Airworthiness directives › 2021-22-21
AD 2021-22-21 Airworthiness Directives; ASI Aviation (Type Certificate Previously Held by Reims Aviation S.A.) Airplanes
Models named: F406. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to ASI Aviation (type certificate previously held by Reims Aviation S.A.) Model F406 airplanes, all serial numbers, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 200 hours time-in-service (TIS) or within 12 months, whichever occurs first after the effective date of this AD, prepare the airplane and gain access in accordance with steps 1 through 7 of the Accomplishment Instructions in ASI Aviation Service Bulletin No. F406-62, Revision 01, dated December 14, 2018 (SB F406-62R1), and inspect each avionics bus CB switch part number (P/N) CM3589-50 to identify the date code. (1) If a CB switch does not have a date code, before further flight, remove the CB switch from service and install CB switch P/N 4061-2400-1 in accordance with steps 9 through 14 of the Accomplishment Instructions in SB F406-62R1. (2) If a CB switch has a date code earlier than 0434, before the CB switch exceeds 1,000 hours TIS since first installation on an airplane, remove the CB switch from service and install CB switch P/N 4061-2400-1 in accordance with steps 9 through 14 of the Accomplishment Instructions in SB F406-62R1. (3) If a CB switch has a date code 0434 or later, before the CB switch exceeds 6 years since first installation on an airplane or within 12 months after the effective date of this AD, whichever occurs later, remove the CB switch from service and install CB switch P/N 4061-2400-1 in accordance with steps 9 through 14 of the Accomplishment Instructions in SB F406-62R1.
Unsafe condition
This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as failure of a circuit breaker (CB) switch. The FAA is issuing this AD to prevent smoke and burning smell in the cockpit caused by failure of CB switches. The unsafe condition, if not addressed, could result in reduced controllability of the airplane.
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