Report of the PRESIDENTIAL COMMISSION on the Space Shuttle Challenger Accident

After receiving written concurrence from certain Johnson organizations, Glynn Lunney, the Shuttle Program Manager, approved the Criticality change, based on a telephone conversation with Lawrence Mulloy, the Solid Rocket Booster Project Manager. The action was taken without convening a meeting of the Program Requirements Control Board. This action authorized submittal of a waiver of the fail-safe

After receiving written concurrence from certain Johnson organizations, Glynn Lunney, the Shuttle Program Manager, approved the Criticality change, based on a telephone conversation with Lawrence Mulloy, the Solid Rocket Booster Project Manager. The action was taken without convening a meeting of the Program Requirements Control Board. This action authorized submittal of a waiver of the fail-safe " design requirement to level i. glynn lunney signed this request for i approve the field joint a waiver of "fail-safe shuttle component , in that had been reclassified as criticality 1 (no redundancy ). was approved by L. Michael Weeks on march 28 1983.

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