AD 46-44-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 120 | Airworthiness Directives; CESSNA Model 120 and 140 Airplanes |
| aircraft | Cessna Aircraft Company | 140 | Airworthiness Directives; CESSNA Model 120 and 140 Airplanes |
Unsafe Condition
The engine mounting bolts may pull through the 1 1/2-inch diameter x 0.049-inch plate welded to the front of each fitting, leading to engine detachment.
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Required Actions
Replace each of the four internal wrenching bolts with AN 6 bolts (AN 6-47 at upper fittings, AN 6-35 at lower fittings) and install special offset washers made of 4130 steel. Add an AN 960-616 washer between the nut and AN 970-6 washer at the front face of the rubber bushing.
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Compliance Time
prior to January 1, 1947
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Affected Aircraft
Cessna Model 120 and 140 aircraft, serial numbers 8001 to 8517 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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