An MD80 declared an emergency on taxi in to gate due to smoke and fumes in the cabin and cockpit.

Attributes
ACN	359381
Time
Date	199701
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ord
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground other : taxi other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 25000 flight time type : 35
ASRS Report	359381
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 210 flight time total : 10400 flight time type : 4500
ASRS Report	359465
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other other : unspecified other other : unspecified cockpit
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On taxi in after landing, the cabin and cockpit filled with intense white smoke in about 10-15 seconds. Cause was a hydraulic leak on top of the APU which was supplying air conditioning. We notified the tower, ground, etc, and shut down the APU and engines. Opening the cockpit windows hastened the departure of the smoke from the cockpit. I (captain) immediately got on the PA, told the passenger to remain seated, and directed the flight attendants to open the aircraft exits. The smoke dissipated from the cabin area in about 10 seconds. I walked through the cabin area and assured the passenger of the problem and there was no reason for further alarm. We then deplaned the passenger through the aft airstairs. All external resources (fire department and maintenance) responded satisfactorily.

Original NASA ASRS Text

Title: AN MD80 DECLARED AN EMER ON TAXI IN TO GATE DUE TO SMOKE AND FUMES IN THE CABIN AND COCKPIT.

Narrative: ON TAXI IN AFTER LNDG, THE CABIN AND COCKPIT FILLED WITH INTENSE WHITE SMOKE IN ABOUT 10-15 SECONDS. CAUSE WAS A HYD LEAK ON TOP OF THE APU WHICH WAS SUPPLYING AIR CONDITIONING. WE NOTIFIED THE TWR, GND, ETC, AND SHUT DOWN THE APU AND ENGS. OPENING THE COCKPIT WINDOWS HASTENED THE DEP OF THE SMOKE FROM THE COCKPIT. I (CAPT) IMMEDIATELY GOT ON THE PA, TOLD THE PAX TO REMAIN SEATED, AND DIRECTED THE FLT ATTENDANTS TO OPEN THE ACFT EXITS. THE SMOKE DISSIPATED FROM THE CABIN AREA IN ABOUT 10 SECONDS. I WALKED THROUGH THE CABIN AREA AND ASSURED THE PAX OF THE PROB AND THERE WAS NO REASON FOR FURTHER ALARM. WE THEN DEPLANED THE PAX THROUGH THE AFT AIRSTAIRS. ALL EXTERNAL RESOURCES (FIRE DEPT AND MAINT) RESPONDED SATISFACTORILY.

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.