The reason for independent loading is to ensure sizing for maximum ultimate loads in each specific direction.In addition to the minimum FAA mandated ultimate loads mentioned above, there may be additional load cases required by either the completion center, the aircraft integrator, or the OEM (Original Equipment Manufacturer, example Boeing).Boeing requires higher load factors than those mandated by this regulation in some cases. Title 14 Part 25 of the Electronic Code of Federal Regulations. quick change interior items). But we know that ultimate loads are 1.5 times limit loads. 25-23, 35 FR 5673, Apr. AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES; Subpart E. Powerplant CFR ; prev | next § 120.101 Scope.
No. Also, it would most likely be unsuitable for mass transport on an economical scale.Therefore, the FAA mandates certain minimum ultimate loads or ultimate load factors that the aircraft and cabin interiors must be designed to withstand, based on past aviation history. FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION; Subchapter C. AIRCRAFT; Part 25. An additional 3.0G SIDE (LHS and RHS) + 1.5G DOWN combination load case is also required.There may be interior items that aren't required to be substantiated to ultimate loads as they are Examples are flight attendant jump seats or lower lobe crew rests. You plunge forward with your seat belt on.
FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION; Subchapter C. AIRCRAFT; Part 26. PART 25 - AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES . 14:1.0.1.3.12.5.103: SUBJGRP 103: General: 14:1.0.1.3.12.5.103.1: SECTION 25.901 25.901 Installation. Part 120. Special Federal Aviation Regulation No. With composite materials, there is no appreciable yielding before failure and therefore a positive safety margin is sufficient to comply with this part of the regulation.There you have it, if you know of any other important aspects related to Ultimate Loads and this regulation, share it, make sure you comment below and let us know...Surya Batchu is the founder of Stress Ebook LLC. § 23.2420 Reversing systems.
CFR ; prev | next. Complying with this requirement is a little subjective in nature and probably depends on the acceptance of the DER or ODA Unit Member approving the test. § 23.2410 Powerplant installation hazard assessment. But we will discuss that later.The bottom line for interior items is that almost all loose contents of the interior equipment or cabin structures are restrained using various restraint devices such as latches and hinges on doors, quarter turn retainers, the walls of the structures made from sandwich panels etc.Generally, there are no items allowed to be completely unrestrained in any direction that could fly out into the cabin and either insure the occupants or impede their safe egress after an emergency landing condition. '; Toggle navigation eCFR. § 152.403 … Electronic Code of Federal Regulations (e-CFR) Title 14. 25-91, The airplane, although it may be damaged in emergency landing conditions on land or water, must be designed as prescribed in this section to protect each occupant under those conditions. 8, 1970; Amdt. § 23.2415 Powerplant ice protection. Part 25 - Airworthiness Standards: Transport Category Airplanes. They land it on its belly and on a stretch of flat land (can be a body of water as well).
Electronic Code of Federal Regulations (e-CFR) Title 14.
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14 cfr part 25 subpart e