AD 89-23-52
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; BOEING Model 737-300 and -400 Series Airplanes |
| aircraft | The Boeing Company | 737-400 Series | Airworthiness Directives; BOEING Model 737-300 and -400 Series Airplanes |
Unsafe Condition
Loss of the forward entry door and subsequent rapid decompression of the airplane due to missing bolts attaching the inboard side of the door stop fitting to the fitting support intercostal.
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Required Actions
Incorporate a cabin pressure differential limitation of 4.7 psi into the AFM within 24 hours. Inspect the forward left entry door for missing bolts within 20 flights. Submit inspection reports within 10 days. Repair missing bolts prior to further flight if found missing.
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Compliance Time
Within 24 hours (clock hours, not flight hours) after the effective date for AFM limitation; within 20 flights after effective date for inspection; within 10 days after inspection for report submission. Alternate compliance may be approved.
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Affected Aircraft
BOEING Model 737-300 and -400 series airplanes, line numbers 1770 to 1783, 1785, and 1787 to 1789.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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