GLAST LAT ProjectFebruary 10, 2004 R. Johnson Tracker MCM Production Readiness Review 1 8 NCRs were generated during TMCM preproduction NCR #00029, CLOSED –Re-qualification of Omnetics connector is required based on process and design revision. NCR #00041, OPEN- Cause and Corrective Action submitted –Finish machining dimensions did not meet dimension specified on drawing. –Configuration management process was not adhered to, released drawing was not revised and re-released to reflect correct dimensions. –Tracker meeting held to review drawing release & configuration management process. –Drawing was updated with correct finish machine dimensions and released. PWBs were re-inspected per released design. NCR Summary

GLAST LAT ProjectFebruary 10, 2004 R. Johnson Tracker MCM Production Readiness Review 2 NCR #00042, OPEN- Cause and Corrective Action submitted –One PWB dispositioned “scrap” for exposed copper –One PWB dispositioned “scrap” for foreign material/stain –Qty 9 TMCMs RTV for re-label of Serial No. Traceability maintained, Re-inspection will be performed. NCR #00043, OPEN- Cause and Corrective Action submitted –Omnetics connector saver is being redesigned; 1) Jack screw too long. 2) Gap under jack screw introducing stress and bond of plastic body to alum. shell fails. 3) Low shear strength of bond line. –Redesign complete, NCR will remain open until redesign verified. NCR Summary

GLAST LAT ProjectFebruary 10, 2004 R. Johnson Tracker MCM Production Readiness Review 3 NCR #00044, OPEN- Cause and Corrective Action submitted –GSFC rejected dielectric thickness per IPC-6011, Class 3 –Configuration management was not adhered to. TMCMs were built to unreleased rev. 6. –Tracker Meeting held to review configuration management process. –Design released, parts meets dielectric requirement. NCR #00046, CLOSED –Teledyne reported SN 176 to have physical damage to Pitch Adaptor traces. Unit passed Final Electrical Test. –Disposition preproduction unit “use-as-is”. Teledyne reviewed handling procedures to preclude recurrence. NCR Summary

GLAST LAT ProjectFebruary 10, 2004 R. Johnson Tracker MCM Production Readiness Review 4 NCR #00048, CLOSED –GSFC rejected panel #152 coupon test for internal annular rings shorter that inches. –Audit performed on all PWBs in bldg. 33. –152-2 & scrapped. –152-1, 152-3, were utilized in non-flight preproduction MCMs. These MCMs are marked non-flight, introduction into flight stream is not possible. NCR #00050, CLOSED –GSFC rejected panel #158 coupon test for internal annular rings shorter that inches. –All nonconforming PWBs (qty 4) located and quarantined in Bldg. 33 MRB cabinet. NCR Summary

GLAST LAT ProjectFebruary 10, 2004 R. Johnson Tracker MCM Production Readiness Review 5 Waivers were requested and granted during TMCM preproduction for the following: –Source inspection not performed Source Inspector hired –Reject compound wire bond per MIL-STD-883 Test in process to translate original wire bond on die off - center to allow room for re-bond if required. –Second application of encapsulation to cover exposed wire bonds near ends of TMCM. Standard rework instructions developed –Wire bond over disturbed metal Test in process to translate original wire bond on die off - center to allow room for re-bond if required. Preproduction Waivers