AD 2000-04-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737-100 | Airworthiness Directives; Boeing Model 737-100, -200, -300, -400, and -500 Series Airplanes |
Unsafe Condition
Reports of engine power loss caused by unsatisfactory performance of the fuel boost pumps.
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Required Actions
Repetitive testing of certain main tank fuel boost pumps to identify those with degraded performance, and replacement of degraded pumps with new or serviceable pumps. Eventually replace existing low pressure switches for boost pumps with higher threshold low pressure switches.
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Compliance Time
Before further flight for repetitive testing and replacement of degraded pumps. Replacement of low pressure switches is not time-limited but must be completed to terminate repetitive testing.
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Affected Aircraft
Boeing Model 737-100, -200, -300, -400, and -500 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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