by reinhardj » Sat Feb 24, 2018 10:50 am
TimS wrote:jb642DA wrote:Do you have to "replace" the engines at TBR??
I think if you are renting the plane out ie: flight school use, etc the answer is - YES.
If you are "just flying it yourself", I think TBR is a recommendation...They do not have to be replaced at TBR.
Do I have this right?
I did not look into flight/school/commercial aspects. And what I recall from leasing back my Cirrus a long time ago I do not have enough confidence in to repeat
For part 91, TBR is mostly a recommendation with the exception of the TDI 1.7 engines. In that case, you cannot go past the TBR. I forget exactly why, but it is a hard number and the FAA supposedly has come down hard on owners who "intentionally" went over. Further, Continental will not sell you parts passed the TBR on the 1.7L engines.
For the two liter engines; I have not seen it but have read of multiple going past TBR. Continental requires you sign a hold harmless letter and then they are willing to sell you parts.
Tim
According to the latest CD-135/155 manual, both engines have a
recommended TBO/TBR, not a strong airworthiness limit:
Extract from document TAE 125-0001 Rev. 19 Lifetime 170907 (latest version):
TAE 125-02-99 – Version 01 (see remarks for engine version
identification):
The entire aircraft engine TAE 125-02-99 has a proved TBR / TBO
of 1500 flight hours or 12 years, whichever occurs first. For
safety reasons it is strongly recommended to replace or overhaul
the entire aircraft engine after 1500 flight hours or after 12 years,
whichever occurs first.
Parts with a different life time are listed in the table under
“Remarks”.
TAE 125-02-99 – Version 02, or later approved Versions (see
remarks for engine version identification):
The entire aircraft engine TAE 125-02-99 has a proved TBR / TBO
of 2100 flight hours or 12 years, whichever occurs first. For
safety reasons it is strongly recommended to replace or overhaul
the entire aircraft engine after 2100 flight hours or after 12 years,
whichever occurs first.
Parts with a different life time are listed in the table under
“Remarks”.
Comparable statements cover the CD-155, Version 1: 1200h, Version 2: 2100h
Version 1 is with clutch, version 2 with flywheel, production after 1.December. 2015
Section 5 (Airworthiness Limitation) of the engine
Operation & Maintenance Manual CD-135 / CD-155 OM-02-02
says:
5 Airworthiness Limitations
AIRWORTHINESS LIMITATIONS APPROVAL SHEET (EASA)
This Airworthiness Limitations Section is EASA approved and
mandatory. It specifies required maintenance unless an alternative
program has been EASA approved.
AIRWORTHINESS LIMITATIONS APPROVAL SHEET (FAA)
The Airworthiness Limitations section is FAA approved and specifies
maintenance required under Sec. 43.16 and 91.403 of Title 14 of the
Code of Federal Regulations unless an alternative program has been
FAA approved.
5.1 Mandatory Maintenance Actions
The following maintenance actions are mandatory due to
airworthiness reasons. Any changes have to be approved by the
local airworthiness authority.
Section 5 does not contain any limitations of the complete engine, only of parts.
By the way, meanwhile the gearbox inspection interval has been increased to 1200h in some combinations with flywheel....
[quote="TimS"][quote="jb642DA"]Do you have to "replace" the engines at TBR??
I think if you are renting the plane out ie: flight school use, etc the answer is - YES.
If you are "just flying it yourself", I think TBR is a recommendation...They do not have to be replaced at TBR.
Do I have this right?[/quote]
I did not look into flight/school/commercial aspects. And what I recall from leasing back my Cirrus a long time ago I do not have enough confidence in to repeat :D
For part 91, TBR is mostly a recommendation with the exception of the TDI 1.7 engines. In that case, you cannot go past the TBR. I forget exactly why, but it is a hard number and the FAA supposedly has come down hard on owners who "intentionally" went over. Further, Continental will not sell you parts passed the TBR on the 1.7L engines.
For the two liter engines; I have not seen it but have read of multiple going past TBR. Continental requires you sign a hold harmless letter and then they are willing to sell you parts.
Tim[/quote]
According to the latest CD-135/155 manual, both engines have a [b]recommended TBO/TBR[/b], not a strong airworthiness limit:
Extract from document TAE 125-0001 Rev. 19 Lifetime 170907 (latest version):
[i]TAE 125-02-99 – Version 01 (see remarks for engine version
identification):
The entire aircraft engine TAE 125-02-99 has a proved TBR / TBO
of 1500 flight hours or 12 years, whichever occurs first. For
safety reasons it is strongly recommended to replace or overhaul
the entire aircraft engine after 1500 flight hours or after 12 years,
whichever occurs first.
Parts with a different life time are listed in the table under
“Remarks”.
TAE 125-02-99 – Version 02, or later approved Versions (see
remarks for engine version identification):
The entire aircraft engine TAE 125-02-99 has a proved TBR / TBO
of 2100 flight hours or 12 years, whichever occurs first. For
safety reasons it is strongly recommended to replace or overhaul
the entire aircraft engine after 2100 flight hours or after 12 years,
whichever occurs first.
Parts with a different life time are listed in the table under
“Remarks”. [/i]
Comparable statements cover the CD-155, Version 1: 1200h, Version 2: 2100h
Version 1 is with clutch, version 2 with flywheel, production after 1.December. 2015
Section 5 (Airworthiness Limitation) of the engine [i]Operation & Maintenance Manual CD-135 / CD-155 OM-02-02[/i]
says:
[i]
[b]5 Airworthiness Limitations[/b]
[b]AIRWORTHINESS LIMITATIONS APPROVAL SHEET (EASA)[/b]
This Airworthiness Limitations Section is EASA approved and
mandatory. It specifies required maintenance unless an alternative
program has been EASA approved.
[b]AIRWORTHINESS LIMITATIONS APPROVAL SHEET (FAA)[/b]
The Airworthiness Limitations section is FAA approved and specifies
maintenance required under Sec. 43.16 and 91.403 of Title 14 of the
Code of Federal Regulations unless an alternative program has been
FAA approved.
5.1 Mandatory Maintenance Actions
The following maintenance actions are mandatory due to
airworthiness reasons. Any changes have to be approved by the
local airworthiness authority.[/i]
Section 5 does not contain any limitations of the complete engine, only of parts.
By the way, meanwhile the gearbox inspection interval has been increased to 1200h in some combinations with flywheel....