82-23-07 RATIER-FIGEAC FH.146: Amendment 39-4490. Applies to Ratier-Figeac propeller Model FH.146.
Compliance required within the next 100 hours of operation after the effective date of this AD unless already accomplished.
To preclude the possibility of propeller blade failure, accomplish the following:
(a) In accordance with Ratier-Figeac Service Bulletin No. 61-142 dated June 1, 1982, or an equivalent method approved by the Manager, Aircraft Certification Division, Federal Aviation Administration, New England Region:
1. Measure electrical resistance at end of disconnected wires of slip ring assembly.
2. Measure electrical resistance of insulation between wires and each propeller blade.
(b) Remove propellers with measurements outside the limits of Bulletin No. 61-142 from service prior to further flight.
This airworthiness directive becomes effective November 15, 1982.