Welcome Back

Sign in to your PART66Online account

or use email
Forgot password?

Don't have an account? Register here

Q&A Forum

1106 questions found

Module 5. Digital techniques / Electronic instrument systems

In an Arinc 429 Word label-representing heading is 320, this is represented in bits 1- 8 as

  • 01011001.
  • 00001011.
  • 01101000.
hasdim_1969 asking:

HOW???

Module 1. Mathematics

The ratio of 6:4 can also be expressed as

  • 64%.
  • 66%.
  • 150%.
Danish Abeer asking:

Can anyone tel me this how?

Module 9. Human factors

The blood/alcohol limit is

  • 40 milligrams of alcohol per 100 millilitres of blood as the single universal limit applying equally to commercial aircrew, air traffic controllers and all maintenance engineers.
  • 20 milligrams of alcohol per 100 millilitres of blood as the single uniform limit for commercial aircrew, air traffic controllers and licensed aircraft maintenance engineers alike.
  • 20 milligrams of alcohol per 100 millilitres of blood for commercial aircrew, air traffic controllers and 80 milligrams of alcohol per 100 millilitres of blood for maintenance engineers.
hassaanwasti@gmail.com asking:

i read in cap 715 that its 20mg per 100ml of blood. can anyone one confirm?

Module 9. Human factors

Who is most likely to deviate from standard procedure?

  • Young, inexperienced man.
  • Over confident, young man.
  • Fatigued, experienced man.
hassaanwasti@gmail.com asking:

why

Module 1. Mathematics

Dividing 4 1/2 by 2 1/6 gives the answer of

  • 54/26.
  • 25/12.
  • 21/3.
benzhi asking:

pls anyone.. calculate for goodness sake

Module 1. Mathematics

What is 738 in binary coded decimal?

  • 1011110010
  • 111100010
  • 11100111000
benzhi asking:

what bullshit is this?

Module 15. Gas turbine engine

A fire detection system that operates on the rate of temperature rise is a

  • thermocouple system.
  • thermal switch system.
  • continuous loop system.
titanas20 asking:

Why not "continuous loop system"?

Module 17. Propeller

Minor surface damage located in a repairable area, but not on the leading or trailing edges of aluminium blades, may be repaired by first

  • filing with a half round or flat file.
  • sanding and applying a proper filler.
  • filing with a riffle file.
mwongela asking:

now am torn between two answers. previously the system gave me the answer to be sanding and applying a proper filler and now it is saying the right answer is filing with a riffle file.which one is the correct answer?

Module 17. Propeller

When governor spring load is less than governor weights, the CSU is in

  • overspeed.
  • underspeed.
  • normal.
mwongela asking:

how? i dont get it

Module 17. Propeller

The purpose of the pitch change cams is to

  • convert rotary motion to linear motion.
  • prevent windmilling.
  • convert linear motion to rotary motion.
mwongela asking:

is it not for changing rotary to linear?

Module 2. Physics

Transfer of heat from a hot area to a cold area is

  • conduction.
  • convection.
  • refraction.
Nino asking:

Area should be defined for this question.
if solid yes your answer is right otherwise all 3 choices are correct.

Module 14. Propulsion

Manifold pressure is measured

  • at inlet port above and below ambient conditions
  • at inlet port above and below standard atmosphere at sea level
  • at inlet port indicating boost pressure
Indrajith asking:

at inlet port above and below standard atmosphere at sea level....
If a manifold pressure gauge is measuring in a supercharged engine it will measure above 29.92 in Hg.If the supercharge is not use it will measure below that figure. EHJ Pallett Integrated Instruments Page-355

Module 14. Propulsion

When using a test set to test an EGT thermocouple circuit

  • no compensation for ambient temperature is required
  • only consider ambient temperature compensation if the ambient temperature is over 20oC
  • always compensate for ambient temperature
Indrajith asking:

Always compensate for ambient temperature....
To test the system the test set has to be trimmed for ambient temperature,as the system when in operation is adjusted for ambient temperature by the compensating resistor.This is stated in B 737 AMM.

Module 8. Basic aerodynamics

The ISA

  • defines a standard atmosphere model.
  • is referenced from the equator.
  • is taken from 45 degrees latitude.
Syed Hussain asking:

I think The ISA assume a standard day is the right answer

Module 17. Propeller

How is the efficiency of a turbo prop engine assessed?

  • By correcting propeller RPM for ambient Air temperature and barometric pressure.
  • By comparing compressor and propeller RPM against a reference figure.
  • By comparing torque meter pressure against a reference figure.
mathema asking:

Please write your comment here.

Module 15. Gas turbine engine

After placing an engine in an M.V.P envelope

  • check humidity indicator after 12 hours.
  • check humidity indicator after 24 hours.
  • check humidity indicator after 48 hours.
titanas20 asking:

What is M.V.P?

Module 15. Gas turbine engine

Supervisory E.E.C sends its output to the

  • fuel valve.
  • H.M.U/F.F.G.
  • EGT thermocouple circuit.
titanas20 asking:

What is M.U/F.F.G.?

Module 12. Helicopter aerodynamics, structures and systems

What is the advancing blade on a helicopter doing?

  • Going to the highest point.
  • Increasing in lift.
  • Increasing in drag.
joy2088 asking:

please tell me answer

Module 15. Gas turbine engine

Why is the hydromechanical governor fitted to a gas turbine engine fuel pump?

  • To enable the engine to operate over a wide range of fuel SGs.
  • To enable efficient control of fuel flow to be maintained at altitude.
  • To enable the engine to operate over a wide range of fuel flow.
titanas20 asking:

What is SGs?

Module 15. Gas turbine engine

Small cuts in a M.V.P. engine storage bag can be repaired

  • with adhesive PVC tape.
  • by vulcanising.
  • by replacing M.V.P.
titanas20 asking:

What is M.V.P.?

Module 15. Gas turbine engine

When testing an E.G.T system

  • the O.A.T is always taken into consideration.
  • the O.A.T is neglected.
  • O.A.T is only taken into consideration when over20degreesC.
titanas20 asking:

What is O.A.T?

Module 15. Gas turbine engine

E.I.U ignitor plugs receive their electrical supply from

  • discharge inductor.
  • starter system electrical circuit.
  • discharge capacitor.
titanas20 asking:

What is "E.I.U"?

Module 15. Gas turbine engine

A fuel or oil fire is defined as a

  • class B fire.
  • class C fire.
  • class A fire.
titanas20 asking:

So What depend to class A fire (and "C")?

Module 1. Mathematics

What is 738 in binary coded decimal?

  • 1011110010
  • 111100010
  • 11100111000
Danish Abeer asking:

Can anyone tell me that how this answer come?

Module 15. Gas turbine engine

How is engine oil usually cooled?

  • By a fuel/oil cooler.
  • By ram air.
  • By bleed air.
malowth asking:

I thought the primary purpose of the fuel/oil heat exchanger was to heat the fuel, and ram air through the oil cooler was the primary oil cooling medium. Any thoughts?

We use essential cookies to keep you signed in, plus anonymous analytics to understand how the site is used. Cookie-based analytics is set only with your consent. See our Privacy & Cookie Policy.