AD 78-23-11

78-23-11 GRUMMAN: Amendment 39-3341 as amended by amendment 39-3420. Applies to Grumman G-164 S/N's 1 thru 400, G-164A S/N's 401 and up, G-164B S/N's 01B and up, G-164C S/N's 01C and up, certificated in all categories.

Compliance is required as indicated.

To detect aileron balance cables containing broken wires, P/N's A1860-101 and A1860-401 at the wing root pulley, accomplish the following:

(a) Within the next 50 hours in service after the effective date of this AD, unless already accomplished within the last 550 hours, inspect the aileron cables for broken wires where they cross the pulley near the right and left wing roots.

(b) Within the next 600 hours in service after the compliance with paragraph (a) of this AD, and within every 600 hours in service thereafter, repeat the inspection of paragraph (a).

(c) Replace cables containing broken wires, prior to next flight, with unused cables of the same part number or with an approved equivalent.

(d) Equivalent parts must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

(e) Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, may adjust the inspection intervals in this AD.

(f) The aircraft may be flown in accordance with FAR 21.197 to a location where the AD can be accomplished.

(Grumman American Ag-Cat Service Bulletin No. 63, dated October 6, 1978, is concerned with this subject.)

Amendment 39-3341 was effective November 13, 1978.

This amendment 39-3420 is effective February 28, 1979.