AD 87-16-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | Airworthiness Directives; BOEING Model 747 Series Airplanes |
Unsafe Condition
Disbonding of the upper body tear straps in body section 46.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform an ultrasonic inspection of tear straps for disbonding within specified landing intervals based on line numbers. If unbonded areas exceed 60% between stringers, repair prior to further flight. Reinspect at intervals per specified figures or install solid fasteners as terminating action. Use blind fasteners with visual reinspection every 1,000 landings if used.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 250 landings after 09/13/1987 for line numbers 1-230, and within 750 landings after 09/13/1987 for line numbers 231-349.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747 series airplanes as listed in Boeing Alert Service Bulletin 747-53A2279 dated January 15, 1987.
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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