<< >> NASA ASRS Report 735031, April 2007

A CL600 aircraft was released and continued in service for revenue flight with a known oxygen leak condition without any documentation.

Attributes
ACN	735031
Time
Date	200704
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Challenger CL600
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
ASRS Report	735031
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far
Independent Detector	other other : 1
Resolutory Action	other
Consequence	other
Factors
Maintenance	contributing factor : tooling contributing factor : schedule pressure contributing factor : briefing performance deficiency : fault isolation performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Aircraft Company Maintenance Human Performance
Primary Problem	Company

Narrative:

A spare aircraft was not available to allow the aircraft with the suspected leak to situation to allow for proper troubleshooting without taking cancellations and delays; and was allowed to continue with revenue flts. Aircraft X is suspected to have an oxygen leak; when I brought up concerns about allowing the aircraft to continue to fly with a suspected leak without being inspected; I was told not to worry about it and the plane will term the next evening. I was also told to have the oxygen svced to keep the pressure up to forgo maintenance calls by the crews. The aircraft was allowed to fly revenue with a possible discrepancy without being properly inspected. Proper actions have not been taken at this time. When an aircraft is suspected to have an oxygen leak it should be properly inspected when the leak is suspected; and should not fly revenue until the leak is located or confirmed non existent. Crew safety should not be compromised because a spare aircraft is not available to cover flts.

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Original NASA ASRS Text

Title: A CL600 ACFT WAS RELEASED AND CONTINUED IN SERVICE FOR REVENUE FLIGHT WITH A KNOWN OXYGEN LEAK CONDITION WITHOUT ANY DOCUMENTATION.

Narrative: A SPARE ACFT WAS NOT AVAILABLE TO ALLOW THE ACFT WITH THE SUSPECTED LEAK TO SIT TO ALLOW FOR PROPER TROUBLESHOOTING WITHOUT TAKING CANCELLATIONS AND DELAYS; AND WAS ALLOWED TO CONTINUE WITH REVENUE FLTS. ACFT X IS SUSPECTED TO HAVE AN OXYGEN LEAK; WHEN I BROUGHT UP CONCERNS ABOUT ALLOWING THE ACFT TO CONTINUE TO FLY WITH A SUSPECTED LEAK WITHOUT BEING INSPECTED; I WAS TOLD NOT TO WORRY ABOUT IT AND THE PLANE WILL TERM THE NEXT EVENING. I WAS ALSO TOLD TO HAVE THE OXYGEN SVCED TO KEEP THE PRESSURE UP TO FORGO MAINT CALLS BY THE CREWS. THE ACFT WAS ALLOWED TO FLY REVENUE WITH A POSSIBLE DISCREPANCY WITHOUT BEING PROPERLY INSPECTED. PROPER ACTIONS HAVE NOT BEEN TAKEN AT THIS TIME. WHEN AN ACFT IS SUSPECTED TO HAVE AN OXYGEN LEAK IT SHOULD BE PROPERLY INSPECTED WHEN THE LEAK IS SUSPECTED; AND SHOULD NOT FLY REVENUE UNTIL THE LEAK IS LOCATED OR CONFIRMED NON EXISTENT. CREW SAFETY SHOULD NOT BE COMPROMISED BECAUSE A SPARE ACFT IS NOT AVAILABLE TO COVER FLTS.

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.