80-13-06 PIPER AIRCRAFT CORPORATION: Amendment 39-3803. Applies to Model PA-31-325, serial numbers 31-7400990, 31-7512006 through 31-7612030; and Model PA-31-350, serial numbers 31-5001 through 31-7652066 airplanes certificated in all categories.
Compliance required within the next 50 hours' time in service after the effective date of this Airworthiness Directive unless already accomplished.
To prevent possible failure of the alternate air door magnetic catch assembly attachment and ingestion of the magnetic catch into the turbocharger accomplish the following:
Modify or replace the magnetic catch assembly in accordance with Piper Aircraft Service Bulletin No. 479B, dated March 23, 1976, or an equivalent method approved by Chief, Engineering and Manufacturing Branch, FAA, Southern Region.
This amendment becomes effective June 23, 1980.