AD 80-16-04

80-16-04 AIRESEARCH MANUFACTURING COMPANY OF ARIZONA: Amendment 39-3862. Applies to AiResearch TFE-731-2, -3, -3R engines manufactured prior to May 1980.

Compliance required as indicated, unless already accomplished.

To prevent separation of tie rod and potential massive engine failure, accomplish the following:

(a) Within 150 operating hours after the effective date of this AD, unless previously accomplished, compliance is required with Paragraph (c) for the following TFE-731 engines:

Model Serial Numbers TFE-731-2-1C 73142, 73159, 73215, 73240, 73293, 73345, 73348 thru 73361 TFE-731-2-2B 74145, 74153, 74159, 74161, 74175, 74201, 74218, 74271, 74284, 74328, 74329, 74331, 74332 thru 74336, 74339, 74341, 74342, 74344, 74348 thru 74351, 74355, 74356, 74358 thru 74362, 74375, 74431, 74448, 74821 TFE-731-3-1E 75138, 75143, 75177, 75179, 75183 thru 75186, 75190, 75191, 75192, 75214 TFE-731-3-1C 76108 TFE-731-3-1G 77166, 77167, 77174, 77176, 77177 TFE-731-3-1F/-1K 78115, 78130, 78131, 78132, 78134, 78137, 78138, 78139, 78145, 78146 TFE-731-3-1H 80107, 80118, 80121, 80176 TFE-731-2-2J 81101, 81102, 81104

(b) For all TFE-731-2, -3, -3R engines manufactured prior to May 1980, and not listed in Paragraph (a), compliance with Paragraph (c) is required at, or prior to, the next major periodic inspection (as defined in AiResearch Service Bulletin TFE-731-72-3105 or -3106), unless previously accomplished.

(c) Determine the serial number identification of the tie rod, P/N 3070065-1, installed in engines covered under Paragraphs (a) or (b). This determination can be made by reference to engine build records or by disassembly of the engine sufficient to gain access to the aft end of the tie rod. All tie rods of the following listed serial numbers must be removed from service and replaced with like serviceable parts:

6P11723 6P11747 6P11771 6P11795 6P21154 6P11724 6P11748 6P11772 6P11796 6P21155 6P11725 6P11749 6P11773 6P11797 6P21156 6P11726 6P11750 6P11774 6P11798 6P21157 6P11727 6P11751 6P11775 6P11799 6P21158 6P11728 6P11752 6P11776 6P11800 6P21159 6P11729 6P11753 6P11777 6P11801 6P21160 6P11730 6P11754 6P11778 6P11802 6P21162 6P11731 6P11755 6P11779 6P11803 6P21163 6P11732 6P11756 6P11780 6P11804 6P21164 6P11733 6P11757 6P11781 6P11805 6P21165 6P11734 6P11758 6P11782 6P11806 6P21166 6P11735 6P11759 6P11783 6P11807 6P21167 6P11736 6P11760 6P11784 6P11808 6P21168 6P11737 6P11761 6P11785 6P11809 6P21169 6P11738 6P11762 6P11786 6P11810 6P21170 6P11739 6P11763 6P11787 6P11811 6P21171 6P11740 6P11764 6P11788 6P11812 6P21172 6P11741 6P11765 6P11789 6P11813 6P21173 6P11742 6P11766 6P11790 6P11814 6P21174 6P11743 6P11767 6P11791 6P11815 6P21175 6P11744 6P11768 6P11792 6P11816 7P11849 6P11745 6P11769 6P11793 6P11817 7P11850 6P11746 6P11770 6P11794 6P11818(d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections required by this AD.

(e) Alternative inspections, 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.

This amendment becomes effective August 7, 1980.