Results
2006-07-23: The FAA is adopting a new airworthiness directive (AD) for all Boeing Model 757 airplanes. This AD requires repetitive measurements of the freeplay of each of the three power control units (PCUs) that move the rudder; repetitive lubrication of rudder components; and corrective actions if necessary. This AD results from a report of freeplay-induced vibration of the rudder. The potential for vibration of the control surface should be avoided because the point of transition from vibration to divergent flutter is unknown. We are issuing this AD to prevent excessive vibration of the airframe during flight, which could result in divergent flutter and loss of control of the airplane.
86-01-05: 86-01-05 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-5210. Applies to Lockheed Model L-1011-385 series airplanes, certificated in any category, equipped with Dynamic Controls Corporation oxygen initiator sequence timer switch(es), Part Numbers 11035-2/-3. Compliance is required as indicated, unless previously accomplished. To prevent malfunction of the passenger oxygen system when activated, due to dormant shorted transient suppression capacitors in the oxygen initiator sequence timer switch(es), accomplish the following: A. Within 30 days after the effective date of this AD, perform a resistance check of oxygen initiator sequence timer switch(es) in accordance with Lockheed Service Bulletin 093- 35/041, Part I, dated December 18, 1985, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. B. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service information from the manufacturer may obtain copies upon request to Lockheed-California Company, P. O. Box 551, Burbank, California 91520, Attention: Commercial Support Contracts, Dept. 63-11, U-33, B-1. These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California. This amendment becomes effective January 21, 1986.
2018-26-01: We are superseding Airworthiness Directive (AD) 2018-18-01 for all CFM International S.A. (CFM) Model CFM56-7B turbofan engines. AD 2018-18-01 required initial and repetitive inspections of certain fan blades and, if they fail the inspection, their replacement with parts eligible for installation. This AD requires the same initial and repetitive inspections but revises the compliance time for the initial inspections and revises the installation prohibition based on the updated compliance time. This AD was prompted by further analysis by the manufacturer that indicated a need to reduce the initial fan blade inspection interval based on an ongoing root cause investigation of an April 2018 engine failure. We are issuing this AD to address the unsafe condition on these products.
87-05-07: 87-05-07 CASA: Amendment 39-5560. Applies to the CASA Model C-212 series airplanes, serial numbers as listed in CASA Service Bulletin 212-25-32, dated October 23, 1985, certificated in any category. Compliance is required within 8 months after the effective date of this AD. To prevent obstruction of an evacuation path to an emergency exit, accomplish the following, unless previously accomplished: A. Modify the attendant's seat in accordance with CASA Service Bulletin 212-25-32, dated October 23, 1985. B. 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. C. 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 modification required by this AD. All persons affected by this directive who have not already received the appropriate service document from the manufacturer may obtain copies upon request to Construcciones Aeronauticas S.A., Getafe, Madrid, Spain. This document may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This amendment becomes effective March 25, 1987.
99-26-19: This amendment adopts a new airworthiness directive (AD) that applies to certain The New Piper Aircraft, Inc. (Piper) J-2 series airplanes equipped with wing lift struts. This AD requires repetitively inspecting the wing lift struts for dents and corrosion and the wing lift strut forks for cracks; replacing any strut found with corrosion or dents, or forks with cracks; and repetitively replacing the wing lift strut forks. This AD also requires incorporating a "NO STEP" placard on the lift strut. This AD is the result of the Federal Aviation Administration (FAA) inadvertently omitting the J-2 series airplanes from the applicability of AD 99-01-05. The actions specified by this AD are intended to prevent in-flight separation of the wing from the airplane caused by wing lift struts with dents or corrosion or wing lift forks with cracks, which could result in loss of control of the airplane.
86-08-07: 86-08-07 TELEDYNE CONTINENTAL MOTORS: Letter issued April 21, 1986. Applies to TSIO-520- BE reciprocating engines with the following serial numbers installed on Piper PA-46 (Malibu) airplanes: ENGINE SERIAL NUMBERS 528026 528222 528233 528246 528085 528223 528234 528252 528205 528224 528235 528253 528208 528225 528236 528254 528215 528226 528237 528255 528216 528227 528238 528256 528217 528228 528239 528259 528219 528229 528240 528260 528220 528230 528242 528263 528221 528231 528243 Prior to further flight, remove the engine driven fuel pump assembly (P/N 646571-1) and replace with fuel pump assembly (P/N 649374-1). Upon request, an equivalent means of compliance with the requirements of this priority letter AD may be approved by the Manager, Atlanta Aircraft Certification Office, 1075 Inner Loop Road, College Park, Georgia 30337. This airworthiness directive is effective upon receipt.
2006-07-19: The FAA is adopting a new airworthiness directive (AD) for certain Aerospatiale Model ATR42 airplanes and Model ATR72 airplanes. This AD requires installing protective ramps on trim panel 110VU; and inspecting the protective guard of the standby pitch trim switch to determine if it is missing, damaged, or ineffective, and doing the corrective action if necessary. This AD results from a finding that the protective guard of the standby pitch trim switch, which is installed on the center pedestal, could be damaged or missing. We are issuing this AD to prevent inadvertent activation of the standby pitch trim, which could result in pitch trim runaway and consequent reduced controllability of the airplane.
2006-07-20: The FAA is adopting a new airworthiness directive (AD) for Turbomeca Makila 1 A2 turboshaft engines. This AD requires upgrading the software version of the digital electronic control. This AD results from Turbomeca determining that Makila 1 A2 turboshaft engines with software version 9 installed in the digital electronic control unit (DECU), under certain conditions, could experience a free turbine overspeed and uncontained failure. We are issuing this AD to prevent overspeed and uncontained failure of the free turbine and damage to the helicopter.
99-01-05: This amendment supersedes Airworthiness Directive (AD) 93-10-06, which currently requires repetitively inspecting the wing lift struts and wing lift strut forks for cracks or corrosion on all airplane models of The New Piper Aircraft, Inc. (Piper) that are equipped with wing lift struts, and replacing any strut or fork found cracked or corroded. This AD clarifies certain requirements of AD 93-10-06, eliminates the lift strut fork repetitive inspection requirement on the Piper PA-25 series airplanes, incorporates models inadvertently omitted from AD 93-10-06, and requires fabricating and installing a placard on the lift strut. This AD results from reports, questions, and information received from the field on AD 93-10-06, which show a need to clarify and add information that will more fully achieve the safety intent of that AD. The actions specified by this AD are intended to prevent in-flight separation of the wing from the airplane caused by corroded wing lift struts or cracked wing lift forks, which could result in loss of control of the airplane.
85-19-05: 85-19-05 BURKHART GROB: Amendment 39-5133. Applies to model G109 powered gliders certificated in any category. Compliance is required as indicated unless already accomplished. To prevent undesirable spinning, accomplish the following before further flight: (a) Replace the applicable pages of the flight manual with those contained in Grob- Werke GmbH Technical Information TM 817-10/2 dated May 2, 1983, and revise the wording of the spin warning placard on page 18e to read "AEROBATIC MANEUVERS INCLUDING SPINNING PROHIBITED" instead of "AEROBATIC INCLUSIVE SPINNING PROHIBITED". (b) Install spin warning placard on the left hand side of the instrument panel which reads "AEROBATIC MANEUVERS INCLUDING SPINNING PROHIBITED". Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Aircraft Certification Office, AEU-100, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, Brussels, Belgium 09667-1011, telephone 513.38.30. Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Brussels Aircraft Certification Office, may adjust the compliance time specified in this AD. This amendment becomes effective September 25, 1985.