AD 94-4837
Published 1994-03-03 · 37 models · 2,610 US-registered tails affected · Federal Register
Airworthiness Directives; Teledyne Continental Motors Models C75, C85, C90, C125, C145, O-200, O-300, and GO-300 Series Reciprocating Engines Federal Register ↗
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to Teledyne Continental Motors (TCM) Models C75, C85, C90, C125, C145, O-200, O-300, and GO-300 series reciprocating engines, that requires inspection of the cylinder rocker shaft bosses for cracks, and inspection of the cylinder rocker shaft for looseness and replacement, if necessary, with a serviceable part. This amendment is prompted by reports of cracked or improperly repaired cylinder rocker shaft bosses. The actions specified by this AD are intended to prevent engine power loss and engine failure.
Applicability · by US fleet size
- PIPER PA-18 TCDS 1A2 478 tails
- CESSNA 172A TCDS 3A12 435 tails
- CHAMPION 7ECA TCDS A-759 418 tails
- LUSCOMBE 8E TCDS A-694 326 tails
- CHAMPION 7FC TCDS A-759 163 tails
- CHAMPION 7EC TCDS A-759 156 tails
- LUSCOMBE 8F TCDS A-694 118 tails
- MAULE M-5-210C TCDS 3A23 94 tails
- CESSNA 210C TCDS 3A21 58 tails
- FORNEY F-1 TCDS A-787 50 tails
- MAULE M-4-210C TCDS 3A23 46 tails
- MAULE M-4 TCDS 3A23 42 tails
- AMERICAN CHAMPION 7EC TCDS A-759 38 tails
- AMERICAN CHAMPION 7ECA TCDS A-759 38 tails
- LUSCOMBE T-8F TCDS A-694 25 tails
- CHAMPION 7CCM TCDS A-759 20 tails
- CHAMPION 7BCM TCDS A-759 19 tails
- PIPER PA-19 TCDS 1A2 15 tails
- MAULE M-4-210 TCDS 3A23 12 tails
- LUSCOMBE 8 TCDS A-694 11 tails
- FORNEY F-1A TCDS A-787 8 tails
- CHAMPION 7DC TCDS A-759 7 tails
- MAULE M-4C TCDS 3A23 6 tails
- CESSNA C-145 TCDS A-701 4 tails
- FORNEY E TCDS A-787 4 tails
- ERCO 415-D TCDS A-787 4 tails
- CHAMPION 7JC TCDS A-759 4 tails
- FORNEY 415-D TCDS A-787 2 tails
- LUSCOMBE AIRPLANE 4 TCDS TC 687 1 tails
- CHAMPION S7EC TCDS A-759 1 tails
- SWIFT 18 1 tails
- CHAMPION S7DC TCDS A-759 1 tails
- FORNEY G TCDS A-787 1 tails
- MAULE M-4T TCDS 3A23 1 tails
- MAULE M-4-210S TCDS 3A23 1 tails
- MAULE M-4S TCDS 3A23 1 tails
- UNIVAIR 415-D TCDS A-787 1 tails
Compliance instructions
Required actions, compliance times, parts/serial numbers and methods of compliance are in the Federal Register publication — not paraphrased here. Read AD on Federal Register ↗