AD 76-10-02

76-10-02 HUGHES HELICOPTERS: Amendment 39-2611. Applies to Hughes Model 269 series helicopters equipped with P/N 269A7316-3, -5, -7, -9, or -11 cyclic trim control assembly, certificated in all categories, including military TH-55A.

Compliance required as indicated.

To prevent the restriction of right lateral cyclic control which will result in the loss of right lateral control of the helicopter, accomplish the following:

(a) Within the next 25 hours time in service after the effective date of this AD, unless already accomplished;

(1) Remove the lateral cyclic trim control assembly from the helicopter in accordance with Hughes 269 Helicopter Basic Handbook of Maintenance Instructions and inspect the structural bond for any slippage between the 269A7142 tube and the 269A7318-1 housing of the 269A7316-3, -5, -7, -9, or -11 Lateral Cyclic Trim Control Assembly. The inspection of the bond consist of applying a 75 to 80 pound load to the 269A7142 tube in accordancewith Hughes Service Information Notice No. N-138, dated April 30, 1976 or later FAA-approved revision.

(2) Those assemblies with no slippage may be reinstalled per Hughes 269 Helicopter Basic Handbook of Maintenance Instructions.

(3) Those assemblies with slippage, repair per Hughes Service Information Notice No. N-138, dated April 30, 1976 or later FAA-approved revision or replace with a serviceable part prior to further flight.

(b) After the effective date of this AD, inspect and repair, if necessary, the lateral cyclic trim control assembly in spare inventory per Hughes Service Information Notice No. N-138, dated April 30, 1976 or later FAA-approved revision on or prior to installation on a helicopter.

(c) Equivalent inspections and repair may be approved by the Chief, Aircraft Engineering Division, Western Region.

NOTE: For the requirements regarding the listing of compliance and method of compliance with this AD in the rotorcraft maintenance record, see FAR 91.173.

(d) Rotorcraft may be flown to a base for accomplishment of the inspections required by this AD per FAR's 21.197 and 21.199.

This amendment becomes effective May 21, 1976.