AD 80-03-05 R1

80-03-05 R1 ROCKWELL INTERNATIONAL: Amendment 39-3685 as amended by Amendment 39-3772. Applies to Model NA-265-70 serial numbers 1 and 7 only, and NA-265-80 (all) series airplanes certificated in all categories.

Compliance required as indicated, unless already accomplished.

To prevent elevator trailing edge delamination, accomplish the following:

a. Within 15 hours' time in service or 10 days from the effective date of this AD, whichever occurs first, inspect elevator trailing edge for delamination as specified in paragraph 7, "Modification Instructions" of Rockwell International, Sabreliner Division, Service Bulletin No. 43 dated September 14, 1979.

b. If evidence of delamination is found, prior to further flight, accomplish paragraph (d) of this AD.

c. If no evidence of delamination is found, prior to the accumulation of 300 additional hours' time in service or 90 days from the effective date of this AD, whichever occurs first, accomplish paragraph (d) ofthis AD.

d. Repair any delamination, enlarge existing 25 drain holes and add 75 drain holes as specified in "Modification Instructions" of Service Bulletin No. 43, and add elevator balance weights and accomplish static balance check as specified in Rockwell International, Sabreliner Division, Service Bulletin No. 44 dated September 14, 1979.

e. Alternative inspections, modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.

f. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections required by this AD.

Amendment 39-3685 became effective February 11, 1980.

This Amendment 39-3772 becomes effective May 29, 1980.