61-19-03 LOCKHEED: Amdt. 338 Part 507 Federal Register September 20, 1961. Applies to All 049, 149, 649, 749, and 1049 Series Aircraft.
Compliance required as indicated.
As a result of findings during investigation of a recent Lockheed Model 049 aircraft fatal accident, it is necessary to require the following corrective action.
Unless already accomplished within the last 50 hours' time in service, the following special inspection is required at the first layover or stop where qualified maintenance personnel and facilities are available and the inspection can be conducted without undue delay but not to exceed the next 25 hours' time in service after the effective date of this AD. Inspect to ensure that the 5 bolts, nuts, and cotter pins in the parallelogram linkage between the elevator boost valve and boost mechanism are properly secured and safetied.
This directive effective September 20, 1961, for all persons except those to whom it was made effective immediately by telegram dated September 8, 1961.