AD 91-25-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; BOEING Model 737-300, 737-400, and 737-500 Series Airplanes |
| aircraft | The Boeing Company | 737-400 Series | Airworthiness Directives; BOEING Model 737-300, 737-400, and 737-500 Series Airplanes |
| aircraft | The Boeing Company | 737-500 Series | Airworthiness Directives; BOEING Model 737-300, 737-400, and 737-500 Series Airplanes |
Unsafe Condition
Separation of the thrust reverser translating sleeve due to worn auxiliary track liners and slider fittings could cause structural damage to the airplane.
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Required Actions
Within 14 days after the effective date, inspect each lower thrust reverser auxiliary track, liner, and slider fittings. Repeat inspections at intervals not exceeding 1,500 hours, 750 hours, or 250 hours time-in-service based on slider engagement. Replace track liners and slider fittings/auxiliary tracks if slider can be pulled out in both positions. Deactivate thrust reverser if slider can be pulled out only in deployed position. Record engagement and repeat inspections as specified.
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Compliance Time
Within 14 days after the effective date of this AD, and repeat inspections at intervals not to exceed 1,500 hours, 750 hours, or 250 hours time-in-service as specified.
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Affected Aircraft
BOEING Model 737-300, 737-400, and 737-500 series airplanes listed in Boeing Service Bulletin 737-78-1048, Revision 1.
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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