Airworthiness directives › 2022-08-11
AD 2022-08-11 Airworthiness Directives; Bell Textron Canada Limited Helicopters
Models named: 429. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Bell Textron Canada Limited Model 429 helicopters, certificated in any category, serial numbers 57001 through 57369 inclusive, 57371, and 57373.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 30 days after the effective date of this AD: Revise the Types of Operation—Limitations (section 1-3-A.) of the existing RFMS for your helicopter to include the information in the “Limitations” specified in figure 1 to paragraph (g) of this AD, revise the Configuration (section 1-5.) of the existing RFMS for your helicopter to include the information in the “Configuration” specified in figure 2 to paragraph (g) of this AD, and revise the Emergency and Malfunction Procedures (section 3) of the existing RFMS for your helicopter to include the information in the “CENTER DU FAILURE (RK CONFIGURATION)” specified in figure 3 to paragraph (g) of this AD. BILLING CODE 4910-13-P Figure 1 to paragraph (g)— Limitations revision ER22AP22.000 Figure 2 to paragraph (g)— Configuration revision ER22AP22.001 Figure 3 to paragraph (g)— Emergency and Malfunction Procedures revision ER22AP22.002 BILLING CODE 4910-13-C Note 1 to paragraph (g): The information in the “Limitations” specified in figure 1 to paragraph (g), “Configuration” specified in figure 2 to paragraph (g), and “CENTER DU FAILURE (RK CONFIGURATION)” specified in figure 3 to paragraph (g) of this AD can be found in Bell 429 Rotorcraft Flight Manual Supplement BHT-429-FMS-19, Revision 7, dated December 14, 2021.
Unsafe condition
This AD was prompted by in-service reports of the loss of display and subsequent recovery of certain display units (DUs). The FAA is issuing this AD to address a DU power cycle occurring during flight and consequent momentary loss of display information on the primary flight display and other DUs, which if not addressed, could result in the unexpected loss of display of important flight parameters to the pilots, including attitude, approach, airspeed, altitude, flight director information, navigation system cues, as well as engine and rotor drive system indications.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1