Page:NTSB Report, 1967 Lear Jet crash.pdf/8

- 5 - November 13, 1964 It was operated by the owner and the Lear Jet Corporation, under lease, until September 10, 1965, when it was returned to the Lear Jet facility for modiflcation and updating to new S/N 015A. This involved the installation of several service kits and the replacement of approximately 85 percent of the electrical wiring.

The Manager of Quality Control at the Lear Jet Corporation reported that the company service organization was not staffed sufficiently to accomplish such a major modification at that time. Accordingly, it was decided that the electrical updating would be accomplished by production personnel using an Operation and Inspection Record (O & IR) under the supervision of production quality control supervisors The necessary mechanical functions associated with the electrical updating, installation of service kits, and the shakedown and functional tests of other systems would be accomplished by service personnel using a Service Work Order Log. The aircraft would then be prepared for flight by the Flight Ground Department. In these areas the inspection authority rests with FAA-Designees holding an Inspection Authorization. The manager stated, "Hwre the controlling authority is strictly FAR 43 and 91 and the use of regular production flight forms is not mandatory in this case. The only requirement in this type of operation with a certificated aircraft is that the Designee holding the Inspection Authorization assure himself that the aircraft and its systems are sound and functionally tested to the extent that he can use his Authorization to pronounce the aircraft airworthy and release it to flight."