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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2
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1answer
35 views

What do the different dates in a TCDS mean?

I have been trying to interpret Type Certificate Data Sheets and am coming up short on how to understand some of the dates listed. For example, here is the TCDS for the new Citation Longitude: How is ...
2
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1answer
183 views

Can an unserviceable component be fitted on a serviceable aircraft for a maintenance check?

I was doing some reading on aviation regulations and I wanted to understand from an expert whether the following situation is allowable or not. I have reviewed EASA continuing-airworthiness guidelines ...
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0answers
110 views

For the recertification flight(s) of the 737Max, will the FAA want to see a live runaway stabilizer?

With Boeing ready to start the testing Monday, will the FAA want to see a simulated runaway trim failure in flight?
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1answer
67 views

Does an heavy propeller aircraft (CS-25) have the Blu Line (Vyse) displayed on ASI?

Does a propeller aircraft that is categorized as CS-25 (EASA Regulation) have the Blue Line (Vyse) mandatory displyed on ASI? I know that would be the case for lighter aircraft (Less than 19000 lbs /...
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2answers
149 views

Which 2-seat 4th generation fighter/engine/configuration (de-militarized) would the best supersonic long-range civilian private transport?

Seeing recently -with some surprise- that former military jets of fairly recent vintage can be bought e.g. here and operated by (skilled+licensed²+rich³) private individuals after all classified/...
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3answers
150 views

What happens if an aircraft goes above maximum altitude? [duplicate]

We all know what happens when a plane goes overspeed... but what happens when a plane goes above their max. altitude? And why are planes certified maximum altitudes anyway? Is it because there won't ...
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2answers
105 views

Did Solar Impulse flight in commercial airspace and have kind of type 23 certification? [closed]

I read that the amazing Solar Impulse back in 2015 had circulated around the globe for 500 hours. It flew with speed 70 km/h and altitude of cruising 28000 ft. My questions are below Did it fly in ...
3
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1answer
255 views

Would “Mad” Mike Hughes' steam-powered rocket have been certified airworthy by the FAA?

Daredevil 'Mad' Mike Hughes died after his homemade rocket crashed on 22 February 2020. The cause appears to be the premature deployment of the parachute used for a safe return. He was hoping to reach ...
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0answers
59 views

What is the current regulatory progress regarding autonomous aircraft carrying passengers?

Are there any lobbying groups working towards this? Has there been any word whatsoever from the FAA on this topic yet?
2
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1answer
141 views

Are the PW1100G and PW1400G engine series not certified by the FAA?

I was digging around the FAA type certificate data sheet (TCDS) database and I could not find the entries for the PW1100G and PW1400G engines series. I then went to the EASA TCDS database and both of ...
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1answer
107 views

Can a part 103 ultralight weigh 400kg fully loaded? [duplicate]

I am designing an electric VTOL personal part 103 ultralight. My question is: I have 114kg for the ultralight, 100kg for the pilot and 30kg for the baggage. About 260kg is enough to be take off ...
3
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1answer
147 views

In which countries can I fly an FAA compliant Part 103 ultralight? [closed]

İf I have a legal part 103 ultralight as defined by the FAA, in which countries may I fly this ultralight in the world in addition to the USA?
2
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1answer
129 views

How can I certify an ultralight design as complying with part 103?

Can you help me about which procedure do I need to follow in order to have a certificate that my design is part 103 ultralight. And as a information how long would it take to get the certificate and ...
4
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1answer
167 views

How do I get an airworthiness certificate for a prototype aircraft?

If I were to build a plane of my own design as a prototype for possible sales, what steps would I need to take to get an airworthiness certificate from the FAA? If it's truly a certified aircraft and ...
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0answers
78 views

Can friction joints be certified?

I remember being told that friction cannot be considered when designing joints as the friction coefficient can change. This could happen for instance due to water being trapped inbetween components. ...
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2answers
295 views

Is the Boeing 777X being certified as a derivative of the 777 Classic?

Given the corner cutting Boeing did with the Max certification, is the FAA allowing the 777X to be certified as a derivative (easier) of the 777 Classic or requiring a new Type Certificate? (harder) ...
4
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1answer
137 views

Is a supertransporter considered a different aircraft type than the one it is derived from?

By supertransporter I mean the SuperGuppy (derived from the Stratocruiser), the B747LCF dreamlifter, the A300-600ST, the airbus beluga XL, and any other aircraft whose role is to transport so large ...
21
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1answer
2k views

What is the difference between “Type Certificate” and “Certificate of Airworthiness” for an aircraft?

I want to know what exactly is "Type Certificate" and "Certificate of Airworthiness" means for an aircraft.
1
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1answer
69 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 ...
5
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2answers
261 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 ...
2
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2answers
286 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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2answers
66 views

Engine Oil Consumption limits part of certification?

Does anyone knows if Engine Oil Consumption limits are part of the engine certification requirements?
1
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1answer
103 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 ...
2
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0answers
74 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
94 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 ...
6
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1answer
432 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 ...
3
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2answers
475 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?
0
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1answer
124 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
125 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 ...
3
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1answer
346 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
119 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 ...
0
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1answer
281 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
946 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 ...
0
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1answer
133 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, ...
13
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3answers
1k views

What is the the origin of 12,500 pounds in the FAA's definition of large aircraft?

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-...
4
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2answers
278 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 ...
3
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1answer
115 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 ...
13
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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
163 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
269 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 ...
18
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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 ...
2
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1answer
316 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 ...
1
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1answer
107 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
126 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
192 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 ...
8
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2answers
396 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 ...
4
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0answers
105 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 ...
1
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1answer
617 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?
6
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1answer
323 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 (...