Federal Aviation Administration June 19, 2009 – Federal Register Recent Federal Regulation Documents

This document proposes adopting a new airworthiness directive (AD) for Sikorsky Model S-92A helicopters. The AD would require revising the Limitations section of the Rotorcraft Flight Manual (RFM) by clarifying that the Model S-92A helicopter was certificated as a transport category rotorcraft in both Categories A and B with different operating limitations for each category and must be operated accordingly. We have received reports that some operators are inappropriately operating Model S-92A helicopters using Category B limitations when the helicopter is configured with 10 or more passenger seats. Operating this helicopter when configured with 10 or more passenger seats and adhering to the less stringent limitations for the Category B configuration approved for a 9 or less passenger seat configuration does not maintain the FAA required minimum level of safety. This condition if not corrected, could result in operating under less stringent requirements.

We are adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. (Piper) PA-23 series airplanes and all PA-31 and PA-42 series airplanes. This AD establishes life limits for safety- critical nose baggage door components. This AD also requires you to replace those safety-critical nose baggage door components and repetitively inspect and lubricate the nose baggage door latching mechanism and lock assembly. This AD results from several incidents and accidents, including fatal accidents, where the nose baggage door opening in flight was listed as a causal factor. We are issuing this AD to detect and correct damaged, worn, corroded, or non-conforming nose baggage door components, which could result in the nose baggage door opening in flight. The door opening in flight could significantly affect the handling and performance of the aircraft. It could also allow baggage to be ejected from the nose baggage compartment and strike the propeller. This failure could lead to loss of control.

We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

The FAA is superseding an existing airworthiness directive (AD), which applies to the airplanes identified above. That AD currently requires revising the FAA-approved maintenance program to include a new airplane maintenance manual task that specifies a detailed inspection after each ram air turbine (RAT) retraction. That existing AD also currently requires, for certain airplanes, a one-time inspection to detect breaks in the bottom flange fitting of the RAT and corrective actions, if necessary; for certain airplanes, an adjustment of the ejection jack; and, for certain other airplanes, replacement of the aluminum part with an improved steel part. This AD also continues to require certain actions for additional airplanes and revising the FAA-approved maintenance program to include procedures for replacing the RAT swivel coupling fork fitting with a new steel part only. This AD results from a report that an additional swivel coupling of the RAT yoke fitting was found cracked during the accomplishment of the requirements of the existing AD. We are issuing this AD to prevent misrigging of the ejection jack of the RAT and to ensure removal of any RAT yoke fitting made from aluminum material. Such conditions could result in a broken or cracked swivel coupling and consequent failure of the RAT yoke fitting, which could result in the loss of RAT function and possible loss of critical flight control systems in the event of certain emergency situations.