Results
2001-12-18: This amendment adopts a new airworthiness directive (AD), applicable to certain CASA Model CN-235 series airplanes, that requires modification of the rigging of the engine control cable assembly and replacement of either the entire engine control cable assembly or a segment of the control cables. This amendment is prompted by issuance of mandatory continuing airworthiness information issued by a foreign airworthiness authority. The actions specified by this AD are intended to prevent fatigue of the engine control cables, leading to breakage of the cables, which could result in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
2020-05-01: The FAA is adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd. & Co KG (RRD) Trent 1000-AE3, Trent 1000- CE3, Trent 1000-D3, Trent 1000-G3, Trent 1000-H3, Trent 1000-J3, Trent 1000-K3, Trent 1000-L3, Trent 1000-M3, Trent 1000-N3, Trent 1000-P3, Trent 1000-Q3, and Trent 1000-R3 model turbofan engines. This AD requires initial and repetitive borescope inspections (BSI) of the high-pressure turbine (HPT) blades. This AD also requires replacement of HPT blades with parts eligible for installation when the HPT blades fail inspection or reach the new life limit. This AD was prompted by the manufacturer identifying that the HPT blades may fail prematurely. The FAA is issuing this AD to address the unsafe condition on these products.
92-06-02: 92-06-02 SAAB-SCANIA: Amendment 39-8182. Docket 91-NM-170-AD. Applicability: Model SF-340A series airplanes, Serial Numbers 004 through 159; and SAAB 340B series airplanes, Serial Numbers 160 through 259; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent impeded passenger evacuation during an emergency egress, accomplish the following: (a) Within 600 landings after the effective date of this AD, accomplish the following in accordance with SAAB Service Bulletin 340-52-014, dated April 16, 1991: (1) After removing the two main passenger door handle spring pins (roll pins), perform an inspection of the spring pin holes for proper hole tolerance. If the hole diameter is undersize or oversize, prior to further flight, repair in accordance with the service bulletin. (2) Replace the two spring pins on the main passenger door handle mechanism with new spring pins, and install additional locking bolts at the upper and lower door handles in accordance with the service bulletin. (b) An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM- 113, FAA, Transport Airplane Directorate. The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Standardization Branch, ANM-113. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (d) The inspection, repair, and replacement shall be done in accordance with SAAB Service Bulletin 340-52-014, dated April 16, 1991. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from SAAB-Scania AB, Product Support, S-581.88, Linkoping, Sweden. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC. (e) This amendment becomes effective on April 13, 1992.
90-24-03: 90-24-03 FAIRCHILD AIRCRAFT (SWEARINGEN AIRCRAFT): Amendment 39-6837. Final copy of Priority Letter 90-24-03. Docket No. 90-CE-69-AD. Applicability: SA26, SA226, and SA227 series airplanes (all serial numbers), certificated in any category. Compliance: Required within the next 15 hours time-in-service or 10 calendar days after receipt of this AD, whichever occurs first, unless already accomplished. To prevent aerodynamic vibration, structural deformation, and possible loss of control of the airplane, accomplish the following: (a) Visually inspect the rudder trim tab link assemblies (Part Numbers 27-42025-001 through 27-42025-009 as installed) as follows: (1) Remove the fairing strip between the vertical fin and rudder. (2) Check each connecting rod end for freedom of movement and corrosion around the bearing as follows: (i) Move the rudder trim system from full left to full right deflection and check for any indications of corrosion or binding in the rod end fittings. (ii) If necessary, remove the bolt connecting the actuator and each rod end and check the bearings for freedom of movement. (iii) Check the bolts connecting the rudder actuator to each rod end to insure each bolt is oriented vertically. (3) If either rod end is corroded, prior to further flight replace the affected rod end with a serviceable part. (4) If the rudder trim mechanism is incorrectly installed, or if either rod end bearing is binding, prior to further flight replace the affected connecting rod and rod end assembly with serviceable parts. (5) If corrosion or binding is not found, reinstall the fairing strip and return the airplane to service. NOTE 1: Fairchild Aircraft Service Notes 26-SN-061, 226-SN-162, and 227-SN-074 pertain to the subject of this AD. NOTE 2: Although not required by this AD, the inspections specified in this AD should be included in the regular aircraft maintenance program. (b)Airplanes may be flown in accordance to FAR 21.197 and 21.199 to a location where this AD may be accomplished. (c) An alternate method of compliance or adjustment of the compliance times that provides an equivalent level of safety may be approved by the Manager, Airplane Certification Office, Southwest Region, FAA, Fort Worth, Texas 76193-0150; Telephone (817) 624-5150. NOTE 3: The request should be forwarded through an FAA Maintenance Inspector, who may add comments and then send it to the Manager, Airplane Certification Office, Fort Worth, Texas 76193-0150. This amendment (39-6837, AD 90-24-03) becomes effective on January 25, 1991, as to all persons except those persons to whom it was made immediately effective by priority letter AD 90-24-03, issued November 20, 1990, which contained this amendment.
2007-26-11: We are adopting a new airworthiness directive (AD) for certain oxygen reserve cylinders. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country with which we have a bilateral agreement 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 information concerning the risk of high-pressure oxygen cylinder tearing with sudden emptying. These cylinders are used for missions at high altitudes or to ensure respiratory air for passengers feeling sick. It has been demonstrated that the material characteristics of the Aluminum Alloy 5283 (AA5283) from which the cylinders are manufactured deteriorate in the course of time and may possibly lead these oxygen cylinders to tear and abruptly vent aboard an aircraft. This unsafe condition requires immediate action due to the risk of oxygen cylinders exploding on board an aircraft and creating a fire hazard. This AD requires actions that are intended to address this unsafe condition.
94-14-22: This amendment adopts a new airworthiness directive (AD) that applies to de Havilland DHC-6 series airplanes. This action requires repetitively inspecting the horizontal stabilizer center hinge bracket for cracks, and replacing any cracked center hinge bracket. Several reports of cracks in the horizontal stabilizer center hinge bracket flange on the affected airplanes prompted this action. The actions specified by this AD are intended to prevent separation of the elevator control support from the airplane as a result of a cracked horizontal stabilizer center hinge bracket, which could result in reduced controllability of the airplane.
2020-04-11: The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-400 series airplanes. This AD was prompted by a report of a certain modification that causes interference with inspections that are intended to detect fatigue cracks. This AD requires repetitive low frequency eddy current (LFEC) inspections of a certain fuselage upper skin lap splice for cracks, repetitive high frequency eddy current (HFEC) \n\n((Page 13478)) \n\ninspections of a certain fuselage upper skin lap splice for cracks, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
2001-12-17: This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Model Hawker 800XP series airplanes, that requires an inspection to confirm the installation of rivets at fuselage stations 251.975, 262.35, 272.725, and 283.10, and installation of new rivets, if necessary. The actions specified by this AD are intended to detect and correct fatigue cracking of the fuselage skin, and consequent loss of cabin pressurization. This action is intended to address the identified unsafe condition.
2018-14-11: We are adopting a new airworthiness directive (AD) for all ATR-GIE Avions de Transport R(eacute)gional Model ATR72 airplanes. This AD was prompted by a determination that more restrictive maintenance instructions and airworthiness limitations are necessary. This AD requires revising the maintenance or inspection program, as applicable, to incorporate new or revised maintenance instructions and airworthiness limitations. We are issuing this AD to address the unsafe condition on these products.
94-14-04: This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 757 series airplanes. This action requires inspection to detect cracking of the lower spar chord of the engine strut, removal of the stiffener straps from the mid-chord, inspection of the fastener holes, and modification or repair. This amendment is prompted by a report of cracking in the lower spar chord of an engine strut. The actions specified in this AD are intended to prevent cracking in the lower spar chord of the engine strut, which could result in the inability of the strut to carry required engine support loads.
2008-01-03: The FAA is adopting a new airworthiness directive (AD) for certain Learjet Model 45 airplanes. This AD requires revising the Airworthiness Limitations section of the airplane maintenance manual to incorporate certain inspections and compliance times to detect fatigue cracking of certain principal structural elements (PSEs). This AD results from new and more restrictive life limits and inspection intervals for certain PSEs. We are issuing this AD to ensure that fatigue cracking of various PSEs is detected and corrected; such fatigue cracking could adversely affect the structural integrity of these airplanes.
2001-12-14: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-400 series airplanes, that requires an inspection to detect miswiring of diodes in the heating system of the pitot static probes, and corrective action, if necessary. The actions specified by this AD are intended to prevent reduced power to the heating system of the pitot static probes, leading to ice accumulation on the pitot static probes, which could result in erroneous airspeed or altitude indications to the flight crew, and consequent reduced operational safety in all phases of flight. This action is intended to address the identified unsafe condition.
2020-03-15: The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A321-211, -212, -213, -231, and -232 airplanes. This AD was prompted by a report of erroneous positioning of affected parts on the skin of the fuselage during the pre-drill phase, which could result in unwanted drill-starts. This AD requires inspections for the presence of unwanted drill-starts on affected parts, and an inspection for cracks and corrective action if necessary, 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.
94-14-01: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767 series airplanes, that requires replacement of the thrust reverser flow restrictor devices with one-way (check) valve restrictors. This amendment is prompted by reports of piston seal leakage found during actuator overhaul on certain Model 767 series airplanes. The actions specified by this AD are intended to prevent possible deployment of a thrust reverser in flight and subsequent reduced controllability of the airplane.
2007-26-18: 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: "An accumulator cylinder had material defects and suffered an in-flight burst failure causing damage to the aircraft structure.'' We are issuing this AD to require actions to correct the unsafe condition on these products.
2001-12-11: This amendment adopts a new airworthiness directive (AD), applicable to certain Bombardier Model DHC-7 series airplanes, that requires modification of the pressure hoses to the ground spoiler actuators. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent blockage of pressure hoses to the ground spoiler actuators, leading to uncommanded deployment of the ground spoilers, resulting in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
2020-03-19: The FAA is adopting a new airworthiness directive (AD) for certain Dassault Aviation Model MYSTERE-FALCON 20-C5, 20-D5, 20-E5, and 20-F5 airplanes. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products.
94-14-03: This amendment adopts a new airworthiness directive (AD), applicable to certain Nordskog water heaters and coffee makers. This amendment requires an inspection to determine whether certain discrepant pressure relief valves have been installed in certain galley water heaters and coffee makers; and either replacement of the discrepant valves, or discontinued use of the water heaters or coffee makers and installation of placards indicating that these units are not to be used. This amendment is prompted by reports of injuries to cabin crew members that resulted from explosions of galley water heaters. The actions specified by this AD are intended to prevent explosions of galley water heaters and coffee makers, and subsequent injuries to passengers or cabin crew members.
2007-26-16: We are adopting a new airworthiness directive (AD) for certain Cessna Model 680 airplanes. This AD requires inspecting the routing of the aft fairing wire bundle assembly for adequate separation between the wiring and the hydraulic line; inspecting for chafing or damage of the wire bundle assembly and for damage to the hydraulic line, and doing corrective actions if necessary. This AD results from an incident report which indicated that a hydraulic leak and wire chafing, including signs of heat damage, were found within the lower tail cone fairing area. Similar wire chafing has also been found on other airplanes. We are issuing this AD to detect and correct wire chafing, and inadequate separation of the wiring and hydraulic line, which could lead to electrical arcing and a hydraulic leak and could result in a potential source of ignition and consequent fire.
2020-03-24: The FAA is adopting a new airworthiness directive (AD) for certain Dassault Aviation Model MYSTERE-FALCON 20-C5, 20-D5, 20-E5, and 20-F5 airplanes. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate \n\n((Page 11290)) \n\nnew or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products.
2001-12-09: This amendment adopts a new airworthiness directive (AD), applicable to certain Dassault Model Mystere-Falcon 900 and Falcon 900EX series airplanes, that requires replacement of the protective screens of the underfloor structure boxes at frame 25. This amendment is necessary to prevent water from collecting and freezing in the structure boxes at frame 25, which could result in jamming of the flight controls and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
96-24-17 R1: This document clarifies information in airworthiness directive (AD) 96-24-17, which applies to Don Luscombe Aviation History Foundation (Luscombe) Models 8, 8A, 8B, 8C, 8D, 8E, 8F, T-8F airplanes. AD 96-24-17 currently requires installing new inspection holes, modifying the wing tip fairings, and inspecting the wing spars for intergranular corrosion. The actions specified in AD 96-24-17 are intended to prevent wing spar failure from intergranular corrosion, which could result in structural failure of the wings and loss of control of the airplane. The AD was published with an Appendix providing an alternative method of compliance. Since issuance of AD 96-24-17, the FAA has re-examined the Appendix and has determined that clarification of certain inspections procedures is needed. This action clarifies the procedures specified in the Appendix of AD 96-24-17.
94-14-02: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757 series airplanes, that requires tests of the thrust reverser system, and repair, if necessary; installation of a modification that would terminate those tests; and repetitive operational checks of that installation, and repair, if necessary. This amendment is prompted by results of a safety review, which revealed that in-flight deployment of a thrust reverser could result in a significant reduction in the controllability of the airplane. The actions specified by this AD are intended to prevent deployment of a thrust reverser in flight and subsequent reduced controllability of the airplane.
2007-26-20: The FAA is adopting a new airworthiness directive (AD) for PW PW4164, PW4168, and PW4168A turbofan engines with certain low pressure turbine (LPT) stage 4 disks, part number (P/N) 51N404, installed. This AD requires removing certain LPT stage 4 disks, listed by serial number at the next piece-part exposure or within 7,500 cycles-since-new (CSN). This AD results from a report of improperly manufactured LPT stage 4 disks. We are issuing this AD to prevent an uncontained engine failure due to low-cycle fatigue (LCF), which could result in damage to the airplane.
2001-12-13: This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-135 and EMB-145 series airplanes, that requires replacement of certain brake control units (BCU) with new units. The actions specified by this AD are intended to prevent uncommanded application of 50 percent braking in one pair of wheels, which could result in the airplane skidding off the runway. This action is intended to address the identified unsafe condition.