AD 64-23-01

64-23-01 BOEING: Amdt. 819 Part 507 Federal Register October 14, 1964. Applies to Models 707 and 720 Series Aircraft.

Compliance required within the next 65 hours' time in service after the effective date of this AD, unless already accomplished.

(a) With the rudder full right, inspect the installation of the rudder control link arm assembly P/N 65-12703 to ensure:

(1) that clearance exists between the rudder control link arm assembly and the lower pivot clevis for that arm assembly;

(2) that clearance exists between the arm assembly and the rudder spar web; and

(3) that there is no evidence of previous interference.

(b) If clearance does not exist, rework the existing parts in accordance with Boeing Alert Service Bulletins 2052 and 2052A, or in a manner approved by the Chief, Aircraft Engineering Division, FAA Western Region, or install new parts which provide clearance.

(c) If there is evidence of previous interference, replace the lower arm assembly pivot bolt.

(Boeing Alert Service Bulletins 2052 and 2052A cover this same subject.)

This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated September 25, 1964.