2012-04-10: Wings

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): 2012-04-10 Burl A. Rogers (Type Certificate Previously Held by William Brad Mitchell and Aeronca, Inc.) Models 15AC and S15AC Airplanes: Amendment 39-16966; Docket No. FAA-2011-0318; Directorate Identifier 2010-CE-033-AD. (a) Effective Date This AD is effective April 17, 2012. (b) Affected ADs None. (c) Applicability This AD applies to Burl A. Rogers (type certificate previously held by William Brad Mitchell and Aeronca, Inc.) Model 15AC and S15AC airplanes, all serial numbers, that are certificated in any category. (d)Subject Joint Aircraft System Component (JASC)/Air Transport Association (ATA) of America Code 57, Wings. (e) Unsafe Condition This AD was prompted by reports of intergranular exfoliation and corrosion of the upper and/or lower wing main spar cap angles found on the affected airplanes. We are issuing this AD to detect and correct cracks and corrosion in the wing main spar cap angles, which could result in reduced strength of the wing spar and the load carrying capacity of the wing. This could lead to wing failure and consequent loss of control. (f) Actions, Compliance, and Procedures Comply with this AD within the compliance times specified, unless already done (does not eliminate the repetitive actions of this AD). [[Page 14684]] ------------------------------------------------------------------------ When must it be What must be done? done? How must it be done? ------------------------------------------------------------------------ (1) Inspect the exposed (i) Within the next Follow Burl's trailing edges of both the 25 hours time-in- Aircraft, LLC upper and lower main spar service (TIS) after Mandatory Service cap angles on both the left April 17, 2012 (the Bulletin No. 15AC06- and right wing for signs of effective date of 08-10, dated June cracks, intergranular this AD) or within 8, 2010; Burl's exfoliation, and corrosion. the next 6 months Aircraft, LLC after April 17, Mandatory Service 2012 (the effective Bulletin No. 15AC06- date of this AD), 08-10, Amendment A, whichever occurs dated June 23, first; or 2010; or Burl's (ii) If the left and/ Aircraft, LLC or right wing have Mandatory Service been repaired and Bulletin No. 15AC06- both the upper and 08-10, Amendment B, lower main spar dated June 23, caps have been 2010, Rev. replaced using new Original, September parts: Inspect at 15, 2011; and FAA or before the next Advisory Circular annual inspection (AC) 43.13-1B, that occurs 10 Change 1, Chapter years after the 6. AC 43.13-1B can replacement or be found at http:// within the next 100 rgl.faa.gov/. hours TIS after April 17, 2012 (the effective date of this AD), whichever occurs later. This compliance time applies separately to each wing. ------------------------------------------------------------------------ (2) After completing the (i) Within 12 months Follow Burl's inspection required in after April 17, Aircraft, LLC paragraph (f)(1) of this 2012 (the effective Mandatory Service AD, install new inspection date of this AD); Bulletin No. 15AC06- hole skin reinforcement or 08-10, dated June doublers and the associated (ii) If the left and/ 8, 2010, which screwcover plate in both or right wing have includes Burl's the left and right wing. been repaired and Aircraft, LLC both the upper and Drawing No. SB lower main spar 15AC06-08-10 (not caps have been dated); Burl's replaced using new Aircraft, LLC parts: At or before Mandatory Service the next annual Bulletin No. 15AC06- inspection that 08-10, Amendment A, occurs 10 years dated June 23, after the 2010; or Burl's replacement or Aircraft, LLC within the next 100 Mandatory Service hours TIS after Bulletin No. 15AC06- April 17, 2012 (the 08-10, Amendment B, effective date of dated June 23, this AD), whichever 2010, Rev. occurs later. This Original, September compliance time 15, 2011, which applies separately references Burl's to each wing. Aircraft, LLC Installation Instruction No. SB 15AC06-08-10, dated September9, 2011, Burl's Aircraft, LLC Sketch No. SB 15AC06-08-10, dated September 9, 2011, and Burl's Aircraft, LLC Drawing No. 2-1272 Splice, dated September 6, 2011; and FAA Advisory Circular (AC) 43.13- 1B, Change 1, Chapter 6. AC 43.13- 1B can be found at http://rgl.faa.gov/ . ------------------------------------------------------------------------ (3) After completing the Before further Follow Burl's inspection required in flight after Aircraft, LLC paragraph (f)(1) of this AD installing the Mandatory Service and installing the new inspection hole Bulletin No. 15AC06- inspection hole skin skin reinforcement 08-10, dated June reinforcement doublers in doublers as 8, 2010; Burl's the left and right wing as required in Aircraft, LLC required in paragraph paragraph (f)(2) of Mandatory Service (f)(2) of this AD, through this AD. Bulletin No. 15AC06- the inspection access 08-10, Amendment A, panels, inspect the leading dated June 23, and trailing edges of both 2010; or Burl's the upper and lower main Aircraft, LLC spar cap angles on both the Mandatory Service left and right wing for Bulletin No. 15AC06- signs of cracks, 08-10, Amendment B, intergranular exfoliation dated June 23, and corrosion. 2010, Rev. Original, September 15, 2011. ------------------------------------------------------------------------ (4) Remove any light Before further Follow Burl's corrosion found during the flight after the Aircraft, LLC inspection required in inspection required Mandatory Service paragraph (f)(3) of this AD in paragraph (f)(3) Bulletin No. 15AC06- and treat the entirety of of this AD. 08-10, dated June both the upper and lower 8, 2010; Burl's main spar cap angles on Aircraft, LLC both the left and right Mandatory Service wing with corrosion Bulletin No. 15AC06- inhibitor. 08-10, Amendment A, dated June 23, 2010; or Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06- 08-10, Amendment B, dated June 23, 2010, Rev. Original, September 15, 2011. ------------------------------------------------------------------------ (5) If cracks, intergranular Before further Follow Burl's exfoliation, or moderate or flight after the Aircraft, LLC severe corrosion is found inspection required Mandatory Service during theinspection in paragraphs Bulletin No. 15AC06- required in paragraphs (f)(1) and (f)(3) 08-10, dated June (f)(1) or (f)(3) of this of this AD. 8, 2010; Burl's AD, replace the affected Aircraft, LLC main spar cap angles in Mandatory Service their entirety as a single Bulletin No. 15AC06- piece. Splicing of the main 08-10, Amendment A, spar cap angles is not dated June 23, permitted. 2010; or Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06- 08-10, Amendment B, dated June 23, 2010, Rev. Original, September 15, 2011; and contact Burl's Aircraft, LLC in paragraph (i) of this AD for a replacement scheme and incorporate the replacement scheme. ------------------------------------------------------------------------ [[Page 14685]] (6) Removing the wing Repetitively Follow Burl's inspection access panels, thereafter at Aircraft, LLC repetitively inspect both intervals not to Mandatory Service the upper and lower forward exceed every 12 Bulletin No. 15AC06- main spar caps on both the months after the 08-10, dated June left and right wing for inspection required 8, 2010; Burl's signs of cracks, in paragraph (f)(3) Aircraft, LLC intergranular exfoliation, of this AD. Mandatory Service and corrosion. Bulletin No. 15AC06- 08-10, Amendment A, dated June 23, 2010; or Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06- 08-10, Amendment B, dated June 23, 2010, Rev. Original, September 15, 2011; and FAA Advisory Circular (AC) 43.13-1B, Change 1, Chapter 6. AC 43.13-1B can be found at http://rgl.faa.gov/. ------------------------------------------------------------------------ (7) After each inspection Before further Follow Burl's required in paragraph flight after each Aircraft, LLC (f)(6) of this AD, if only inspection required Mandatory Service light corrosion is found, in paragraph (f)(6) Bulletin No. 15AC06- remove the corrosion and of this AD. 08-10, dated June treat the main spar cap Continue with the 8, 2010; Burl's angles with corrosion repetitive Aircraft, LLC inhibitor. inspections Mandatory Service required in Bulletin No. 15AC06- paragraph (f)(6) of 08-10, Amendment A, this AD. dated June 23, 2010; or Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06- 08-10, Amendment B, dated June 23, 2010, Rev. Original, September 15, 2011; and FAA Advisory Circular(AC) 43.13-1B, Change 1, Chapter 6. AC 43.13-1B can be found at http://rgl.faa.gov/. Contact Burl's Aircraft, LLC in paragraph (i) of this AD for a replacement scheme and incorporate the replacement scheme. ------------------------------------------------------------------------ (8) After each inspection Before further Follow Burl's required in paragraph flight after each Aircraft, LLC (f)(6) of this AD, if inspection required Mandatory Service cracks, intergranular in paragraph (f)(6) Bulletin No. 15AC06- exfoliation, or moderate or of this AD. 08-10, dated June severe corrosion is found, Continue with the 8, 2010; Burl's replace the affected main repetitive Aircraft, LLC spar cap angles in their inspections Mandatory Service entirety as a single piece. required in Bulletin No. 15AC06- Splicing of the main spar paragraph (f)(6) of 08-10, Amendment A, cap angles is not permitted. this AD. dated June 23, 2010; or Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06- 08-10, Amendment B, dated June 23, 2010, Rev. Original, September 15, 2011; and FAA Advisory Circular (AC) 43.13-1B, Change 1, Chapter 6. AC 43.13-1B can be found at http://rgl.faa.gov/. Contact Burl's Aircraft, LLC in paragraph (i) of this AD for a replacement scheme and incorporate the replacement scheme. ------------------------------------------------------------------------ (9) Only install main spar As of April 17, 2012 Not applicable. cap angles that have been (the effective date inspected and are free of of this AD). cracks, intergranular exfoliation, or moderate or severe corrosion. ------------------------------------------------------------------------ (g) Alternative Methods of Compliance (AMOCs) (1) TheManager, Anchorage Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the ACO, send it to the attention of the person identified in the Related Information section of this AD. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. (h) Related Information For more information about this AD, contact August Asay, Supervisory Aerospace Engineer, FAA, Anchorage ACO, 222 W. 7th Ave., 14, Anchorage, Alaska 99513; telephone: (907) 271-2668; fax: (907) 271-6365; email: august.asay@faa.gov. (i) Material Incorporated by Reference (1) Youmust use the following service information to do the actions required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference (IBR) under 5 U.S.C. 552(a) and 1 CFR part 51. (i) Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06- 08-10, dated June 8, 2010; (ii) Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06- 08-10, Amendment A, dated June 23, 2010; (iii) Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06-08-10, Amendment B, dated June 23, 2010, Rev. Original, September 15, 2011; (iv) Burl's Aircraft, LLC Installation Instruction No. SB 15AC06-08-10, dated September 9, 2011; (v) Burl's Aircraft, LLC Drawing No. SB 15AC06-08-10 (not dated); (vi) Burl's Aircraft, LLC Sketch No. SB 15AC06-08-10, dated September 9, 2011; and (vii) Burl's Aircraft, LLC Drawing No. 2-1272 Splice, dated September 6, 2011; and (2) For service information identified in this AD, contact Burl's Aircraft, LLC, P.O. Box 671487, Chugiak, Alaska 99567-1487; telephone: (907) 688-3715; fax (907) 688-5031; email burl@biginalaska.com; Internet: http://www.burlac.com. (3) You may review copies of the service information at the FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, MO 64106. For information on the availability of this material at the FAA, call (816) 329-4148. (4) You may also review copies of the service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html. [[Page 14686]]