AD 83-11-03 ACTIVE

83-11-03 PACIFIC SCIENTIFIC COMPANY, KIN-TECH DIVISION: Amendment 39-4662. Applies to Pacific Scientific flight attendant restraint system rotary buckle assemblies, Part Numbers 1107261-01, -05 and -09, manufactured prior to 1982.

Compliance required within 180 days from the effective date of this AD, unless previously accomplished.

To prevent the entrapment of occupants caused by the inability to release the restraint system assembly, accomplish the following:

a. Inspect flight attendant restraint systems to determine if Pacific Scientific rotary buckle as identified in Figure 1 of Pacific Scientific Service Bulletin 1107261-25-01 is installed.

b. If installed, determine if the old lower cover 1107270-01 or the new cover assembly 1107525-01 is installed. The cover is not identified with a part number; however, with the old cover only the two (2) attachment screw heads will be seen. The new cover assembly also has two (2) rivet upsets on the outside of the cover assembly and, in addition, the lap belt and/or inertia reel nameplate should be identified with the letter "M" after the assembly part number.

c. If the new cover assembly 1107525-01 is installed, no further action is required per this AD.

d. If the old cover 1107270-01 is installed, replace the old cover with the new 1107525-01 cover assembly and stamp or mark a suffix letter "M" next to part number on each lap belt and on inertia reel nameplate.

NOTE: Pacific Scientific Service Bulletin 1107261-25-01, Revision 1, dated June 1, 1982, pertains to this subject.

e. Alternate inspections, modifications or other actions which provide an equivalent level of safety may be used when approved by the Manager, Western Aircraft Certification Field Office, FAA, Northwest Mountain Region.

This amendment becomes effective July 18, 1983.