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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1answer
55 views

Where can I find an aircraft's year of certification (airworthiness certificate)?

Is there a way to pull a list of all certified aircraft (of course only valid certifications) including the year of certification please? For example I am actually trying to identify when CRJ200 PF ...
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2answers
171 views

Why don't multiengine aircraft have to demonstrate spin recoverability?

(Building off this earlier question about spin-testing airliners.) For normal-category aircraft1 in the U.S. (at least), only single-engine (or, in the case of some gliders, no-engine) airplanes need ...
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2answers
95 views

At what point does an aircraft need a new type certificate vs a STC?

First post. Yes, I did search but this specific question has not been asked before. This answer is close, however: How does a mechanic determine if a repair or alteration requires a Supplemental Type ...
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6answers
3k views

What is the maximal acceptable delay between pilot's input and flight control surface actuation?

While I was watching a cockpit video of an A330 landing in which the pilot was frenetically moving its sidestick, I wander what was the reaction time of this flight by wire system. Indeed, the time ...
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61 views

Engine Oil Consumption limits part of certification?

Does anyone knows if Engine Oil Consumption limits are part of the engine certification requirements?
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1answer
71 views

Is it possible to obtain an STC for single-pilot ops in a jet certified for two pilots?

I have been doing research on whether or not one could realistically obtain an STC for a super-midsize jet certified for two pilots and legally fly it single-pilot. For reference, my chosen aircraft ...
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0answers
65 views

Definition of Critical Part in type certification process

first time here :) I'm part of the team at Flytrex (flytrex.com) and we're working with the Aircraft Certification Office to certify one of the first UAS systems (drones) under new initiative to ...
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1answer
71 views

How Military to Civil Aircraft Transition is made by National Authorities?

As we know military aircrafts are not regulated by civil aviation authority organisations,namely FAA, CAA and etc. Is there any possible way to transform a military aircraft( like helicopters) to ...
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1answer
335 views

Is a FAA certified plane allowed to fly everywhere in the world?

Following the debate about FAA and Boeing certification practices, I was wondering whether Europe could potentially require the Boeing 737 Max to be certified by a European agency. Is a FAA ...
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2answers
461 views

Will the Boeing 737 MAX 8's software update require recertification of the aircraft?

Will the upcoming software update for the 737 MAX require the plane to go through a new certification like a new plane?
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0answers
69 views

DAL-A Requirements for Twin-Engine with FADEC

When operating Twin Engine helicopter with FADEC controls, is is necessary to certify at DAL-A? If so, why? Is it related to the FADEC certification or is this required for an aircraft potentially ...
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1answer
78 views

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
262 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 ...
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1answer
107 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
191 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
588 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
118 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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788 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
198 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
110 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
7k 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 ...
3
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2answers
118 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 ...
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1answer
244 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
4k 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 ...
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1answer
277 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
77 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 ...
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1answer
118 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 ...
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1answer
175 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
381 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
98 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
562 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?
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1answer
290 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
8k 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 ...
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1answer
460 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
2k 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
10k 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
10k 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
311 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
995 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
1k 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 ...
6
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1answer
733 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 ...
6
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2answers
271 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,...
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1answer
346 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
136 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
629 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
42k 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
198 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
772 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 ...