Ground Handling And Servicing Flashcards
Name at least three possible hazards that may be encountered during typical ground operations, such as during engine run-up or taxiing.
Fire during engine starting.
Turning props/rotors.
Prop or jet blast and inlet areas.
Other aircraft, vehicles, people, and obstacles.
Foreign objects.
High noise levels.
Hydraulic lock in radial engines.
Weathervaning of tail wheel aircraft.
What is the most generally used knot for tying down small aircraft?
The bowline
Describe the precautions that should be taken to protect life and property while starting and running at aircraft.
Study procedures in the airplane flight manual.
Ensure propeller or inlet is clear and check for loose debris.
Ensure that prop or jet blast doesn’t blow into hangers or other airplanes.
Have a fire guard nearby.
If an engine induction fire occurs while starting a reciprocating engine, what procedure should be followed to extinguish the fire?
Continue cranking the engine to start it and suck the fire into the engine.
If the engine doesn’t start, and fire continues to burn, extinguish the fire with a fire extinguisher.
What safety procedures must be observed, when hand propping a small aircraft engine?
Become thoroughly trained.
Have a qualified person in the cockpit.
Check the brakes.
Call “switch off” before moving the prop.
Have a solid footing.
When ready to start call “Contact” and listen for the reply.
Swing the prop with the flat of your hand and move back from the prop arc.
What procedure should be followed prior to starting a large radial engine to detect and/or prevent a hydraulic lock in the cylinders?
I pull the propeller through by hand for three or four complete revolutions. Resistance to the prop turning indicates possible hydraulic lock.
What is the cause of hydraulic lock in large radial engines?
Oil, seeps by the piston rings, and accumulates in the combustion chamber of the lower cylinders are, and cannot be compressed during the compression stroke.
What is meant by the term hot start when starting a jet engine?
Ignition occurs with an excessively rich mixture, leading to a rapid temperature rise that can exceed the exhaust gas temperature limit.
When towing an aircraft, should you use the tow vehicle or aircraft brakes to stop the aircraft?
Tow vehicle breaks.
Aircraft brakes may be used in an emergency.
Why should an aircraft technician become familiar with standard light signals?
Lights signals may be used when taxiing an airplane without a radio or whenever a radio becomes in operative on a tower controlled airport.
A mixture of aviation gasoline and jet fuel is used in a reciprocating aircraft engine. What are the possible results?
The engine may be damaged or destroyed.
What does the number 100 signify in 100 LL aviation gasoline?
It refers to the lean mixture performance number/octane rating of the fuel.
Is it permissible to use avgas in a turbine engine?
Limited operation may be allowed by the manufacture. Continued use may reduce efficiency due to lead deposits on the turbine blades.
What are some of the possible outcomes of using a lower grade of avgas than the specified grade?
An increased chance of engine damage due to detonation, a loss of engine power, and an increased probability of overheating.
Part 23.973 of the FAA regulations specifies that certain markings must be placed adjacent to fuel filler openings. What markings are used for reciprocating engine powered airplanes?
The filler openings must be marked with the fuel grade and the word “avgas”.
Describe the important precautions that should be observed when fueling an aircraft.
Ascertain use of correct fuel.
Properly ground aircraft and refueling unit.
Protect the aircraft surfaces from hose and nozzle damage.
The marking requirements for oil tank filler openings are specified by FAR 23.1157. What markings are required for a piston engine powered airplane?
The word “Oil”.
Permissible grades, and/or a reference to the appropriate airplane flight manual for permissible grades.
Where can the standard aircraft taxi hand signals be found?
In the aeronautical information manual (AIM)
Under what conditions should a reciprocating engine be pre-oiled?
Prior to starting a new engine or one that has been preserved for storage.
Under what conditions may an automobile gasoline be used in an aircraft engine?
Only if approved by the FAA, usually by the issuance of a supplemental type certificate (STC).
What are the indications of water in aircraft fuel after draining a sample from the fuel sumps?
The sample may have a cloudy or hazy appearance, or a solid slug of water.
