83-21-05 AIRBUS INDUSTRIE: Amendment 39-4749. Applies to all model A300 series airplanes listed in Airbus Industrie Service Bulletin A300-30-026, certificated in all categories. To prevent loss of all airspeed indications, accomplish the following within the next 1800 flight hours after the effective date of this AD, unless already accomplished:
A. Modify the pitot probe heater in accordance with Airbus Industrie Service Bulletin A300-30-026, Revision 6, dated April 9, 1982.
B. Alternate means of compliance which provide an equivalent level of safety may be used if approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.
C. 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 modifications required by this AD.
This amendment becomes effective November 28, 1983.