AD 88-25-05

88-25-05 BELL HELICOPTER TEXTRON, INC. (BHTI); CALIFORNIA DEPARTMENT OF FORESTRY; GARLICK HELICOPTERS; HAWKINS AND POWERS AVIATION, INC.; INTERNATIONAL HELICOPTERS, INC.; PILOT PERSONNEL INTERNATIONAL, INC.; SMITH HELICOPTERS; SOUTHERN AERO CORPORATION; OREGON HELICOPTERS; WEST COAST FABRICATIONS; and HERCULES: Amendment 39-6079. Applies to Model 204B, 205A, and 205A-1 helicopters certificated in any category and Model UH-1B, UH-1E, UH-1F, UH-1L, and TH-1L helicopters certificated in the restricted category that have tail rotor grip assembly P/N 204-011-728-1, -13, or -19 installed.

Compliance is required as indicated, unless already accomplished.

To prevent failure of the tail rotor (T/R) grip assembly, accomplish the following:

(a) Within the next 50 hours' time in service after the effective date of this AD, remove the T/R grip assembly, P/N 204-011-728-1, -13, or -19 with 250 or more hours' time in service and replace with a serviceable part.

(b) For those T/R grip assemblies, P/N 204-011-728-1, -13 or -19, with less than 250 hours' time in service on the effective date of this AD, a retirement life of 300 hours is established.

(c) 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, Fort Worth, Texas 76193-0170.

This amendment (39-6079, AD 88-25-05) becomes effective December 13, 1988.