AD 2013-17-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Airplanes |
| aircraft | Bell | Various | Airworthiness Directives; Bombardier, Inc. Airplanes |
Unsafe Condition
Erratic pitch movements and oscillatory behaviors of the elevator control system, caused by increased elevator breakout force from a new centering mechanism combined with existing bracket assembly backlash and bearing friction of the bellcrank support.
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Required Actions
Replace the bellcrank supports on the inner rear spar of the horizontal stabilizer with new, improved bellcrank supports, following Bombardier Service Bulletin 670BA-27-064. Repeat the replacement at intervals not exceeding 20,000 flight hours.
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Compliance Time
Varies based on total flight hours as of the effective date: before 24,600 hours, within 6,600 hours, before 30,000 hours, or within 1,500 hours after the effective date.
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Affected Aircraft
Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, serial numbers 10002-10999; Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15001-15990; Model CL-600-2E25 (Regional Jet Series 1000) airplanes, serial numbers 19001-19990.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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