AD 90-14-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-81 (MD-81) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-81, -82, -83, and -87 Series, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-82 (MD-82) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-81, -82, -83, and -87 Series, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-83 (MD-83) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-81, -82, -83, and -87 Series, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-87 (MD-87) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-81, -82, -83, and -87 Series, and MD-88 Airplanes |
| aircraft | The Boeing Company | MD-88 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-81, -82, -83, and -87 Series, and MD-88 Airplanes |
Unsafe Condition
Loss of elevator control due to elevator control tab fittings with insufficient hardness (Webster pliers reading less than 10) which may fail prematurely.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct a visual inspection of the elevator control tab identification tag within 30 days after the AD's effective date. If the tag date is between Dec 30, 1989, and May 8, 1990, remove access doors and check fittings with Webster pliers. Replace fittings with readings below 10 before further flight. Use special flight permits if only one fitting is soft. Do not reuse failed fittings unless reheat-treated.
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, and before further flight if fittings are below specification.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Models DC-9-81, -82, -83, -87 series (MD-81, MD-82, MD-83, MD-87) and MD-88 airplanes delivered between Dec 30, 1989, and May 8, 1990.
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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