Lycoming Connecting Rods Ad

Clarified connecting rod bolt selection and installation instructions added new figure 1 revised part numbers in table 1 and added information from obsolete service.

Lycoming connecting rods ad.

Faa proposes emergency ad for lycoming rods if this is your first visit be sure to check out the faq by clicking the link above. We are issuing this ad to prevent connecting rod failure. After the effective date of. Whenever new connecting rods and or new connecting rod bolts are being installed.

The faa issued an ad requiring operators of lycoming engines to inspect and possibly replace off spec connecting rod small end bushings in engines overhauled between november 2015 and february 2017. Use of a connecting rod stamped with an s will ensure that the weight match between rods is always within the tolerance allowed by the lycoming specification for that particular part number. Related service information under 1 cfr part 51. Click the register link above to proceed.

On my o 320 rods the bearing notch on the connecting rod piece not the cap piece is on the same side as the cylinder number stamp. All supported lycoming reciprocating aircraft engines. If a piston is to be replaced it is strongly recommended that the power plant mechanic refer to lycoming service instruction no. The faa has issued an airworthiness directive ad for the connecting rods in certain models of lycoming engines and asked for comments on the ad 2017 16 11.

You may have to register before you can post. The msb describes procedures for inspecting connecting rods and replacing connecting rod small end bushings. Lycoming piston engines ad lyc 116 eci connecting rods 7 2006 tx applicability. 632b dated august 4 2017.

In late july as tens of thousands of ga aircraft owners were converging on oshkosh for airventure 2017 lycoming published mandatory service bulletin 632 titled identification of connecting rods with non conforming small end bushings this was a very nasty service bulletin affecting lycoming engines of all models that were built rebuilt overhauled or repaired during the past two years. Lycoming engines mandatory service bulletin msb no. Lycoming engin es formerly textron lycoming 360 and 540 series reciprocating.