Daily Inspection (DI)

General Inspection:

Ventilating Ram air inlet duct for cabin air.
Pitot Heads and static Vents
Drain holes and inspection of derbies on the fuselage
Antennas (underside)
Wheel nose tire
Nose oleo and Piston
Cover Pitot

Before going in depth about the further steps in the inspection, we need to know the areas of the planes that are used as a nomenclature to represent certain parts of the aircraft.
They are:
A1, A2, A3, A4, A5

A1 Internal
Ensure Gust lock- flaps 0 and brakes set

A2 External
Main wheel assembly brake

A2 Internal
Battery and flashlght
firstaid kit- seal check

A3 External
Inspect stabilizers, rudder, elevators, trim and geared tabs

A4 External
Inspect fire extinguishing indicator discs for evidence of extinguisher discharge.
Inspect wing strut
Inspect wing fuel vent outlet
Engine:
Inspect engine intake deflector and screen
Check for oil level
inspect propeller blade

A5 External
Inspect fire extinguishing indicator discs for evidence of extinguisher discharge.
Inspect wing strut
Inspect wing fuel vent outlet
Engine:
Inspect engine intake deflector and screen
Check for oil level
inspect propeller blade

Operational Checks:

Funtional test of position lights, anticollision lights and landing lights.
CVR (Cockpit Voice Recorder)
Beacon test
Portable oxygen test
Emergency exit door and window

Comments

ATA numbering system

An aircarft has a lot of parts, manufacturing them is one thing maintaining them is some other level challange. Thus to describe what needs to be done for what part requires a lot of documentation. The easy way engineers have come up is to name each section of the aircraft as different title numbers. ATA- Air Traffic association. It was created by people in ATA so called ATA chapters. with 100 chapters ATA So when some one says ATA chapter 72 it will always mean engine. ATA 27 flight controls ATA 32 landing gear ATA 72 is engine and so on If we go even deeper. ATA 72-00-01 is fan module ATA 72-00-02 is core module ATA 72-00-03 is HPT Module ATA 72-00-04 is LPT module ATA 72-00-05 is AGB module and so on

Thrust Reversal

Thrust Reversal consist of 2 words. Thrust and reversal. This is a process adopted to reduce the aircraft velocity during landing. It is a type of braking system. The braking system in an aircraft consist of: 1. Landing Gear brakes. 2. Ground Spoilers 3. Thrust reversal. So while talking about the thrust reversal, the type of aircraft has an important role to play. For the propeller driven aircraft the reverse thrust is achieved with the appropriate change in the blade angle. However for a jet engine the reversal of the thrust come in basically 2 major types: 1. Reversal by the use of hot exhaust. 2. Reversal by the use of cold bypass air. Classification in terms of mechanism used are: 1. Target (bucket) type Operated With hydraulics in turbojet engine 2. Clamshell (Cascade) type Operated with Pneumatics in Low bypass turbofan engine 3. Coldstream type The cold stream reverser system is activated by an air motor in High bypass turbofan engine ...

PT6A-27

General Engine specification Blog1. It is a turboprop engine- free turbine . This is an engine used in airplanes like DHC-6 Twin Otter 300 Harbin Y-12 Beechcraft This a Pratt and Whitney Canada Engine. One of the most famous and successful company to produce turboprop engine. Compressor It consist of 3 stage axial compressor and 1 stage centrifugal flow compressor. Combustion Annular reverse flow (right to left according to diagram above) combustion with 14 simplex burner (Glow plugs) Turbine 1 stage free power turbine and 1 sage gas generator power turbine.(Left to right according to diagram above) Other specs: Fuel type: aviation kerosine Overall pressure ratio- 6.3:1 Air mass flow: 5.3 lb/s Power to weight ration: 2.14 hp/lb

aerobysam

Search This Blog