN LATCHED. AT DENVER HANGAR, FUEL HEATER AND STRAINER ASSEMBLY WAS SEVERELY DAMAGED. I DO NOT KNOW THE FACTORS AFFECTING THE HANGAR CREW FOR MISSING THE LATCHING OF FORWARD COWL BEFORE FLT. I DO HAVE A SUGGESTION THAT MAY PREVENT A COWLING ACCIDENT BY CHANGING THE WORDING IN THE PRE-DEP CHKLIST CDIS IN THE LAST ITEM LISTED EXTERIOR GENERAL IT STATES: CHK FOR AN OBVIOUS ITEM THAT THE FLC MIGHT FIND ON A WALKAROUND (I.E., FLUID LEAKS, TIRE PRESSURE, ETC.) TO BE CHANGED TO: CHK FOR ANY OBVIOUS ITEMS THAT THE FLC MIGHT FIND ON WALKAROUND (I.E., FLUID LEAKS, TIRE PRESSURE, ETC, COWLING LATCHES). (ON #2 ENG CHK LATCHES AS VIEWED FROM AFT L SIDE).

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.