75-17-13 MESSERSCHMITT-BOLKOW-BLOHM.: Amendment 39-2315. Applies to Messerschmitt-Bolkow-Blohm (MBB) Models BO-105A and BO-105C helicopters, certificated in all categories, incorporating tail rotor blade P/N 105-31742, Serial Numbers 548 and lower.
Compliance is required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished in accordance with MBB BO-105 Service Bulletin No. 30-8.
To prevent failure of the tail rotor blade tip cap, inspect tail rotor blades for condition, modify as prescribed, and return to service, in accordance with paragraph 2 of MBB BO-105 Service Bulletin No. 30-8, dated July 5, 1974, or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region.
This amendment becomes effective August 18, 1975.