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.