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Airworthiness Directive

AD 69-09-03 R3 61 FR 21071 Active

Federal Aviation Administration · 14 CFR part 39

Prompted by inquiries concerning tachometer red arc restrictions on certain Textron Lycoming O-360 series reciprocating engines with solid crankshafts.

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FR document
96-11257
Amendment
39-9583
Published
1996-05-09
Effective
1996-06-13
Models covered
1

Last live check: 2026-08-19

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AD

69-09-03 R3

FR doc 96-11257 · 61 FR 21071

AD 69-09-03 R3Published 1996-05-09Effective 1996-06-13

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Prompted by inquiries concerning tachometer red arc restrictions on certain Textron Lycoming O-360 series reciprocating engines with solid crankshafts.

Full official abstract

This amendment revises an existing airworthiness directive (AD), applicable to Sensenich Propeller Manufacturing Company Inc. Models M76EMM, M76EMMS, 76EM8, and 76EM8S() metal propellers, that currently restricts operators from continuously operating the propeller at engine speeds from 2,150 to 2,350 revolutions per minute (RPM) and specifies propeller inspection and rework or replacement. This amendment eliminates the requirement to add tachometer markings on aircraft with certain additional Textron Lycoming O-360 series reciprocating engines with solid crankshafts installed, and updates the referenced Sensenich Propeller Company Inc. service bulletin to the latest revision. Reworking of all affected propeller models remains a requirement of the AD, regardless of engine installation. This amendment is prompted by inquiries concerning tachometer red arc restrictions on certain Textron Lycoming O-360 series reciprocating engines with solid crankshafts. The actions specified by this AD are intended to prevent propeller blade tip fatigue failure, which can result in loss of control of the aircraft.

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All Lycoming O-360 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index