AD 2016-07-09 Airworthiness Directives; BAE SYSTEMS (Operations) Limited Airplanes

Models named: 4101. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to all BAE SYSTEMS (Operations) Limited Model 4101 airplanes, certificated in any category.

Comply with this AD within the compliance times specified, unless already done.

This paragraph restates the requirements of paragraph (i) of AD 2011-21-06, with no changes. Within 90 days after November 23, 2011 (the effective date of AD 2011-21-06): Revise the maintenance program by incorporating Subjects 05-10-10, “Airworthiness Limitations”; 05-10-20, “Certification Maintenance Requirements”; and 05-10-30, “Critical Design Configuration Control Limitations (CDCCL)—Fuel System”; of Chapter 05, “Airworthiness Limitations,” of the BAE Systems (Operations) Limited Jetstream Series 4100 Aircraft Maintenance Manual (AMM), Revision 35, dated February 15, 2011. The initial compliance times for the tasks are at the applicable times specified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD. Doing the actions required by paragraph (i) of this AD terminates the requirements of this paragraph. (1) For replacement tasks of life limited parts specified in Subject 05-10-10, “Airworthiness Limitations,” of Chapter 05, “Airworthiness Limitations,” of the BAE Systems (Operations) Limited Jetstream Series 4100 AMM, Revision 35, dated February 15, 2011: Prior to the applicable flight cycles (landings) or flight hours (flying hours) on the part specified in the “Mandatory Life Limits” column in Subject 05-10-10, or within 90 days after November 23, 2011 (the effective date of AD 2011-21-06), whichever occurs later. (2) For structurally significant item tasks specified in Subject 05-10-10, “Airworthiness Limitations,” of Chapter 05, “Airworthiness Limitations,” of the BAE Systems (Operations) Limited Jetstream Series 4100 AMM, Revision 35, dated February 15, 2011: Prior to the accumulation of the applicable flight cycles specified in the “Initial Inspection” column in Subject 05-10-10, or within 90 days after November 23, 2011 (the effective date of AD 2011-21-06), whichever occurs later. (3) For certification maintenance requirements tasks specified in Subject 05-10-20, “Certification Maintenance Requirements,” of Chapter 05, “Airworthiness Limitations,” of the BAE Systems (Operations) Limited Jetstream Series 4100 AMM, Revision 35, dated February 15, 2011: Prior to the accumulation of the applicable flight hours specified in the “Time Between Checks” column in Subject 05-10-20, or within 90 days after November 23, 2011 (the effective date of AD 2011-21-06), whichever occurs later; except for tasks that specify “first flight of the day” in the “Time Between Checks” column in Subject 05-10-20, the initial compliance time is the first flight of the next day after doing the revision required by paragraph (g) of this AD, or within 90 days after November 23, 2011 (the effective date of AD 2011-21-06), whichever occurs later.

This AD was prompted by the need to reduce the life limit of certain main landing gear components, and to add certain post-repair inspections of critical structure to the maintenance or inspection program. We are issuing this AD to prevent failure of certain structurally significant items, including the main landing gear and nose landing gear, which could result in reduced structural integrity of the airplane; and to prevent fuel vapor ignition sources, which could result in a fuel tank explosion and consequent loss of the airplane.

This AD replaces AD 2011-21-06, Amendment 39-16829 (76 FR 64788, October 19, 2011) (“AD 2011-21-06”).