Federal Aviation Administration March 9, 2006 – Federal Register Recent Federal Regulation Documents

Airworthiness Directives; Turbomeca Arriel 2B Series Turboshaft Engines
Document Number: E6-3352
Type: Proposed Rule
Date: 2006-03-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for Turbomeca Arriel 2B, 2B1, and 2B1A turboshaft engines. This proposed AD would require visually inspecting the splines of the high- pressure (HP) pump drive gear shaft and coupling shaft assembly for wear. This proposed AD results from reports of uncommanded in-flight shutdowns of engines. We are proposing this AD to detect wear on the splines of the HP pump drive gear shaft and coupling shaft assembly, which could interrupt the fuel flow and cause an uncommanded in-flight shutdown of the engine on a single-engine helicopter. The in-flight shutdown of the engine could result in a forced autorotation landing or accident.
Airworthiness Directives; Airbus Model A310-200 and -300 Series Airplanes
Document Number: E6-3345
Type: Proposed Rule
Date: 2006-03-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Model A310-200 and -300 series airplanes. This proposed AD would require repetitive inspections for cracking of the flap transmission shafts, and replacing the transmission shafts if necessary. This proposed AD also would provide an optional terminating action for the repetitive inspections. This proposed AD results from reports of longitudinal cracks due to stress corrosion in the transmission shafts between the power control unit (PCU) and the torque limiters of the flap transmission system. We are proposing this AD to detect and correct cracking of the flap transmission shaft, which could compromise shaft structural integrity and lead to a disabled flap transmission shaft and reduced controllability of the airplane.
Airworthiness Directives; Rolls-Royce plc RB211 Trent 500, 700, and 800 Series Turbofan Engines; Correction
Document Number: 06-2244
Type: Rule
Date: 2006-03-09
Agency: Federal Aviation Administration, Department of Transportation
This document makes a correction to Airworthiness Directive (AD) 2006-05-01. That AD applies to Rolls-Royce plc RB211 Trent 500, 700, and 800 series turbofan engines. We published AD 2006-05-01 in the Federal Register on March 1, 2006, (71 FR 10415). An incorrect engine model number exists in the compliance section, in two places. This document corrects the engine model number. In all other respects, the original document remains the same.
Airworthiness Directives; Aerospatiale Model ATR42-200, -300, and -320 Airplanes
Document Number: 06-2145
Type: Rule
Date: 2006-03-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA is adopting a new airworthiness directive (AD) for certain Aerospatiale Model ATR42-200, -300, and -320 airplanes. This AD requires doing repetitive inspections of the upper arms of the main landing gear (MLG) side braces for missing or inadequately bonded identification plates; doing an ultrasonic inspection of the upper arm of the MLG side brace for any defects and related investigative/ corrective actions if necessary; and replacing the side brace assembly with a modified part. This AD results from an operator who reported experiencing an unlock warning for the MLG on the right side of the airplane. We are issuing this AD to prevent cracking of the upper arms of the side braces of the MLG, which could result in failure of the MLG during landing and possible damage to the airplane and injury to the flightcrew and passengers.
Airworthiness Directives; Boeing Model 747 Airplanes
Document Number: 06-2144
Type: Rule
Date: 2006-03-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA is superseding three existing airworthiness directives (ADs) that apply to certain Boeing Model 747 airplanes. The existing ADs currently require repetitive inspections of the body station (BS) 2598 bulkhead, and corrective action if necessary. This new AD adds a requirement to modify the bulkhead, including a one-time inspection and corrective action if necessary, which terminates certain repetitive inspections. This AD also requires a post-modification inspection of the modified area. This AD results from new reports of cracking in all three areas that require inspection in accordance with the existing ADs. We are issuing this AD to prevent fatigue cracking of the BS 2598 bulkhead structure, which could result in inability of the structure to carry horizontal stabilizer flight loads, and loss of controllability of the airplane.
Airworthiness Directives; Boeing Model 777-200 Series Airplanes
Document Number: 06-2143
Type: Rule
Date: 2006-03-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 777-200 series airplanes. This AD requires installing a new washer between the lower wing surface and the jam nut of the sump drain valve assembly. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent energy from a lightning strike on the bushing for the sump drain valve from arcing to the inside of the center fuel tank wall, which could create an ignition source in the fuel tank and result in a fuel tank explosion.
Airworthiness Directives; Boeing Model 747-200C, -200F, -400, -400D, and -400F Series Airplanes
Document Number: 06-2142
Type: Rule
Date: 2006-03-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 747-200C, -200F, -400, -400D, and -400F series airplanes. This AD requires repetitive inspections for cracks in the overlapping (upper) skin, upper fastener row of the lap joints of the fuselage skin in sections 41, 42, and 46; and related investigative and corrective actions, if necessary. This AD results from fatigue tests and an analysis that identified areas of the fuselage lap joints where fatigue cracks can occur. We are issuing this AD to detect and correct fatigue cracks in the overlapping (upper) skin, upper fastener row of the lap joints of the fuselage skin in sections 41, 42, and 46, which could adversely affect the structural integrity of the airplane.
Airworthiness Directives; BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146-RJ Airplanes
Document Number: 06-2141
Type: Rule
Date: 2006-03-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA is adopting a new airworthiness directive (AD) for certain BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146-RJ airplanes. This AD requires a one-time detailed inspection for corrosion of the hinge bracket assembly of the left and right main landing gear (MLG) doors, and corrective action if necessary. This AD results from in-service reports of hinge bracket failures on the MLG doors. We are issuing this AD to prevent failure of the hinge bracket on the MLG door, which could result in separation of the door, consequent structural damage to the airplane, and possible injury to people on the ground.