AD 75-08-08

75-08-08 MCDONNELL DOUGLAS: Amendment 39-2157. Applies to Douglas Model DC-10-10, -30, -30F, and -40 Series airplanes, certificated in all categories, with factory serial numbers as indicated in Douglas Service Bulletin No. 52-74, Revision 1, dated December 6, 1974, or later FAA-approved revisions.

To prevent inadvertent opening of Type A passenger doors (other than the most forward left and right doors) during taxi or in flight, accomplish the following:

(a) Prior to taxi from the terminal area, after the effective date of this AD, and after all passengers have been seated, all Type A passenger door (other than the most forward left and right doors) arming handles must be cycled to the armed position; then returned to the fully disarmed position; and then returned to the fully armed position. If any difficulty in operating the arming handles is experienced, the airplane must be corrected by maintenance personnel prior to further flight. The flight crew will be advised of the check accomplishment prior to takeoff. Operators shall advise flight crews and cabin attendants of the foregoing procedure by the most immediate and practicable means. The procedure is to be accomplished until the modification described in (b), below, is performed on all airplanes in the operator's fleet.

(b) On or before July 1, 1975, unless already accomplished, modify the door operating mechanism per Douglas Service Bulletin No. 52-74, dated September 28, 1973, or later FAA-approved revisions, or equivalent modifications approved by the Chief, Aircraft Engineering Division, FAA Western Region.

(c) Airplanes may be flown to a base for performance of maintenance required by this AD per FAR's 21.197 and 21.199, provided that, with respect to the door(s) identified as in need of maintenance, the emergency evacuation slides will either be removed or deactivated.

This supersedes the telegraphic AD, adopted March 1, 1975, and distributed by telegrams dated March 1, 1975.

This amendment becomes effective April 10, 1975.