A300 crew had contaminated air in the aft cabin in-flight.

Attributes
ACN	411020
Time
Date	199808
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : jfk
State Reference	NY
Altitude	msl bound lower : 26000 msl bound upper : 33000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zny
Operator	common carrier : air carrier
Make Model Name	A300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : atlantic enroute other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	411020
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

A long detailed write-up went into the aircraft logbook describing this event. About 45 mins after departure, 2 flight attendants in aft cabin reported feeling woozy. I presumed fatigue due to predawn sign-in since all indications normal on aircraft, but requested update soon. Later, 4 flight attendants now lightheaded, disoriented. Descended from FL330 to FL260. Took cabin altitude down several thousand ft. Symptoms moderated but continued. More people getting them. Much troubleshooting and sending of healthy flight attendant aft to check for buildup of symptoms, used cockpit oxygen masks to revitalize most affected folks. Finally isolated source as #2 engine bleed air. Completed flight with no recurrence of symptoms, #2 bleed off. Passenger seemed more listless than normal, but none complained -- just zombies. All seemed ok upon arrival. Debriefed maintenance upon arrival.

Original NASA ASRS Text

Title: A300 CREW HAD CONTAMINATED AIR IN THE AFT CABIN INFLT.

Narrative: A LONG DETAILED WRITE-UP WENT INTO THE ACFT LOGBOOK DESCRIBING THIS EVENT. ABOUT 45 MINS AFTER DEP, 2 FLT ATTENDANTS IN AFT CABIN RPTED FEELING WOOZY. I PRESUMED FATIGUE DUE TO PREDAWN SIGN-IN SINCE ALL INDICATIONS NORMAL ON ACFT, BUT REQUESTED UPDATE SOON. LATER, 4 FLT ATTENDANTS NOW LIGHTHEADED, DISORIENTED. DSNDED FROM FL330 TO FL260. TOOK CABIN ALT DOWN SEVERAL THOUSAND FT. SYMPTOMS MODERATED BUT CONTINUED. MORE PEOPLE GETTING THEM. MUCH TROUBLESHOOTING AND SENDING OF HEALTHY FLT ATTENDANT AFT TO CHK FOR BUILDUP OF SYMPTOMS, USED COCKPIT OXYGEN MASKS TO REVITALIZE MOST AFFECTED FOLKS. FINALLY ISOLATED SOURCE AS #2 ENG BLEED AIR. COMPLETED FLT WITH NO RECURRENCE OF SYMPTOMS, #2 BLEED OFF. PAX SEEMED MORE LISTLESS THAN NORMAL, BUT NONE COMPLAINED -- JUST ZOMBIES. ALL SEEMED OK UPON ARR. DEBRIEFED MAINT UPON ARR.

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.