A DC10-10 in climb at 14000 ft advised departure control of return to the field due to reported fumes in the cabin caused by the APU leaking oil into the pneumatic ducting when shut down.

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Attributes
ACN	422632
Time
Date	199812
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : lax
State Reference	CA
Altitude	msl bound lower : 11000 msl bound upper : 14000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Flight Phase	other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 260 flight time total : 20000 flight time type : 3000
ASRS Report	422632
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 17500 flight time type : 2000
ASRS Report	422718
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other other : unspecified
Resolutory Action	flight crew : declared emergency other
Consequence	Other

Narrative:

Departed lax for hnl. Climbing through 11000 ft, flight attendant reported strong fumes in cabin. Dumped fuel (one dump valve failed, increasing dump time). Returned to lax. Possible overweight landing, no emergency declared, no fire equipment requested, although equipment was out at the runway. Callback conversation with reporter revealed the following information: the reporter stated the aircraft was a DC10-10 and the direct cause of the fumes was the APU when shut down, leaked oil into the pneumatic ducts. The reporter said when engine pneumatics were turned on for air conditioning, the oil was ingested into the packs. Supplemental information from acn 422718: flight engineer left cockpit to check in cabin and returned immediately to report very strong odor, but with no smoke visible at the moment. The timing of the dump and expedience of the problems led me to land at what appeared to be approximately gross landing weight. Extenuating problems led to possible slight overweight landing.

Original NASA ASRS Text

Title: A DC10-10 IN CLB AT 14000 FT ADVISED DEP CTL OF RETURN TO THE FIELD DUE TO RPTED FUMES IN THE CABIN CAUSED BY THE APU LEAKING OIL INTO THE PNEUMATIC DUCTING WHEN SHUT DOWN.

Narrative: DEPARTED LAX FOR HNL. CLBING THROUGH 11000 FT, FLT ATTENDANT RPTED STRONG FUMES IN CABIN. DUMPED FUEL (ONE DUMP VALVE FAILED, INCREASING DUMP TIME). RETURNED TO LAX. POSSIBLE OVERWT LNDG, NO EMER DECLARED, NO FIRE EQUIP REQUESTED, ALTHOUGH EQUIP WAS OUT AT THE RWY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT WAS A DC10-10 AND THE DIRECT CAUSE OF THE FUMES WAS THE APU WHEN SHUT DOWN, LEAKED OIL INTO THE PNEUMATIC DUCTS. THE RPTR SAID WHEN ENG PNEUMATICS WERE TURNED ON FOR AIR CONDITIONING, THE OIL WAS INGESTED INTO THE PACKS. SUPPLEMENTAL INFO FROM ACN 422718: FE LEFT COCKPIT TO CHK IN CABIN AND RETURNED IMMEDIATELY TO RPT VERY STRONG ODOR, BUT WITH NO SMOKE VISIBLE AT THE MOMENT. THE TIMING OF THE DUMP AND EXPEDIENCE OF THE PROBS LED ME TO LAND AT WHAT APPEARED TO BE APPROX GROSS LNDG WT. EXTENUATING PROBS LED TO POSSIBLE SLIGHT OVERWT 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.