82-22-04: Window Transparency

82-22-04 SHORT BROTHERS LIMITED: Amendment 39-4482. Applies to Model SD3-30 airplanes serial numbers SH3002-SH3071 inclusive, SH3073, SH3075, SH3077, and SH3078. Compliance required within the next 100 hours time in service after the effective date of this AD unless already accomplished. To prevent window transparency penetration by propeller ice: 1. Replace the right outer window transparency immediately aft of the propeller plane with a transparency of increased thickness in accordance with paragraph 2, "Accomplishment Instructions," of Short Brothers Limited Service Bulletin SD3-56-02 dated November 5, 1981. 2. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. 3. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modificationsrequired by this AD. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). This amendment becomes effective November 8, 1982.