AD 2002-20-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737 | Airworthiness Directives; Boeing Model 737 Series Airplanes |
Unsafe Condition
The existing rudder control system design architecture is unsafe due to inherent failure modes, including single-jam modes and latent failures or jams, which, when combined with a second failure or jam, could cause an uncommanded rudder hardover event and consequent loss of control of the airplane. Additionally, the current rudder operational procedure is not effective throughout the entire flight envelope.
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Required Actions
Install a new rudder control system and make changes to the adjacent systems to accommodate the new system. Revise the FAA-approved Airplane Flight Manual procedures to address the identified unsafe conditions.
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Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 737 series airplanes, as specified in the existing ADs being superseded.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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