AD 2003-14-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; Textron Lycoming Fuel Injected Reciprocating Engines |
| engine | Lycoming | Fuel Injected Reciprocating | Airworthiness Directives; Textron Lycoming Fuel Injected Reciprocating Engines |
Unsafe Condition
Rotary fuel pump leaks, which could result in an engine failure, engine fire, and damage to or loss of the aircraft.
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Required Actions
Perform initial and follow-up torque check inspections of pump relief valve attaching screws in accordance with Lycoming Service Bulletin No. 529B. Replace the affected fuel pump at or before the overhaul interval with a fuel pump having a new design valve housing.
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Compliance Time
Within 10 hours time-in-service (TIS) or 30 days after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Textron Lycoming IO-320, LIO-320, IO-360, HIO-360, TIO-360, LTIO-360, GO-435, GO-480, IGO-480-A1B6, IO-540, IGO-540, AEIO-540, HIO-540, TIO-540, LTIO-540, TIGO-541, IO-720, and TIO-720 reciprocating engines, with Crane/Lear Romec RG9080, RG9570, and RG17980 series 'AN' rotary fuel pumps listed in Table 1 installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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