Term
| In what kind of cylinders does the reduced high-pressure oxygen system in the P-3 store oxygen? |
|
Definition
| In three, 514 cubic-inch, high-pressure cylinders |
|
|
Term
| What does AGOS stand for? |
|
Definition
| Aircraft Gaseous Oxygen System |
|
|
Term
| Since the P-3 is a pressurized aircraft, what type of system is its oxygen system considered? |
|
Definition
| A supplementary or emergency life support system |
|
|
Term
| Regulators are provided for what 3 crewmembers on a P-3? |
|
Definition
| Pilot, Copilot, and Flight Engineer |
|
|
Term
| With what are cabin crewmembers provided on a P-3? |
|
Definition
|
|
Term
| For how long is the AGOS capable of supplying an active crew of 3 at 25,000? |
|
Definition
|
|
Term
| What are the 4 modes of operation provided by the Reduced High-pressure Demand Sytem? |
|
Definition
- Diluter-demand
- Demand
- Automatic Safety Pressure
- Emergency
|
|
|
Term
| What is provided in the Diluter-demand mode of the Reduced High-pressure Demand System? |
|
Definition
| Ambient air oxygen mixture |
|
|
Term
| What is provided in the Demand mode of the Reduced High-pressure Demand System? |
|
Definition
| 100% oxygen flow dependant on the user and the position of the diluter lever |
|
|
Term
| What is provided in the Automatic Safety Pressure mode of the Reduced High-pressure Demand System? |
|
Definition
| Positive pressure is delivered to the mask at altitudes above 30,000 feet |
|
|
Term
| What mode of the Reduced High-pressure Demand System provides positive pressure to the mask at altitudes where positive pressure is not automatic? |
|
Definition
|
|
Term
| What are the two parts in the automatic self-opening valves in the cylinders for the AGOS? |
|
Definition
| A fusible metal plug and a frangible disc |
|
|
Term
| At what temperature will the fusible metal plug on an AGOS cylinder melt? |
|
Definition
| Between 208 and 220 degrees F |
|
|
Term
| At what pressure will the frangible disc on an AGOS cylinder rupture? |
|
Definition
|
|
Term
| Where are the AGOS cylinders located? |
|
Definition
| In a compartment below the pilot's seat. They are visible after removing a kick panel. |
|
|
Term
| Describe the Tubing and Hoses in the AGOS |
|
Definition
| Tubing is contructed of stainless steel with flexible hoses connecting lines to the cylinders. It is 5/16" diameter throughout the system |
|
|
Term
| How many gravity seating check valves are there in the Oxygen Manifold of AGOS? What is their purpose? |
|
Definition
| There are 6 gravity seating check valves. They prevent the flow of oxygen from one cylinder to another and from the cylinders through the filler valve |
|
|
Term
| What is the purpose of the Oxygen Manifold in AGOS? Where is it located? |
|
Definition
| The Manifold connects all cylinders into one common distribution line. It is located between the oxygen cylinders and the pressure reducer. |
|
|
Term
| Describe the AGOS Pressure Reducer? |
|
Definition
| A bellows type reducer used to decrease oxygen pressure from 1800 psi to a working pressure of 53 to 75 psi. |
|
|
Term
| Describe the Relief Valve in the AGOS Pressure Reducer? |
|
Definition
| A spring-loaded closed valve which relieves at 145 +/- 15 psi |
|
|
Term
| What happens to excessive pressure in AGOS at the pressure reducer and relief valve? |
|
Definition
| It exits through an overboard dump line causing a green blow out disc to blow out |
|
|
Term
| Where is the AGOS Pressure Reducer and Relief Valve assembly located? |
|
Definition
| Below the cockpit floor to the left of the pilot's seat |
|
|
Term
| How is the AGOS High-pressure Gauge calibrated? |
|
Definition
| 0 to 2,000 psi, in increments of 200 psi |
|
|
Term
| Where in the system is the AGOS High-pressure Gauge connected? Where in the cockpit is it located? |
|
Definition
| It is connected in the system before the Pressure Reducer, indicating the pressure in the Oxygen Cylinders. It is located on a bracket secured to the rear of the pilot's side console. |
|
|
Term
| Where are the three MD-1 regulators located in the cockpit? |
|
Definition
- On consoles to the left of the pilot's seat
- To the right of the copilot's seat
- On the right side near the top of the flight station circuit breaker for the flight engineer
|
|
|
Term
| What are the two components of the AGOS Oxygen Filler Valve and what does each do? |
|
Definition
- The Check Valve prevents the escape of oxygen from the system
- The Filter prevents the entry of foreign materials during system servicing
|
|
|
Term
| Where is the AGOS oxygen filler valve located? |
|
Definition
| In a recessed compartment on the left side of the fuselage below and aft of the pilot's windshield side panel |
|
|
Term
| Describe the AGOS smoke mask. Where is it located? |
|
Definition
| It is a full faced mask that contains a flap or curtain of rubber, which forms a ring around the inside of the mask, providing a leak proof seal around the face. It is located in the smoke mask stowage container adjacent to the flight station oxygen regulators. |
|
|
Term
| What does a ruptured green blow out disc in AGOS represent? |
|
Definition
| The Pressure Reducer has failed, which would cause loss of oxygen |
|
|
Term
| What are the 6 steps to servicing the AGOS? |
|
Definition
- Visually check the green blow out disc in the aircraft oxygen overboard dump line
- Ensure aircraft electrical power is off and the aircraft battery is disconnected
- Perform preoperational inspection on gaseous oxygen servicing trailer IAW applicable MIM
- Remove filler valve cap, attach the O2 Cart Servicing Hose, and service the system to 1800 psi at 70 degrees F
- Disconnect O2 cart, reinstall the filler valve cap, and secure access door
- Secure O2 cart IAW MIM
|
|
|
Term
| What are the 3 types of inspections performed on an AGOS? |
|
Definition
| Pre-Flight, Daily, and Special |
|
|
Term
| When is the Pre-Flight inspection performed and for how long is it valid? |
|
Definition
| It is conducted prior to the first flight of the day and each subsequent flight to ensure the airworthiness of the system. It is considered valid for 72 hours, provided that no flight occurs and no maintenance other than servicing has been performed. |
|
|
Term
| What is the purpose of the Daily inspection on AGOS and for how long is it considered valid? |
|
Definition
| It is conducted to examine the system to a greater depth than the preflight inspection, and is valid for 72 hours, provided that no flight occurs and no maintenance other than servicing is performed. |
|
|
Term
| What is the purpose of a special inspection on AGOS? |
|
Definition
| When equipment has a calendar time or flight hour requirement, or any other inspection other than normal maintenance inspections |
|
|
Term
| What is used for maintenance, quality control, and leak detection? |
|
Definition
|
|
Term
|
Definition
| All sound above 20,000 Hz not heard by humans |
|
|
Term
| Ultrasound is created by what 5 things? |
|
Definition
- Vibration
- Impact
- Turbulence
- Friction
- Electrical arcing or corona discharge
|
|
|
Term
| What are the 3 major parts to the UL101? |
|
Definition
- UL101 Receiver
- UT2000 Universal Transmitter
- Headset
|
|
|
Term
| What are the 6 steps to perfrom an AGOS Leakage Test? |
|
Definition
- Service the system to 1,800 psi at 70 degrees F
- Allow system to stabilize for one hour
- Record ambient air temperature and system pressure
- After 24 hours, record ambient air temperature and system pressure
- Check against temperature/pressure conversion table
- If a loss of 100 psi or more is noted, then system must be leak tested using MIL-L-25567 leak detection solution or Ultrasonic Leak Detector
|
|
|
Term
| Who are the only people who can service aircraft oxygen systems? |
|
Definition
Fully qualified technicians or those under the direct supervision of a qualified technician
(SAFTEY PRECAUTION) |
|
|
Term
| What must be done prior to servicing the AGOS? |
|
Definition
Electrical power must be removed and the aircraft battery should be disconnected
(SAFETY PRECAUTION) |
|
|
