HKIE Professional Assessment - Aircraft Discipline flashcards

33 cards. Read the term and the definition here. The deck at the top of this page is optional.

HKAR-145

Hong Kong regulation for approved maintenance organisations; defines facility, personnel, data, and quality system requirements for aircraft maintenance, including the issue of certificates of release to service.

Certificate of Release to Service

A certification signed by authorised certifying staff confirming that maintenance was performed in accordance with approved data and that the aircraft or component is airworthy for release.

Airworthiness Directive

A mandatory airworthiness requirement issued by the state of design and adopted by the authority; compliance is compulsory and must be recorded with method and date.

Service Bulletin

A manufacturer-issued document recommending or requiring a modification or inspection; it becomes mandatory only when referenced by an AD, design approval, or approved maintenance programme.

Minimum Equipment List

An approved document listing equipment that may be inoperative while the aircraft remains airworthy, with the associated operational and maintenance procedures and rectification intervals.

Configuration Deviation List

An approved list of missing external parts (e.g. fairings) that may be accepted for dispatch with defined performance penalties and no maintenance action required.

Continuing Airworthiness

The set of processes ensuring an aircraft complies with airworthiness requirements throughout its life, including maintenance programme management, AD tracking, and defect control.

Major Modification

A change to type design that affects airworthiness, weight and balance, structural strength, or systems operation; it requires approved design data and authority approval.

Damage Tolerance

A structural design and assessment principle ensuring that undetected damage will not reduce residual strength below a defined level before inspection detects it.

Allowable Damage Limit

The maximum damage size that can be left unrepaired until the next scheduled inspection, defined in the structural repair manual or approved design data.

Corrosion Prevention Control Programme

A scheduled inspection and treatment programme targeting corrosion-prone areas, with corrosion levels defining blend-out, repair, or replacement actions.

Eddy Current Testing

A non-destructive method using induced electrical currents to detect surface and near-surface cracks and defects, commonly used on aluminium structure.

Magnetic Particle Inspection

A non-destructive method using magnetic fields and ferromagnetic particles to reveal surface and near-surface defects in ferromagnetic materials such as steel components.

Dye Penetrant Inspection

A non-destructive method using a penetrant dye to reveal surface-breaking defects in non-porous materials, with excess penetrant removed before developer application.

Independent Inspection

A dual inspection of a critical task by a second authorised person who did not perform the work, providing an error-capturing defence for safety-critical connections.

Technical Log

The aircraft record containing defects, deferred items, maintenance releases, and servicing data, carried on board and completed by flight and maintenance crew.

Mass and Balance

The calculation ensuring aircraft weight and centre of gravity remain within limits for all loading states, using moment arms and total moments.

Centre of Gravity

The point at which the aircraft's weight is considered to act; computed as total moment divided by total weight and required to lie within forward and aft limits.

Forward CG Limit

The most forward permissible centre of gravity, set by elevator authority and nose-wheel or tail loading considerations; exceeding it reduces pitch control.

Aft CG Limit

The most aft permissible centre of gravity, set by static margin and tail-load considerations; exceeding it reduces longitudinal stability.

Standard Atmosphere

A reference atmosphere with sea-level temperature 15 °C and pressure 1013.25 hPa, and a tropospheric lapse rate of about 1.98 °C per 1000 ft.

Pressure Altitude

The altitude indicated when the altimeter subscale is set to 1013.25 hPa; it differs from true altitude by the local pressure error.

V1 Speed

The take-off decision speed at which an engine failure can be safely continued or stopped within the runway; it determines the accelerate-stop and accelerate-go distances.

ETOPS

Extended-range twin-engine operational performance standards; defines the maximum diversion time from a suitable airport and requires approved maintenance and operational procedures.

Reliability Programme

A data-driven process monitoring maintenance effectiveness through alert levels and defect rates, triggering investigation and corrective action when thresholds are exceeded.

Quality Audit

An independent assessment of maintenance organisation compliance with regulations and procedures, generating findings and corrective actions tracked to closure.

Calibration Traceability

The property of a measurement instrument whose accuracy is linked to a national or international standard through an unbroken chain of comparisons.

Life-Limited Part

A component whose service life is restricted by cycles, hours, or calendar time and which must be removed from service at the defined limit.

EWIS

Electrical Wiring Interconnection Systems; wiring design and maintenance requirements covering separation, arc fault protection, and enhanced zonal inspection.

Fail-Safe Design

A design approach ensuring that a single failure will not cause a catastrophic condition, achieved through redundancy, monitoring, or safe-life components.

Permit to Fly

An authorisation allowing flight of an aircraft without a valid certificate of airworthiness for a specific purpose, subject to defined limitations.

Mandatory Occurrence Reporting

A regulatory scheme requiring reporting of incidents and defects that could affect airworthiness, submitted to the authority within prescribed timeframes.

Just Culture

A safety culture approach distinguishing unintended errors from reckless violations, encouraging reporting while retaining accountability for gross negligence.