DH8-200 was dispatched in non compliance with a wing tank drain valve incorrectly assembled and inst...

Attributes
ACN	616798
Time
Date	200405
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Controlling Facilities	tower : mdt.tower
Operator	common carrier : air carrier
Make Model Name	Dash 8-200
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance technician : 13
ASRS Report	616798
Person 2
Affiliation	company : air carrier
Function	oversight : supervisor
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other other : person 1
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	contributing factor : manuals performance deficiency : non compliance with legal requirements performance deficiency : repair performance deficiency : installation performance deficiency : logbook entry
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

Aircraft came in this night with fuel dripping from drain just forward of spar. 3 days prior, same problem with this aircraft. On that day, we removed valve assembly and replaced packings on the fuel tubes and adapters that seal the wiggin fittings. So on may/thu/04, I removed valve assembly and replaced all associated parts. The 2 o-rings that seal the adapters to the valve were not installed. The ipc did not show an o-ring there, but listed one which said (supplied with valve), so I thought the white seal around the valve was the part it was talking about. In the maintenance manual, it says to lube and install, which I thought was already done when it comes out of parts. I then installed and no problems since then. I realized I missed the o-rings when I was tasked to do the same job on another aircraft tonight, may/sun/04. I contacted maintenance supervisor to inform maintenance control of problem.

Original NASA ASRS Text

Title: DH8-200 WAS DISPATCHED IN NON COMPLIANCE WITH A WING TANK DRAIN VALVE INCORRECTLY ASSEMBLED AND INSTALLED.

Narrative: ACFT CAME IN THIS NIGHT WITH FUEL DRIPPING FROM DRAIN JUST FORWARD OF SPAR. 3 DAYS PRIOR, SAME PROB WITH THIS ACFT. ON THAT DAY, WE REMOVED VALVE ASSEMBLY AND REPLACED PACKINGS ON THE FUEL TUBES AND ADAPTERS THAT SEAL THE WIGGIN FITTINGS. SO ON MAY/THU/04, I REMOVED VALVE ASSEMBLY AND REPLACED ALL ASSOCIATED PARTS. THE 2 O-RINGS THAT SEAL THE ADAPTERS TO THE VALVE WERE NOT INSTALLED. THE IPC DID NOT SHOW AN O-RING THERE, BUT LISTED ONE WHICH SAID (SUPPLIED WITH VALVE), SO I THOUGHT THE WHITE SEAL AROUND THE VALVE WAS THE PART IT WAS TALKING ABOUT. IN THE MAINT MANUAL, IT SAYS TO LUBE AND INSTALL, WHICH I THOUGHT WAS ALREADY DONE WHEN IT COMES OUT OF PARTS. I THEN INSTALLED AND NO PROBS SINCE THEN. I REALIZED I MISSED THE O-RINGS WHEN I WAS TASKED TO DO THE SAME JOB ON ANOTHER ACFT TONIGHT, MAY/SUN/04. I CONTACTED MAINT SUPVR TO INFORM MAINT CTL OF PROB.

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.

DH8-200 was dispatched in non compliance with a wing tank drain valve incorrectly assembled and installed.