AD 69-09-03 R3
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sensenich Propeller Manufacturing Company, Inc. | 76E Series | SENSENICH PROPELLER MANUFACTURING COMPANY INC. Models M76EMM, M76EMMS, 76EM8, and 76EM8S( ) Metal Propellers |
Unsafe Condition
Propeller blade tip fatigue failure, which can result in loss of control of the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Do not operate the engine in continuous operation between 2,150 and 2,350 RPM starting with the next flight after the effective date. Mark engine tachometer with a red arc from 2150 RPM to 2350 RPM within the next 25 hours time in service. Inspect and rework propellers with 500 or more total hours TIS or unknown TIS within 50 hours TIS after the effective date; remove non-compliant propellers. For propellers with less than 500 total hours TIS, inspect, rework, or replace prior to 550 total hours TIS; remove non-compliant propellers. Mark compliant propellers with suffix 'K'.
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Compliance Time
Required as indicated, unless accomplished previously.
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Affected Aircraft
Sensenich Propeller Manufacturing Company Inc. Models M76EMM, M76EMMS, 76EM8, and 76EM8S metal propellers, excluding those installed on solid crankshaft Textron Lycoming O-360 series engines with suffixes having a digit '4' or higher in the second position.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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