AD 93-17-51
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
Loss of the horizontal stabilizer, which could severely affect controllability of the airplane.
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Required Actions
Perform a detailed visual inspection of the left and right horizontal stabilizer hinge fitting to verify installation of retention devices on the inner and outer hinge pins. If any part is missing, replace the outer pin, inner pin, and all associated retention devices on the affected side in accordance with Boeing 737 Maintenance Manual procedures. Submit a report of any discrepancies found within 24 hours after inspection completion.
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Compliance Time
Within 24 hours after the effective date of this AD (for line positions 2288-2347) or within 15 days after the effective date (for line positions 2348-2515).
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Affected Aircraft
BOEING Model 737-300, -400, and -500 Series airplanes, line positions 2288 through 2515 inclusive.
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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