Aerospace & Defense Manufacturing calculator

Nonconformance Disposition Time Calculator

Aerospace nonconformances often require MRB review, root-cause notes, engineering use-as-is decisions, repair instructions, or customer approval. This calculator estimates disposition time so program teams can see how quality escapes affect WIP, delivery, and engineering capacity.

What this calculator does

  • Estimate MRB disposition hours from nonconformance records, review pace, and engineering or customer approval allowance.
  • a program manager or quality engineer needs to estimate how long nonconforming flight hardware will sit in MRB review
  • Returns estimated hours needed to disposition nonconforming aerospace hardware.

Formula used

  • Base MRB review time = nonconformance records ÷ disposition review pace
  • Total disposition time = base MRB review time × (1 + engineering and customer approval allowance)

Inputs explained

  • Nonconformance records for MRB: undefined
  • Disposition review pace: undefined
  • Engineering and customer approval allowance: undefined

How to use the result

  • Use it for MRB queues, supplier NCRs, in-process defects, customer returns, or use-as-is and repair decisions.
  • It does not determine acceptability; engineering authority, contract flow-downs, airworthiness, and customer approval still govern final disposition.

Common questions

  • What information do I need for nonconformance disposition time? You need NCR count, review pace, and an allowance for engineering review, customer approval, root cause, or supplier response.
  • Which units should I use for nonconformance disposition time? Use the units shown beside each field and keep the same lot, contract, or planning period throughout the calculation. Convert minutes to hours, pounds to kilograms, dollars per part to dollars per lot, or counts to lots before entering mixed data.
  • What does the nonconformance disposition time result tell me? It estimates how many hours nonconformance disposition may consume before parts can move.
  • When is this nonconformance disposition time estimate only approximate? Use it to prioritize MRB work, protect delivery dates, assign engineers, or decide whether containment should be expanded.

Last reviewed 2026-05-12.