Airworthiness Directive · Amendment 39-15938 · Electric power
GROB-Werke Model G120A Airplanes
This AD applies to Model G120A airplanes, serial numbers 85001 through 85007 and 85026 through 85034, certificated in any category.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions.
(1) Before further flight after July 1, 2009 (the effective date of this AD), inspect the electrical cables for chafing and scorching marks in accordance with the accomplishment instructions of GROB Aircraft AG Service Bulletin No. MSB1121-108, dated March 18, 2009, or GROB Aircraft AG Service Bulletin No. MSB1121-108/1, dated April 27, 2009.
(2) If any chafe, burn, or scorch mark is found during the inspection required in paragraph (f)(1) of this AD, before further flight, replace the damaged cable(s) in accordance with the FAA Advisory Circular 43.13-1B Change 1, dated September 27, 2001, and install a protective cover on the attachment edge of the instrument panel combing in accordance with the accomplishment instructions of GROB Aircraft AG Service Bulletin No. MSB1121-108, dated March 18, 2009, or GROB Aircraft AG Service Bulletin No. MSB1121-108/1, dated April 27, 2009. You may get a copy of the FAA Advisory Circular on the Internet at http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/Frameset?OpenPage.
(3) If no chafe, burn, or scorch mark is found during the inspection required in paragraph (f)(1) of this AD, within the next 100 hours time-in-service (TIS) after July 1, 2009 (the effective date of this AD), install a protective cover on the attachment edge of the instrument panel combing in accordance with the accomplishment instructions of GROB Aircraft AG Service Bulletin No. MSB1121-108, dated March 18, 2009, or GROB Aircraft AG Service Bulletin No. MSB1121-108/1, dated April 27, 2009.
(4) Thereafter, at intervals not to exceed every 200 hours TIS, repeat the inspection of the electrical cables for chafing and scorching marks in accordance with the accomplishment instructions of GROB Aircraft AG Service Bulletin No. MSB1121-108/1, dated April 27, 2009.
Note: This AD differs from the MCAI and/or service information as follows: No differences.
