A DC9 crew during climb out, received a report of smoke in cabin.

Attributes
ACN	499700
Time
Date	200101
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dtw.airport
State Reference	MI
Altitude	msl single value : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d21.tracon
Operator	common carrier : air carrier
Make Model Name	DC-9 10
Operating Under FAR Part	Part 121
Flight Phase	descent : vacating altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier government : faa
Function	controller : departure flight crew : captain oversight : pic
Qualification	controller : radar pilot : atp
Experience	flight time last 90 days : 85 flight time total : 6500 flight time type : 150
ASRS Report	499700
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed as precaution flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Ambiguous

Narrative:

Climbing out of 8000 ft, flight attendants notified cockpit of smoke in cabin. Lavatory smoke detector was sounding. After looking back through cabin, made decision to return to dtw. Flight attendants checked aircraft left lavatory for fire, no fire noticed. As a precaution, put bottle of water in waste basket. Also, they pulled circuit breakers in galley. Emergency return to airport with crash fire rescue equipment standing by. Overweight landing made at 84000 pounds with a smooth touchdown. Cabin was clear of smoke on landing. No further actions were required.

Original NASA ASRS Text

Title: A DC9 CREW DURING CLBOUT, RECEIVED A RPT OF SMOKE IN CABIN.

Narrative: CLBING OUT OF 8000 FT, FLT ATTENDANTS NOTIFIED COCKPIT OF SMOKE IN CABIN. LAVATORY SMOKE DETECTOR WAS SOUNDING. AFTER LOOKING BACK THROUGH CABIN, MADE DECISION TO RETURN TO DTW. FLT ATTENDANTS CHKED ACFT L LAVATORY FOR FIRE, NO FIRE NOTICED. AS A PRECAUTION, PUT BOTTLE OF WATER IN WASTE BASKET. ALSO, THEY PULLED CIRCUIT BREAKERS IN GALLEY. EMER RETURN TO ARPT WITH CFR STANDING BY. OVERWT LNDG MADE AT 84000 LBS WITH A SMOOTH TOUCHDOWN. CABIN WAS CLR OF SMOKE ON LNDG. NO FURTHER ACTIONS WERE REQUIRED.

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.