Results
2007-08-08: We are adopting a new airworthiness directive (AD) that supersedes AD 72-22-01, which applies to certain Raytheon Aircraft Company (RAC) (The Beech Aircraft Company and BEECH previously held Type Certificate Nos. 3A15, 3A16, 5A3, and A-777) Models 33, 35, 36, 45, and 95 series airplanes. AD 72-22-01 currently requires you to determine if each uplock roller is of the greasible type (one having a drilled and grooved inner race), replace any nongreasible uplock roller (one having a solid inner race) with the greasible type before further flight, install hollow zerk-ended mounting bolts on the uplock rollers, and repetitively lubricate the uplock mechanism. Since we issued AD 72- 22-01, there was a recent incident involving a RAC Model 95-B55B (T- 42A) airplane where a seizure of the uplock rollers occurred. This malfunction of the uplock rollers is addressed in AD 72-22-01. Thus, the FAA has determined that the actions of AD 72-22-01 should also apply to certain serial numbers ofthe Model 95-B55B (T-42A) airplanes. Consequently, this AD retains all the actions of AD 72-22-01, adds those Model 95-B55B (T-42A) airplanes to the applicability of this AD, and lists the specific serial numbers. We are issuing this AD to decrease the possibility of gear-up landings caused by seizure of the uplock rollers.
2007-07-05 R1: The FAA is revising an existing airworthiness directive (AD), which applies to all Boeing Model 777 airplanes. That AD currently requires a one-time inspection to determine the part number of the left and right air supply and cabin pressure controllers (ASCPCs), and installation of new ASCPC software if necessary. This AD requires those same actions. This AD also revises the existing AD to allow installation of an ASCPC with additional versions of software installed and to correct a part number reference. This AD results from a report of an ASCPC failure during flight. We are issuing this AD to prevent an ASCPC failure that could stop airflow into the airplane, inhibit the cabin altitude warning message, and cause an incorrect display of cabin altitude. These failures could result in depressurization of the airplane without warning. \n\nDATES: The effective date of this AD is April 18, 2007. \n\n\tOn April 18, 2007 (72 FR 15820, April 3, 2007), the Director of the Federal Register approved the incorporation by reference of Boeing Service Bulletin 777-36A0026, Revision 1, dated February 8, 2007. \n\n\tWe must receive any comments on this AD by June 18, 2007.
2021-22-16: The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC 155B and EC155B1 helicopters. This AD was prompted by the failure of a main gearbox (MGB) second stage planet gear. This AD requires replacing the MGB, or as an alternative, replacing the epicyclic reduction gear module for certain serial numbered planet gear assemblies installed on the MGB. This AD also requires inspecting the MGB magnetic plugs and MGB filter for particles, and for certain serial-numbered planet gear assemblies, inspecting the oil sump for particles. Depending on the outcome of these inspections, this AD requires further inspections and replacing certain parts. This AD also prohibits installing certain parts. The FAA is issuing this AD to address the unsafe condition on these products.
2005-13-25R1: The FAA is revising an existing airworthiness directive (AD) for Turbomeca S.A. Arriel 2B turboshaft engines with Modification TU62A incorporated. That AD currently requires initial and repetitive inspections, cleaning, lubrication, and checks for proper operation of the HMU acceleration controller axle. This AD requires the same actions, but removes engines incorporating TU132 from the applicability and adds an optional terminating action for the repetitive actions required in AD 2005-13-25. This AD results from the engine manufacturer releasing a service bulletin to introduce modification TU132. We are issuing this AD to prevent loss of control of engine fuel flow in manual control mode or mixed control mode, which can lead to engine overspeed, and in-flight engine shutdown resulting in a forced autorotation landing or accident.
2007-08-05: 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 airworthiness authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as fatigue damage with a crack propagation through the fastener line of the wing shroud box bottom panel, resulting in panel detachment and potential injuries to persons on the ground. We are issuing this AD to require actions to correct the unsafe condition on these products.
2021-24-07: The FAA is adopting a new airworthiness directive (AD) for certain ATR--GIE Avions de Transport R[eacute]gional Model ATR42 airplanes and Model ATR72 airplanes. This AD was prompted by a report of a certain procedure in the aircraft maintenance manual (AMM) that incorrectly described a visual inspection of the fire handle. This AD requires a general visual inspection of both engine fire handles and applicable corrective actions, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2021-22-03: The FAA is adopting a new airworthiness directive (AD) for all Diamond Aircraft Industries GmbH Model DA 42, DA 42 NG, and DA 42 M-NG airplanes. This AD was prompted by 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 identifies the unsafe condition as failure of the nose landing gear (NLG) actuator attachment lever and detachment from the NLG leg. This AD requires repetitively inspecting the NLG actuator attachment lever for cracks and damage and taking any necessary corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.
2007-08-04: The FAA is adopting a new airworthiness directive (AD) for McCauley Propeller Systems models 3A32C406/82NDB-X and D3A32C409/82NDB- X propellers, installed on Teledyne Continental Motors (TCM) IO-520, TSIO-520, or IO-550 reciprocating engines. These propellers are herein referred to as C406 and C409 propellers, respectively. This AD requires adding an operational revolutions per minute (RPM) restriction on the C406 and C409 propellers, and installing an RPM restriction placard in the cockpit. This AD also adds a 10,000-hour total time-in-service (TIS) life limit for these propellers. This AD also removes from service any propeller that has 10,000 hours or more total TIS, or that has an unknown total TIS. Also, this AD requires initial and repetitive propeller blade inspections for damage, and repair if necessary. This AD results from testing by the manufacturer that identified stress conditions that affect the fatigue life and damage tolerance of C406 and C409 propellers, wheninstalled on TCM IO-520, TSIO-520, or IO-550 reciprocating engines. We are issuing this AD to prevent blade or hub failure that could result in separation of a propeller blade and loss of control of the airplane.
2007-06-01 R1: We are clarifying information contained in Airworthiness Directive (AD) 2007-06-01, which supersedes AD 62-24-01 and applies to all Raytheon Aircraft Company (RAC) Beech Models 45 (YT-34), A45 (T- 34A, B45), and D45 (T-34B) airplanes. AD 2007-06-01 currently requires you to repetitively inspect, using the eddy current method, the front and rear horizontal stabilizer spars for cracks and replace any cracked stabilizer. We inadvertently left out the language in this AD that required replacement of any horizontal stabilizer spar found cracked prior to further flight although the procedures in the appendix made reference to corrective action. The replacement information was contained in the notice of proposed rulemaking (NPRM). This document adds this information already proposed back into the AD. We are issuing this AD to prevent failure of the front and/or rear horizontal stabilizer spars caused by fatigue cracks. This failure could result in stabilizer separation and loss of control of the airplane.
2007-07-08: The FAA is superseding an existing airworthiness directive (AD), which applies to Airbus Model A300 B2 and B4 series airplanes equipped with General Electric CF6-50 engines. That AD currently requires deactivating both thrust reversers and revising the airplane flight manual (AFM) to require performance penalties during certain takeoff conditions to ensure that safe and appropriate performance is achieved for airplanes on which both thrust reversers have been deactivated. This new AD requires one-time inspections of the directional pilot valve (DPV), the rocker arm and associated hardware, and corrective actions if necessary; reactivation of both thrust reversers; and repetitive inspections of the DPV and the associated control mechanism of the thrust reversers for incorrect assembly or excessive wear, and corrective actions if necessary. Accomplishing all of the actions would allow the removal of the AFM limitations in the existing AD. This AD results from reports indicatingthat the DPV was assembled incorrectly; further investigation revealed excessive wear on certain correctly assembled DPVs and the associated control mechanism. We are issuing this AD to prevent uncommanded in-flight deployment of a thrust reverser, which could result in reduced controllability of the airplane. DATES: This AD becomes effective May 10, 2007. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of May 10, 2007. On May 6, 2002 (67 FR 21569, May 1, 2002), the Director of the Federal Register approved the incorporation by reference of Airbus All Operators Telex A300/78A0023, dated April 5, 2002.