8 NCRs were generated during TMCM preproduction

1
NCR Summary

• 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.

2
NCR Summary

• 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.

3
NCR Summary

• 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.

4
NCR Summary

• NCR 00048, CLOSED
• GSFC rejected panel 152 coupon test for internal
  annular rings shorter that 0.002 inches.
• Audit performed on all 00077 PWBs in bldg. 33.
• 152-2 152-4 scrapped.
• 152-1, 152-3, 152-5 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 0.002 inches.
• All nonconforming PWBs (qty 4) located and
  quarantined in Bldg. 33 MRB cabinet.

5
Preproduction Waivers

• 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.