AD 88-23-02

88-23-02 MESSERSCHMITT-BOLKOW-BLOHM (MBB) GmbH: Amendment 39- 6027. Applies to MBB BK-117 A-1, A-3, and A-4 series helicopters certificated in any category. (Docket No. 85-ASW-1)

Compliance is required within 30 days after the effective date of this AD, unless already accomplished.

To prevent possible hazards in flight associated with operation outside of approved operating limits, accomplish the following:

(a) Apply new VNE placards Part Numbers 117-740131.97, 117-740131.98, 117- 740131.99, or 117-740131.100, in place of the existing VNE placard in accordance with instructions contained in MBB Alert Service Bulletin MBB-BK 117-70-101, dated April 11, 1988.

(b) The placard required by paragraph (a) may be installed by a pilot who makes the appropriate maintenance record entries required by FAR Parts 43 and 91.

(c) An equivalent method of compliance with this AD may be used when approved by the Manager, Rotorcraft Directorate, Aircraft Certification Service, FAA, Fort Worth, Texas 76193-0100, or by the Manager, Brussels Aircraft Certification Office, AEU-100, c/o American Embassy, Brussels, Belgium, APO New York 09667-1011.

This procedure shall be accomplished in accordance with MBB Helicopter Alert Service Bulletin ASB-MBB-BK 117-70-101, dated April 11, 1988. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552 (a) and 1 CFR Part 51. Copies may be obtained from MBB, GmbH, Abt, Drehflugler, Postfach 801140, D-8000 Munchen 80, Federal Republic of Germany. Copies may be inspected at the Office of the Regional Counsel, FAA, 4400 Blue Mound Road, Fort Worth, Texas, or at the Office of the Federal Register, 1100 L Street, N.W., Room 8401, Washington, D.C.

This amendment, 39-6027, supersedes AD 85-02-04, Amendment 39-4989 as amended by AD 85-02-04 R1, Amendment 39-5793.

This amendment, 39-6027, becomes effective on November 28, 1988.