Safety Rules and Regs

Air Safety Week, May 19, 2008

AD 2008-10-51; Docket No. FAA-2008-0544; Directorate Identifier 2008-NM- 099-AD Emergency Airworthiness Directive (AD) 2008-NM-099-AD is sent to all owners and operators of all Dornier Model 328-100 and -300 airplanes. Background: The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, notified the FAA that an unsafe condition may exist on all Dornier Model 328-100 and -300 airplanes. The EASA advises that, during a routine inspection, cracks were found in the lower wing panel of the rear trailing edge (inboard and outboard of flap lever arm 1 (rib 5)) on a Model 328-100 airplane. Subsequent inspection of the other Model 328-100 airplanes in the same fleet revealed several more airplanes with cracks at the same location. The cause of the cracking is unknown. This condition, if not corrected, could result in structural failure of the affected wing panel, possible separation of the wing from the airplane, and consequent loss of control of the airplane. Explanation of Relevant Service Information: 328 Support Services GmbH has issued Dornier Alert Service Bulletins ASB-328J-57-015 (for Model 328-300 airplanes), and ASB-328-57-037 (for Model 328-100 airplanes), both Revision 1, both dated May 8, 2008. The service bulletins describe procedures for detailed visual and eddy current inspections of both the left- hand (LH) and right-hand (RH) lower wing panel of the rear trailing edge (inboard and outboard of flap lever arm 1 (rib 3 and rib 5)) for cracks. The EASA mandated the service bulletins and issued EASA airworthiness directive 2008-0087-E, dated May 8, 2008, to ensure the continued airworthiness of these airplanes in Europe.

Airworthiness Directives; Sikorsky Aircraft Corporation Model S-61A, S- 61D, S-61E, and S-61V Helicopters Final rule. SUMMARY: This amendment adopts a new airworthiness directive (AD) for the specified Sikorsky Aircraft Corporation (Sikorsky) model helicopters that requires installing an electric chip detector on each engine and an on-board chip detector annunciation system. The AD also requires revising the Rotorcraft Flight Manual (RFM) to add procedures for crew response to the illumination of an on-board chip detector warning light. This AD also requires testing the engine chip detector system at specified intervals. This amendment is prompted by reports of Number 5 engine bearing failures. Failure of the bearing resulted in erratic movement of the high-speed, engine- to-transmission shaft (shaft), an oil leak, an in-flight fire, and an emergency landing. The actions specified by this AD are intended to detect an impending bearing failure, which if undetected and not addressed by appropriate crew action may result in an oil leak, a severed shaft housing, an uncontained in- flight fire, and a subsequent emergency landing.

Airworthiness Directives; Dassault Model Mystere-Falcon 50 Airplanes

PDF Copy (If Available): Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated 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: This Airworthiness Directive (AD) is issued following the discovery of a risk of chafing between an electrical feeder bundle and a bus bar under the circuit breaker panel. Most of the time, this possible chafing would be dormant and would lead to an uneventful loss of segregation within the different electrical system components. However, missing segregation combined with additional electrical failures may impair flight safety.

Airworthiness Directives; Agusta S.p.A. Model A109C, A109E, and A109K2 Helicopters Final rule; request for comments. SUMMARY: This document supersedes Airworthiness Directive (AD) 2001-24-07 R1 and adopts AD 2007-26-52, which was sent previously to all known U.S. owners and operators of Agusta S.p.A. (Agusta) Model A109C, A109E, and A109K2 helicopters by individual letters. This AD requires inspections for swelling, deformation, bonding separation, or a crack on each main rotor blade

(MRB) with a certain tip cap installed, and if any of these conditions are found that exceed the prescribed limits, replacing the MRB before further flight. This amendment is prompted by a report of the in-flight loss of part of a tip cap. The actions specified in this AD are intended to prevent an increase in vibration of the MRB and subsequent loss of control of the helicopter.

Airworthiness Directives; Pacific Aerospace Limited Model 750XL Airplanes Correction In rule document E8-7167 beginning on page 19967 in the issue of Monday, April 14, 2008 make the following correction: On page 19968, in US dollars 39.13(f), in the second line, ''service May 19, 2008'' should read ''service after May 19, 2008''.

Airworthiness Directives; Pacific Aerospace Limited Model FU-24 Airplanes