Results
95-09-01: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 737-300, -400, and -500 series airplanes, that requires an inspection to determine the type of topcoat material currently on the insulation of the inner wall of the fan duct cowl (the firewall) of the thrust reversers, and application of an improved topcoat material, if necessary. This amendment is prompted by tests, which demonstrated that flames can penetrate the firewall if certain combinations of insulation and topcoat materials are used. The actions specified by this AD are intended to prevent failure of the fireproof insulation top coat installed on the firewalls of the thrust reverser fan cowls, which could result in degradation or loss of the firewall and lead to an uncontained engine fire.
2008-08-25: We are adopting a new airworthiness directive (AD) for certain Boeing Model 747-400F and -400 series airplanes. This AD requires installing drains and drain tubes to eliminate water accumulation in the dripshield above the M826 Card File in the main equipment center. This AD results from a report that water from the dripshield entered the card file and damaged a circuit card, causing the AFT CARGO FIRE MSG message to be illuminated and resulting in an air turn back. We are issuing this AD to prevent water from entering the card file and damaging a circuit card. Failure of one or more of the 15 fuel system circuit cards in the card file could cause loss of fuel management, which could cause unavailability of fuel. Failure of one or more of the 35 fire detection circuit cards could cause a false message of a fire, or no message of a fire when there is a fire.
2020-15-04: The FAA is adopting a new airworthiness directive (AD) for all GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, M601F, H80, H80-100, H80-200, H75-100, H75-200, H85-100, and H85-200 model turboprop engines. This AD was prompted by a review by the manufacturer that identified the possibility of a power turbine (PT) rotor overspeed and the uncontained release of PT blades. This AD requires installing a modified engine outlet system. The FAA is issuing this AD to address the unsafe condition on these products.
2001-16-22: This amendment adopts a new airworthiness directive (AD), applicable to all McDonnell Douglas Model DC-10-30 series airplanes modified by supplemental type certificate SA8452SW, that requires modification of the in-flight entertainment (IFE) system and revision of the Airplane Flight Manual and the Inflight Manual. This action is necessary to ensure that the airplane crew is able to remove electrical power from the IFE system when necessary and is advised of appropriate procedures for such action. Inability to remove power from the IFE system during a non-normal or emergency situation could result in inability to control smoke or fumes in the airplane flight deck or cabin. This action is intended to address the identified unsafe condition.
2008-08-24: We are adopting a new airworthiness directive (AD) for certain Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes. This AD requires replacing the drain tube assemblies and support clamps on the aft fairing of the engine struts. This AD results from reports of failure of the drain tube assembly and clamp on the aft fairings of an engine strut. We are issuing this AD to prevent failure of the \ndrain tube assemblies and clamps on the aft fairings of the of the engine struts. Such a failure could allow leaked flammable fluids in the drain systems to discharge on to the heat shields of the aft fairings of the engine struts, which could result in an undetected and uncontrollable fire.
95-09-02: This amendment adopts a new airworthiness directive (AD) that is applicable to AlliedSignal Engines (formerly Textron Lycoming) LTS101 series turboshaft and LTP101 series turboprop engines. This action supersedes priority letter AD 94-19-01 that currently requires initial and repetitive inspections for wear of the engine fuel pump internal drive splines, and replacement of engine fuel pumps that exhibit wear beyond specified limits. This action clarifies the original requirements of the current AD by providing additional information to emphasize that the AD only applies to engines installed on single-engine aircraft and to emphasize that removed fuel pumps must be returned to the manufacturer for inspection. In addition, this action defines a serviceable part. This amendment is prompted by requests to clarify interpretations of the current priority letter AD. The actions specified by this AD are intended to prevent engine fuel pump failure, which can result in total engine power loss and possible loss of the aircraft.
2001-16-20: This amendment adopts a new airworthiness directive (AD), applicable to all Boeing Model 767-200 series airplanes modified by supplemental type certificate SA5134NM, that requires modification of the in-flight entertainment (IFE) system. This action is necessary to prevent the inability of the flight crew to remove power from the IFE system when necessary. Inability to remove power from the IFE system during a non-normal or emergency situation could result in inability to control smoke or fumes in the airplane flight deck or cabin. This action is intended to address the identified unsafe condition.
2020-15-08: The FAA is adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) Trent 1000-A, Trent 1000-A2, Trent 1000-AE, Trent 1000-AE2, Trent 1000-C, Trent 1000-C2, Trent 1000- CE, Trent 1000-CE2, Trent 1000-D, Trent 1000-D2, Trent 1000-E, Trent 1000-E2, Trent 1000-G, Trent 1000-G2, Trent 1000-H, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 model turbofan engines. This AD was prompted by the manufacturer identifying 38 low-pressure compressor (LPC) front cases that have non-optimal properties that could inhibit their ability to contain certain engine failures. This AD requires removing the LPC front case from service and replacing it with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.
89-10-08: 89-10-08 AEROSPATIALE: Amendment 39-6205. Applicability: Model ATR-42 series airplanes, Serial Numbers 003 through 093, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent improper functioning of Honeywell-Sperry navigation equipment and to prevent incompatible combinations of this equipment, accomplish the following: A. Within 10 days after the effective date of this AD, accomplish the following in accordance with Aerospatiale Service Bulletin ATR42-34-0027, dated April 6, 1988: 1. Inspect Honeywell-Sperry Symbol Generator Units (SGU) for unauthorized mixing of units in accordance with paragraph C.(1) of the service bulletin. Correct any unauthorized mixing of units prior to further flight. 2. Inspect Honeywell-Sperry navigation equipment for unauthorized mixing of Attitude Heading Reference Units (AHRU) and SGU in accordance with paragraphs C.(2) and C.(3) of the service bulletin. For airplanes with unauthorized mixing of AHRU and SGU, prior to further flight, insert the following into the Limitations Section 2 of the Airplane Flight Manual (AFM). This can be accomplished by inserting a copy of this AD into the AFM and into the Flight Crew Operations Manual: "Approach operations are limited to Category 1 or higher weather minima." Operate the airplane in accordance with this limitation until the requirements of paragraph B. of this AD are accomplished, at which time this limitation may be removed from the AFM. B. Within 120 days after the effective date of this AD, accomplish the following: 1. Replace the Digital Air Data Computer (DADC), in accordance with Aerospatiale Service Bulletin ATR42-34-0024, Revision 1, dated August 30, 1988. 2. Replace the Attitude Heading Reference System (AHRS), in accordance with Aerospatiale Service Bulletin ATR42-34-0025, Revision 1, dated August 30, 1988. 3. Replace the Symbol Generator Units (SGU),in accordance with Aerospatiale Service Bulletin ATR42-34-0026, Revision 1, dated August 30, 1988. C. An alternate means 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, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments and then send it to the Manager, Standardization Branch, ANM-113. D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or at the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6205, AD 89-10-08) becomes effective on June 9, 1989.
95-08-06: This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Corporate Jets Models DH/BH/HS/BAe 125-1A to -700A series, BAe 125-800A, and Hawker 800 series airplanes, that requires replacement of the existing standby static inverter with an inverter that incorporates a circuit board assembly sealed with a conformal coating. This amendment is prompted by reports of failure of the standby static inverter caused by electrical shorting from moisture condensing on the printed circuit boards (PCB), due to aberrations in the PCB conformal coating. The actions specified by this AD are intended to prevent malfunction of the standby static inverter due to exposure to moisture caused by inadequate insulation coating of the circuit board assembly. Malfunction or failure of the standby static inverter, when its use is necessary, could result in the loss of electric power for certain equipment critical to safety of flight.