Airworthiness directives › 2017-19-15
AD 2017-19-15 Airworthiness Directives; Technify Motors GmbH Reciprocating Engines
Makes named: technify. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Technify Motors GmbH TAE 125-02-99 (commercial designation CD-135, formerly Centurion 2.0) and TAE 125-02-114 (commercial designation CD-155, formerly Centurion 2.0S) reciprocating engines with a gearbox serial number (S/N) listed in Figure 1 to paragraph (c) of this AD. Figure 1 to Paragraph (c) of This AD—Gearbox S/Ns 00095 00107 00139 00160 00171 00172 00179 00189 00224 00327 00396 00432 00459 00481 00564 00688 00697 00884 00923 00957 01019 01048 01081 01082 01106 01125 01236 01237 01241 01245 01288 01311 01314 01351 01357 01361 01388 01418 01427 01487 01529 01534 01561 01598 01634 01655 01704 01711 01755 01762 01786 01844 01881 01883 01884 01887 01891 01893 01904 01928 01933 01935 01951 01977 01978 01986 02026 02040 02041 02127 02141 02167 02189 02228 02289 02298 02304 02314 02316 02354 02432
Compliance
(1) Comply with this AD within the compliance times specified, unless already done. (2) Within 55 flight hours after the effective date of this AD: (i) Replace the clutch with a dual mass flywheel. Use Technify Motors Service Bulletin (SB) No. SB TMG 125-1020 P1, Initial Issue, dated January 27, 2016, to do the replacement. (ii) Install a start phase monitoring system and software mapping in accordance with the requirements of FAA AD 2015-21-01 (80 FR 64314, October 23, 2015); and (iii) Inspect the rear radial shaft sealing ring on the gearbox for oil leakage in accordance with Figures 2 and 3 of Technify Motors SB No. SB TMG 125-1020 P1, Initial Issue, dated January 27, 2016. If an oil leak is detected, replace the gearbox with a part eligible for installation before the next flight.
Required actions
After the effective date of this AD: (1) Do not install an engine that is equipped with a clutch and has an affected gearbox listed in Figure 1 to paragraph (c) of this AD; (2) Do not install an affected gearbox on an engine unless it has passed the inspection required by paragraph (f)(2)(iii) of this AD; and (3) Do not install a clutch on an engine previously modified in accordance with the requirements of paragraph (f)(2) of this AD or already incorporating a dual mass flywheel.
Unsafe condition
This AD was prompted by a loss of engine power in flight caused by oil leaking from the gearbox radial shaft sealing ring that contaminated the clutch. We are issuing this AD to prevent failure of the clutch, loss of engine power in flight, and reduced control of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1