Airworthiness Directive · Amendment 39-9472 · The New Piper Aircraft, Inc. (Formerly Piper Aircraft Corporation) PA28 and PA32 Series Airplanes
The New Piper Aircraft, Inc. (Formerly Piper Aircraft Corporation) PA28 and PA32 Series Airplanes
Superseded. A later AD replaced this one: AD 2017-14-04. Comply with the one in force.
The following airplane models (all serial numbers), certificated in any category, that are equipped with oil cooler hose assemblies that do not meet TSO-C53a, Type D requirements: PA28-140 PA28-180 PA28R-201 PA28-235 PA32S-300 PA32R-301(SP) PA32-301T PA28-150 PA28S-180 PA28-151 PA28-236 PA32-301 PA32R-301(HP) PA28-160 PA28R-180 PA28-161 PA32-260 PA32R-300 PA32RT-300T PA28S-160 PA28R-200 PA28-181 PA32-300 PA32RT-300 PA32R-301T
This amendment supersedes Airworthiness Directive (AD) 76-25- 06, which currently requires replacing oil cooler hoses on The New Piper Aircraft, Inc. (Piper) Model PA28-140 airplanes, and inspecting for a minimum clearance between the oil cooler hose assemblies and the front exhaust stacks and adjusting if proper clearance is not obtained. This action maintains the clearance inspection and oil cooler hose replacements, requires this inspection and these replacements to be repetitive, and extends the applicability to include PA32 series and other PA28 series airplanes. It also provides the option of installing approved TSO-C53a, Type D oil cooler hose assemblies as terminating action for the repetitive inspection requirement. Numerous incidents/ accidents caused by oil cooler hose rupture or failure on the affected airplanes prompted this action. The actions specified by this AD are intended to prevent these oil cooler hoses from failing or rupturing, which could result in engine stoppage and subsequent loss of control of the airplane.
