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Undo and STC
Danny Deger wrote:
If you have an aircraft that has had an STC done to it, can you remove a piece of equipment required by the STC and take the airplane back to the pre STC condition? Danny Deger If you mean remove everything involved in the STC, sure, why not? If you mean one part of an STC, the airplane would then neither conform to the STC nor the orignal certificate, so no, not without something to justify it. -- Jim Pennino Remove .spam.sux to reply. |
#2
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Undo and STC
If you have an aircraft that has had an STC done to it, can you remove a
piece of equipment required by the STC and take the airplane back to the pre STC condition? Danny Deger |
#3
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Undo and STC
In article ,
"Danny Deger" wrote: If you have an aircraft that has had an STC done to it, can you remove a piece of equipment required by the STC and take the airplane back to the pre STC condition? I hope so... I don't have the autogas STC anymore (became invalid when convert the engine to 160hp). -- Bob Noel (gave up lookingn for a particular sig the lawyer will) |
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Undo and STC
On Mar 17, 1:38 pm, "Danny Deger" wrote:
If you have an aircraft that has had an STC done to it, can you remove a piece of equipment required by the STC and take the airplane back to the pre STC condition? Danny Deger You have to remove all of the equipment required by the STC and file another Form 337 documenting the removal of said equipment and STC. STC stands for supplemental type certificate and it modifies the original type design of the aircraft. Unmodifying the aircraft is another change to the type certificate. Removing only part of the STC does not return the aircraft to the original certification. You cannot remove an STC with a simple log book entry. Slightly off topic but I see lots of aircraft that have had fairly simple STCs installed like Zeftronics ACUs or Brackett air filters where the STC and Form 337 was never filed by the installing agency. This means that the aircraft is technically illegal and has been ever since the STC was not filed. John Dupre' |
#5
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Undo and STC
On 19 Mar 2007 14:33:18 -0700, "John" wrote:
On Mar 17, 1:38 pm, "Danny Deger" wrote: If you have an aircraft that has had an STC done to it, can you remove a piece of equipment required by the STC and take the airplane back to the pre STC condition? Danny Deger You have to remove all of the equipment required by the STC and file another Form 337 documenting the removal of said equipment and STC. STC stands for supplemental type certificate and it modifies the original type design of the aircraft. Unmodifying the aircraft is another change to the type certificate. Removing only part of the STC does not return the aircraft to the original certification. You cannot remove an STC with a simple log book entry. Slightly off topic but I see lots of aircraft that have had fairly simple STCs installed like Zeftronics ACUs or Brackett air filters where the STC and Form 337 was never filed by the installing agency. This means that the aircraft is technically illegal and has been ever since the STC was not filed. John Dupre' You do not need to file a Form 337 in order to completely remove an STC and return an aircraft or engine to it's original type design. It is NOT another Major Alteration to return a product to it's original unaltered TC condition, and that's what a 337 is only for (Major repair or Major Alteration). A simple logbook entry using the approved data of the TC is the only required entry. Bill A&P IA |
#6
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Undo and STC
While probably not relevant here, things are a little bit different when you
are dealing with aircraft that are to be flown by Sport Pilots. Consider an aircraft that, as originally manufactured, would meet the Light Sport Aircraft criteria. But it was STC'd in such a manner as to no longer meet those criteria. You cannot remove the STC's to restore the aircraft to its manufactured state and fly it as a Light Sport Aircraft. The Light Sport regulations required that the aircraft must have met the criteria continuously from the time of manufacture... "Bill Zaleski" wrote in message ... On 19 Mar 2007 14:33:18 -0700, "John" wrote: On Mar 17, 1:38 pm, "Danny Deger" wrote: If you have an aircraft that has had an STC done to it, can you remove a piece of equipment required by the STC and take the airplane back to the pre STC condition? Danny Deger You have to remove all of the equipment required by the STC and file another Form 337 documenting the removal of said equipment and STC. STC stands for supplemental type certificate and it modifies the original type design of the aircraft. Unmodifying the aircraft is another change to the type certificate. Removing only part of the STC does not return the aircraft to the original certification. You cannot remove an STC with a simple log book entry. Slightly off topic but I see lots of aircraft that have had fairly simple STCs installed like Zeftronics ACUs or Brackett air filters where the STC and Form 337 was never filed by the installing agency. This means that the aircraft is technically illegal and has been ever since the STC was not filed. John Dupre' You do not need to file a Form 337 in order to completely remove an STC and return an aircraft or engine to it's original type design. It is NOT another Major Alteration to return a product to it's original unaltered TC condition, and that's what a 337 is only for (Major repair or Major Alteration). A simple logbook entry using the approved data of the TC is the only required entry. Bill A&P IA |
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Undo and STC
On Mar 19, 4:53 pm, Bill Zaleski wrote:
On 19 Mar 2007 14:33:18 -0700, "John" wrote: On Mar 17, 1:38 pm, "Danny Deger" wrote: If you have an aircraft that has had an STC done to it, can you remove a piece of equipment required by the STC and take the airplane back to the pre STC condition? Danny Deger You have to remove all of the equipment required by the STC and file another Form 337 documenting the removal of said equipment and STC. STC stands for supplemental type certificate and it modifies the original type design of the aircraft. Unmodifying the aircraft is another change to the type certificate. Removing only part of the STC does not return the aircraft to the original certification. You cannot remove an STC with a simple log book entry. Slightly off topic but I see lots of aircraft that have had fairly simple STCs installed like Zeftronics ACUs or Brackett air filters where the STC and Form 337 was never filed by the installing agency. This means that the aircraft is technically illegal and has been ever since the STC was not filed. John Dupre' You do not need to file a Form 337 in order to completely remove an STC and return an aircraft or engine to it's original type design. It is NOT another Major Alteration to return a product to it's original unaltered TC condition, and that's what a 337 is only for (Major repair or Major Alteration). A simple logbook entry using the approved data of the TC is the only required entry. Bill A&P IA- Hide quoted text - - Show quoted text - I used to thinkso and it is probably another case of different FSDOs interpreting the regs in their own way but at our FSDO (EA 61) the word is that since you altered they type design with an 337 you are altering it again when the STC is removed and that requires another 337. They told us that without the 337 filed the FAA has no way of knowing the proper status of an aircraft's certification. John also an A&P IA |
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