AD 77-02-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | BOEING Model 727-100 and -200 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | BOEING Model 727-100 and -200 Series Airplanes |
Unsafe Condition
Fluctuations in airspeed and altitude information due to water being ingested and retained in the static port fittings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Enlarge the static port sensing holes from .047" dia. to .125" dia. in accordance with Boeing Service Bulletin 727-34-94 or later FAA approved service bulletins, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region.
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Compliance Time
within 3000 hours time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
Boeing Model 727-100 and -200 series airplanes certificated in all categories with .047" dia. static sensing holes
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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