ENGINE TRANSMISSION ADAPTER (MT).
3.9.1 Description (Figure 3-1, Index No. 9). The engine transmission adapter is externally splined
and connects the engine to the engine driveshaft.
3.9.2 Defects. Defects may occur anywhere on the surface of the adapter. Particular attention
shall be given to areas around bolt holes. No cracks are allowed.
3.9.3 Primary Method. Fluorescent Penetrant.
a. Fluorescent Penetrant
b. Black Light
220.127.116.11 Preparation of Helicopter. The helicopter shall be prepared for safe ground maintenance.
Partial inspection for cause (visual indications, sites of mechanical damage, corrosion, etc.) may
be performed on all exposed surfaces of the installed part using this procedure. If required, the
engine transmission adapter shall be removed in accordance with the applicable technical manuals
18.104.22.168 Access. Access is through the engine driveshaft hinged panels. See Figure 1-4 - CH-47:
5 and 6; MH-47: 26 and 27.
22.214.171.124 Preparation of Part. The part shall be thoroughly cleaned. Refer to Preparation of Part or
126.96.36.199 Marking and Recording of Inspection Results. Mark and record the inspection results as