1、Lessons Learned Entry: 0928Lesson Info:a71 Lesson Number: 0928a71 Lesson Date: 1972-11-06a71 Submitting Organization: ARCa71 Submitted by: Chuck Connors, Sr.Subject: KAO Aft Bulkhead Installation Description of Driving Event: The aft cavity bulkhead was built entirely outside the aircraft with no re
2、quirements to demonstrate the actual fit inside the aircraft. After manufacturing was complete, it was discovered that the aft bulkhead did not fit inside the aircraft. An investigation of this problem revealed that the dimensions on the drawings were incorrect. The aft bulkhead wall had to be remov
3、ed and modified. This additional work cost the project a delay of about 3 weeks.Lesson(s) Learned: The design and related interfaces including tooling need to be shown to fit prior to installation.Recommendation(s): Use of a mockup to prove out the tooling and related interfaces is recommended.Evide
4、nce of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a71 Exploration Systemsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Ground Operationsa71 Test & VerificationAdditional Info: Approval Info: a71 Approval Date: 2001-03-05a71 Approval Name: Eric Raynora71 Approval Organization: QSa71 Approval Phone Number: 202-358-4738Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
