AD 85-03-06 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-100 Series | BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-200 Series | BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-200C Series | BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-300 Series | BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-400 Series | BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-500 Series | BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-600 Series | BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-700 Series | BOEING Model 737 Series Airplanes |
| aircraft | The Boeing Company | 737-800 Series | BOEING Model 737 Series Airplanes |
Unsafe Condition
Cracking of the wing-to-body drag angle could result in rapid decompression.
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Required Actions
Visually inspect upper drag angles for cracks per Boeing Service Bulletin 737-53-1031, Revision 3. Repeat inspections every 4,000 landings. Replace cracked parts with new aluminum parts or modify per Service Bulletin 737-53-1031, Revision 1. Modification per the Service Bulletin constitutes terminating action.
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Compliance Time
Prior to the accumulation of 8,000 landings on Group I airplanes, or 35,000 landings on Group II airplanes, or within 1 year or 4,000 landings from the effective date of this AD, whichever occurs later
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Affected Aircraft
Boeing Model 737 series airplanes certificated in all categories listed in Boeing Service Bulletin 737-53-1031, Revision 3, dated October 28, 1983.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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