AD 78-05-04

78-05-04 MCDONNELL DOUGLAS: Amendment 39-3150. Applies to DC-10-10, -10F, -30, -30F and -40 series airplanes, certificated in all categories.

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

a. To prevent a total Automatic Landing System disengagement below the alert height during a Category III approach because of a single failure, accomplish the following:

Incorporate the following revision in the applicable Flight Guidance Appendices IV, IVA and etc., of the FAA Approved Airplane Flight Manual documents MDC-J1010, MDC-J1030, MDC-J5830, MDC-J1040 and MDC-J2140:

Add the following as the last entry in Section I Limitations:

"Category III Automatic Landing

In addition to the Automatic Landing System Limitations listed above, the following limitation applies:

Do not use automatic landing system for Category III operation unless DC-10 Service Bulletin 34-84 or production equivalent is incorporated."

b. Equivalent modifications, procedures, or revisions may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.

This amendment becomes effective April 8, 1978.