Airworthiness directives › 2012-14-07
AD 2012-14-07 Airworthiness Directives; Bell Helicopter Textron Canada Helicopters
Applicability*9
This AD supersedes AD 2011-15-51, Amendment 39-16817 (76 FR 66609, October 27, 2011).
Compliance
(1) Before further flight, conduct a one-time visual inspection of the servo by doing the following: (i) Retract the boot depicted as 230 in Figure 1 to Paragraph (f) of this AD. ER19JY12.000 (ii) Applying only hand pressure, determine whether the nut, the shaft, or the clevis assembly, depicted as items 225, 215 and 205, respectively, in Figure 1 to Paragraph (f) of this AD, turn independently. If the shaft turns independently of the nut or clevis assembly, before further flight, replace the servo with an airworthy servo. (iii) If the shaft does not turn independently, inspect to determine if at least one tab of the lock washer is bent flush against a flat surface of the nut and if at least one tab of the lock washer is bent flush against a flat surface of the clevis assembly. (iv) If at least one lock washer tab is not aligned and bent flush with a nut flat surface and at least one lock washer tab is not aligned and bent flush with a flat surface of the clevis assembly, before further flight, replace the servo with an airworthy servo. (v) If any tab of the lock washer is not bent flush against either a flat surface of the nut or clevis assembly, bend the tab flush against a flat surface. (2) After accomplishing paragraphs (f)(1)(i) through (f)(1)(v), vibro-etch the letter “V” at the end of the part number on the data plate.
Required actions
(1) The Manager, Safety Management Group, FAA, may approve AMOCs for this AD. Send your proposal to: Matt Wilbanks, Aviation Safety Engineer, Regulations and Policy Group, Rotorcraft Directorate, FAA, 2601 Meacham Blvd., Fort Worth, Texas 76137; telephone (817) 222-5110; email matt.wilbanks@faa.gov . (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office before operating any aircraft complying with this AD through an AMOC.
Unsafe condition
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Affected ADs
This AD defines the unsafe condition as a loose or misaligned part in the servo that could lead to failure of the servo and subsequent loss of helicopter control.
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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