During testing at the Airframer, discover that the Wrong Problem was solved. Involve Systems Engineering to see what the Quick Solution is. Write more Plans. Define a Multiple Phase Certification Effort. Write Reports to show that all Plans have been complied with.
Reports are Good.
Reports are better then Plans. Attempt to mazimize Report Generation as new unit cannot be approved until FAA engineering is totally buried under reports. One week prior to release of new unit to the airlines, give all engineering documentation to Product Support. Tell them that It's Really Important that they have a Product Support Plan in place by next week. Inform Airlines that the New Unit is not backwards compatable with the old units, so they will have to buy all new spares.