AD 84-19-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental Motors | TSIO-520-BE | TELEDYNE CONTINENTAL Model TSIO-520-BE Engines |
Unsafe Condition
Possible failure of the engine driven fuel pump leading to loss of fuel pressure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the engine driven fuel pump assembly and replace with a serviceable pump. Modified pumps identified by a 'K' mark on the name plate or purple color on the high pressure aneroid housing may be reinstalled.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to further flight
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Affected Aircraft
Teledyne Continental Motors TSIO-520-BE engines with fuel pump assemblies part number 646571-1 and specific serial numbers listed in the AD.
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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