B737-300 flight crew has fumes in the cockpit during deicing procedures.

Attributes
ACN	723889
Time
Date	200701
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mdw.airport
State Reference	IL
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Weather Elements	Ice Snow
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 121 flight time type : 155
ASRS Report	723889
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 265 flight time type : 4200
ASRS Report	723820
Events
Anomaly	other anomaly
Independent Detector	aircraft equipment other aircraft equipment : lav smoke alarm other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

We received aircraft late. After loading passenger; I informed them that we would have to be deiced (light snow falling at mdw) and that we would have to wait in line to be deiced. After receiving pushback and taxi clearance; we got in line to be deiced. While waiting we performed before deicing checklist. At this point I elected not to turn off the #2 or the APU bleed until later in order to keep the passenger as comfortable as possible. We then proceeded to be deiced. The deicing crew informed us the type of deicing fluid to be used and that 2 trucks would be working us. We checked the holdover time again as they started spraying us and started the time. Seconds later we noticed the smell of deicing fluid. At that time we realized my mistake and immediately turn off the bleeds. Some of the steam entered the aircraft interior. At about the time the deicing crew finished; the forward lavatory smoke detector sounded. Called ground to return to gate; called operations and maintenance. They met us and maintenance came onboard and checked the aircraft; then signed it off.

Original NASA ASRS Text

Title: B737-300 FLT CREW HAS FUMES IN THE COCKPIT DURING DEICING PROCS.

Narrative: WE RECEIVED ACFT LATE. AFTER LOADING PAX; I INFORMED THEM THAT WE WOULD HAVE TO BE DEICED (LIGHT SNOW FALLING AT MDW) AND THAT WE WOULD HAVE TO WAIT IN LINE TO BE DEICED. AFTER RECEIVING PUSHBACK AND TAXI CLRNC; WE GOT IN LINE TO BE DEICED. WHILE WAITING WE PERFORMED BEFORE DEICING CHKLIST. AT THIS POINT I ELECTED NOT TO TURN OFF THE #2 OR THE APU BLEED UNTIL LATER IN ORDER TO KEEP THE PAX AS COMFORTABLE AS POSSIBLE. WE THEN PROCEEDED TO BE DEICED. THE DEICING CREW INFORMED US THE TYPE OF DEICING FLUID TO BE USED AND THAT 2 TRUCKS WOULD BE WORKING US. WE CHKED THE HOLDOVER TIME AGAIN AS THEY STARTED SPRAYING US AND STARTED THE TIME. SECONDS LATER WE NOTICED THE SMELL OF DEICING FLUID. AT THAT TIME WE REALIZED MY MISTAKE AND IMMEDIATELY TURN OFF THE BLEEDS. SOME OF THE STEAM ENTERED THE ACFT INTERIOR. AT ABOUT THE TIME THE DEICING CREW FINISHED; THE FORWARD LAVATORY SMOKE DETECTOR SOUNDED. CALLED GND TO RETURN TO GATE; CALLED OPS AND MAINT. THEY MET US AND MAINT CAME ONBOARD AND CHKED THE ACFT; THEN SIGNED IT OFF.

Data retrieved from NASA's ASRS site as of January 2009 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.