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Aviation Alerts

We propose to supersede Airworthiness Directive (AD) 81–09–09, which applies to certain Meggitt (Troy), Inc. (previously known as Stewart Warner South Wind Corporation and as Stewart Warner South Wind Division) Model Series 8240 (Models 8240–A, 8240–C, 8240E, and 8248), 8253 (Models 8253–A, 8253–B, and 8253–C), 8259 (Models 8259–A, 8259–C, 8259– DL, 8259HL2, 8259HR2, 8259JR2, 8259L, and 8259M), and 8472 (Models 8472C and 8472D) combustion heaters. AD 81–09–09 currently  requires repetitive inspections of the combustion heater; repetitive general inspections of the combustion heater installation; and, for combustion heaters having 1,000 hours or more time-in-service (TIS), overhaul of the combustion heater.

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Airworthiness Directives; STEWART-WARNER (SOUTH WIND DIVISION): Applies to Combustion Heaters Model Series 8240, 8253, 8259, and 8472 marked as meeting the standards of FAA TSO-C20, installed in aircraft certificated in all categories

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The FAA is superseding Airworthiness Directive (AD) 96-20-07, which applies to certain B-Series Combustion Heaters Models B1500, B2030, B3040, and B4050 that are installed on airplanes. AD 96-20-07 currently requires you to repetitively test (pressure decay) the combustion tube and overhaul any heater that does not pass any test.

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The FAA is revising Airworthiness Directive (AD) 2004-25-16,
which applies to aircraft equipped with a fuel regulator shutoff valve
part number (P/N) 14D11, A14D11, B14D11, C14D11, 23D04, A23D04, B23D04,
C23D04, or P23D04 used with B1500, B2030, B2500, B3040, B3500, B4050,
or B4500 B-Series combustion heaters.

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This Special Airworthiness Information Bulletin (SAIB) advises aircraft operators, fixed base operators, FAA repair stations, flight standards district offices, and foreign civil aviation authorities that NATO grade F-24 jet fuel, as specified in NATO Standard AFLP–3747, "Guide Specifications (Minimum Quality Standards) for Aviation Turbine Fuels (F-24, F-27, F-34, F-35, F-37, F-40, and F-44)," Edition A, Version 1, is acceptable for use on aircraft and engines certificated for operation with ASTM International D1655 grade Jet A fuel1, provided the fuel system icing inhibitor (FSII) concentration in the specific batch of F-24 fuel meets the aircraft's operating limitations pertaining to FSII. Grade F-24 jet fuel meets all the performance requirements of D1655 grade Jet A fuel, but specifies a different FSII concentration range as compared to ASTM International D1655 grade Jet A fuel.

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.

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