Airworthiness Directive · Amendment 39-16726 · Lycoming Engines (Type Certificate Previously Held by Textron Lycoming) and Teledyne Continental Motors (TCM) Turbocharged Reciprocating Engines
Lycoming Engines (Type Certificate Previously Held by Textron Lycoming) and Teledyne Continental Motors (TCM) Turbocharged Reciprocating Engines
This AD applies to the Lycoming Engines and TCM turbocharged reciprocating engines listed in, but not limited to, Table 1 of this AD, with the following Hartzell Engine Technologies, LLC (HET) turbocharger models TA3601, TAO401, TAO402, TAO411, TAO413, T1879, T18A21, T18A44, THO867, and TEO659, installed:
(1) Newly manufactured turbochargers (otherwise known as the -0000 series) before serial number H-NJL00003, or rebuilt (otherwise known as the -9000 series) before serial number H-NJR00002; and
(2) With less than 50 hours time-in-service (TIS) on the effective date of this AD; and
(3) With a part number listed in Table 2 or Table 3 of this AD; and
(4) With a “slanted A” foundry mark located on the center housing and rotating assembly (CHRA).
| TSIO-520-BE. |
| TSIO-360-MB, SB. |
| TIO-540-AK1A. |
| L/TSIO-360-RB. |
| TIO-540-AE2A. |
| TSIO-360-H. |
| O-540-L3C5D. |
| TSIO-520-T. |
| L/TO-360-E1A6D. |
| TIO-540-AG1A. |
| TIO-540-AF1A. |
| TIO-540-AF1B. |
| TIO-540-AH1A. |
| TIO-541-E1D4. |
| TIO-541-E1C4. |
| TIGO-541-E. |
| GTSIO-520-F. |
| GTSIO-520-K. |
| GTSIO-520-D. |
| GTSIO-520-H. |
| 406990-9004 | 407540-0003 | 407540-9003 | 407800-9003 | 408590-9012 | 048610-0001 |
| 465292-0001 | 465292-9001 | 465292-0002 | 465292-9002 | 465292-0004 | 465292-9004 |
| 465398-9002 | 466011-0002 | 466011-9002 | 466304-0003 | 466304-9003 | 466642-0001 |
| 466642-0002 | 466642-9002 | 466642-0005 | 466642-9005 | 466642-0006 | 466642-0007 |
| 408610-9001 | 465398-0002 | 466642-9001 | N/A | N/A | N/A |
| 637374-1 | 633274-4 | 635034-2 | 642518-4 | 646677 | 649151-1 |
| 649151-2 | 46C19836 | 46C19839 | 46C22924 | C295001-0301 | C295001-0304 |
| LW-10191 | LW-13310 | LW-16254 | N/A | N/A | N/A |
(d) This AD does not require action for:
(1) Turbochargers with more than 50 hours TIS on the effective date of this AD.
(2) Turbochargers with a circled “JT” foundry mark on the CHRA.
(e) This AD does not apply to engines with new or overhauled turbochargers installed on or before September 2001.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires inspecting certain Lycoming and TCM reciprocating engines with certain Hartzell Engine Technologies, LLC (HET) turbochargers installed, and disassembly and cleaning of the turbocharger center housing and rotating assembly (CHRA) cavities of affected turbochargers. This AD was prompted by a turbocharger failure due to machining debris left in the cavities of the CHRA during manufacture. We are issuing this AD to prevent seizure of the turbocharger turbine, which could result in damage to the engine, and smoke in the airplane cabin.
Unless already done, disassemble, clean, and reassemble the turbochargers affected by this AD as follows:
(1) For affected turbochargers including overhauls, with between 0 and 10 hours TIS on the effective date of this AD, before further flight, disassemble the turbocharger, clean the CHRA center housing cavity, and reassemble the turbocharger.
(2) For affected turbochargers including overhauls, with more than 10 hours TIS but less than 50 hours TIS on the effective date of this AD, within the next 10 hours TIS, disassemble the turbocharger, clean the CHRA center housing cavity, and reassemble the turbocharger.
(3) Use paragraphs 1 through 10 of the CLEANING CHRA CENTER HOUSING section of Hartzell Engine Technologies, LLC SB No. 040, Revision A, dated December 22, 2010, to do the cleaning.
(4) The reference to Step 16 in paragraph 10 of the CLEANING CHRA CENTER HOUSING section of Hartzell Engine Technologies, LLC SB No. 040, Revision A, dated December 22, 2010, is incorrect. The correct reference is Step 9.
For turbochargers with more than 50 hours TIS on the effective date of this AD, no further action is required.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
