AD 51-07-01

final rule
Data completeness: 60%

Airworthiness Directives; All Navion Models Having Serial Numbers 1789 through 2019; 2021 through 2026; 2028 through 2142; 2144 through 2169; 2171 through 2177; and 2180

AD Number
51-07-01
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft Sierra Hotel Aero, Inc. Navion (Army L-17A) Airworthiness Directives; All Navion Models Having Serial Numbers 1789 through 2019; 2021 through 2026; 2028 through 2142; 2144 through 2169; 2171 through 2177; and 2180
aircraft Sierra Hotel Aero, Inc. Navion A (Army L-17B and L-17C) Airworthiness Directives; All Navion Models Having Serial Numbers 1789 through 2019; 2021 through 2026; 2028 through 2142; 2144 through 2169; 2171 through 2177; and 2180
aircraft Sierra Hotel Aero, Inc. Navion B Airworthiness Directives; All Navion Models Having Serial Numbers 1789 through 2019; 2021 through 2026; 2028 through 2142; 2144 through 2169; 2171 through 2177; and 2180

Unsafe Condition

Throttle housing slippage at the swaged joint between the cable housing and ferrule at the instrument panel end can result in erratic throttle operation.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Inspect controls for housing slippage by March 5, 1951, and replace any affected controls immediately. Install a special stop nut on the throttle shaft by July 15, 1951, to prevent inner shaft contact with the housing end.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

not later than March 5, 1951 for inspection and replacement; special stop nut must be installed by July 15, 1951

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Sierra Hotel Aero, Inc. Navion models with serial numbers 1789 through 2019; 2021 through 2026; 2028 through 2142; 2144 through 2169; 2171 through 2177; and 2180

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

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗ Find More ADs for Sierra Hotel Aero, Inc. Navion (Army L-17A)

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