F100 purser found a white powdery substance on the lavatory floor.

Attributes
ACN	528700
Time
Date	200110
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc tower : dtw.tower
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	528700
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	other anomaly other
Independent Detector	other other : 3
Resolutory Action	controller : provided flight assist none taken : detected after the fact other
Supplementary
Problem Areas	Cabin Crew Human Performance Company Passenger Human Performance Environmental Factor Flight Crew Human Performance Maintenance Human Performance
Primary Problem	Ambiguous

Narrative:

Unknown substance discovery of aircraft. While in our descent for ZZZ, the #$1 flight attendant informed us that a white powdery substance was on the floor in the forward lavatory. I instructed her to cover it with a plastic bag, blankets, block the lavatory. I then informed ZZZ operations by radio of the problem. After landing at ZZZ, ground control parked us in a remote area and said that hazmat team was on the way. 2 hours later, they arrived and inspected the substance. It was determined that tic-tac breath mints had been dropped and stepped on. The hazmat crew chief then allowed us to taxi to our gate and deplane normally. The next morning, contract maintenance would not sign off logbook for substance idented, so after conferring with maintenance control, manager on duty, and ZZZ operations, I signed off the logbook with an information to maintenance under the general section of MEL.

Original NASA ASRS Text

Title: F100 PURSER FOUND A WHITE POWDERY SUBSTANCE ON THE LAVATORY FLOOR.

Narrative: UNKNOWN SUBSTANCE DISCOVERY OF ACFT. WHILE IN OUR DSCNT FOR ZZZ, THE #$1 FLT ATTENDANT INFORMED US THAT A WHITE POWDERY SUBSTANCE WAS ON THE FLOOR IN THE FORWARD LAVATORY. I INSTRUCTED HER TO COVER IT WITH A PLASTIC BAG, BLANKETS, BLOCK THE LAVATORY. I THEN INFORMED ZZZ OPS BY RADIO OF THE PROB. AFTER LNDG AT ZZZ, GND CTL PARKED US IN A REMOTE AREA AND SAID THAT HAZMAT TEAM WAS ON THE WAY. 2 HRS LATER, THEY ARRIVED AND INSPECTED THE SUBSTANCE. IT WAS DETERMINED THAT TIC-TAC BREATH MINTS HAD BEEN DROPPED AND STEPPED ON. THE HAZMAT CREW CHIEF THEN ALLOWED US TO TAXI TO OUR GATE AND DEPLANE NORMALLY. THE NEXT MORNING, CONTRACT MAINT WOULD NOT SIGN OFF LOGBOOK FOR SUBSTANCE IDENTED, SO AFTER CONFERRING WITH MAINT CTL, MGR ON DUTY, AND ZZZ OPS, I SIGNED OFF THE LOGBOOK WITH AN INFO TO MAINT UNDER THE GENERAL SECTION OF MEL.

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.