AD 99-21-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 767-200 Series | Airworthiness Directives; BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300 Series | Airworthiness Directives; BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300F Series | Airworthiness Directives; BOEING Model 767 Series Airplanes |
Unsafe Condition
Engine thrust control cable failures could result in a severe asymmetric thrust condition during landing, and consequent reduced controllability of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct repetitive inspections every 18 months or 4,500 flight hours to detect discrepancies of the thrust control cable, fittings, and pulleys. Repair discrepancies as necessary. Replace non-metallic pulleys with aluminum pulleys part numbers 255T1232-1 or -3, and re-rig the thrust control cable for certain airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 767-200, 767-300, and 767-300F series airplanes powered by General Electric CF6-80A or Pratt & Whitney JT9D series engines without FADEC.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.