AD 2001-11-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | DC-9-32 | Airworthiness Directives; McDonnell Douglas Model DC-9-32 Series Airplanes Modified Per Supplemental Type Certificate SA4371NM |
Unsafe Condition
Improper grounding of a water heater, coupled with an internal short in the water heater, could result in heat or smoke damage or a fire on the airplane.
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Required Actions
Perform a one-time general visual inspection to determine if ground wires are installed between the top of the water heater and the sink unit, and between the sink unit and the mounting flange of the toilet flush timer module on each lavatory. If any ground wire is not installed, install a ground wire assembly before further flight.
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Compliance Time
Within 18 months after the effective date of this AD.
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Affected Aircraft
McDonnell Douglas Model DC-9-32 series airplanes modified per Hexcel Supplemental Type Certificate (STC) SA4371NM, as listed in Hexcel Service Bulletin 110000-25-001, dated March 31, 2000.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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