Airworthiness Directive · Amendment 39-15771 · Bombardier-Rotax GmbH 914 F Series Reciprocating Engines
Bombardier-Rotax GmbH 914 F Series Reciprocating Engines
This AD applies to Bombardier-Rotax GmbH 914 F series reciprocating engines with engine exhaust muffler, part number (P/N) 979402 or 979404, with serial numbers (SNs) listed in Table 1 of this AD, installed. These engines are installed on, but not limited to, Aeromot-Industria Mecanico Metalurgica, AMT-300 (Turbo Ximango Shark), Diamond Aircraft Industries, HK 36 TTS, HK 36 TTC, HK 36 TTC-ECO, and Stemme GmbH & Co. KG, S10-VT series powered sailplanes.
| Group | P/N | SN |
|---|---|---|
| (1) A | 979402 | 02.0001 through 02.0322, 03.0002, 03.0005, 03.0011, 03.0015, 03.0017, 03.0028, 03.0029, 03.0037, 03.0038, 03.0040, 03.0050, 03.0069, 03.0072, 03.0073, 03.0078, 03.0080 through 03.0086, 03.0088 through 03.0090, 03.0092 through 03.0101, 03.0103, and 03.0108. |
| (2) B | 979402 | 03.0001, 03.0003, 03.0004, 03.0006, 03.0007 through 03.0010, 03.0012 through 03.0014, 03.0016, 03.0018 through 03.0027, 03.0030 through 03.0036, 03.0039, 03.0041 through 03.0049, 03.0051 through 03.0068, 03.0070, 03.0071, 03.0074 through 03.0077, 03.0079, 03.0087, 03.0091, 03.0102, and 03.0104 through 03.0107. |
| 979404 | 03.0200 through 04.0799. |
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
For exhaust mufflers specified in Group A of Table 1 of this AD, within 50 hours of operation after the effective date of this AD, do the following:
(1) Perform a visual inspection around the fillet weld of the exhaust inlet flange and around the weld of the exhaust outlet for evidence of leakage or cracks. Information on inspecting the exhaust muffler can be found in Bombardier-Rotax GmbH 914 F Service Bulletin (SB) No. SB-914-028 R1, dated November 8, 2004.
(2) If you see evidence of an exhaust leak or cracks, replace the exhaust muffler.
For exhaust mufflers specified in Group B of Table 1 of this AD, within 50 hours of operation after the effective date of this AD, do the following:
(1) Perform a visual inspection around the weld of the exhaust outlet for evidence of leakage or cracks. Information on inspecting the exhaust muffler can be found in Bombardier-Rotax GmbH 914 F Service Bulletin No. SB-914-028 R1, dated November 8, 2004.
(2) If you see evidence of an exhaust leak or cracks, replace the exhaust muffler.
Within 50 hours of operation since the last inspection, perform the actions specified in paragraphs (f)(1) through (f)(2) and (g)(1) through (g)(2) of this AD.
(i) None.
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.
