AD 61-22-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | CL-44D4 | Airworthiness Directives; CANADAIR Model CL-44D4 Aircraft |
Unsafe Condition
Elevator hinge fittings may exhibit excessive movement at the upper and lower hinge bracket attachment points due to hole elongation, leading to elevator flutter during flight.
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Required Actions
Inspect elevator spar at Station 299 for fore and aft movement exceeding 0.010 inches at the hinge bracket attachments every 25 hours' time in service. Rework fittings P/N 28-A24498 A/B and P/N 28-A24670 by enlarging holes, replacing bolts with NAS 464-7-22 or equivalent, installing bushings meeting SAE 4130 specifications, and ensuring proper shimming and alignment. Line ream holes and make skin modifications per Canadair Drawing 28-22135 if needed.
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Compliance Time
Within the next 25 hours' time in service after the effective date of this AD, and every 25 hours' time in service thereafter.
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Affected Aircraft
Bombardier Inc. Model CL-44D4 aircraft, all serial numbers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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