80-13-09 MCDONNELL DOUGLAS: Amendment 39-3811. Applies to McDonnell Douglas Model DC-10-10, -10F, -30, -30F and -40 Series Airplanes certificated in all categories utilizing Air Cruisers Part No. 24D30051 series passenger evacuation systems with the following serial numbers: \n\n\tLeft Hand Door: Air Cruisers Company P/N 24D30051 series, all serial numbers prior to S/N 1531, except 1508, 1510, 1511, 1515, 1519, 1521, 1523 and 1525. \n\n\tRight Hand Door: Air Cruisers Company P/N 24D30051 series, all serial numbers prior to S/N 1630, except 1605, 1611, 1613, 1615, 1619, 1621 and 1623. \n\n\tCompliance required within next eighteen (18) calendar months after the effective date of this AD, unless already accomplished. \n\n\tTo prevent improper deployment of the Air Cruisers Company emergency evacuation system due to delay in separation of the velcro tracking restraint device, accomplish the following: \n\n\ta.\tModify the affected evacuation system assemblies in accordance with Part 2, Accomplishment Instructions, of Air Cruisers Company Service Bulletin No. 25-75 dated January 24, 1980. \n\n\tb.\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of modifications required by this AD. \n\n\tc.\tAlternative modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region. \n\n\tThis amendment becomes effective August 30, 1980.