Airworthiness directives › 2004-24-01
AD 2004-24-01 Airworthiness Directives; Bombardier Inc. Model (Otter) DHC-3 Airplanes
Applicability*9
(c) This AD affects the following airplane models and serial numbers that are certificated in any category: All Bombardier Inc. Model (Otter) DHC-3 airplanes incorporating 524085 BC, Ltd. Supplemental Type Certificate Number ST01243NY or SA01243NY.
Required actions
(e) To address this problem, you must do the following: Actions Compliance Procedures (1) Perform the following actions: (i) Remove the existing elevator sevo tab assembly, consisting of the following part numbers (P/N): C3TE13-12, VALTOC1136-2, and NAS40-2A-LT; (ii) Install the redesigned elevator servo tab assembly, P/N V3TE1137-1. Replace the elevator servo tab assembly within 300 hours time-in-service (TIS) after December 28, 2004 (the effective date of this AD) Follow Viking Air Ltd. Service Bulletin V3/01, dated March 6, 2002. (2) Balance the servo tab assembly to achieve a nose heavy static moment within the limits set by Viking Air Ltd. Service Bulletin V3/01, dated March 6, 2002 After installation of the redesigned servo tab assembly, balance prior to further flight Follow Viking Air Ltd. Service Bulletin V3/01, dated March 6, 2002. (3) Do not install any of the following part numbers as part of the servo tab assembly: (i) P/N C3TE13-12; (ii) P/N VALTOC1136-2; (iii) P/N NAS40-2A-LT. The part numbers should not be installed as of December 28, 2004 (the effective date of this AD) Not applicable.
Unsafe condition
(d) This AD is the result of one incident of structural failure of the elevator servo tab balance assembly. The actions specified in this AD are intended to prevent the structural failure of the elevator servo tab, which could lead to loss of control of the airplane.
Affected ADs
(b) 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