62-24-05 MARECO SAFETY BELTS: Amdt. 503 Part 507 Federal Register November 3, 1962. Applies to All Aircraft Equipped With Mareco Model 15-1 Safety Belts Which Are Identified on the Manufacturer's Identification Label on the Safety Belt as Being Manufactured in the Third and Fourth Quarters of 1959 and the First and Second Quarters of 1960.
Compliance required within the next 100 hours' time in service after the effective date of this AD.
Service difficulties with the Mareco Model 15-1 safety belt assemblies have occurred wherein the buckle locking cam became disengaged when tension on the belt assembly was relieved and would not reengage upon application of tension to the belt assembly due to the cam spring slipping from its retention slot. Therefore, the following is required:
Replace Mareco Model 15-1 safety belts manufactured in the third and fourth quarters of 1959 and the first and second quarters of 1960, or modify with an FAA approved modification to preventthe slipping of the cam spring from its retaining end slot and to correct the misalignment between the cam and buckle frame. When an FAA approved modification is made after the effective date of this AD, the buckle frame or cam lever shall be permanently marked "MOD." followed by the date of modification.
NOTE: Belts which were modified prior to the effective date of this AD in accordance with an FAA approved modification and identified with an embossed "X" are acceptable.
This directive effective December 4, 1962.