AD 97-23-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | Airworthiness Directives; Boeing Model 727-100 Series Airplanes |
Unsafe Condition
High-cycle fatigue cracking of engine fan blades due to vibration during thrust reverser applications could cause uncontained failure, resulting in loss of thrust and secondary damage to the airplane and/or fire.
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Required Actions
Revise the Airplane Flight Manual (AFM) Limitations Section by inserting Dee Howard AFM Supplement CR102-F-066, Change 19, to prohibit stabilized operation between 60 and 75 percent N1 speed during ground operations in reverse or forward thrust.
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Compliance Time
Within 72 hours after the effective date of this AD
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Affected Aircraft
Boeing Model 727-100 series airplanes modified with Supplemental Type Certificate SA8472SW, including Rolls-Royce Tay 651-54 engines.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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