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93-05-15: 93-05-15 CESSNA AIRCRAFT COMPANY: Amendment 39-8519. Docket 92-NM-155-AD. Applicability: Citation Model 500/501 series airplanes, unit numbers -0001 through -0689, inclusive, equipped with thrust reversers; Citation Model 550/551 series airplanes, unit numbers -0002 through -0678, inclusive, equipped with thrust reversers; Citation Model S550 series airplanes, unit numbers -0001 through -0160, inclusive; Citation Model 560 series airplanes, unit numbers -071A, -092A, -109A, and -0001 through -0118, inclusive; Citation Model 650 series airplanes, serial numbers -0001 through -0217, inclusive; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent severely reduced controllability of engine power authority, accomplish the following: (a) Within 150 hours time-in-service after the effective date of this AD, modify the thrust reverser throttle load limiter in accordance with Cessna Citation Service Bulletin SB500-78-11, dated September 13, 1991 (for Model 500/501 series airplanes); Cessna Citation Service Bulletin SB550-78-03, dated September 13, 1991 (for Model 550/551 series airplanes); Cessna Citation Service Bulletin SBS550-78-04, dated September 13, 1991 (for Model S550 series airplanes); Cessna Citation Service Bulletin SB560-78-02, dated September 13, 1991 (for Model 560 series airplanes); or Cessna Citation Service Bulletin SB650-78-05, Revision 1, dated June 12, 1992 (for Model 650 series airplanes); as applicable. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Wichita Aircraft Certification Office (ACO), FAA, Small Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Wichita ACO. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Wichita ACO. (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 modification shall be done in accordance with the following Cessna Citation Service Bulletins, as applicable, which contain the specified effective pages: Service Bulletin Referenced and Date Page Number Revision Level Shown on Page Shown on Page 500-78-11, September 13, 1991 1-7 Original September 13, 1991 SBS550-78-04, September 13, 1991 1-7 Original September 13, 1991 SB550-78-03, September 13, 1991 1-7 Original September 13, 1991 SB560-78-02, September 13, 1991 1-7 Original September 13, 1991 SB650-78-05, Revision 1, June 12, 1992 1-3 4-6 1 Original June 12, 1992 February 14, 1992 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 Cessna Aircraft Company, Citation Marketing Division, P.O. Box 7706, Wichita, Kansas 67277. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (e) This amendment becomes effective on April 23, 1993.
2013-24-14: We are adopting a new airworthiness directive (AD) for Diamond Aircraft Industries GmbH Models DA40 and DA40F airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued 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 fatigue strength found in the aft main spar does not ensure unlimited lifetime structural integrity. We are issuing this AD to require actions to address the unsafe condition on these products.
2010-15-04: We are adopting a new airworthiness directive (AD) for the specified ECF Model EC225LP helicopters. This AD results from a mandatory continuing airworthiness information (MCAI) AD issued by the aviation authority of the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community. The MCAI AD states there have been a "few'' reports of cracks and failure of the main rotor hub (MRH) cone restrainer support lugs at their attachment points on the reinforcement ring where the dome fairing is secured. Also, cracks on the dome fairing support have been reported. Failure of the cone restrainer support or the dome fairing support attachment lugs may lead to loss of the dome fairing, damage to the rotor blades, and subsequent loss of control of the helicopter.
99-16-02: This amendment supersedes an existing airworthiness directive (AD), applicable to certain British Aerospace Model BAC 1-11 200 and 400 series airplanes, that currently limits the number of operations at increased cabin pressure differential, and requires repetitive structural inspections for cracking of the fuselage, and repair or replacement of parts, if necessary. This amendment requires additional repetitive inspections for cracking of the fuselage. This amendment is prompted by the determination that airplanes operating at increased cabin pressure differential are more likely to develop fatigue cracking earlier in their service lives than those airplanes operating at normal cabin differential pressures. The actions specified by this AD are intended to detect and correct fatigue cracking of the airplane fuselage, which could result in reduced structural integrity of the airplane.
2013-22-19: We are adopting a new airworthiness directive (AD) for all Gulfstream Aerospace Corporation Model GV and GV-SP airplanes. This AD was prompted by reports of two independent types of failure of the fuel boost pump with overheat damage found on the internal components and external housing on one of the failure types, and fuel leakage on the other. This AD requires inspecting to determine if fuel boost pumps having a certain part number are installed, replacing the fuel boost pumps having a certain part number, and revising the airplane maintenance program to include revised instructions for continued airworthiness. We are issuing this AD to prevent fuel leakage in combination with a capacitor clearance issue, which could result in an uncontrolled fire in the wheel well.
72-20-02: 72-20-02 CONTINENTAL: Amendment 39-1522 as amended by Amendment 39-1613 as amended by Amendment 39-1774 is further amended by Amendment 39-1974. Applies to Models IO-470-D, IO-470-E, IO- 470-F, IO-470-H, IO-470-L, IO-470-M, IO-470-N, IO-470-S, IO-470-U, IO-470-V, and TSIO-470-B, TSIO-470- C, TSIO-470-D engines which have installed "Non-H" cylinder assemblies, Part Number 626820, and "H" cylinder assemblies manufactured or remanufactured prior to April 1963. NOTE 1: "H" type cylinders are those having the letter H impression stamped on the top edge of the rocker box flange over the exhaust valve. "Non-H" type cylinders do not have this identification. Compliance: Required as indicated unless already accomplished. To preclude additional inflight failures of Part Number 626820 "Non-H" type cylinder assemblies and "H" type cylinder assemblies manufactured or remanufactured prior to April 1963, accomplish the following or an equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, Southern Region, Atlanta, Georgia: A. Within the next 20 hours' time in service after the effective date of this airworthiness directive and thereafter at intervals not exceeding 20 hours' time in service from the last inspection: (1) Visually inspect the circumference of these cylinder assemblies at the junction of the aluminum head and steel barrel for oil leaks and/or combustion product stains. Engine permanent maintenance record entry must be made to reflect airworthiness directive compliance. NOTE 2: In order to perform the inspection required by Paragraph A(1) of this airworthiness directive, it may be necessary to remove engine cowling or access doors to permit visual examination with mirrors or other visual aids of the prescribed area of the cylinder. If the engine is clean and free of oil in the area to be inspected, the inspection required by Paragraph A(1) may be performed without further cleaning of the engine. If oil leakage froman unknown source has caused a generally oily condition, the engine should be washed down and run up to normal operating conditions prior to the inspection required by Paragraph A(1). During the inspection it may also be helpful to rotate the propeller to detect significant differences in compression between cylinders or audible compression leakage through a crack in the cylinder barrel. (2) The inspection(s) required by Paragraph A(1) must be performed by those persons authorized to perform inspections under Federal Aviation Regulation 43.3 except that on aircraft not utilized in air carrier services the inspection(s) may be performed by the holder of a pilot's certificate issued under Part 61 of the Federal Aviation Regulations on any aircraft owned or operated by him. (3) If oil leaks and /or combustion product stains are found at the junction of the cylinder head and barrel during any inspection required by Paragraph A(1), before further flight, a certificated powerplantmechanic shall investigate and establish the source of these conditions. If a cylinder barrel crack is found, the cracked cylinder must be replaced with an airworthy part. B. At next engine overhaul replace Part Number 626820 "Non-H" cylinder assemblies and "H" cylinder assemblies manufactured or remanufactured prior to April 1963 (as identified by the date of manufacture impression stamped in the machined area beneath the valve rocker shaft supports) with Part Number 626820 cylinder assemblies manufactured or remanufactured after April 1963 and having the letter "H" impression stamped on the top edge of the rocker box flange over the exhaust valve. NOTE 3: On engines manufactured or remanufactured by Teledyne Continental Motors during 1964 or later, as indicated by the year suffix on the serial number, it may be assumed without further verification that "H" type cylinders installed were manufactured subsequent to April 1963 if maintenance records do not indicate a cylinder exchange. On other engines having "H" type cylinders installed, it will be necessary to establish the cylinder's date of manufacture by removing the rocker box cover and inspecting the area beneath the rocker arm for the impression stamped manufacture date. Information on the location of this stamp was given on Page 115 of the August 1971 General Aviation Inspection Aids Summary. However, in the event the manufacture date appears ambiguous or illegible Teledyne Continental Service Bulletin M73-2 should be used to identify cylinders. NOTE 4: The term "Overhaul" as used in this AD is taken to include both major and top overhaul. When considering top overhauls, the AD applies equally to individual cylinder top overhauls as well as a complete engine assembly. C. Inspections as outlined in Paragraph A(1) are no longer required when Paragraph B has been accomplished. This airworthiness directive Amendment 39-1522 supersedes Amendment 39-509, AD 67-31-5. Amendment 39-1522 became effective September 25, 1972. Amendment 39-1613 became effective April 2, 1973. Amendment 39-1774 became effective February 1, 1974. This Amendment 39-1974 becomes effective October 2, 1974.
99-16-03: This amendment adopts a new airworthiness directive (AD), applicable to certain Learjet Model 23, 24, 25, 28, 29, 31, 55, and 60 series airplanes, that requires a one-time detailed visual inspection of the electrical wire leads of the horizontal stabilizer anti-ice system to verify that the numbers on the wire leads correctly correspond to the numbers on the connected airframe wiring; installation of a wire ID strap on the left- and right-hand sides of each terminal block; and installation of a warning placard. This amendment is prompted by a report of severe flight control buffeting of a Learjet Model 55 series airplane due to a malfunction of the horizontal stabilizer anti-ice system. The actions specified by this AD are intended to prevent undetected accretion of ice on the leading edge of the horizontal stabilizer, which could result in the loss of pitch control and consequent reduced controllability of the airplane.
83-07-15: 83-07-15 BRITISH AEROSPACE, AIRCRAFT GROUP, SCOTTISH DIVISION: Amendment 39-4617. Applies to Model HP.137 Jetstream MK.1 and Jetstream Series 200 airplanes certificated in any category. Compliance: Required as indicated, unless already accomplished. To prevent cracking of the front pressure bulkhead boundary angle and possible catastrophic depressurization, accomplish the following: a) For all affected airplanes with 12,900 or more flights, unless British Aerospace Modification No. 5115 is installed, within the next 100 flights after the effective date of this AD, apply a red line to the cabin differential pressure gauge to indicate that the maximum allowable differential pressure is 2.5 PSI. Extend the red line to the case of the instrument to avoid confusion if the glass cover is rotated. b) For all other affected airplanes with less than 12,900 flights, unless British Aerospace Modification No. 5115 is installed, within the next 100 flights after the effective date of this AD or upon the accumulation of 2,000 flights, whichever occurs later, apply a red line to the cabin differential pressure gauge to indicate that the maximum allowable differential pressure is 4.0 PSI except that in no case shall airplanes in this group be allowed to accumulate more than 13,000 flights without having the cabin differential pressure gauge remarked with a red line at 2.5 PSI in accordance with paragraph a) of this AD. Extend the red line to the case of the instrument to avoid confusion if the glass cover is rotated. c) For all aircraft modified per paragraphs a) and b) of this AD, fabricate a placard to read as follows and install it adjacent to the pressure differential gauge: 1) For aircraft affected by paragraph a) of this AD: "2.5PSI max. press. difference." 2) For aircraft affected by paragraph b) of this AD: "4.0PSI max. press. difference." d) Within the next 500 flights after the effective date of this AD on all affected airplanes, unless British Aerospace Modification No. 5115 is installed, modify the pressurization systems in accordance with British Aerospace, Aircraft Group Modification No. 5151, Issue 1, dated August 1981 or Modification No. 5152, Issue 1, dated August 1981, as appropriate to limit maximum pressurization to 4.0 PSI or 2.5 PSI respectively. e) For purposes of complying with this AD, subject to the acceptance by the assigned FAA maintenance inspector, the number of flights may be determined by multiplying each airplane's hours time-in-service by two. f) The modifications specified by paragraphs a), b) and (c), or d) of this AD are no longer applicable when British Aerospace Modification No. 5115 is installed. g) Aircraft may be flown in accordance with FAR 21.197 to a location where this AD can be accomplished. h) An equivalent method of compliance with this AD if used must be approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa and Middle East Office, FAA, c/o American Embassy, 1000 Brussels, Belgium. This amendment becomes effective on April 14, 1983.
92-06-11: 92-06-11 BEECH: Amendment 39-8191; Docket 91-CE-78-AD. Applicability: The following Beech model airplanes that are equipped with Collins DPU-85N Display Processor Units (DPU) and Collins MPU-85N Multifunction Processor Units (MPU), certificated in any category: Model Serial Numbers B200 BB-1349 through BB-1409 300 FA-205 through FA-217 B300 FL-1 through FL-60 B300C FM-1 through FM-3 1900C UC-73, UC-139 and UC-147 Compliance: Required as indicated, unless already accomplished. To prevent incorrect pilot decisions based on undetected erroneous attitude information displayed by the Collins EFIS-85/86B (14) system or undesired autopilot movement of the airplane, accomplish the following: (a) Within the next 50 hours time-in-service (TIS) after the effective date of this AD, modify the airplane autopilot/flight director system wiring in accordance with the instructions in Beech Service Bulletin (SB) No. 2423, dated December 1991. (b) Within the next 6 calendar months after the effective date of this AD, modify the hardware of the Collins EFIS-85/86B (14) system, Collins DPU-85N Display Processor Unit, and Collins MPU-85N Multifunction Processor Unit in accordance with the instructions in Collins SB DPU-85N-34-51 and SB MPU-85N-34-51, both dated June 6, 1991. (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) An alternative method of compliance or adjustment of the initial or repetitive compliance times that provides an equivalent level of safety may be approved by the Manager, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Wichita Aircraft Certification Office. (e) The modifications required by this AD shall be done in accordance with Beech Service Bulletin No. 2423, dated December 1991, and Collins Service Bulletin DPU-85N-34-51 and Collins Service Bulletin MPU-85N-34-51, both dated June 6, 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 the Beech Aircraft Corporation, P.O. Box 85, Wichita, Kansas 67201-0085; or Rockwell International, Collins General Aviation Division, 400 Collins Road, NE; Cedar Rapids, Iowa 52498. Copies may be inspected at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 1100 L Street, NW; Room 8401, Washington, DC. (f) This amendment (39-8191) becomes effective on March 30, 1992.
99-15-09: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 737-600 series airplanes. This action requires revising the Airplane Flight Manual (AFM) to prohibit operation of the airplane under certain conditions; repetitive inspections of the tab mast fittings of the elevator tab assemblies to detect cracking; an elevator tab freeplay check; and corrective actions, if necessary. This AD also requires installing an additional fastener on the elevator tab mast fitting, which terminates the AFM revision and extends certain repetitive inspections. This AD also requires replacement of the elevator tab mast fitting with a new, improved fitting, which constitutes terminating action for the requirements of this AD. This amendment is prompted by a report of a severe vibration incident on a Boeing Model 737-800 series airplane; inspection revealed fracturing of the elevator tab mast fitting and excessive freeplay in the elevator tab. The actionsspecified in this AD are intended to prevent loss of controllability of the airplane due to excessive freeplay in the elevator tab or a free tab.