AD 74-05-05

74-05-05 BEECH: Amendment 39-1796 as amended by Amendment 39-1841. Applies to Models 60 and A60 (Serial Numbers P-3 through P-246) airplanes now having or subsequently accruing 27 months in service from the date of the original airworthiness certification, except those airplanes having Beech P/N 60-420013-59 or Beech P/N 60-420013-652 pilot's side window installed.

Compliance: Required as indicated.

To prevent rapid decompression caused by failure of the pilot's side window accomplish the following:

A) Effective immediately, operation with the cabin pressurized is prohibited and prior to further flight (1) deactivate the pressurization system by securing the "TEST/DUMP" switch in the "Dump" position and install a placard on the control panel adjacent to the pressurized system controls reading:

"CABIN PRESSURIZATION PROHIBITED"

and (2) insert a copy of this AD in the limitation section of the airplane flight manual.

B) In lieu of Paragraph A(1) and (2), and prior to operation with cabin pressurization, replace existing pilot's side window with Beech P/N 60-420013-59 or Beech P/N 60-420013-652 pilot side window in accordance with Beechcraft Service Instructions No. 0594- 110, or later approved revisions or any equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.

C) Upon accomplishment of Paragraph B, reactivate the pressurization system and remove the placard and flight manual insertion required by Paragraph A.

Amendment 39-1796 became effective March 8, 1974.

This Amendment 39-1841 becomes effective May 17, 1974.