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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Why are there separate certification rules for aircraft and engines?
I have a question about certification rules for large civil aircraft. I know that these are certified according to (for example) EASA CS25. Additionally, there are separate certification rules for ...
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Who issues the Type Certificate in the UK?
Who issues a type certificate in the UK, I think in the US it is the FAA?
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Can people perform major modifications to an aircraft without an A/P license, as long as their company is certified per part 145?
If a company is part 145 certified wanted to do a major modification, can they do so without having A/Ps? Or does an A/P need to be present to verify/sign off? or no A/P's need to be present?
At that ...
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FAA requirement for recording aircraft time
I am familiar with aircraft which use a Hobbs meter for timekeeping using an oil pressure switch. I am also familiar with aircraft with a recording tachometer.
Less familiar are aircraft which use ...
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Are there examples of STCs which update airframe airspeed limitations, and in particular reduce Vne?
It might sound like a silly question, but there's a practical side to reducing Vne. The FAA has established that while powered LSA must respect a maximum level speed, Vh, of 120kts, for glider LSA it'...
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Are there exceptions to the expiration of an aircraft registration?
I’m currently a working CFI, and encountered an interesting scenario with one of my students recently. While discussing aircraft registration (specifically expiration,) I pulled out the registration ...
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What would generally be required to get an STC for swapping wing sections on a glider?
There are some neat gliders out there like the Pipistrel Sinus where the wing can be shortened/lengthened considerably by swapping out the outer wing panels.
If I wanted to do something similar and ...
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New airplane certification required for airplanes operated by non-American airlines?
I read the news today that Chinese made C919 is certified by its government. Does FAA need to certify this aircraft before it can land in the US even thought operated by a Chinese airline ( or any ...
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Looking for published version of a successful aircraft certification effort
I'm assuming-- and please correct me if I'm wrong-- that at the end of the certification process, the FAA receives a thick binder of materials. Is there an online link to an example of said binder?
...
- 4,722
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Can VANS RV-12 with Rotax 912 ULS be used/equiped in IFR? [duplicate]
May an instrument rated pilot fly a VANS RV-12 with a Rotax 912 ULS with the following equipment in VMC, under instrument flight rules for IFR training?
Dynon 10" HDX Touch Screen Primary ...
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Why is FAA Aircraft Certification Service department named as AIR?
The acronym AIR doesn't match with the functional name "Aircraft Certification Service"
"AIR (the Aircraft Certification Service) is the department within the FAA that develops and ...
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Is the use of 1/8 NPT ports on pitot/static instruments derived from an FAA standard?
On almost every pitot-static instrument used in general aviation aircraft, a 1/8 female NPT port is provided to connect the instrument to the pitot-static system. I was told that is is a requirement ...
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How is it possible that the design criteria for turbulence intensity has nearly doubled, but the manoeuvring load factor is the same?
https://www.law.cornell.edu/cfr/text/14/25.341
Here it says the turbulence intensity used for certification is 90 feet per second. Before, it was 50 feet per second, that section was added in 1981. So ...
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Does a converted aircraft require recertification? Does it break manufacturer rights?
Here is a very interesting video shows how an Airbus A330 is converted from passenger plane to a cargo plane. There are lots of changes or modifications were made to the airplane to fit the new ...
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How is the voting mechanism and FDI algorithm applied in transport aircraft?
How is the voting mechanism applied in modern transport airplanes for airdata/inertial reference sensors fault detection and isolation (FDI)?
Are there any other FDI methods approved by the regulators ...
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Continuing Airworthiness Requirements During Major Modification
I am involved in a program where the aircraft (B737) will undergo a major modification taking approximately 2 years which will ultimately result in a new type certificate being issued under a new ...
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Can a different company manufacture an FAA approved airframe or engine?
If a certain engine architecture or airframe design was granted FAA certification and then
licensed to, manufactured and then sold by another company, would it still be certified?
If not, would this ...
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In big transport jets, what is the difference between manoeuvring loads and gust loads?
In the design certifications for big transport jets, there are two factors that must be met in order for a new aircraft to be certified; manoeuvring loads, and gust loads. Why are these two separate ...
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How many thousands of flight hours does it take to certify a jetliner?
How much time in flight hours does it take for a civilian aircraft (the Airbus A350-1000 for example) to get its certification from say either FAA or EASA?
To make the question more practical, I used ...
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What is the certification process for a new propeller blade design?
I am wondering whether a propeller blade design (say from Hatzell) is submitted to a specific agency for testing and approval, and if these designs are then registered. Looking through Hatzell's ...
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FAA Aircraft Registration Form AC 8050-3 doesn't exist
I am preparing to certify a self-built aircraft as flightworthy and legal to fly, and was reading the required documents listed on FAA's Amateur-Built Aircraft Airworthiness Certification page when I ...
- 1,137
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Would fitting a T-tail on the 737 Max make MCAS unnecessary?
This is pretty far out, so I just pose it as a question for notion or ideas, rather than conclusive answers.
Considering the differences in flight characteristics between the Boeing 737 Max-8 and ...
user55607
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What makes a jet single pilot certified?
Why are some small-ish jets (Embraer Phenom 300, Pilatus PC-24 for example) single-pilot certified? The pilot still has to fly+navigate+communicate. Why would a small jet be more manageable than a ...
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Since when did European regulations require the ability to suppress alerts?
Thanks to @Gerry's comment on a recent answer of mine, the 2011 ruling on the FAA's amended 14 CFR § 25.1322 mentions:
Adopting this rule also harmonizes flightcrew alerting standards between the FAA ...
user14897
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Is there a minimum weight requirement for an commercial aircraft?
For an aircraft to be approved for commercial usage (like Boeing 747s or Airbus 320s), is there any minimum weight requirements, just the aircraft (without passengers and crew).
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Does the Cessna 208B still require a part 23 waiver to operate with 14 seats?
The selected answer to this question refers to the applicability of part 23 to aircraft of nine passengers or less. Other countries certified the 208B with as many as fourteen passenger seats, using a ...
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Are return springs on a carburetor throttle mandatory or not?
In many GA aeroplanes throttle control is connected mechanically to the throttle of carburetor via a cable. I read in some AFMs that in case of a cable failure, return springs will open the throttle ...
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Are aircraft certified for inflight thrust reversal required to demonstrate controllability in an asymmetric-reverse-thrust scenario?
For most jetliners, the inflight use of reverse thrust is prohibited (and often physically impossible), due to the potential for loss of control in the event of an inflight reverser deployment (a ...
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Does transport-type certification account for engine separation and its possible effect on hydraulic lines?
This question is inspired by the United Airlines Flight 328 where the No. 2 engine is damaged.
Some multi-engine aircraft are design to withstand the detachment of an engine while some are not. Boeing ...
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People say that modern airliners are more resilient to turbulence, but I see that a 707 and a 787 still have the same G-rating. Why is this?
The 707 was introduced in the late 50's, the 787 in 2009.
Back when Air France 447 had recently gone missing, many were speculating that the aircraft had broken up in the turbulence associated with ...
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What license will one need to fly the Aeromobil flying car in 2022?
Aeromobil are launching their "flying car" in 2022, after successful test flights.
What kind of license / certification will be required to own / fly one of these? Presumably something less ...
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Are there any autoland capable aircraft without autothrottles?
While reading the question Why couldn't the CRJ100/200 be equipped with triple-string autoland? I thought the CRJ cannot have autoland because it is not equipped with autothrottles. Somehow I ...
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Factors to be considered when re-engining aircraft
What parts of the aircraft need to be adjusted / refitted / added when fitting new (different type) of engines?
Also what what kind of re-certification regarding airworthiness etc. will be necessary?
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Why will the 777X be tested for crosswind handling with wingtips raised?
Wikipedia says:
As existing regulations do not cover the folding wingtips, the FAA issued special conditions, including proving their load-carrying limits, demonstrating their handling qualities in a ...
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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 ...
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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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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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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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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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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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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 ...
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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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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?
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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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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 ...
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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?
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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 ...
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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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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)
...
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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 ...
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