KCSE 2014 Aviation Technology Paper 2 Questions with Marking Scheme

QUESTIONS 

STATION 1
INSTRUCTIONS
Fgure 1 shows the exploded view of light aircraft single disc brake assembly.
On the drawing paper provided:

1. Sketch in good proportion a pictorial view of the assembled unit.(7 marks)
2. Name the six parts labelled 1, 2, 3, 4, 5 and 6.(3 marks)
   

STATION 2
INSTRUCTIONS
Using the tools, materials and equipment provided, make an aircraft panel hinge shown in figure 2.(10 marks)

STATION 3
INSTRUCTIONS
Using the Bunsen burner, materials and tools provided carry out the following

1.                            
   1. Hold the piece marked K on the Burner and observe as it burns and fill the table below.
   2. Repeat a(i) on the piece marked L.
      

      	OBSERVATION	MATERIAL	APPLICATION
      K
      L

      (3 marks)
2. Using the materials and tools provided, carry out the following.
   Centre punch each of the materials marked M and N and fill the table below.
   

   	MARK OBSERVATION	MATERIAL	APPLICATION
   M
   N

   (3 marks)
3. Identify each of the following aircraft breakdown spares labelled P and R and fill the table below.
   

   	SPARE	USE	PROBABLE FAULT	MAINTENANCE REQUIREMENT
   P
   R

   (4 marks)

SECTION 4
INSTRUCTIONS
Study the aircraft component and do the following:

1.                    
   1. Identify the component and state its function.
   2. Remove the circlip. Let the examiner check your work.
   3. Name the parts painted Red, Blue and Yellow and state the function of each.
      Name                                           Function
      Red                                        ......................................
      Blue                                       ......................................
      Yellow                                     ......................................
   4. Observe two defects on the parts and state the effect of each.
      Defect                                      ......................................
      Effect                                      ......................................
   5. Assemble the component.
      Let the examiner check your work.(8 marks)
2.                    
   1. Explain how the component is operated.
   2. Give the major maintenance task on the component.(2 marks)

STATION 5
INSTRUCTIONS
Study the components labelled A, B and C and carry out the following

1.                            
   1. Identify the components
   2. State the type
   3. State the condition
   4. State the use.
      

      COMPONENT	IDENTIFICATION	TYPE	CONDITION	USE
      A
      B
      C

      (6 marks)
2. Study the aircraft fuel system components labelled D and E and do the following:
   1. Identify the parts.
      D....................................................
      E....................................................
   2. State where each is used.
      D....................................................
      E....................................................
   3. State two maintenance requirements.
   4. State two rejection criteria.(4 marks)

STATION 6
INSTRUCTIONS
Study the aircraft tyre provided and do the following

1. Identify the tyre defects labelled A to E, state the cause of each on an aircraft and complete the table below.
   

   ITEM	DEFECT	PROBABLE CAUSE
   A
   B
   C
   D
   E

   (5 marks)
2. State the importance of the parts marked White and Blue.
   WHITE....................................................
   BLUE.....................................................(2 marks)
3. Give three manufacturer's specifications on the tyre and the meaning of each.(3 marks)

STATION 7
INSTRUCTIONS
Study the markings on aircraft model labelled X and Y provided, representing imaginary arrangement of lines of forces according to aircraft design and do the following:

1. determine the correct arrangement of the lines of forces;(1 mark)
2. identify each of the lines on the correct arrangement and give reasons;(4 marks)
3. name points 5, 6 and 7 and state reason for the position of each;(3 marks)
4. give two advantages of the correct arrangement;

STATION 8
INSTRUCTIONS
The pilot for aircraft marked "A" has been cleared to taxi and encounters each of the scenarios 1ST, 2ND, 3RD, 4TH and 5TH as shown on the airfield plan provided.
Study each scenario and in the table below state the expected immediate action and reason for the action.

(10 marks)

STATION 9
INSTRUCTIONS

1. Connect the components as shown in figure 3.
   Let examiner check your work.(5 marks)
   
   
   1. Close switch S1, and S2, and state what happens.
   2. Select switch S2, to off position and state what happens.
   3. State the reasons behind your observations in b(i) and (ii).
      Reasons for observation in b(i) .................
      Reasons for observation in b(ii) ......................................(4 marks)
   4. State one application of each of the circuit modes in a(i) and a(ii).(1 mark)

STATION 10
INSTRUCTIONS
Study the four stroke engine component provided and do the following:

1.                  
   1. identify the component.
   2. state the material used for its manufacture.
   3. name type of gear.
   4. record the number of teeth. (2 marks)
2. Measure and record each of the following:
   1. diameter of the journal labelled A.
   2. height of the lobe labelled B.
   3. distance between lobes B and C.
   4. the angle of the lobe labelled B.4 marks)
3. Give the functions of:
   1. component
   2. areas painted
      Blue
      Red
      Yellow (2 marks)
4. Name two maintenance aspects and two possible faults:
   1. Maintenance aspects.
   2. Possible faults.(2 marks)