AD 2006-10-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet | 45 | Airworthiness Directives; Learjet Model 45 Airplanes |
Unsafe Condition
Reports of tape found in the wing fuel tanks could block fuel passages and fuel pump screens, leading to the inability to transfer fuel between wing tanks, resulting in fuel imbalance and engine failure. Tape adhesive dissolving in the fuel could contaminate fuel pump screens, engine fuel controls, and fuel nozzles, causing potential erroneous readings of the fuel quantity indication system.
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Required Actions
Review airplane maintenance records to determine if inspections identified by IRNs O2810001 and O2820000 have been completed. If any IRN is missing, inspect the inside of the wet wing fuel areas and fuel pump screens for tape and adhesive residue, clean the low pressure fuel filter, inspect the filter for damage before installation, and take applicable corrective actions. Send the review and inspection results to the FAA.
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Compliance Time
Within 50 flight hours or 30 days after the effective date, whichever occurs first.
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Affected Aircraft
Learjet Model 45 airplanes, serial numbers 45-005 through 45-295 inclusive, and 45-2001 through 45-2044 inclusive, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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