AD 2010-18-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Pratt & Whitney Canada (P&WC) PW530A, PW545A, and PW545B Turbofan Engines |
Unsafe Condition
Engine intercompressor bleed valve/servo valve malfunction causing engine surge, lack of response to Power Lever input, and crew commanded engine shutdown.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the BOV servo valve from service for engines with fewer than 50 hours TIS since new or overhaul on the effective date of this AD, as specified in Table 1. No further action is required for engines with 250 or more hours TIS since new or overhaul.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the defined compliance time specified in the AD.
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Affected Aircraft
Pratt & Whitney Canada (P&WC) PW530A, PW545A, and PW545B turbofan engines that incorporate either P&WC Service Bulletin (SB) PW500-72-30343 or PW500-72-30404, installed on, but not limited to, Cessna Aircraft Company model 550 (Citation Bravo) and model 560 (Citation Excel and XLS) airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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