36 Airworthiness Directives: 27 airplane, 1 rotorcraft, 8 engine.
AD 2003-09-07 · published May 1, 2003, effective Jun 5, 2003
McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 Series Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all McDonnell Douglas transport category airplanes listed above, that requires a check of the slant pressure panels of the wheel wells of the left and right main landing gear (MLG) for water leakage, and repair of any leak found. This action is necessary to prevent the accumulation of water in the wheel wells of the MLG during flight, which could freeze on the lateral control mixer and control cables, resulting in restricted lateral control and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-09-09 · published May 1, 2003, effective Jun 24, 2003
Cessna Aircraft Company Models 441 and F406 Airplanes
This amendment supersedes Airworthiness Directive (AD) 2002- 09-13, which currently requires a one-time inspection of the fuel boost pump wiring inside and outside the boost pump reservoir and repair or replacement of the wiring as necessary on certain Cessna Aircraft Company (Cessna) Model 441 airplanes. AD 2002-09-13 resulted from several reports of chafing and/or arcing of the fuel boost pump wiring inside and outside the fuel pump reservoir. This AD retains the actions required in AD 2002-09-13, makes the one-time inspection repetitive, requires the inspection and possible replacement of the wire harness, lead wires and fuel boost pump on Model F406 airplanes, and requires eventual installation of an improved design wire harness and fuel boost pump as terminating action for the repetitive inspections. The actions specified by this AD are intended to detect, correct, and prevent chafing and/or arcing fuel boost pump wiring, which could result in arcing within the wing fuel storage system. Such a condition could lead to ignition of explosive vapor within the fuel storage system.
AD 2003-09-08 · published May 2, 2003, effective Jun 6, 2003
Boeing Model 767-200, -300, and -300F Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to all Boeing Model 767 series airplanes, that currently requires an inspection to ensure that all bolts of the support beam of the hinge fitting assembly on both the left- and right- hand outboard trailing edge flaps are the correct length and type, and correction of any discrepancy found. This amendment reduces the applicability of the existing AD, adds inspections, and mandates terminating action. The actions specified by this AD are intended to prevent failure of the bolts that attach the outboard trailing edge flap to the support beam, which could result in loss of the flap and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-09-11 · published May 2, 2003, effective Jun 16, 2003
Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC- 12/45 airplanes. This AD requires you to inspect the pedestal leg assembly on aft facing passenger seats for correct configuration. If incorrectly configured, this AD requires you to modify to the correct configuration. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. The actions specified by this AD are intended to detect and correct pedestal leg assemblies on aft facing passenger seats that are in nonconformance with manufacturing standards. Nonconforming passenger seats could result in passenger injury in an emergency situation.
AD 2003-09-10 · published May 5, 2003, effective May 13, 2003
Raytheon Aircraft Company Model 390 Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) Model 390 airplanes. This AD requires you to modify the aft power distribution box and the aft ram air duct. This AD is the result of reports of two incidents involving temporary loss of all attitude display information. The actions specified by this AD are intended to prevent moisture from entering the aft power distribution box through the aft ram air duct, which could result in electrical power failure. Such failure could lead to loss of all attitude display information during flight.
AD 2003-09-12 · published May 6, 2003, effective Jun 27, 2003
Raytheon Aircraft Company Model 1900D Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) Model 1900D airplanes. This AD requires you to accomplish a one-time inspection for missing rivets on certain areas of the airplane and, if necessary, install rivets. This AD is the result of Raytheon identifying several instances of missing rivets on these airplanes. The actions specified by this AD are intended to detect and correct an understrength condition in the fuselage, which could result in the failure of the fuselage. Such failure could lead to loss of control of the airplane in flight.
AD 2003-09-13 · published May 9, 2003, effective Jun 23, 2003
the New Piper Aircraft, Inc. Models PA-23, PA-23-160, PA-23-235, PA-23-250, and PA-E23-250 Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain The New Piper Aircraft, Inc. (Piper) Models PA-23, PA-23-160, PA-23-235, PA-23-250, and PA-E23-250 airplanes that do not incorporate a certain design flap control torque tube or torque tube assembly. This AD requires you to repetitively inspect the flap control torque tube for cracks, corrosion, wear, or elongation of the attachment bolt holes (referred to as damage); and requires you to replace any damaged torque tube with either an improved design flap control torque tube or flap control torque tube assembly. The repetitive inspections will no longer be necessary when the improved design torque tube or torque tube assembly is installed. This AD is the result of several reports of damage found in the flap control torque tube on the affected airplanes. The actions specified by this AD are intended to detect and correct damage to the flap control torque tube, which could result in failure of the flap operating system. If such failure occurred during landing or takeoff, then a split flap condition could occur with potential loss of control of the airplane.
AD 94-20-04 R2 · published May 14, 2003, effective Jun 27, 2003
Raytheon Aircraft Company Beech Models C35, D35, E35, F35, G35, H35, J35, K35, M35, N35, P35, S35, V35, V35A, and V35B Airplanes
This amendment revises Airworthiness Directive (AD) 94-20-04 R1, which currently requires ruddervator inspections and modifications on certain Raytheon Aircraft Company (Raytheon) Beech Models C35, D35, E35, F35, G35, H35, J35, K35, M35, N35, P35, S35, V35, V35A, and V35B airplanes. This AD maintains the actions of AD 94-20-04 R1, but makes the repetitive visual inspection of the empennage, aft fuselage, and ruddervator control system with any subsequent repair and the setting of the elevator controls, rudder and tab system controls, cable tensions, and rigging a one time action; and adds repetitive inspections of the fuselage bulkheads that were required by AD 94-20- 04. This AD is the result of the need to add a repetitive inspection of the fuselage bulkheads and change other inspections from a repetitive to a one-time action. The actions specified by this AD are intended to prevent structural failure of the V-tail, which could result in loss of control of the airplane.
AD 2003-10-05 · published May 16, 2003, effective May 30, 2003
Raytheon Aircraft Company Model 390 Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) Model 390 airplanes. This AD requires you to incorporate information into the FAA-approved Airplane Flight Manual (AFM) that would add requirements for "Landing Performance for Operation of the Airplane with Lift Dump Inoperative." This AD is the result of two accidents on the affected airplanes where a contributing factor was the lift dump spoilers failing to deploy when commanded after the initial landing. The FAA previously issued AD 2003-07-09 affecting certain Model 390 airplanes. However, the airplane serial numbers included in this AD were inadvertently omitted from AD 2003-07-09. The actions specified by this AD are intended to require the use of necessary flight information to prevent runway overruns based on insufficient wheel braking if the lift dump spoilers do not operate after landing touchdown. This could result in reduced or loss of control of the airplane.
AD 2003-10-04 · published May 20, 2003, effective Jun 4, 2003
Dassault Model Mystere-Falcon 50 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Dassault Model Mystere-Falcon 50 series airplanes. This action requires a detailed inspection for clearance and chafing of the entire length of the hydraulic lines located within the engine pylons, and follow-on/corrective actions, as applicable. This action also requires a revision of the maintenance manual to ensure that the clamps that hold the hydraulic lines are in their initial position during normal maintenance, and that the position is identified with a yellow paint line. This action is necessary to prevent chafing and consequent leakage of the hydraulic lines located within the No. 1 and No. 3 engine pylons, which can result in failure of the No. 1 and No. 2 hydraulic systems, and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-10-14 · published May 23, 2003, effective Jun 9, 2003
Airbus Model A319-131, -132, and -133; A320-232 and -233; and A321-231 Series Airplanes; Equipped With International Aero Engines (IAE) V2500-A5 Series Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to all Airbus Model A319-131, -132, and -133; A320-232 and -233; and A321-231 series airplanes; equipped with International Aero Engines (IAE) V2500-A5 series engines. This action requires revising the airplane flight manual to incorporate new procedures to follow in the event of an oil filter clog message. This action is necessary to require the flightcrew to follow the procedures necessary to prevent smoke caused by an oil filter clog from entering the cabin during flight. This action is intended to address the identified unsafe condition.
AD 2003-10-06 · published May 27, 2003, effective Jul 1, 2003
Boeing Model 747 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747 series airplanes, that requires repetitive inspections for cracking of the skin, bear strap, and sill chord of the lower lobe cargo door cutout, and repair, if necessary. For certain airplanes, the AD also provides an optional modification of the lower lobe cargo door cutout, which ends the pre-modification repetitive inspections, but necessitates new post-modification repetitive inspections after a certain time. The actions specified by this AD are intended to find and fix cracking of the skin, bear strap, and sill chord of the lower lobe cargo door cutout, which could lead to reduced structural integrity of the lower lobe cargo door cutout, and result in rapid depressurization of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-10-08 · published May 27, 2003, effective Jul 1, 2003
McDonnell Douglas Model 717-200 Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model 717-200 airplanes, that requires modification of the longeron-to-frame installation of the upper center fuselage. This action is necessary to prevent fatigue cracking of the longerons of the upper center fuselage, which could result in reduced structural integrity of the fuselage. This action is intended to address the identified unsafe condition.
AD 2003-10-09 · published May 27, 2003, effective Jul 1, 2003
Boeing Model 747-400 and -400F Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-400 and -400F series airplanes, that requires initial and, for certain airplanes, repetitive inspections of the rivets in the forward, top, and side panels of the nose wheel well (NWW) for discrepancies; and follow-on inspections and corrective action, if necessary. This amendment also provides eventual terminating action for the repetitive inspections. The actions specified by this AD are intended to find and fix discrepancies of the rivets in the NWW panels, which could result in failure of the rivets and consequent reduced structural integrity of the panels and rapid depressurization of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-10-10 · published May 27, 2003, effective Jul 1, 2003
McDonnell Douglas Model 717-200 Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model 717-200 airplanes, that requires modification of certain attachment holes in the rear spar of the left and right wings. This action is necessary to prevent fatigue cracking of the rear spar of the wings, which could result in reduced structural integrity of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-10-11 · published May 27, 2003, effective Jul 1, 2003
Boeing Model 767-200 and -300 Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 767-200 and -300 series airplanes, that currently requires repetitive inspections to find discrepancies of the barrel nuts that attach the vertical fin to body section 48, and follow-on actions. For certain airplanes, the existing AD requires replacement of certain bolts with new bolts. The existing AD also provides for optional terminating actions for the repetitive inspections. This amendment reduces the compliance time for the inspections; changes the torque specification; and mandates eventual replacement of all H-11 steel alloy barrel nuts and bolts with Inconel nuts and bolts, which ends the repetitive inspections. The actions specified by this AD are intended to find and fix corroded, cracked, or broken barrel nuts that attach the vertical fin to body section 48, which could result in reduced structural integrity of the vertical fin attachment joint, loss of the vertical fin, and consequent loss of controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-10-12 · published May 27, 2003, effective Jul 1, 2003
Airbus Model A330 and A340 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A330 and A340 series airplanes, that requires, among other actions, modifying the down drive brackets of the left- and right-hand sides of the inboard flap track 1 assembly and installation of bigger bolts and washers, and testing the torque value of the nuts. The actions specified by this AD are intended to prevent failure of the bolts due to flexural loads caused by transmission jam loading, which could lead to a "flap-locked" condition, causing reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-10-13 · published May 27, 2003, effective Jul 1, 2003
Raytheon Model Beech 400A and 400T Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Model Beech 400A and 400T series airplanes, that requires replacement of the low-pressure oxygen tubing located in the forward fuselage (nose avionics bay), lower forward flight deck, and lower forward cabin areas, as applicable, with new low-pressure oxygen tubing. This action is necessary to prevent leakage of oxygen from scored low-pressure oxygen tubing, which could result in lack of available oxygen for the flightcrew, or possible explosion or fire. This action is intended to address the identified unsafe condition.
AD 2003-10-07 · published May 29, 2003, effective Jul 3, 2003
Gulfstream Aerospace LP Model Astra SPX and 1125 Westwind Astra Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Gulfstream Aerospace LP Model Astra SPX and 1125 Westwind Astra series airplanes, that requires removing the existing oxygen shutoff valve and installing a new oxygen shutoff valve. The actions specified by this AD are intended to prevent rapid adiabatic compression within the oxygen line between the oxygen shutoff valve and the pressure regulator due to a shutoff valve that can be opened quickly, which could result in overheating of the oxygen system and consequent fire in the cockpit. This action is intended to address the identified unsafe condition.
AD 2003-11-01 · published May 29, 2003, effective Jul 3, 2003
Boeing Model 747 Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to all Boeing Model 747 series airplanes, that currently requires periodic inspections and cleaning of the drainage system cavity of the canted pressure deck, aft of the wing center section. This amendment adds new repetitive tests and inspections for discrepancies of the drainage system of the canted pressure deck; and corrective actions, if necessary. This amendment also terminates the requirements of the existing AD. The actions specified by this AD are intended to prevent ice accumulation on the lateral flight control cables and/or components due to water entering the wheel well of the landing gear and freezing, which could restrict or jam control cable movement, resulting in loss of controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-11-02 · published May 29, 2003, effective Jul 3, 2003
McDonnell Douglas Model MD-90-30 Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all McDonnell Douglas Model MD-90-30 airplanes, that requires replacement of the starter relay of the auxiliary power unit (APU) with a new, improved relay. The actions specified by this AD are intended to prevent failure of the APU starter relay, which could result in depleted main airplane batteries, overheated APU starters, and damage to the wiring adjacent to the APU starter. This action is intended to address the identified unsafe condition.
AD 2003-11-03 · published May 29, 2003, effective Jul 3, 2003
Boeing Model 727, 737-100, 737-200, and 737-200C Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 727, 737-100, 737-200, and 737-200C series airplanes, that requires one-time inspections to determine the part numbers of hydraulic accumulators installed in various areas of the airplane, and follow-on corrective actions if necessary. The actions specified by this AD are intended to prevent high-velocity separation of a barrel, piston, or end cap from a hydraulic accumulator. Such separation could result in injury to personnel in the accumulator area; loss of cabin pressurization; loss of affected hydraulic systems; or damage to plumbing, electrical installations, or structural members. This action is intended to address the identified unsafe condition.
AD 2003-11-04 · published May 29, 2003, effective Jul 3, 2003
McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F, DC-10-30F (KC-10A and KDC-10), DC-10-40, and DC-10-40F Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas airplanes, that requires inspections of the linear variable differential transducers (LVDTs) of the autopilot for discrepancies, and follow-on actions if necessary. This amendment is prompted by information from the manufacturer advising that certain LVDTs were delivered with an undersize nylok element on the threaded extension. The actions specified by this AD are intended to prevent failure of the LVDTs, which could result in an automatic pitch trim malfunction or an autopilot disconnect, and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2003-11-05 · published May 29, 2003, effective Jul 3, 2003
Dassault Model Mystere-Falcon 900 and Falcon 900EX Series Airplanes
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 certain self- adhering soundproofing mats under the passenger consoles in the cabin, which are not sufficiently fire-retardant, with mats that are not self- adhering and are sufficiently fire-retardant. This action is necessary to prevent an uncontrolled fire in the cabin due to self-adhering soundproofing mats under the passenger consoles in the cabin, which are not sufficiently fire-retardant. This action is intended to address the identified unsafe condition.
AD 2003-11-06 · published May 29, 2003, effective Jul 3, 2003
BAE Systems (Operations) Limited Model ATP Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all BAE Systems (Operations) Limited Model ATP airplanes, that requires a one-time inspection of the fuel pipes within the fuel "float switch" test pipelines in the left and right inner wings for evidence of damage, cracks, misalignment, or fuel leakage; follow-on corrective actions, if necessary; and repetitive replacement of the fuel pipes at regular intervals. This action is necessary to prevent fuel vapors from collecting in the dry bay of the wing torsion box and consequent risk of an explosion due to fuel leakage. This action is intended to address the identified unsafe condition.
AD 2003-11-07 · published May 29, 2003, effective Jul 3, 2003
Israel Aircraft Industries, Ltd. Model 1121, 1121A, 1121B, 1123, 1124, and 1124A Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all Israel Aircraft Industries, Ltd. Model 1121, 1121A, 1121B, 1123, 1124, and 1124A series airplanes, that requires removing the existing oxygen shutoff valve and installing a new oxygen shutoff valve. This action is necessary to prevent rapid adiabatic compression within the oxygen line between the oxygen shutoff valve and the pressure regulator due to a shutoff valve that can be opened quickly, which could result in overheating of the oxygen system, and consequent fire in the cockpit. This action is intended to address the identified unsafe condition.
AD 2003-11-11 · published May 29, 2003, effective Jun 13, 2003
Bombardier Model CL-600-2B19 Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Bombardier Model CL-600-2B19 series airplanes, that currently requires repetitive eddy current inspections for cracking of the main landing gear (MLG) main fittings, and replacement with new or serviceable MLG main fittings if necessary. That AD also requires servicing the MLG shock struts; inspecting the MLG shock struts for nitrogen pressure, visible chrome dimension, and oil leakage; and performing corrective actions, if necessary. This amendment clarifies the applicability, adds certain repetitive inspections, reduces an initial inspection threshold, and removes a provision to extend the repetitive interval for the eddy current inspection. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent failure of the MLG main fittings, which could result in collapse of the MLG upon landing.
AD 2003-09-05 · published May 1, 2003, effective May 16, 2003
Schweizer Aircraft Corporation Model 269D Helicopters
This amendment adopts a new airworthiness directive (AD) for Schweizer Aircraft Corporation (Schweizer) Model 269D helicopters. This action requires inspecting each aluminum horizontal stabilizer endplate (endplate) and the attach angles for cracks, fretting, and endplate bending. If fretting is found, as indicated by a powder residue adjacent to a rivet head, installing an inspection hole in the horizontal stabilizer and inspecting the internal structure is required. Replacing unairworthy parts is required before further flight. Finally, reporting any cracked or bent endplate, any cracked attach angles, or fretting to the FAA is required. This amendment is prompted by reports of loose endplates, and one report of an endplate separating from the helicopter during flight. The actions specified in this AD are intended to prevent loss of an endplate during flight, which could strike the tail rotor and result in loss of control of the helicopter.
AD 2003-09-14 · published May 8, 2003, effective Jun 12, 2003
General Electric CF34-8C1 Turbofan Engines
This amendment adopts a new airworthiness directive (AD), that is applicable to General Electric (GE) CF34-8C1 turbofan engines. This amendment requires replacing combustion chamber assemblies, part number (P/N) 4126T87G04, before accumulating a new reduced cyclic life limit. This amendment is prompted by stress and life analysis conducted by GE. The actions specified by this AD are intended to prevent rupture of the combustion chamber assembly and possible engine fire.
AD 2003-10-01 · published May 13, 2003, effective Jun 17, 2003
General Electric Company CF6-6 Series Turbofan Engines
This amendment adopts a new airworthiness directive (AD), that is applicable to General Electric (GE) CF6-6 series turbofan engines. This amendment requires a reduction of the cyclic life limit for certain high pressure turbine rotor (HPTR) rear shafts, and requires removing certain HPTR rear shafts from service before exceeding the new, lower cyclic life limit. In addition, this amendment requires removing from service certain HPTR rear shafts that currently exceed, or will exceed, the new, lower cyclic life limit according to the compliance schedule described in this AD. This amendment is prompted by an updated low-cycle-fatigue (LCF) analysis performed by the manufacturer that resulted in a lower cyclic life limit for certain HPTR rear shaft part numbers (PNs) installed in CF6-6 engines. The actions specified by this AD are intended to prevent cracks in HPTR rear shafts that could result in uncontained engine failure and damage to the airplane.
AD 2003-10-02 · published May 15, 2003, effective Jun 19, 2003
Rolls-Royce plc RB211 Series Turbofan Engines
The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce plc (RR) RB211-524C2-19 and RB211-524C2-B-19 series turbofan engines. This AD requires replacing the existing low pressure (LP) compressor location bearing assembly, intermediate pressure (IP) compressor location bearing, IP compressor bearing support housing, IP compressor rear stub shaft, LP compressor location bearing support, oil transfer connector assembly, hydraulic oil seal housing, and hydraulic oil seal with improved design parts. This AD is prompted by statistical analysis by the manufacturer of in-service premature bearing failures. The actions specified in this AD are intended to prevent LP compressor failure and uncontained disc failures, resulting in damage to the airplane.
AD 2003-08-52 · published May 16, 2003, effective Jun 2, 2003
GE Aircraft Engines CT7-9B Turboprop Engines
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2003-08-52 that was sent previously to all known U.S. owners and operators of GE Aircraft Engines (GEAE) CT7-9B turboprop engines. This AD requires rigging the compressor variable geometry (VG) to VG schedule N. This AD is prompted by reports of 12 compressor stall events that occurred over a six-month period. The actions specified in this AD are intended to prevent a dual-engine in-flight shutdown or power loss due to a compressor stall during deceleration from takeoff power to climb power.
AD 2003-10-03 · published May 16, 2003, effective Jun 20, 2003
Rolls-Royce plc Model RB211 Turbofan Engines
This amendment adopts a new airworthiness directive (AD), that is applicable to Rolls-Royce plc (RR) model RB211-535E4-37, RB211- 535E4-B-37, and RB211-535E4-B-75 turbofan engines. This amendment requires removal from service of certain high pressure (HP) turbine discs before they reach newly established life limits. This amendment is prompted by the manufacturer's inspections and analysis of HP turbine discs that have accumulated high cycles. The actions specified by this AD are intended to prevent machining-induced cracking of the HP turbine disc which could cause an uncontained HP turbine disc failure and damage to the airplane.
AD 2003-11-08 · published May 29, 2003, effective Jul 3, 2003
Turbomeca S.A. Arriel -1B, -1D, and -1D1 Series Turboshaft Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to Turbomeca S.A. Arriel -1B, -1D, and -1D1 series turboshaft engines. This amendment requires replacement of modules M03 modified to TU 204 standard with modules M03 not modified to TU 204 standard. This amendment is prompted by several reports of 2nd stage gas generator turbine blade failures. The actions specified by this AD are intended to prevent 2nd stage gas generator turbine blade failure resulting in uncommanded engine in-flight shutdown.
AD 2003-11-09 · published May 29, 2003, effective Jul 3, 2003
Turbomeca Turmo IV A and IV C Series Turboshaft Engines
This amendment adopts a new airworthiness directive (AD), that is applicable to Turbomeca Turmo IV A and IV C series turboshaft engines. This amendment requires initial and repetitive borescope and eddy current or ultrasonic inspections of centrifugal compressor intake wheel blades for cracks and evidence of corrosion pitting, and, if found cracked or if there is evidence of corrosion pitting, replacement with serviceable parts. This amendment is prompted by reports of cracked centrifugal compressor intake wheel blades, resulting in the release of one or more blade fragments. The actions specified by this AD are intended to prevent centrifugal compressor intake wheel blade cracks, which can result in in-flight engine power loss or shutdown.
AD 2003-11-10 · published May 29, 2003, effective Jul 3, 2003
Turbomeca S.A. Arrius -2F Turboshaft Engines
This amendment adopts a new airworthiness directive (AD), that is applicable to Turbomeca S.A. Arrius -2F turboshaft engines with certain serial number (SN) Fuel Control Units (FCUs). This amendment requires adjusting the FCU maximum fuel flow mechanical stop position to a higher fuel flow setting. This amendment is prompted by an FCU discovered to have a maximum fuel flow limit adjusted below the maximum required setting. The actions specified by this AD are intended to prevent reduced maximum available power during takeoff, landing, or an emergency, which could significantly affect helicopter performance and result in loss of the helicopter.
