Fatigue Failure – Fatigue failure of metal components is by far the most common type of the failure of aircraft components. Fatigue Failure is defined as the progressive and localized structural damage that occurs when a material is subjected to repeated or fluctuating loads (cyclic loading). The maximum stress values are less than the ultimate [...]
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Posted in Aircraft Structure Terms, Aviation Terms | Tagged Aviation Safety, Engineering, Maintenance, Structures
Aircraft Certification Office (ACO) is the field branch of the FAA Aircraft Certification Service. The project ACO has geographic responsibility for finding the design complies with applicable airworthiness standards. It administers and secures compliance with agency regulations, programs, standards, and procedures governing the design approval of replacement and modification parts. The main responsibilities of the [...]
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Posted in FAA Terms | Tagged ACO, DER, Engineering, FAA, PMA
ACO is a FAA Acronym for: Aircraft Certification Office. ACOs assist with: Design approval and certificate management US production approvals Engineering and analysis questions Investigating and reporting aircraft accidents, incidents, and service difficulties Designated Engineering Representatives (DER) oversight Currently there are 10 FAA Aircraft Certification Offices (ACOs) : ACO Address & Contact Info Geographic Area of [...]
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Posted in Abbreviations and Acronyms, FAA Terms | Tagged ACO, Acronym, DER, Engineering, FAA |
Designated Engineering Representatives – A FAA designee, a DER may approve engineering technical data within the limits of his/her authority by means of FAA Form 8110-3 and, when authorized by the ACO, may witness FAA compliance tests and perform compliance inspections. DER’s will follow the procedures of FAA Order 8110.4, Type Certification Process. The specific [...]
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Posted in Aircraft Structure Terms, FAA Terms | Tagged Airworthiness, DER, Engineering, FAA, Inspection
Seat Primary Load Path – The components within the seat that carry the load from the point of load application to the structure that reacts the load from the seat system or sub- system. The primary load path may be segmented into its discrete elements, depending on the parameter being evaluated, as follows: Structural: from [...]
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Posted in Aircraft Systems Terms, FAA Terms | Tagged 16G, Aircraft, Airline, Engineering, FAA, Seats
Similar Design Philosophy – A design which uses the same: Method of construction and manufacturing process (for example, machin versus built-up part), Detail part materials (for example, alloys or heat treat), Load path, Geometry, including section properties, except for minor differences resulting from space limitations within the seat or aircraft interface, and Attachment method, except [...]
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Posted in Aircraft Systems Terms, FAA Terms | Tagged 16G, Aircraft, Airline, Engineering, FAA, Seats
Instability Failure – An instantaneous loss of the load-carrying capability of a structural member (for example, the collapse of a column). – AC 25.562-1B
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Posted in Aircraft Systems Terms, FAA Terms | Tagged 16G, Aircraft, Airline, Engineering, FAA, Seats
Occupant Position – The static relationship of the occupant relative to fixed points on the seat. This is assessed using the Seat Reference Point (SRP), as defined in Society of Automotive Engineers Aerospace Standard AS8049 Revision A. – AC 25.562-1B
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Posted in Aircraft Systems Terms, FAA Terms | Tagged 16G, Aircraft, Airline, Engineering, FAA, Seats
Rational Analysis – An analysis based on good engineering principles, judgment, and/or accepted methodology. This can include, but is not limited to, static/dynamic load comparison, static strength analysis, comparative static/dynamic strength analysis, linear static and non-linear finite element analysis, and inspection. – AC 25.562-1B
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Posted in Aircraft Systems Terms, FAA Terms | Tagged 16G, Aircraft, Airline, Engineering, FAA, Seats
Energy Absorber Bottom-Out – The energy absorber bottoms out when it reaches its maximum stroke and no longer provides an energy absorption function. – AC 25.562-1B
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Posted in Aircraft Systems Terms, FAA Terms | Tagged 16G, Aircraft, Airline, Engineering, FAA, Seats
