AD 74-14-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-36-285 | Airworthiness Directives; Piper Model PA-36-285 Airplanes |
Unsafe Condition
Bolts installed in the wing spar carry through assembly could be subject to deformation.
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Required Actions
Remove four AN 4C-11A bolts and corresponding nuts and washers from the spar center section carry through left and right end vertical stiffeners. Enlarge the four holes to 5/16" +.005 -.001 diameter and install AN5-11A bolts with specified washers and nuts, torqued to 100-140 inch pounds. If hole elongation or wear persists, replace or repair damaged parts per FAA approval.
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Compliance Time
within the next 25 hours time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
Piper Model PA-36-285 airplanes, serial numbers 36-7360001 through 36-7460016
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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