AD 78-23-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-11 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
| aircraft | The Boeing Company | DC-9-12 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
| aircraft | The Boeing Company | DC-9-13 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
| aircraft | The Boeing Company | DC-9-14 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
| aircraft | The Boeing Company | DC-9-15 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
| aircraft | The Boeing Company | DC-9-15F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
| aircraft | The Boeing Company | DC-9-21 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
| aircraft | The Boeing Company | DC-9-31 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
| aircraft | The Boeing Company | DC-9-32 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
| aircraft | The Boeing Company | DC-9-32 (VC-9C) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-10, -20, -30, -40, -50 Series Airplanes, including military version |
Unsafe Condition
A false stall warning just after initiation of rotation could cause an unnecessary rejected takeoff.
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Required Actions
Modify the stall warning circuitry in accordance with McDonnell Douglas Service Bulletin 34-131 dated January 10, 1978. Equivalent modifications may be used if approved by the Chief, Aircraft Engineering Division, FAA Western Region.
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Compliance Time
within one year after the effective date of this AD
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Affected Aircraft
McDonnell Douglas DC-9-10, -20, -30, -40, -50 series airplanes, including military versions, all serial numbers
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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