AviZone

Production planning system  organisation shall have a system appropriate to the amount and complexity of  work to plan the availability of all necessary personnel, tools, equipment, material, m data and facilities in order to ensure the safe completion of the maintenance work. The planning of maintenance tasks, and the organizing of shifts , shall take into  account human performance limitations . When it is required to hand over the continuation or completion of maintenance  tasks f or  reasons of a shift or personnel changeover , relevant information shall be adequately communicated between outgoing and incoming personnel. Organisational set-up   Depending on the amount and complexity of work generally performed by the  AMO, the planning system may range from a very simple procedure to a complex organisational set-up including a dedicated planning function in support of the production function. complementary elements: - scheduling the main...

Heavy Rain Can Cause Frozen Brakes           It is reminded that carbon disc brakes can retain moisture from exposure to heavy rain or washing; leading to the possibility of frozen brakes upon landing.             Climate conditions well above freezing at departure are irrelevant if moisture levels in the brakes are sufficient to freeze during cold soak at altitude.       A Bombardier airplane experienced damage during a landing from a blown MLG tire. The airplane was exposed to a significant amount of rainfall apprx. 12 hours before the airplane departed from a dry runway. As the airplane climbed to high altitude in sub-freezing conditions, moisture in one of the brakes froze causing the wheel to lock on landing.          FAA reminds maintenance personnel to protect wheels and brakes from direct washing spray and inform flight crews if aircraft or landing gears were washed recently...

Whelen® Engineering Company makes the LED position/anti-collision/tail light assemblies at each wing tip. These are comprised of light emitting diode arrays: three emitters are used for the position light, and three are used for the tail light. The anti-collision light is designed with 26 LED’s, and flash at a rate of approximately 45 cycles per minute. The intensity of the light and the flash rate of the anti-collision array prevent inspection for failed elements, so Built-In-Test (BIT) circuitry is employed to assure proper operation. This BIT circuitry measures the power used during the on cycle, and will automatically shut off the strobe function after 9 or 10 flashes if a failure is detected. This same functionality will turn off the strobes if the system is operated with low voltage, less than 11.3 volts, on the buss. Most operators will not notice this issue once the engine is started since the alternator will be supporting the buss voltage and charging the battery. It is pos...

Trim Tab Overhaul Requirement - Not Specifically Defined in Every Cessna Maintenance Manual The intent of the requirement is to assure that a serviceable and well maintained actuator is installed on the airplane. Cessna configured early maintenance manuals in a General Aviation Manufactures Association (GAMA) format, and later adopted the Airline Transport Association (ATA) format. Section 2: Ground Handling, Servicing, Lubrication and Inspection - is where the inspection/overhaul requirement will be located in the GAMA manuals. In ATA manuals, it is in Chapter 5, Time Limits/Maintenance Checks. The overhaul requirement of 1,000 hours or three years, whichever comes first, is the most common across the model line, although some early manuals contain an inspection and lubrication requirement at a 100 hour or annual interval and no overhaul requirement. The overhaul of a trim tab actuator is not specifically defined in every Cessna maintenance manual. Cessna considers this requiremen...

                   Introduction: ICAO requires ‘States to, as part of their safety programme, have the service providers/ organizations engaged in commercial operations, maintenance of aircraft, aerodrome operations, provision of air traffic services, design organizations, training to implement a safety management system which is acceptable to the State’.                     In compliance with the standards of ICAO Annexes, various CARs specify the requirements for the establishment of SMS by an organisation. SMS CAR- CAR Section 1 General Series C Part I specifies the minimum acceptable requirements for the establishment of SMS in an organization.             Benefits :  To improve on existing levels of aviation safety in the light of the continuing growth of the industry, additional measures are needed. One such measure is to encourage individual...

Hydraulic fluid injection injuries     — planning and prevention                Description: Hydraulic fluid injection injuries can result in tissue damage, amputation, and death. Advance planning for prevention and treatment is critical. Should an injury occur, there is no time for prep — it has already passed.                Fluids in high-pressure applications can escape from pinhole leaks in hoses caused by a number of factors including: age, incompatible fluids, hose twist, and minimum bend radius violations. These pressurized fluids travel at bullet speed and can penetrate deep under the skin. Yet, the injured person may feel only a slight pricking sensation. Rarely does the initial pain indicate injury severity. What looks like a simple puncture wound is life threatening? Hydraulic fluids contain a wide range of chemical compounds that are highly toxic within the bloodstream.   ...

       To be carried out before preflight.                With the airplane in the normal ground attitude and starting at the highest drain location, check all drain locations for contaminants before every flight, whether or not refueling has occurred. Have fuel sample disposal provisions, proper lighting, and a small ladder at your disposal to properly check for fuel tank system contamination. • Drain at least one cup of fuel (using a clear sampler cup) from each drain location. • Drain the fuel strainer as required to completely flush its contents in each of the fuel selector positions. • Check for water, clarity, cloudiness, haze, proper fuel type/grade (i.e.; 100LL is light blue in tint, jet fuel is clear or yellowish), odor, or other contaminants. • If any contamination is detected in the fuel tank system, thoroughly drain all drain locations again. • If contamination is observed, take further samples until the fue...

1. Basis and Purpose Task Card is required for maintenance and is prepared on the basis of CAR145 & CAR M. 2. Reference 2.1 CAR145.A. 45 Maintenance data (e) The organisation shall provide a common work card or worksheet system to be used throughout relevant parts of the organisation. In addition, the organisation shall either transcribe accurately the maintenance data contained in paragraphs (b) and (d) onto such work cards or worksheets or make precise reference to the particular maintenance task or tasks contained in such maintenance data. Work cards and worksheets may be computer generated and held on an electronic database subject to both adequate safeguards against un-authorised alteration and a back-up electronic database which shall be updated within 24 hours of any entry made to the main electronic database. Complex maintenance tasks shall be transcribed onto the work cards or worksheets and subdivided into clear stages to ensure a record of the accomplishment of the...

Pre-flight inspection requirement - away from base CAR 145.A.30(J)4. In the case of aircraft operating away from a supported location the organisation may issue a limited certification authorisation to the commander and/or the flight engineer on the basis of the flight crew licence held subject to being satisfied that sufficient practical training has been carried out to ensure that the commander or flight engineer can accomplish the specified task to the required standard. The provisions of this paragraph shall be detailed in an exposition procedure. GM 145.A.30(j)(4) Personnel requirements (Flight crew) 1. The person shall be a holder of an ATPL or a CPL, issued in accordance with Schedule II of the Aircraft Rules, 1937. 2. The person shall be a holder of a Flight Engineers Licence, issued in accordance with Schedule II of the Aircraft Rules, 1937. The theoretical knowledge instruction consists of 100 hours and includes the following elements: 1. Airframe and systems 2. El...

CAR M AMC M.A.301 -1- Continuing airworthiness tasks 1. With regard to the pre-flight inspection it is intended to mean all of the actions necessary to ensure that the aircraft is fit to make the intended flight. These should typically include but are not necessarily limited to: a) a walk-around type inspection of the aircraft and its emergency equipment for condition including, in particular, any obvious signs of wear, damage or leakage. In addition, the presence of all required equipment including emergency equipment should be established. b) an inspection of the aircraft continuing airworthiness record system or the operators technical log as applicable to ensure that the intended flight is not adversely affected by any outstanding deferred defects and that no required maintenance action shown in the maintenance statement is overdue or will become due during the flight. c) a control that consumable fluids, gases etc. uplifted prior to flight are of the correct specification...

Planning System organisation shall have a system appropriate to the amount and complexity of  work to plan the availability of all necessary personnel, tools, equipment, material, m data and facilities in order to ensure the safe completion of the maintenance work. Planning of maintenance tasks , and the organising of shifts, shall take into account human performance limitations. Hand over - When it is required to hand over the continuation or completion of maintenance tasks  for reasons of a shift or personnel changeover, relevant information shall be adequately communicated between outgoing and incoming personnel. The absence of effective planning can contribute towards increased work pressure. Work pressure itself may lead to deviation from procedures. Deviation from procedures is well known as a contributing factor in many aircraft incidents. The AMO should give due importance and clarify the objective of good planning. Advisory and explanatory material should i...

NOSE LANDING GEAR SHIMMY DAMPER – SERVICING PROCEDURE A. Service the shimmy damper every 100 hours. B. Service the shimmy damper as follows: (1) Remove the shimmy damper from the airplane. (2) While you hold the damper in a vertical position with the fitting end pointed down, pull the fitting end of the damper shaft to its limit of travel. (3) While you hold the damper in this position, fill the damper through the open end of the cylinder with hydraulic fluid. (4) Push the shaft up slowly to seal off the filler hole. (5) Clean the damper with solvent. Make sure that the shaft comes out through the filler hole until the damper is installed on the aircraft. (6) Install the damper on the airplane. C. Keep the shimmy damper clean. (1) Clean the shimmy damper with a clean, lint-free cloth to prevent the collection of dust and grit. (2) Make sure that the part of the damper piston shaft that you can see is always clean. (3) Clean the machined surfaces of the shimmy damper. (a) ...

           Remote Switch : The Artex standard remote switch is designed so that if its wires are cut or shorted together the emergency operation of the ELT is unhampered although the ELT may activate and not “reset” if the wires are shorted together.              Select a switch mounting location that is easily seen and reached by the pilot and out of direct sunlight. The Artex remote switch requires approximately 1.3” X 2.0” (33 X 50.8 mm) of panel area to mount. A space is also required for a warning placard, measuring 2.25” X 0.25” (57 X 6.5 mm), which should be placed close to the installed switch. Approximately 3 inches (75mm) of clearance behind the panel is required for the switch assembly, mating connector and harness. Mark and remove the rectangular cutout for the remote switch assembly. Dimensions are shown in the Specifications. Fit the switch assembly into the cutout and mark the four mounting screw h...

The ELT antenna must be mounted in accordance with the requirements. Locate the antenna at least 30 inches (75 cm) away from other antennas, wires, vertical stabilizer, etc. to minimize distortion of the radiated field and interference with other equipment. The antenna must be installed VERTICALLY (within ±15º of the vertical plane is acceptable). Artex has no performance data for installations that deviate from the stated requirements. The ME406 is certified to be used with the following antennas (automatic fixed “AF” configuration): • Artex Whip Antenna, 121.5/406 MHz, P/N 110-773 • Artex Rod Antenna, 121.5/406 MHz, P/N 110-338 The antenna requires a ground plane. On aircraft constructed with non-conductive materials, such as composite materials or fiberglass, a ground plane must be added. Ideally, the ground plane should extend out from the antenna mounting point at least 24 inches (60cm) in every direction. Many times this is not possible, but an effective plane can be constr...

AIRPLANE OVERALL Length (Overall) 27’ - 2”                                         Height (Maximum) 8’ - 11”                                         Wing Span (Overall) 36’ - 0”                                         Tail Span 11’ - 4”                                         Landing Gear Track Width 8’ - 4 1/2” FUSELAGE DIMENSIONS                                        Cabin Width (Maximum Sidewall to Sidewall) 3’ - 3 1/2”                   ...

HEATING SYSTEM: The heating system is comprised of the heat exchange section of the exhaust muffler, a shut-off valve mounted on the right forward side of the firewall, a push pull control on the instrument panel, Outlets and flexible ducting connecting the system. OPERATION: Ram air is ducted through an engine baffle inlet and heat exchange section of the exhaust muffler, to the shut-off valve at the firewall. The heated air flows from the shutoff valve into a duct across the aft side of the firewall, where it is distributed into the cabin. The shut-off valve, operated by a push-pull control marked "CABIN HT" located on the instrument panel, regulates the volume of heated air entering the system. Pulling the control full out, supplies maximum flow and pushing control in gradually decreases flow shutting off flow completely when the control is pushed full in. DEFROSTER SYSTEM: The defrosting system is comprised of the duct across the aft side of the firewall, a defroste...

FUEL SYSTEM Fuel is gravity fed from the metal wing tanks, through a shutoff valve and a fuel strainer, to the carburetor. Positive ventilation is provided by a vent line and a check valve assembly located in the left wing tank, a crossover line connecting the two tanks together, and a vented fuel cap on the right hand tank. The vent line from the check valve assembly extends overboard through the lower wing skin adjacent to the left wing strut. A fuel drain is located between the shutoff valve and the strainer Fuel shutoff valve is a two-position ON-OFF valve, located in the floor area between the pilot and copilot seats. The handle is safety wired in the "ON" position with .018" diameter mild steel wire (tag wire), which will break easily if the handle must be turned "OFF" in an emergency. The manufacturer recommends replacement instead of repair or damaged, worn or inoperative valves. FUEL STRAINER: The fuel strainer is mounted at the firewall in the low...

CONTROL SYSTEM AILERON CONTROL SYSTEM : The aileron control system is comprised of push-pull rods, Bellcranks, cables, Pulleys, sprockets and roller chains, all of which link the control wheels to the ailerons. A control "Y" interconnects the control wheels to the aileron cables. CONTROL "Y": The control "Y" transforms rotation of the control wheels into pulling motion on the aileron cables by means of sprockets and chains. The "Y" is pivoted at the lower end to operate the elevator control system. WING FLAP CONTROL SYSTEM : The wing flap control system is comprised of an electric motor and transmission assembly, drive pulleys, push-pull rods, cables and a follow-up control. Power from the motor and transmission assembly is transmitted to the flaps by a system of drive pulleys, cables and push-pull rods. Electrical power to the motor is controlled by two micro switches mounted on a floating arm assembly, by a camming lever and follow-up co...

Continuation training   is one of the requirement for renewal of AMEL by DGCA or renewal of Certification Authorisation by Quality Dept in any organisation. Continuation training is a two way process to ensure that certifying staff remain  current in terms of procedures , human factors and technical knowledge and that the organisation receives feedback on the adequacy of its procedures and maintenance instructions.   Interactive nature of continuation training, provide possibility of involvement of the quality department to ensure that feedback is actioned.  Procedure is required to ensure that feedback is formally passed from the training department to the quality department to initiate action. Content of continuation training  should cover changes in relevant requirements such as  CAR-145 , changes in organisation procedures and the modification standard of the products being maintained plus human factor issues identified from any internal...

Introduction : In Quality Manager/controlling officer meet held on 4 th November 2011 at New Delhi, It is observed by dgca that organisation are not preparing and following the standard procedure. Regional DGCA office has been directed to carry out audit for Procedure Manual.                  Procedure Manual is Level 2 document and it need not require approval from DGCA. But, it is mandatory to prepare manual for each department and get approval from Quality Manager.      Definition -  Procedure:A fixed, step-by-step sequence of   activities   or   course of action   (with   definite   start and end   points ) that must be followed in the same   order   to correctly perform a   task . Repetitive procedures are called   routines . A procedure specifies the way to perform an activity (HOW), e.g. Internal Audit procedure. Pr...