Narrative:

Mechanic 'X' and I were assigned to install the right-hand engine on a saab-340 aircraft. Neither one of us had ever removed or installed a saab engine before so we took our time. After inspecting the old and new parts we began to remove the engine mounts. I removed the left-hand mount and placed it on my tool box. I then filled out the removal information on the yellow parts tag. Mechanic 'X' was ready to install his when he found out that half the hardware was missing. The hardware for this job was ordered short!after I finished filling out the yellow tag I placed the old worn part in the plastic bag and placed the yellow filled out tag in with it and placed it on the table. I then installed the new mount onto the engine with the old hardware but the bolts were only finger tight so they could be replaced with the new hardware later. While waiting for the rest of the hardware I was pulled off the [first] saab-340 to work on the brake valve assembly of another saab-340. Before I started on the second saab-340; I told the other mechanic that the new part [engine mount] was on the plane with the old hardware but only finger tight.the new brake valve job took me till morning to finish. I did not return to the first saab-340 at all that night. My manager informed me of the issue two days later. We didn't have all the hardware needed. If we did I would have installed the mount onto the engine right away. Whoever removed the new part didn't observe that the yellow tag was already filled out next to the old; dirty part. The inspector didn't verify serial numbers before the engine was installed. Stores found the new part returned to them instead of the old part; reported it and the new left-hand engine mount was then installed.I suggest ordering all of the hardware. Place an individual on the job who has performed the job before to help and train those of us who have never done the job before. Place two tables next to the aircraft; one for new or saved parts and one for non-serviceable parts.

Related reports:

Google
 

Original NASA ASRS Text

Title: A Mechanic and an Inspector report how a chain of events contributed to a Saab-340 right engine change having a new; partially installed left mount removed and the old mount inadvertently re-installed. Factors involved lack of experience and training; lack of new hardware; Crew turnover; lack of adequate Supervision; Lead Mechanic oversight and mis-communications.

Narrative: Mechanic 'X' and I were assigned to install the right-hand engine on a Saab-340 aircraft. Neither one of us had ever removed or installed a Saab engine before so we took our time. After inspecting the old and new parts we began to remove the engine mounts. I removed the left-hand mount and placed it on my tool box. I then filled out the removal information on the yellow parts tag. Mechanic 'X' was ready to install his when he found out that half the hardware was missing. The hardware for this job was ordered short!After I finished filling out the yellow tag I placed the old worn part in the plastic bag and placed the yellow filled out tag in with it and placed it on the table. I then installed the new mount onto the engine with the old hardware but the bolts were only finger tight so they could be replaced with the new hardware later. While waiting for the rest of the hardware I was pulled off the [first] Saab-340 to work on the Brake Valve Assembly of another Saab-340. Before I started on the second Saab-340; I told the other Mechanic that the new part [engine mount] was on the plane with the old hardware but only finger tight.The new brake valve job took me till morning to finish. I did not return to the first Saab-340 at all that night. My Manager informed me of the issue two days later. We didn't have all the hardware needed. If we did I would have installed the mount onto the engine right away. Whoever removed the new part didn't observe that the yellow tag was already filled out next to the old; dirty part. The Inspector didn't verify serial numbers before the engine was installed. Stores found the new part returned to them instead of the old part; reported it and the new left-hand engine mount was then installed.I suggest Ordering all of the hardware. Place an individual on the job who has performed the job before to help and train those of us who have never done the job before. Place two tables next to the aircraft; one for new or saved parts and one for non-serviceable parts.

Data retrieved from NASA's ASRS site as of April 2012 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.