AD 76-12-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sabreliner Corporation | NA-265-70 | Airworthiness Directives; ROCKWELL INTERNATIONAL Model NA-265-70 and NA-265-80 Airplanes |
| aircraft | Sabreliner Corporation | NA-265-80 | Airworthiness Directives; ROCKWELL INTERNATIONAL Model NA-265-70 and NA-265-80 Airplanes |
Unsafe Condition
Inflight flutter due to an improper static balance of the rudder.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Notify flight crew of maximum operating limit speed of 250K/0.8M immediately. Within 10 hours' time in service, install placards and markings indicating the speed limit. Within 60 days, remove and measure the rudder's static unbalance; if exceeding 0 to 5 inch-lbs, adjust it within the limits via an approved modification.
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Compliance Time
Compliance required as indicated, unless already accomplished.
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Affected Aircraft
ROCKWELL INTERNATIONAL Model NA-265-70 airplanes, serial numbers 370-1 through 370-9, and Model NA-265-80 airplanes, serial numbers 380-1 through 380-42 and 380-44.
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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