Airworthiness directives › 2016-26-04
AD 2016-26-04 Airworthiness Directives; Robinson Helicopter Company Helicopters
Makes named: robinson. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD becomes effective February 8, 2017.
Compliance
(1) The Manager, Los Angeles Aircraft Certification Office, FAA, may approve AMOCs for this AD. Send your proposal to: Eric Schrieber, Aviation Safety Engineer, Los Angeles Aircraft Certification Office, Transport Airplane Directorate, FAA, 3960 Paramount Blvd., Lakewood, California 90712; telephone (562) 627-5348; email 9-ANM-LAACO-AMOC-REQUESTS@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.
Required actions
Joint Aircraft Service Component (JASC) Code: 6210, Main Rotor Blades.
Unsafe condition
Within 100 hours time-in-service or at the next annual inspection, whichever occurs first: (1) Clean each MRB in the area depicted in Figure 1 of Robinson R44 Service Bulletin SB-89, dated March 30, 2015 (SB-89), or Robinson R66 Service Bulletin SB-13, dated March 30, 2015 (SB-13), as applicable to your model helicopter. (2) Using 10X or higher power magnification and a light, visually inspect the upper and lower MRB surfaces and trailing edge as depicted in Figure 1 of SB-89 or SB-13, whichever applies to your helicopter, for a crack, a nick, a scratch, a dent, or corrosion. If there is a crack, a nick, a scratch, a dent, or any corrosion, repair the MRB to an airworthy configuration if the damage is within the maximum repair damage limits or remove the MRB from service. (3) Alter the MRB in accordance with Compliance Procedure, paragraphs 4 through 19, of SB-89 or SB-13, as applicable to your model helicopter. Equivalent tubing may be used for R7769-1 and R7769-6 tubes. Power tools may not be used for this procedure.
Affected ADs
This AD defines the unsafe condition as a fatigue crack on an MRB. This condition could result in failure of an MRB and loss of helicopter control.
Read the original on the Federal Register →
You just looked this one up by hand
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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