Change Control Detail

Category	Documentation / Administrative	Requested By	H. Lindgren (Doc Control)
Date Submitted	08 Jun 2026	Date Decided	15 Jun 2026
Approval Authority	Acme Internal (Tier 1) — C. Tyrrell

Description: A drawing reference number in the part marking specification pointed to a superseded engineering revision letter. No change to the physical marking requirement — the correction is purely to the document reference.

Justification: Caught during a routine document-control audit; left uncorrected, it risked confusion for future engineering changes referencing the wrong baseline revision.

Impact: None to cost, schedule, or the physical part.

Approved

Category	Documentation / Administrative	Requested By	R. Kessler (Quality Eng. Lead)
Date Submitted	02 Aug 2026	Date Decided	09 Aug 2026
Approval Authority	Acme Internal (Tier 1) — R. Kessler

Description: First Article Inspection found the edge-trim tolerance callout ambiguous between two adjacent drawing views (top view vs. section view showed the tolerance zone slightly differently). Wording clarified; the actual tolerance value did not change.

Justification: Ambiguous callouts risk inconsistent interpretation between inspectors on different shifts.

Impact: None to cost or schedule. Directly informed the standard used at First Article Inspection.

Approved

Category	Documentation / Administrative	Requested By	R. Kessler (Quality Eng. Lead)
Date Submitted	12 Aug 2026	Date Decided	19 Aug 2026
Approval Authority	Acme Internal (Tier 1) — R. Kessler

Description: The customer source-inspection auditor flagged 2 acceptance criteria on the FAI checklist as ambiguous (see RAIDD Issue I-04). The checklist was revised with unambiguous pass/fail criteria and re-issued for all subsequent article runs.

Justification: Ambiguous acceptance criteria risk inconsistent FAI results across future units.

Impact: None to cost or schedule. See RAIDD Issue I-04 for the originating finding.

Approved

Category	Schedule / Resource	Requested By	C. Tyrrell (Program Manager)
Date Submitted	21 Sep 2026	Date Decided	28 Sep 2026
Approval Authority	Executive Sponsor (Tier 2) — G. Talmadge

Description: Formalized the correction of the delivery team from a 14-person, single-shift estimate to a 25-person, two-shift team into the program's standing resource and schedule baseline, ahead of Phase 2 production ramp.

Justification: The original staffing estimate was insufficient to run real steady-state two-shift production — see RAIDD Risk R-07 and Decision D-05 for the full record.

Impact: Program budget corrected from $3,500,000 to $5,200,000. See the Resource Plan and Program Budget for full detail.

Approved

Category	Engineering Change (ECN)	Requested By	L. Vance (Materials/NDT Eng.)
Date Submitted	25 Sep 2026	Date Decided	07 Oct 2026
Approval Authority	Meridian Program Office (Tier 3)

Description: Added immersion ultrasonic testing as a Meridian-approved alternate inspection method to contact UT on the engineering drawing's NDT callout, with no change to acceptance criteria.

Justification: Supports the corrected two-shift NDT staffing model (2 Level II technicians) with a method better suited to sustained two-shift throughput; addresses the NDT queue backlog recorded in RAIDD Issue I-02.

Impact: No change to cost or acceptance criteria. Requires Meridian approval since NDT method is a drawing callout, not an internal Acme process choice.

Approved

Category	Process / Tooling	Requested By	M. Osei (Manufacturing Eng.)
Date Submitted	02 Dec 2026	Date Decided	11 Dec 2026
Approval Authority	Acme Internal (Tier 2) — Program Review Board

Description: Root cause corrective action following MRB-004 (ply misalignment traced to layup fixture wear) — added a standing preventive-maintenance schedule for the fixture. No change to the part or its acceptance criteria.

Justification: Prevents recurrence of the same root cause on future production runs. See the Material Review Board log for MRB-004.

Impact: Minor recurring maintenance cost, absorbed within existing tooling/maintenance budget lines — no baseline change.

Approved

Category	Engineering Change (ECN)	Requested By	R. Kessler (Quality Eng. Lead)
Date Submitted	15 Dec 2026	Date Decided	05 Jan 2027
Approval Authority	Meridian Program Office (Tier 3)

Description: Formalized the rework disposition already used in MRB-001 and MRB-003 into a standing repair-limits table on the engineering drawing, so future oversized-fastener-hole findings within the approved range don't each require a fresh MRB rework disposition.

Justification: Reduces repeat MRB cycle time for a known, bounded, already-precedented finding. See the Material Review Board log for MRB-001 and MRB-003.

Impact: No cost impact; reduces future MRB cycle time for this specific finding type. Requires Meridian approval since it changes the accepted repair envelope on the engineering drawing.

Approved

Category	Supplier / Material	Requested By	S. Pham (Supplier Quality Eng.)
Date Submitted	28 Oct 2026	Date Decided	19 Nov 2026
Approval Authority	Meridian Program Office (Tier 3)

Description: Added a second qualified supplier to the engineering drawing's approved-source list for the primary composite prepreg material.

Justification: Closes out the single-source schedule exposure recorded as RAIDD Risk R-01 (score 9, High/High) — see RAIDD Decision D-03 for the full record.

Impact: No change to the current program budget; qualification cost was scoped separately. Requires Meridian approval since the approved-source list is part of the engineering drawing baseline.

Approved