AD 59-09-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hartzell Propeller, Inc. | HC-82XG-1 | HARTZELL Models HC- 82-XG Series Propellers |
| aircraft | Hartzell Propeller, Inc. | HC-82XG-2 | HARTZELL Models HC- 82-XG Series Propellers |
| aircraft | Hartzell Propeller, Inc. | HC-82XG-6 | HARTZELL Models HC- 82-XG Series Propellers |
Unsafe Condition
3/8-inch mounting bolts have broken, allowing propeller separation from Lycoming 0-320 and some 0-340 engines.
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Required Actions
Inspect and torque mounting bolts to 30 foot-pounds before next 25 hours' operating time and at each 100-hour period until bolts are replaced. Replace 3/8-inch bolts with 7/16-inch bolts per Hartzell Bulletin No. 68 by January 1, 1961 or at next engine/propeller overhaul.
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Compliance Time
Before completing the next 25 hours' operating time and at or before each 100-hour operating period thereafter until item (2) is complied with. Item (2) must be completed by January 1, 1961 or at next engine/propeller overhaul.
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Affected Aircraft
Hartzell Propeller, Inc. models HC-82XG-1, HC-82XG-2, HC-82XG-6 installed on Lycoming 0-320 Series engines and some 0-340 Series engines.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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