Airworthiness Directive · Amendment 39-16948 · Lycoming Engines Reciprocating Engines
Lycoming Engines Reciprocating Engines
This AD applies to all Lycoming Engines reciprocating engines with carburetor part numbers listed in Table 1 of this AD.
| 10-5219-XX | 10-5224-XX | 10-5230-XX | 10-5235-XX | 10-5253-XX |
| 10-5255-XX | 10-5283-XX | 10-6001-XX | 10-6019-XX | 10-6030-XX |
We are adopting a new airworthiness directive (AD) for certain Lycoming Engines reciprocating engines. This AD was prompted by a report of a "machined-from-billet" HA-6 carburetor having a loose mixture control sleeve that rotated in the carburetor body causing restriction of fuel and power loss. This AD requires removing certain "machined-from-billet" Volare LLC (formerly Precision Airmotive Corporation, formerly Facet Aerospace Products Company, formerly Marvel-Schebler (BorgWarner)) HA-6 carburetors, inspecting for a loose mixture control sleeve or for a sleeve that may become loose, repairing the carburetor, or replacing the carburetor with one eligible for installation. We are issuing this AD to prevent engine in-flight shutdown, power loss, and reduced control of the airplane.
Comply with this AD within 50 flight hours after the effective date of this AD, unless already done.
Inspect the carburetor to determine the type of body the carburetor has. Use Marvel-Schebler Emergency Service Bulletin (SB) No. SB-18, dated October 14, 2010, or Revision A, dated March 15, 2011, Figure (3) to determine which type of body is used.
(g) If the carburetor has a die-cast body, no further action is required.
(h) If the carburetor has an affected “machined-from-billet” body, remove the carburetor; and replace the carburetor with:
(1) An HA-6 carburetor not listed in Table 1 of this AD; or
(2) An HA-6 carburetor that is listed in Table 1 but is exempted as described in paragraphs 1.A. and 1.B of Marvel-Schebler Emergency SB No. SB-18, dated October 14, 2010 or Revision A, dated March 15, 2011; or that has already been repaired using that Emergency SB.
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.
Engines
