<< >> NASA ASRS Report 409527, June 1998

An airbus 300 had the #2 engine high pressure pneumatic bleed shutoff valve replaced and checked per the maintenance manual. Mechanics who replaced the valve were advised 5 days later that valve had failed. Failure mode unknown.

Attributes
ACN	409527
Time
Date	199806
Day	Mon
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A300
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	409527
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	409526
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	faa : investigated Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On jun/xz/98 I helped change a high pressure bleed valve on #2 engine as per the maintenance manual. Ran up the engine and leak checked as per the maintenance manual. Five days later we were notified that the valve failed. Callback conversation with reporter revealed the following information: the reporter stated the valve that was installed by the reporter checked ok on engine run per the maintenance manual. The reporter said the FAA did investigate this incident and later the company advised the reporter that they were satisfied with the reporter's information and no further action was planned.

Related reports:

• B757-200 was dispatched in non compliance with the right pne...
• SF340 flight crew encounters engine bleed and pneumatic syst...
• A B737-300 was dispatched and returned to the field after ma...
• A B777 technician points out areas of conflict between the m...
• A mechanic reports he believes an FBO contract maintenance p...
• An A320 flight crew and maintenance techs reported an improp...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: AN AIRBUS 300 HAD THE #2 ENG HIGH PRESSURE PNEUMATIC BLEED SHUTOFF VALVE REPLACED AND CHKED PER THE MAINT MANUAL. MECHS WHO REPLACED THE VALVE WERE ADVISED 5 DAYS LATER THAT VALVE HAD FAILED. FAILURE MODE UNKNOWN.

Narrative: ON JUN/XZ/98 I HELPED CHANGE A HIGH PRESSURE BLEED VALVE ON #2 ENG AS PER THE MAINT MANUAL. RAN UP THE ENG AND LEAK CHKED AS PER THE MAINT MANUAL. FIVE DAYS LATER WE WERE NOTIFIED THAT THE VALVE FAILED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE VALVE THAT WAS INSTALLED BY THE RPTR CHKED OK ON ENG RUN PER THE MAINT MANUAL. THE RPTR SAID THE FAA DID INVESTIGATE THIS INCIDENT AND LATER THE COMPANY ADVISED THE RPTR THAT THEY WERE SATISFIED WITH THE RPTR'S INFO AND NO FURTHER ACTION WAS PLANNED.

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.