MARO HS16
MARO HS16
MARO HS16
If a mechanic is using a Torquemeter, what he must check first?
That the torquemeter is labelled and that the due date for next calibration has not expired
A commercial transport aircraft is equipped with a set of service points for system servicing and refilling of system fluids (liquid or gaseous). Mention 5 examples of such service points.
- Portable water filling
- IDG Oil filling
- APU Oil filling
- Engine Oil filling
- Hydraulic Oil filling (Bremsflüssigkeit)
- Oxygen System
- Toilet Servicing (leeren)
The basic structure of a commercial transport aircraft is mainly made of Aluminium alloys. On which structural components no Aluminium alloy is used and what instead?
- Tital alloy (engine)
- Engine Pylon, engine disks
Composite materials are also extensively used in aircraft structures. Mention 3 examples of aircraft parts, which are most commonly produced with composite materials.
- flaps, flap track fairings, spoiler, belly fairing
- radome, stabilizer, L/G doors, naccelle rowlings
A line maintenance engineer shall exchange one of several identical components on an aircraft. He will be able to identify the component’s location by means of the
- Major zone, zone and sub zone numbers
- FIN number (Functional Identification Number)
Aircraft systems and structures are identified by means of a specific classification system. Name it.
ATA chapters (Air Transport Assocciation System)
For maintenance purposes, mainly related to the landing gear, four jacking points are provided. Where have they located?
- one below each wing
- one in front of the nose landing gear bay
- one safety point under the rear fuselage point
The air conditioning system basically ensures
- temperatur regulation
- ventilation and pressurisation
Which are the controllers related to the pressurization system?
CPC 1 & CPC 2
Correct cabin pressurization is obtained by controlling the conditioned air discharge through
two outflow valves
Which and how many valves do prevent excessive positive or negative differential pressure?
- Two Safety Valves (installed on aft pressure dome)
- One Negative Pressure Relieve Valve (installed on FWD Fuselage)
Mention 5 communication systems installed on A330 Aircraft.
- 2 HF / 3VHF Systems
- SELCAL (selective calling)
- ACARS (Aicraft Communication Addressing and Reporting System)
- SATCOM System
- Passenger Address System
- CIDS (Cabin Intercommunication Data System)
- IFE
- Interphone communication System
- Cockpit Voice Recorder
- CPDLC
For what reason interphones are used – mention 3
- Cabin interphone (Cabin - Cockpit)
- Flight interphone (Ground engineer)
- Service interphone (com. between verious interphones)
Mention the possible supply sources for the aircraft’s electrical systems
AC electrical power supplied to the aircraft systems has following voltage/frequency characteristics:
115V / 400Hz
How many Batteries are installed (name it)?
3 Batteries (2 Main Batteries BAT 1+2; 1 APU Battery)
How are the main electrical systems feeded if during flight both IDG and the APU Generator fails?
With the Emergency Generator (Constant Speed Motor / Generator) driven by the green hydraulic system & RAT activation
What are the aircraft equipment and furnishings?
- the cockpit
- the passenger compartment
- the cargo compartments
- the avionics compartment
- the emergency equipment
What is the Nacelle and what is the purpose of it?
- Nacelle is the aerodynamic structure around the basic engine (Nose Cowl or Intake Cowl, Fan Cowls, Thrus Reverser, Exhaust Nozzle and Exhaust Plug)
- The purpose is to prevent damage to the basic engine, to smoothout the Fan Air Flow, give additional strenght to the engine structure.
Write in full text the following acronyms:
- DFDR:
- THS:
- RAT:
- CVR:
- FCPC:
- SFCC:
- ACARS:
DFDR: Digital Flight Data Recorder
THS: Trimmable Horizont Stabilizer
RAT: Ram Air Turbine
CVR: Cockpit Voice Recorder
FCPC: Flight Control Primary Computer
SFCC: Slat/Flap Control Computer
ACARS: Aicraft Communication Addressing and Reporting System
Which compartments are given to load freight?
FWD, AFT and BULK Cargo compartments
The fire protection system consists of
The flight controls are driven by which hydraulic system?
Green, Blue and Yellow Hydraulic Systems
The roll movement is achieved by which surfaces?
2 Ailerons and 5 spoilers on each wing
A computer arrangement permanently controls and monitors the flight control surfaces. Name the involved computers
3 FCPC, 2 FCSC, 2 SFCC, 2 FCDC
All the flight controll surfaces are electrically controlled and hydraulically operated. Which flight Controlls (actuators) are backed-up with mechanical cables?
- THS (Pitch axis) -> Trimmable horizontal stabilizer
- Rudder (Yaw Axis)
The 3 principal flight control modes are
The purpose of the Manoeuvre Load Alleviation (MLA) function is to reduce the loads applied to the outer wing structure during high g manoeuvre. Explain the function's principle.
The function is achieved by 2 ailerons & 3 external spoilers on each wing. These surfaces are deflected upwards on both wings.
Fill in the missing word within the below shown "fly by wire" philosophy.
Auto Pilot or Pilot command/order - Computed order - ...
Feedback / Aircraft response
What are the main advantages of the "fly by wire" philosophy?
Improvement in redundancy, in handling qualities and thus in performances.
Name the three Flight Laws.
- Normal Law
- Alternate Law
- Direct Law
Name all available Fuel Tanks.
- Center Tank
- LH & RH Inner Wing Tanks
- LH & RH Outer Wing Tanks
- LH & RH Wing surge vent Tanks
- Trim Tank
- Ventilisation Tank / Vent Box
From which Fuel Tank the engine are feeded?
LH & RH Inner Wing Tanks (Collector Cell)
Are the Fuel Tank Pumps interchangeable?
The purpose of the Trim Transfer System is to
control the center of gravity position
There are a number of Magnetic Lever Indicators installed. For what reason?
To determine the physical Aircraft fuel volume in the tanks, if the indication system is inoperative or showing a wrong value.
The aircraft is equipped with three hydraulic systems which are connected to each other. True or False?
False! Green, Blue and Yellow System are fully independent
In normal operation the Hydraulic Systems are powered by Engine Driven Pumps (EDPs). What is the nominal pressure?
3000 psi
Engines are not running and the yellow electrical pump for cargo door opening is not functioning. What can be done?
Cargo door opening with the mechanical hand pump (located at the yellow ground service panel)
Which is the main Hydraulic System?
Green Hydraulic System
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Cartes-fiches
A line maintenance engineer shall exchange one of several identical components on an aircraft. He will be able to identify the component’s location by means of the
- Major zone, zone and sub zone numbers
- FIN number (Functional Identification Number)
Aircraft systems and structures are identified by means of a specific classification system. Name it.
ATA chapters (Air Transport Assocciation System)
For maintenance purposes, mainly related to the landing gear, four jacking points are provided. Where have they located?
- one below each wing
- one in front of the nose landing gear bay
- one safety point under the rear fuselage point
The air conditioning system basically ensures
- temperatur regulation
- ventilation and pressurisation
Which are the controllers related to the pressurization system?
CPC 1 & CPC 2
Correct cabin pressurization is obtained by controlling the conditioned air discharge through
two outflow valves
Which and how many valves do prevent excessive positive or negative differential pressure?
- Two Safety Valves (installed on aft pressure dome)
- One Negative Pressure Relieve Valve (installed on FWD Fuselage)
Mention 5 communication systems installed on A330 Aircraft.
- 2 HF / 3VHF Systems
- SELCAL (selective calling)
- ACARS (Aicraft Communication Addressing and Reporting System)
- SATCOM System
- Passenger Address System
- CIDS (Cabin Intercommunication Data System)
- IFE
- Interphone communication System
- Cockpit Voice Recorder
- CPDLC
For what reason interphones are used – mention 3
- Cabin interphone (Cabin - Cockpit)
- Flight interphone (Ground engineer)
- Service interphone (com. between verious interphones)
Mention the possible supply sources for the aircraft’s electrical systems
AC electrical power supplied to the aircraft systems has following voltage/frequency characteristics:
115V / 400Hz
How many Batteries are installed (name it)?
3 Batteries (2 Main Batteries BAT 1+2; 1 APU Battery)
How are the main electrical systems feeded if during flight both IDG and the APU Generator fails?
With the Emergency Generator (Constant Speed Motor / Generator) driven by the green hydraulic system & RAT activation
What are the aircraft equipment and furnishings?
- the cockpit
- the passenger compartment
- the cargo compartments
- the avionics compartment
- the emergency equipment
What is the Nacelle and what is the purpose of it?
- Nacelle is the aerodynamic structure around the basic engine (Nose Cowl or Intake Cowl, Fan Cowls, Thrus Reverser, Exhaust Nozzle and Exhaust Plug)
- The purpose is to prevent damage to the basic engine, to smoothout the Fan Air Flow, give additional strenght to the engine structure.
Write in full text the following acronyms:
- DFDR:
- THS:
- RAT:
- CVR:
- FCPC:
- SFCC:
- ACARS:
DFDR: Digital Flight Data Recorder
THS: Trimmable Horizont Stabilizer
RAT: Ram Air Turbine
CVR: Cockpit Voice Recorder
FCPC: Flight Control Primary Computer
SFCC: Slat/Flap Control Computer
ACARS: Aicraft Communication Addressing and Reporting System
