63-16-06 UNIVERSAL: Amdt. 590 Part 507 Federal Register July 24, 1963. Applies to Models Temco D-16 and D-16A Aircraft.
Compliance required within the next 25 hours' time in service after the effective date of this AD, and at each periodic inspection thereafter.
The landing gear selector valve end fitting P/N 145-58145-3 (heat-treated and nonheat- treated) has a service history of failure during attempts to extend the gear. To preclude further difficulties:
Inspect the gear actuating system in accordance with Navion Service Letter No. 81 dated March 31, 1961. Any defective parts found as a result of this inspection must be replaced before further flight.
This directive effective August 23, 1963.