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
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
The leak measurement valve operation is inhibited during flight
What is a RAT and what is its purpose?
It pressurizes the green hydraulic system in emergency conditions.
The Ice and Rain Protection system permits aircraft operation without restriction in icing conditions or heavy rain. Critical areas of the aircraft are protected by hot air or electrical heating. List 5 systems where hot air or electrical heating is applied.
Slats, Engines, Windows, Windshield Wipers & Rain Repellent System, Static Probes, Pitot Probes, Drain lines, Escape Slide locking mech
The ice detection system sends warning mesages to the flight crew when icing conditions and heavy icing are detected. The ice detectors work according
a vibration frequency shift principle
The slats on the wing's leading edge are protected against ice through the wing anit-ice system. Ice formaiton is prevented by
active heating through telespopic pneumatic tubes with hot air comig from the pneumatic system
The cockpit comprises various panels. List 2 control panels.
OHP (Overhead Panel), Pedestal, Glareshield, Main Instrumental Panel
The Electronic Instrumental System (EIS) comprises
an Electornic Flight Instrument System (EFIS) and an Electronic Centralized Aircraft Monitoring System (ECAM)
The EFIS comprises
- two Primary Flight Displays (PFD)
- two Navigation Displays (ND)
The ECAM comprises
- an Engine and Warning Display (E/WD)
- a System Display (SD)
What is the purpose of the landing gear shortening mechanism?
It decreases the main landing gear leg length, so that it can go into the main gear bay
The landing gear doors are locked in the closed position by means of
mechanical door uplock assemblies (closed mechanically, opended hydraulically or mechanically)
The landing gear was extended by free fall gravity extension How is this visible when the aircraft has landed?
All landing gear doors stay open
The geometry of the main landing gear leg and the pivoting four wheel bogie beam changes during retraction or extension. The angle of the bogie beam with respect to the leg assembly is driven by
The crew oxygen system provides oxygen to the cockpit crew consist of
a fix high pressure source and a low pressure distribution
The masks presented to the passengers in case of cabin decompression provide
The purpose of the pneumatic system is to supply aircraft users with pressurized air. Mention 3 aircraft users.
- Air Conditioning System
- Water Tank pressurization
- Hydraulic Reservoir pressurization
- Engine starting
- Wing / engine Anti-ice
What are the sources to supply high pressure air?
- Engine HP compressors
- APU
- two HP ground connectors
What is the purpose of the Precooler?
The precooler is an air to air heat exchanger. The cold fan air flow crosses the hot air for cooling reasons. The Fan Air Valve pneumatically regulates the fan air flow to the precooler.
What is the purpose of the APU?
The APU is an independent source for pneumatic and electrical power.
How is the APU started?
APU Battery driven electrical starter
Name the realted Engine Modules
When does an Airline need an AOC?
If an airline intents to operate in commercial air transport
Draw the Organisation Chart and name the persons / functions required to get an AOC.
After application with Form 44.20 for the above function holders (persons for AOC), on which Form the competent authority will give the approval?
Form 4
List 5 continuing airworthiness relate documents which must be approbed by the competent Authority and which are needed to get an AOC.
- CAME
- MEL/CDL
- Maintenance Program
- Reliability Program
- OM's
- Contracts
- Aircraft Log Sys
List 5 Certificates which are handed out by the competent Authority after fulfilling all requirements (relevant for each singel Aircraft)
- CofA
- CofR
- Noise Certificate
- Operations Specification
- ARC
- Insurance certificates
- Ensures that Maintenance performed iaw approved MP;
- Ensures that the EASA & FOCA Requirements are fulfilled;
- Ensures that Operation iaw MEL;
- Ensures that appropriate contracts are in place & fulfilled;
- Ensures that Trainings are performed accordingly.
Write in full text the following acronyms:
- ICAO:
- ECAC:
- EASA:
- FAA:
- DOT:
- IASA:
- IATA:
- IOSA:
- A4E:
- FOCA:
- CAA:
- ICAO: International Civil Aviation Organisation
- ECAC: European Civil Aviation conference
- EASA: European aviation safety agency
- FAA: Federal aviation administration
- DOT: Department of Transportation
- IASA: International Aviation Safety Assessment
- IATA: International Air Transport Association
- IOSA: IATA Operational Safety Audit
- A4E: Airlines for Europe (former AEA)
- FOCA: Federal Office of Civil Aviation
- CAA: Civil Aviation Authorities
Which organisations are publishing laws?
- EASA
- FAA
- DOT
- CAAs (FOCA)
Which organisation is publishing AD's application for European carriers?
EASA
Where is the Main Base of IATA?
Montreal, Canada
Where is the Main Base of EASA?
Köln
The continuing airworthiness Regulation 1321/2014 comprises Annex I to Annex IV. What are this Annexes covering?
- Annex I = Part-M (continuing airworthiness req.)
- Annex II = Part-145 (maint. organisation req.)
- Annex III = Part-66 (certifying staff req.)
- Annex IV = Part-147 (Training Org. req.)
What is the main function of IATA and A4E?
Represent and promotes the intrests of european airlines
The Part-M is sectiones in two Sections: Section A and Section B. Which Sections are applicable to whom?
Section A: for Airline (Owner / Operator)
Section B: for Autorities
Does an AMC have law character?
No (Acceptable Means of Compliance - only Guidance material)
