AD 98-02-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes |
| aircraft | The Boeing Company | 737-400 Series | Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes |
| aircraft | The Boeing Company | 737-500 Series | Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes |
Unsafe Condition
Loose or missing fasteners on the left- or right-hand horizontal stabilizer could reduce the structural integrity of the horizontal stabilizer.
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Required Actions
Perform a one-time general visual inspection of the top and bottom of the leading edge skin where it attaches to the front spar of the horizontal stabilizer to detect missing fasteners. Perform a one-time detailed visual inspection of the elevator hinge plates attachment to the horizontal stabilizer rear spar fittings to detect loose or missing fasteners. If loose or missing fasteners are detected, install new or serviceable fasteners.
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Compliance Time
Within 5 flight cycles or 24 clock hours after the effective date of this AD, whichever occurs later
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Affected Aircraft
Boeing Model 737-300, -400, and -500 series airplanes having line positions 2765 through 2977 inclusive
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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