70-10-01 BEECH: Amdt. 39-986 as amended by Amendment 39-1222. Applies to all 99 Series Airplanes (Serial Numbers U-1 through U-114).
Compliance: Required as indicated, unless already accomplished.
To prevent a fire hazard, accomplish the following:
Within the next 50 hours' time in service after the effective date of the AD, modify the printed circuit boards in the edge lighted instrument panels in accordance with either Beechcraft Service Instruction No. 0203-351 or any other method approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Central Region.
Amendment 39-986 became effective May 12, 1970.
This Amendment 39-1222 becomes effective June 3, 1971.