B767-300 and 300 ER
Maintenance Airframe; Maintenance Powerplant
Confusion; Training / Qualification
Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Human Factors; Procedure
I was assigned to work on aircraft to troubleshoot deferrals [Deferral No. 1] and [Deferral No. 2] per FIM 27-62-01. I attempted the operational test per AMM 27-62-00-715-002. This test failed. I then performed the B.I.T.E. of the SAC. This test has 2 levels one being the auto test; the other being the rig test. The rig test failed. At that point I re-deactivated the auto spoiler system as it was when the aircraft arrived. I was not aware of MIB 6-27-15-08 which explains the rig test bite of the SAC. Consequently the spoiler handle was restricted the spoiler handle movement to 50% travel. I had tested the spoiler handle operation prior to troubleshooting but neglected to do so after troubleshooting.
B767 Maintenance Technician was assigned the task of clearing a spoiler deferral; but was unable to do so. The MEL was reinstated; but the spoiler handle was not tested and the aircraft was dispatched with the spoiler restricted to 50% of normal.