A B737-200 was dispatched with the accessory drive case oil xfer tubes missing resulting in no oil f...

Attributes
ACN	382011
Time
Date	199710
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-200
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	382011
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Oct/xx/97, aircraft xyz #1 engine change. N1 accessory drive needed replacing. I assigned a mechanic to replace it. He did and failed to install the xfer tubes. The aircraft flew to WWW and oil in the inlet was noticed the next day. I flew to WWW and troubleshot the problem, replaced the xfer tubes, leak check good. My company decided to change the inlet guide vanes and bearing in case the bearing didn't get proper oil. The problem started when an accessory case was shipped in during previous and the mechanics at that time discovered it was the wrong type of case. They ordered a new one and we received it on our shift. Apparently previous shift put 2 of the xfer tubes in the first case we received and didn't put them back in the old case when they discovered that it was the wrong one. I assigned a mechanic to install the new case we received on our shift and wasn't aware of how many xfer tubes were needed and swapped the parts that existed in the old case to the new. Another mechanic was assigned at this time to help with installation, they installed the case and went home without signing for their work. I stayed after my shift to finish the aircraft and ended up signing for their work.

Original NASA ASRS Text

Title: A B737-200 WAS DISPATCHED WITH THE ACCESSORY DRIVE CASE OIL XFER TUBES MISSING RESULTING IN NO OIL FLOW TO THE #1 BEARING.

Narrative: OCT/XX/97, ACFT XYZ #1 ENG CHANGE. N1 ACCESSORY DRIVE NEEDED REPLACING. I ASSIGNED A MECH TO REPLACE IT. HE DID AND FAILED TO INSTALL THE XFER TUBES. THE ACFT FLEW TO WWW AND OIL IN THE INLET WAS NOTICED THE NEXT DAY. I FLEW TO WWW AND TROUBLESHOT THE PROB, REPLACED THE XFER TUBES, LEAK CHK GOOD. MY COMPANY DECIDED TO CHANGE THE INLET GUIDE VANES AND BEARING IN CASE THE BEARING DIDN'T GET PROPER OIL. THE PROB STARTED WHEN AN ACCESSORY CASE WAS SHIPPED IN DURING PREVIOUS AND THE MECHS AT THAT TIME DISCOVERED IT WAS THE WRONG TYPE OF CASE. THEY ORDERED A NEW ONE AND WE RECEIVED IT ON OUR SHIFT. APPARENTLY PREVIOUS SHIFT PUT 2 OF THE XFER TUBES IN THE FIRST CASE WE RECEIVED AND DIDN'T PUT THEM BACK IN THE OLD CASE WHEN THEY DISCOVERED THAT IT WAS THE WRONG ONE. I ASSIGNED A MECH TO INSTALL THE NEW CASE WE RECEIVED ON OUR SHIFT AND WASN'T AWARE OF HOW MANY XFER TUBES WERE NEEDED AND SWAPPED THE PARTS THAT EXISTED IN THE OLD CASE TO THE NEW. ANOTHER MECH WAS ASSIGNED AT THIS TIME TO HELP WITH INSTALLATION, THEY INSTALLED THE CASE AND WENT HOME WITHOUT SIGNING FOR THEIR WORK. I STAYED AFTER MY SHIFT TO FINISH THE ACFT AND ENDED UP SIGNING FOR THEIR WORK.

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.

A B737-200 was dispatched with the accessory drive case oil xfer tubes missing resulting in no oil flow to the #1 bearing.