AD 98-16-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | MD-11 | Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes |
| aircraft | The Boeing Company | MD-11F | Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes |
Unsafe Condition
Wear on the nut assembly of the horizontal stabilizer actuator assembly due to a jackscrew surface finish manufactured out of design specification tolerance, which could result in excessive free play and a free-floating horizontal stabilizer, leading to loss of aircraft pitch control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for free play (wear on nut assembly) of the horizontal stabilizer actuator assembly using specified service bulletins. If wear is detected within certain limits, no further action is required. If beyond limits, replace the actuator assembly, repair the jackscrew assembly, or replace the nut assembly as per approved methods.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after the effective date of this AD (August 14, 1998).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas Model MD-11 series airplanes as listed in McDonnell Douglas MD-11 Alert Service Bulletin MD11-27A067, Revision 03, dated June 9, 1998.
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.