B757 flight crew has crew oxygen loss; diverts and lands overweight.

Attributes
ACN	709581
Time
Date	200609
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : tjsj.artcc
State Reference	FO
Altitude	msl single value : 35000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : tjsj.artcc tower : ewr.tower
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	709581
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	709572
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : diverted to another airport flight crew : landed as precaution
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

We made an overweight landing due to loss of crew oxygen. The cause of the loss is unknown. The captain decided to land overweight because we felt that continued flight with little or no oxygen was less safe due to the possibility of smoke or fumes than landing slightly overweight.

Original NASA ASRS Text

Title: B757 FLT CREW HAS CREW OXYGEN LOSS; DIVERTS AND LANDS OVERWT.

Narrative: WE MADE AN OVERWT LNDG DUE TO LOSS OF CREW OXYGEN. THE CAUSE OF THE LOSS IS UNKNOWN. THE CAPT DECIDED TO LAND OVERWT BECAUSE WE FELT THAT CONTINUED FLT WITH LITTLE OR NO OXYGEN WAS LESS SAFE DUE TO THE POSSIBILITY OF SMOKE OR FUMES THAN LNDG SLIGHTLY OVERWT.

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.