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Questions tagged [aircraft-certification]

Use this tag for questions regarding the certification of aircraft. If your question is regarding regulations or a specific country, please add the relevant tag and state so in your question.

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Can a surrendered type certificate be reacquired by the manufacturer or by another entity, or is it considered to be permanently lost?

On occasion, the holder of an aircraft type certificate or supplemental type certificate chooses to surrender it to its local civil aviation authority (for instance, the FAA or EASA), which has the ...
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1answer
126 views

Can the real time operating system used in aviation equipment be certified by itself?

Can the real time operating system used in aviation equipment be certified by itself, or must it be a part of some software certification effort? I'm asking for getting a certificate of 178C. I don't ...
2
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1answer
76 views

Why don’t aircraft undergo contaminated-runway landing-distance and rejected-takeoff certification testing?

All aircraft have to undergo testing to determine how much runway they need in order to safely land and come to a stop, or to safely reject a takeoff. They do not, however, have to undergo this ...
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1answer
40 views

Why are landing-distance and rejected-takeoff certification tests performed without thrust reversers?

All aircraft have to undergo testing to determine how much runway they need in order to land and come to a stop without running out of runway, and how much runway they need in order to be able to ...
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2answers
61 views

Where is Transport Category aircraft defined in CFR 14?

Commuter Category is defined rigorously, https://www.law.cornell.edu/cfr/text/14/23.3 But I was unable to find an equivalent definition for Transport Category in the regulations (not Wikipedia or ...
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1answer
87 views

Where does it say that type certificates are required?

I am doing research and looking for a regulation (from FAA, Transport Canada, ICAO or anywhere else) that explicitly states that a type certificate is required for aeronautical products (aircraft, ...
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2answers
270 views

FAA Large Aircraft: Origin of 12,500 pounds

According to the FAA's definitions in 14 CFR 1.1, a Large aircraft is an "aircraft of more than 12,500 pounds, maximum certificated takeoff weight." I have heard this threshold was set based on the DC-...
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2answers
132 views

How hard is it to certify a kit aircraft if it is based on a production design like a Cessna 180?

I was looking at older planes, specifically the Cessna 180. It is discontinued, but people love them, so they fetch premiums. I saw St. Just Aviation has a kit Cessna 180. There are only 25ish planes ...
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1answer
83 views

How are STCs granted for similar aircraft? Archer vs Arrow

I'm specifically interested in the Garmin GFC 500 autopilot certification, but this question can apply to any STC question. The GFC 500 is certified for a ton of Archer (PA-28) variants, but no ...
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5answers
6k views

Why are wings load tested upside down?

Why are wings load tested by putting weights on the underside of the wing (placed upside down)? A wing is being pulled into the air from its upper surface in flight, so shouldn't it be load tested in ...
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2answers
89 views

Can an aircraft get certified for different runway lengths through the FAA based on the amount of payload it is carrying during said takeoff?

When certifying a new aircraft through the FAA, will they certify the AC for just one takeoff distance based on the max payload capacity, or can you get the AC certified for multiple runway lengths ...
7
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1answer
209 views

How did the service ceiling certification change in the 70s?

According to this video (at 4:30-4:45) the "later" Cessna T337 and P337 were limited to 20,000 feet whereas the older models "had no such limitation - a quirk in changes in the certification standards ...
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2answers
3k views

What are the reasons for an installed engine to produce less thrust than an uninstalled engine?

Is this only due to the various flight conditions encoutered during operation, such as side winds and turbulence, or are there other reasons? Also, is interference between fuselage and power plant ...
2
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1answer
205 views

Why is the gradient line for climb in a one-engine-inoperative condition during take off under CS-25 described in percentage?

Appeciate an explanation in terms of definition of climb in terms of gradient & an explanation of the reasons behind each percentage condition for the different air craft types: twin engine, three ...
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0answers
71 views

How do changes in certification requirements affect previous type certificates?

How does the 2016 part 23 airworthiness requirements rewrite affect older type certificates? If some aspect of an aircraft does not meet the new requirement do all of those aircraft have to be ...
4
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1answer
104 views

Are there certification requirements on Dual Inputs?

Is anyone of you aware of (certification) requirements or similar for dual input, and the priority management of dual controls? I only know the Airbus philosophy of summing both inputs and limit them ...
3
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1answer
115 views

Is data approval by DER/DAR still required under new FAR part 23?

New FAR Part 23 rules have been enacted on August 30th 2017, simplifying certification for small airplanes. Will the FAA still require: Designated Engineering Representative (DER) approval for each ...
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2answers
337 views

Does every device/software, developed for use in the cockpit, need to be certified?

Every avionic, developed for use in the cockpit has to complete a long and expensive certification process. Is this only applying for avionics, installed fixed into the aircraft or also for apps like ...
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0answers
86 views

What is the FAA Approval Basis for an FMS upgrade on a Part 25 aircraft?

Does anyone know of a recent approval for an upgrade from a Universal UNS-xx FMS to a Universal UNS-1Ew FMS on a FAA registered aircraft, other than a TC, TC update or an STC? I am looking for the ...
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1answer
497 views

Has the F-35 Lightning II overheating problem been resolved?

This is one of the sources explaining the F-35 overheating problem. Has this been resolved? Are the constant problems, that are being reported about this type normal for an aircraft like this?
5
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1answer
273 views

Which FAA regulations apply to the Stratolaunch?

(Image source) Which FAA regulations apply to the Stratolaunch being built by Vulcan Aerospace and Scaled Composites? Do they follow the same regulations for the type cert, production and CofA (...
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2answers
1k views

Are there general accuracy requirements for aircraft power supplies?

Let's say I have some LRU device that requires some DC voltage to be powered on. Are there any general requirements in aviation/aerospace that say how accurate that supply voltage must be in order to ...
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3answers
7k views

Would the Gee Bee be allowed to fly today, with so little forward visibility?

When looking at the Gee Bee: Source I wonder what the pilot is actually able to see, when rolling on the runway, when flying level, or trying to locate a possible emergency landing place. It seems ...
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1answer
2k views

What's required for a plane certified to fly to Antarctica?

What special features besides the obvious long range does a plane have to have to fly to and land in Antarctica? I know not just any plane can make the trip, but I couldn't find many relevant ...
5
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1answer
440 views

Is there a roadmap to satellite / inertial only based navigation?

GNSS is the most accurate mean of navigation available on the flight deck but it relies on satellite being available and under control. Inertial systems are autonomous, but far less accurate. ...
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2answers
1k views

How do I find the serial number and other important information of an old airplane I have?

My dad has passed away and I have his plane. I can't find the paper work but I want to get a replacement title from FAA. Their site says that I need manufacturer name, model designation, N-number, and ...
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4answers
9k views

What is the longest range single-pilot certified (FAA and/or EASA) business jet?

I suspect the single-pilot business jet with the longest range is the SyberJet SJ30x: NBAA IFR Range with 100 nm Alternate M 0.76 (1 pilot + 2 passengers; passenger/pilot at 90 kg each) 2,575 nmi (...
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3answers
6k views

What is the procedure to turn a certified aircraft into an experimental aircraft?

Last year at EAA Airventure I saw a helicopter (can't remember the model, but it was something like a Eurocopter EC135 or similar with a full glass cockpit). It was US registered (N-Number tail) but ...
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2answers
250 views

How can one demonstrate/assure safety for LRU's, CBAs, SoC's and other integrated modules?

Does anybody have experience with getting complex modules that were designed by others for common use, approved for incorporation in an airborne system that is at DAL A, B, or C and thus requires FAA ...
6
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1answer
711 views

What are the regulations and testing that determine whether a “Spins Prohibited” placard is required in an aircraft?

Clearly some flight testing and certification process is used to establish whether or not a type of production GA aircraft is or is not placarded "SPINS PROHIBITED". What type of testing and what ...
6
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1answer
867 views

Does load factor limit actually change with aircraft weight?

Does load factor limit in reality change with aircraft weight? Is it fixed to make certification and operation more simple? Now unloaded aircraft has lower Va speed. This makes sense to keep constant ...
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1answer
674 views

Are all US airline aircraft certified into known ice?

Are all US airline aircraft certified for flying into known icing (FIKI) conditions? I assume all the large (100+ PAX) aircraft come FIKI certified from the design stage? What's the largest ...
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2answers
243 views

Why don't DO guidelines have examples?

As per DO-178 C section 6.2 Overview of Software Verification Activity b. When it is not possible to verify specific software requirements by exercising the software on a realistic test environment,...
2
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1answer
277 views

Does RTCA/DO-254 apply to power electronics?

DO-254 provides guidance for the development of airborne electronic hardware and it is recognized by the FAA in 2005 via AC 20-152 as a means of compliance for the design of complex electronic ...
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1answer
135 views

Which organizations and individuals are invited for a review before the first flight of a new aircraft? [closed]

The first flight of a new aircraft is a major aviation milestone for the company and the industry. What departments or organizations (within a parent organization), and what individuals, are invited ...
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2answers
465 views

What would prohibit a T-38 Talon from being certified in the Acrobatic category?

The definition of the acrobatic category in FAR 23.3 reads as follows: (c) The acrobatic category is limited to airplanes that have a seating configuration, excluding pilot seats, of nine or less, ...
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1answer
30k views

What are the differences between Normal and Utiltiy Categories [duplicate]

In the operating handbooks for GA aircraft, there are often weight and balance limitations listed for both Normal and Utiltity category operation. If I restrict the loading to the Utility category ...
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2answers
193 views

Can countries introduce new aviation policies unilaterally?

Let's say some country intends to introduce a new aviation policy that conflicts with ICAO regulations, like only aircraft certified and approved by our government can fly in our airspace. Can they do ...
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1answer
650 views

What's a Class F cargo compartment?

Apparently, the Aviation Traders folks worked with EASA to define a special type of cargo compartment, known as a class F, during their work on Iron Maiden's touring airplane. Just what is a Class F ...
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1answer
289 views

What are the requirements for an aircraft to be allowed to perform fast taxi runs?

In the UK, are any certifications or particular checks legally required for a retired aircraft to perform fast taxi runs (only)? Would it still be possible to do them if the main wing spars have been ...
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2answers
264 views

Is the US certification process for airliners shorter or longer than in other countries?

I was researching information regarding the competitiveness of different government certification organizations (FAA, EASA, etc) and the processes (Amount of time, costs, etc) to get their nations ...
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2answers
240 views

Are aircraft separately certified for CAT III ops for +2500 feet elevation?

Is it mandatory have separate certification for aircraft operating CAT III Operations on airports having elevation more than 2500 feet? If so do that aircraft are to carry any additional equipment? ...
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1answer
2k views

Why does ETOPS not apply to older 4 engine aircraft?

This is a follow-up to my previous question: What is ETOPS and how does it work? There is a related question here, but it does not specifically answer this new question. Facts: Since February 2015, ...
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5answers
41k views

What is ETOPS and how does it work?

According to this press release by Boeing earlier this year, the 747-8 has received its ETOPS 330 rating. This is required by all 4-engined planes made after February 2015 to fly beyond 180 minutes ...
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2answers
16k views

What is the purpose of flutter testing?

All I am aware of is that flutter testing involves the aircraft shaking violently. How is a flutter test performed and what is its purpose?
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1answer
10k views

What are the regulatory categories of aircraft defined by the FAA?

What are the different aircraft regulatory categories aircraft defined by the FAA? Are there any exceptions?
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2answers
1k views

Are there any IFR-certificated and equipped aerobatic aircraft?

Are there any acrobatic-category aircraft that are also type-certificated/rated and equipped for flight under the instrument flight rules? What limitations would be placed on such an airplane when ...
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1answer
2k views

How would you get certified for the AgustaWestland AW609 as a rotorcraft pilot or without any previous certification?

It seems like AgustaWestland might finally get certification for the AW609 in the next couple of years. Let's say I buy one to transport people to the offshore oil platforms that I hypothetically own....
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3answers
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Can the Airbus A380 safely fly with two engines out on the same wing?

I know twin-engine jets can safely take off and fly with one engine out (i.e. all thrust only on one side). Of course quad-engine jets are also able to fly safely in case one engine is out. But is ...
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2answers
3k views

Can a Cessna 162 Skycatcher be flown IFR in IMC?

This question is similar to these questions: Are there any LSA aircraft that can be flown IFR in IMC? What are the FAA requirements for an aircraft to be IFR certified? Unfortunately I couldn't find ...