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Aviation Alerts

This Special Airworthiness Information Bulletin (SAIB) alerts airframe manufacturers, navigation equipment manufacturers, and aircraft operators of any aircraft using Instrument Approach Procedures (IAPs) without a published vertical descent angle. This SAIB is not intended to prevent or inhibit manufacturers from providing advisory vertical guidance on IAPs.

August 2014- This Special Airworthiness Information Bulletin (SAIB) is to alert owners, operators, and
maintenance technicians of Piper Aircraft, Inc. (Piper) Models PA-28, PA-32, PA-34, PA-44, and
PA-46 series airplanes of an airworthiness concern, specifically structural deterioration and possible
collapse of the air inlet hose. The air inlet hose may be between the air filter and the fuel injector,
carburetor or carburetor heat box depending on the airplane model. A collapsed hose reduces airflow
to the engine and could result in a rough running engine or a loss of power.

This Special Airworthiness Information Bulletin (SAIB) informs the aviation industry of potential non-conforming Military Specifications (MS), Army Navy Standards (AN) and National Aerospace Standards (NAS) fasteners. The SAIB applies to manufacturers, owners, operators, and maintenance personnel of airplanes, rotorcraft, engines and appliances. This SAIB also asks the aviation industry to report fastener failures and other non-conformities. This bulletin focuses on MS 21042 nuts due to their wide usage in aviation, but is relevant to all other standard fasteners.
At this time, the airworthiness concern is not an unsafe condition and does not warrant an airworthiness directive (AD) action under Title 14 of the Code of Federal Regulations (14 CFR) part 39. However, a significant number of past ADs noted possible unsafe conditions caused by non-conforming fasteners.

We are revising Airworthiness Directive (AD) 99-26-19 that applies to certain The New Piper Aircraft, Inc. Model J-2 airplanes equipped with wing lift struts. AD 99-26-19 required repetitively inspecting the wing lift struts for dents and corrosion; repetitively inspecting the wing lift strut forks for cracks; replacing any dented or corroded wing lift strut; replacing any cracked wing lift strut fork; and repetitively replacing the wing lift strut forks at specified times for certain airplanes. AD 99-26-19 also required incorporating a ''NO STEP'' placard on the wing lift strut. Since we issued AD 99-26-19, we were informed that paragraph (c) had been misinterpreted and caused confusion. This AD clarifies the intent of the language in paragraph (c) of AD 99-26-19 and retains all other requirements of AD 99-26-19. We are issuing this AD to correct the unsafe condition on these products.

The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to certain aircraft equipped with wing lift struts. The list of affected airplanes in the Applicability section is incorrect. Several Piper Aircraft, Inc. Model PA-18 airplanes were inadvertently omitted from the final rule; however, those models were included in the notice of proposed rulemaking. This document corrects that error. In all other respects, the original document remains the same.

We are revising Airworthiness Directive (AD) 99-01-05 for certain aircraft equipped with wing lift struts. AD 99-01-05 required repetitively inspecting the wing lift struts for corrosion; repetitively inspecting the wing lift strut forks for cracks; replacing any corroded wing lift strut; replacing any cracked wing lift strut fork; and repetitively replacing the wing lift strut forks at a specified time for certain airplanes. AD 99-01-05 also required incorporating a ''NO STEP'' placard on the wing lift strut. Since we issued AD 99-01-05, we were informed that paragraph (c) had been misinterpreted and caused confusion. This AD clarifies the intent of the language in paragraph (c) of AD 99-01-05 and retains all other requirements of AD 99-01-05. We are issuing this AD to correct the unsafe condition on these products.

This Special Airworthiness Information Bulletin (SAIB) alerts you, owners and operators of certain Piper Aircraft, Inc. (Piper) Models PA-31*, PA-31-300, PA-31-325, and PA-31-350 airplanes, of cracking discovered in the wing main spar lower cap at the aircraft centerline spar splice plate. This SAIB also provides guidance on recommended inspections for these Piper airplane models at the damage location.
*Note: The Model PA-31 may also be identified as a PA-31-310, even though the PA-31-310 is not a model recognized by the Federal Aviation Administration (FAA) on the type certificate data sheet.
At this time, this airworthiness concern has not been determined to be an unsafe condition that would warrant AD action under Title 14 of the Code of Federal Aviation Regulations (14 CFR) part 39.

SUMMARY: We are revising Airworthiness Directive (AD) 99-26-19 that applies to certain The New Piper Aircraft, Inc. Model J-2 airplanes equipped with wing lift struts. AD 99-26-19 required repetitively inspecting the wing lift struts for dents and corrosion; repetitively inspecting the wing lift strut forks for cracks; replacing any dented or corroded wing lift strut; replacing any cracked wing lift strut fork; and repetitively replacing the wing lift strut forks at specified times for certain airplanes. AD 99-26-19 also required incorporating a ''NO STEP'' placard on the wing lift strut. Since we issued AD 99-26-19, we were informed that paragraph (c) had been misinterpreted and caused confusion. This AD clarifies the intent of the language in paragraph (c) of AD 99-26-19 and retains all other requirements of AD 99-26-19. We are issuing this AD to correct the unsafe condition on these products.

The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. AD 2013-13-01 applies to certain Piper Aircraft, Inc. Models PA-46-310P, PA-46-350P, PA-46R-350T, and PA-46-500TP airplanes. There is an incorrect reference to a paragraph designation, four instances of an incorrect reference to the paragraph in the service bulletin that references an airworthiness limitation, and an incomplete email address for the person to contact in the Related Information section. This document corrects those errors. In all other respects, the original document remains the same.

The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to all Piper Aircraft, Inc. Models PA-31, PA-31-325, and PA-31-350 airplanes. Table 1 of paragraph (g) lists the incorrect model/part number for the Model PA-31-350, tail pipe assembly, top. This document corrects that error. In all other respects, the original document remains the same.

This Special Airworthiness Information Bulletin (SAIB) informs owners, operators, and maintenance personnel of turbocharged, reciprocating engine-powered airplanes about the potential for in-flight fire as a result of failure of the exhaust system V-band coupling securing the tailpipe to the turbocharger, the wastegate overboard, or any other exhaust system V-band coupling.


The FAA has issued airworthiness directives (AD) in the past concerning V-band couplings for specific airplane models. These ADs remain in effect where applicable. For those airplanes not affected by a V-band coupling AD, this airworthiness concern is not considered an unsafe condition at this time that would warrant AD action under Title 14 of the Code of Federal Regulations, part 39.

We propose to revise airworthiness directive (AD) 99-26-19 
that applies to certain The New Piper Aircraft, Inc. Model J-2 
airplanes equipped with wing lift struts. AD 99-26-19 currently 
requires repetitively inspecting the wing lift struts for dents and 
corrosion; repetitively inspecting the wing lift strut forks for 
cracks; replacing any dented or corroded wing lift strut; replacing any 
cracked wing lift strut fork; and repetitively replacing the wing lift 
strut forks at specified times for certain airplanes. AD 99-26-19 also 
currently requires incorporating a ``NO STEP'' placard on the wing lift 
strut. Since we issued AD 99-26-19, we have been informed that 
paragraph (c) is being misinterpreted and causing confusion. This 
proposed AD would clarify the intent of the language currently in 
paragraph (c) of AD 99-26-19 and would retain all other requirements of 
AD 99-26-19. We are proposing this AD to correct the unsafe condition 
on these products.

This Special Airworthiness Information Bulletin (SAIB) alerts you, owners and operators of certain Piper Aircraft, Inc. Model PA-18 and PA-19 airplanes with magneto toggle switches located on the left cabin panel, of an airworthiness concern, specifically that the magneto toggle switches can be inadvertently turned off when operating nearby controls and cause a loss of power during takeoff and landing. This SAIB also provides guidance on where to locate and/or replace the magneto toggle switches to reduce the likelihood of their inadvertent shutoff in flight.

At this time, this airworthiness concern has not been determined to be an unsafe condition that would warrant AD action under Title 14 of the Code of Federal Aviation Regulations (14 CFR) part 39.

This Special Airworthiness Information Bulletin alerts you, owners, operators, and certificated repair facilities of Piper PA-24, Piper PA-28R-180, Piper PA-28R-200, and Mooney M20( ) airplanes, except for the Mooney M20(J), equipped with Hartzell Propeller spinner assemblies, part numbers (P/N) 835-54(P) or 835-58(P), of the potential for cracking of the spinner dome which could lead to failure and liberation of the spinner. The airworthiness concern is not an unsafe condition that would warrant airworthiness directive action under Title 14 of the Code of Federal Regulations (14 CFR) part 39.

This Special Airworthiness Information Bulletin (SAIB) alerts you, owners and operators of all
Lavia Argentina S.A. (LAVIASA) Model PA-25 (type certificate formerly held by Piper Aircraft, Inc.) airplanes and Piper Aircraft, Inc. Models PA-25, PA-28-140, -150, -160 and -180 airplanes, of an airworthiness concern, specifically that the vanes of induction system air boxes can break off in flight and lodge into carburetors, which would restrict air flow and reduce engine power.
At this time, this airworthiness concern has not been determined to be an unsafe condition that would warrant AD action under Title 14 of the Code of Federal Aviation Regulations (14 CFR) part 39.

This Special Airworthiness Information Bulletin (SAIB) is intended to remind owners and operators of any airplane with cable-driven flight controls of the importance of adhering to existing inspection procedures in the applicable maintenance or shop manuals.
At this time, this airworthiness concern is not considered an unsafe condition that would warrant airworthiness directive action under Title 14 of the Code of Federal Regulations (14 CFR), part 39.

We are adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc.
(type certificate previously held by The New Piper Aircraft Inc.) PA-28, PA-32, PA-34, and PA-44
airplanes. This AD was prompted by reports of control cable assembly failures that may lead to
failure of the horizontal stabilator control system and could result in loss of pitch control. This AD
requires inspections of the stabilator control system and replacement of parts as necessary. We are
issuing this AD to correct the unsafe condition on these products.

This Special Airworthiness Information Bulletin (SAIB) alerts registered owners, operators, and
certified repair facilities of all airplanes equipped with Continental Motors, Inc. (CMI) series engines
(all models) of the service instructions to inspect the connecting rod piston pin bushing installation at
each cylinder removal or any time piston pin bushing material is identified during routine
maintenance procedures.

This Special Airworthiness Information Bulletin (SAIB) alerts owners, operators, and certified repair
facilities of an airworthiness concern regarding certain pushrod shroud spring retainers, manufactured
by Engine Components International (ECi). The pushrod shroud spring retainers, part number (P/N)
AEL14995, may be installed on Lycoming Engines O-320, IO-320, O-360, IO-360, O-540, and IO-
540 series reciprocating parallel valve engines.

SUMMARY: We are adopting a new airworthiness directive (AD) for Lycoming Engines TSIO-540-
AK1A, and Continental Motors, Inc. TSIO-360-MB, TSIO-360-SB, and TSIO-360-RB reciprocating
engines, with certain Hartzell Engine Technologies (HET) turbochargers, model TA0411, part
number (P/N) 466642-0001; 466642-0002; 466642-0006; 466642-9001; 466642-9002; or 466642-
9006, or with certain HET model TA0411 turbochargers overhauled or repaired since August 29,
2012. This AD requires removing the affected turbochargers from service before further flight. This
AD was prompted by a report of a turbocharger turbine wheel that failed a static strength test at its
manufacturing facility.

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