Questions tagged [modifications]
Questions relating to aircraft modifications
24 questions
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What does the suffix "A“ mean on specific PW1100G(A) engines?
Some time ago I tried to find out what the difference between a PW1100G and a PW1100GA exactly is. I am asking this question here because there seems to be no information online that could be useful ...
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Where can I get blueprints of older aircraft?
I'm currently working on a project for an internship that involves modifying a 1959 Cessna 150. I won't actually be modifying a Cessna 150, but it's more of a "if you did modify it here's how you ...
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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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Does 'Fat Albert' Have any significant modifications?
The Blue Angels use a C-130 known as 'Fat Albert' in some of their shows. Other than the paint job and smoke, are there any significant differences between 'Fat Albert' and a standard C-130?
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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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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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How would a fighter be changed from having static stability to having relaxed stability?
A good portion of aircraft, especially those designed before the 1970's, possessed static stability. However, modern fighters (and some airliners) have been build with relaxed static stability.
This ...
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What is the upper deck on converted freighter long-hump 747s used for?
All 747s1 have an upper deck directly behind the elevated cockpit, a legacy of the 747’s genesis as a design for a strategic-airlifter competition (the upper deck and elevated cockpit were partly to ...
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What modifications/upgrades were done to US MD-80 fleet?
I have often heard stories about how most of the MD-80 fleet that are being retired in the US were modified and upgraded.
What were the modifications or upgrades done?
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Why were most of the first-generation-Learjet wing mods never approved for the Learjet 23?
First-generation (straight-wing1) Learjets (the 23, 24, 25, 35, and 36) are, rather infamously, beasts to fly, due in part to their hideous stall behaviour;2 due to their flow-separation-prone laminar-...
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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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Why was the 307’s pressurisation system removed when it was modified into the C-75, despite the fuel-burn advantage of higher-altitude flight?
The Boeing 307, an airliner derivative of the B-17 heavy bomber, was the first pressurised airliner to enter series production and go into service (hence its bulbous, altogether un-B-17-like fuselage, ...
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How to modify an amateur kit build with wing hard points
I plan on modifying an amateur-built all-metal kit plane so it has a hard point under each wing where various external loads (cameras, probes, etc) can be fitted to (university research). The location ...
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What about the DC-9's wing makes wingletting it so difficult?
A common way of making older airliners more efficient without increasing their wingspan is to add winglets, either as a retrofit for existing aircraft or as a new, wingletted derivative of a ...
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How can I calculate the speed gain from using multiple STC modifications together?
Looking at a parts manufacturer website, they list various STC'd modifications for Mooneys with estimated (cruise?) speed gains for each.
However, I've heard that those gains are not additive. For ...
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