AD 2012-22-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Airplanes |
Unsafe Condition
Burnt/chafed wires within the alternating current contactor box (ACCB) due to inadequate clearance, which could affect the operation of the windshield heater, ice detector, angle of attack (AOA) vane heater, pilot probe heater, engine intake heater, or propeller de-icing system, and subsequently adversely affect the airplane's flight characteristics in icing conditions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for chafing, damage, and insulation damage within the ACCB and rework the wiring. If any chafing, damage, or insulation damage is found, replace the damaged wiring before further flight. Use the Accomplishment Instructions of the applicable Bombardier service bulletins specified in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 6,000 flight hours or 36 months after the effective date of this AD, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes, certificated in any category, serial numbers 4001 and subsequent.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.