AD 86-07-07

86-07-07 GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC.. INTERNATIONAL HELICOPTERS, INC., PILOT PERSONNEL INTERNATIONAL, INC., WILCO AVIATION: Amendment 39-5274. Applies to Model UH-1B helicopters modified by Garlick Helicopters, Hawkins and Powers Aviation, Inc., International Helicopters, Inc., Pilot Personnel International, Inc., and Wilco Aviation certified in any category that have a Bell Helicopter Textron, Inc., Part Number (P/N) 204-011-128-1 universal on the main rotor pitch change link.

Unless already accomplished, compliance is required within 15 days after the effective date of this AD or the next 10 hours time in service, whichever occurs first.

To prevent loss of main rotor control, accomplish the following:

(a) Inspect the P/N 204-011-128-1 universal assembly on the pitch change control link of the main rotor for Arko Precision Machinists' supplier P/N "DW-6ZZ." If found, replace before further flight with a serviceable assembly.

(b) If the P/N "DW-6ZZ" is missing or cannot be seen, apply MIL-G-81322 grease to each of the two grease fittings on the universal. If the grease does not purge past the seals, replace the P/N 204-011-128-1 universal before further flight with a serviceable assembly.

(c) P/N 212-010-412-1 universal is an acceptable alternate replacement for P/N 204-011-128-1 and may be considered interchangeable.

(d) Any alternate method of compliance which provides an equivalent level of safety with this AD may be used when approved by the Manager, Helicopter Certification Branch, Federal Aviation Administration, 4400 Blue Mound Road, Fort Worth, Texas 76106.

This amendment becomes effective April 25, 1986.