Special Airworthiness Bulletin on Propeller Controlling System for Hartzell Propellers

April 18th, 2014

This Special Airworthiness Information Bulletin NE-14-15 alerts you, owners, operators, and certificated repair facilities of aircraft equipped with Hartzell Propeller, Inc. various propeller models that have certain serial numbers and part numbers (P/N) of the potential for corrosion of the guide rods. This corrosion could lead to inability to adjust the pitch of your propeller. A detailed list of effectivity can be found in Hartzell Propeller Alert Service Bulletin (ASB) HC-ASB-61-351. At this time 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. pdf icon NE-14-15.pdf


AD for Low-pressure compressor case ice impact panels on Rolls Royce Engines

April 18th, 2014

The FAA adopting a new airworthiness directive 2014-08-05 (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-715A1-30, BR700-715B1-30, and BR700-715C1-30 turbofan engines. This AD requires replacement of the low-pressure compressor (LPC) case ice impact panels. This AD was prompted by a report of a partial de-bonding of the LPC case ice impact panels during an engine shop visit. They are issuing this AD to prevent failure of the LPC case ice impact panels, which could result in damage to the engine and loss of control of the airplane. DATES: This AD becomes effective May 23, 2014. pdf icon 2014-08-05.pdf


AD on Main Hydraulic System for Sikorsky Aircraft S-92A Helicopters

April 18th, 2014

The FAA adopting a new airworthiness directive 2014-07-04 (AD) for Sikorsky Model S-92A helicopters. This AD requires, initially and each time the clamps are removed, inspecting for chafing between the electrical wires and the hydraulic lines and, if there is chafing between the wires or lines, before further flight, replacing the unairworthy wires or lines with airworthy wires or lines. Also, this AD requires inspecting each clamp for correct installation, and if a clamp is incorrectly installed or missing, before further flight, correctly installing the clamps. This AD is prompted by chafing between high voltage electrical wiring and hydraulic lines that led to two fires in the top deck of the helicopter, which does not have fire detection nor extinguishing capability. The actions specified by this AD are intended to detect any chafing between the electrical wires and the hydraulic lines that could result in a fire and subsequent loss of control of the helicopter. DATES: This AD becomes effective May 1, 2014. pdf icon 2014-07-04.pdf


Special Airworthiness Bulletin on Powerplant and Salt Encrustation on Sikorsky S-92A Helicopters

April 18th, 2014

This Special Airworthiness Information Bulletin NE-14-14 alerts you, owners, operators, and certificated repair facilities of the possibility of salt encrustation and engine performance degradation while operating the Sikorsky Aircraft Corp. S-92A in a heavy salt spray environment. At this time, 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. pdf icon NE-14-14.pdf


Replacement AD on Hydromechanical metering unit for Turbomeca Arriel 2B1 Engines

April 14th, 2014

The FAA is superseding airworthiness directive (AD) 2007-19-09R1 for all Turbomeca S.A. Arriel 2B1 turboshaft engines that do not have modification TU157 incorporated. AD 2007-19-09R1 required replacement of the hydromechanical metering unit (HMU) with a serviceable HMU. This AD requires HMU replacement; reduction of the compliance interval; and inclusion of the power turbine C2 cycle consumption rate when determining compliance times. This AD was prompted by reports of ruptures on HMU constant delta pressure valves that have less than 2,000 hours in service. They are issuing this AD to prevent failure of the HMU, which could lead to damage to the engine, and damage to the aircraft. The New AD is 2014-07-06 DATES: This AD is effective May 15, 2014. pdf icon 2014-07-06.pdf