If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
AMT question: Approved Data
Hello.
I am studying for my O&Ps and I have a question about "approved data" and "acceptable data." I understand that the manufacturer's maintenance manual is only considered "acceptable data," and is therefore not approved for use in making major repairs or major alterations. So let's suppose I want to overhaul some big nasty Lycoming with an integral supercharger and a planetary-type prop reduction gear. Per CFR Part 43 Appendix A, this is a powerplant major repair. What is my approved data? Is the Lycoming overhaul manual a source of approved data? If so, what is the difference between this overhaul manual and a "maintenance manual" as defined in CFR Part 43 Appendix A? Second question: Suppose I crumpled some skin on the wing of my Cessna 172. Assuming that it is economically feasible to undertake a major repair to correct this damage, where would I find my approved data? A Cessna 172 Structural Repair Manual seems like the obvious choice, if there is such a publication. Again, would this not be considered a "maintenance manual?" Thanks -Mark |
#2
|
|||
|
|||
AMT question: Approved Data
"Mark" wrote in message ... Hello. I am studying for my O&Ps and I have a question about "approved data" and "acceptable data." I understand that the manufacturer's maintenance manual is only considered "acceptable data," and is therefore not approved for use in making major repairs or major alterations. So let's suppose I want to overhaul some big nasty Lycoming with an integral supercharger and a planetary-type prop reduction gear. Per CFR Part 43 Appendix A, this is a powerplant major repair. What is my approved data? Is the Lycoming overhaul manual a source of approved data? If so, what is the difference between this overhaul manual and a "maintenance manual" as defined in CFR Part 43 Appendix A? Second question: Suppose I crumpled some skin on the wing of my Cessna 172. Assuming that it is economically feasible to undertake a major repair to correct this damage, where would I find my approved data? A Cessna 172 Structural Repair Manual seems like the obvious choice, if there is such a publication. Again, would this not be considered a "maintenance manual?" Thanks -Mark Mark, It can be very confusing between acceptable data and approved data. Some of the data in the manufacturers maintenance manual is likely "approved" data, but most is "acceptable." AC43-13 is also considered "acceptable" data. On a major repair "acceptable" data is acceptable! It becomes "approved" when they accept the 337. Approved data is required for major alterations. For this purpose the data provided with the STC or on the TCDS is approved data. The difference becomes important on a "field modification." Then you write up the 337 explaining what you are going to do and how you will do it referring to what approved data you have and acceptable data where you do not have approved data. Make sure you include all sixteen points of the ICA even if you only put down N/A for most of them. Then you send it off to the FSDO before you do any of the work. They will put their stamp and signature in Block 3 of the 337 and when they do all of your writeup becomes approved. Then you perform the work exactly like you said you were going to, and have the IA do the "return to service." A major overhaul is "minor" maintenance and does not require a 337 form. Welding up a crack in a seat frame is a "major" repair and does require a 337. :-) In my FSDO replaceing any factory part is minor maintenance and just requires a logbook entry unless the part is something like a skin panel that requires rivits to attach. Then it becomes a "major" repair because of the rivits and requires a 337. Putting in any avionics that is not listed on the TCDS, which these days is virtually all avionics, requires a 337. If ever you are not sure about something, call you PMI at the local FSDO and talk it over. They will be glad to tell you what they will require from you. If you give them what they need, all should go smoothly. I has worked well for me over the years. Highflyer Highflight Aviation Services Pinckneyville Airport ( PJY ) |
#3
|
|||
|
|||
AMT question: Approved Data
On Fri, 24 Mar 2006 14:59:51 -0800, "Mark"
wrote: Second question: Suppose I crumpled some skin on the wing of my Cessna 172. Assuming that it is economically feasible to undertake a major repair to correct this damage, where would I find my approved data? A Cessna 172 Structural Repair Manual seems like the obvious choice, if there is such a publication. Again, would this not be considered a "maintenance manual?" Thanks -Mark Cessna 100 series service manual. this is for the 150, 172, 175, 180, 182 and 185 if yours is the same vintage as mine ( 1962 and prior) this has details of the repairs you mention. they are available from Univair Stealth Pilot |
#4
|
|||
|
|||
AMT question: Approved Data
"Stealth Pilot" wrote:
Cessna 100 series service manual. this is for the 150, 172, 175, 180, 182 and 185 if yours is the same vintage as mine ( 1962 and prior) this has details of the repairs you mention. they are available from Univair Thanks for the information. However, my question is hypothetical. I'm studying for the A&P exams. -Mark |
#5
|
|||
|
|||
AMT question: Approved Data
"Mark" wrote in message
So let's suppose I want to overhaul some big nasty Lycoming with an integral supercharger and a planetary-type prop reduction gear. Per CFR Part 43 Appendix A, this is a powerplant major repair. Wouldn't you need an IA to go along with the A&P to perform this operation? D. |
#6
|
|||
|
|||
AMT question: Approved Data
"Capt.Doug" wrote in message ... "Mark" wrote in message So let's suppose I want to overhaul some big nasty Lycoming with an integral supercharger and a planetary-type prop reduction gear. Per CFR Part 43 Appendix A, this is a powerplant major repair. Wouldn't you need an IA to go along with the A&P to perform this operation? No, you would need the IA for return to service. The A&P can DO the overhaul; the IA is needed for return to service. Jim |
#7
|
|||
|
|||
AMT question: Approved Data
RST Engineering wrote:
"Capt.Doug" wrote in message ... "Mark" wrote in message So let's suppose I want to overhaul some big nasty Lycoming with an integral supercharger and a planetary-type prop reduction gear. Per CFR Part 43 Appendix A, this is a powerplant major repair. Wouldn't you need an IA to go along with the A&P to perform this operation? No, you would need the IA for return to service. The A&P can DO the overhaul; the IA is needed for return to service. Jim Ackshully, you would need an appropriately rated pilot for return to service. You'd need an IA to approve the engine for return to service. And yes, the pilot is supposed to make an engine log entry. |
#8
|
|||
|
|||
AMT question: Approved Data
"Dale Scroggins" wrote:
Ackshully, you would need an appropriately rated pilot for return to service. You'd need an IA to approve the engine for return to service. And yes, the pilot is supposed to make an engine log entry. If I did the overhaul, then he also gets a beer. Or two. :-) |
#9
|
|||
|
|||
AMT question: Approved Data
Ackshully, you would need an appropriately rated pilot for return to
service. You'd need an IA to approve the engine for return to service. And yes, the pilot is supposed to make an engine log entry. I agree with you that the IA approves the engine for return to service, and the pilot actually returns it to service. But what's your reference for stating that the pilot is supposed to make a logbook entry? I'm not aware of any such requirement in Part 43. |
#10
|
|||
|
|||
AMT question: Approved Data
Putting in any avionics that is not listed on the TCDS, which these days is
virtually all avionics, requires a 337. This is certainly true in practice, but adding avionics doesn't seem to me to fit any of the definitions of major alterations given in Part 43 Appendix A. I once asked an FAA avionics inspector about this, and he just said something about it being critical to safety and thus it makes sense to require a 337. Does anyone know of a case in which someone has tried to challenge the FAA's interpretation of this? |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Air Force One Had to Intercept Some Inadvertent Flyers / How? | Rick Umali | Piloting | 29 | February 15th 06 04:40 AM |
More IFR with VFR GPS questions | Chris Quaintance | Instrument Flight Rules | 58 | November 30th 05 08:39 PM |
Boeing Boondoggle | Larry Dighera | Military Aviation | 77 | September 15th 04 02:39 AM |
Pirep: Garmin GPSMAP 296 versus 295. (very long) | Jon Woellhaf | Piloting | 12 | September 4th 04 11:55 PM |
Ice meteors, climate, sceptics | Brian Sandle | General Aviation | 43 | February 24th 04 12:27 AM |