65-12-01 GENERAL DYNAMICS: Amdt. 39-75 Part 39 Federal Register May 28, 1965. Applies to Models 340 and 440 Series Aircraft.
Compliance required within the next 500 hours' time in service after the effective date of this AD unless already accomplished, and thereafter each time the main landing gear gland nut is reinstalled.
To prevent the loss of a main landing gear piston and axle assembly due to an improperly installed gland nut, inspect the main landing gear nut installation to assure that the gland nut is installed as follows:
(a) Screw the gland nut, P/N 528062, onto the main landing gear outer cylinder, P/N 528402, until it is tight.
(b) Unscrew the gland nut until the first tapped hole is opposite one of the milled slots in the cylinder.
(c) Screw lock screw, P/N AN 501A-416-8, into the tapped hole so that the screw protrudes into the milled slot in the cylinder.
(d) Screw set screw, P/N 500305-4, into an adjacent tapped hole in the gland nut andsafety the lock screw and set screw with a lockwire.
(General Dynamics/Convair Models 340 and 440 Maintenance Manuals cover this same subject.)
This directive effective June 27, 1965.