Airworthiness Directive · Amendment 39-18966 · Landing gear
British Aerospace Regional Aircraft Airplanes
Superseded. A later AD replaced this one: AD 2022-12-09. Comply with the one in force.
This AD applies to British Aerospace Regional Aircraft Model HP.137 Jetstream Mk.1, Jetstream Series 200 and 3101, and Jetstream Model 3201 airplanes, all serial numbers, certificated in any category.
We are adopting a new airworthiness directive (AD) for British Aerospace Regional Aircraft Model HP.137 Jetstream Mk.1, Jetstream Series 200 and 3101, and Jetstream Model 3201 airplanes that would supersede AD 97-10-05. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as cracks in the main landing gear (MLG) fitting at the pintle to cylinder interface, which could cause failure of the MLG during takeoff and landing. We are issuing this AD to require actions to address the unsafe condition on these products.
Unless already done, do the following actions listed in paragraphs (f)(1) through (3) of this AD:
(1) Within the compliance times listed in paragraph (f)(1)(i) or (ii) of this AD, as applicable, inspect the MLG for cracks following Appendix 1 of British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32-JA960142, Revision No. 4, October 21, 2016; or Heroux Devtek Service Bulletin 32-56, Revision 4, dated August 16, 2016, as specified in British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32-JA960142, Revision No. 4, October 21, 2016.
(i) For airplanes that have been inspected following AD 97-10-05: Do the initial inspection within 1,200 flight cycles (FC) after the last inspection required by AD 97-10-05 and repetitively thereafter at intervals not to exceed 1,200 FC.
(ii) For airplanes that have not been inspected following AD 97-10-05: Do the initial inspection within 8,000 FC after installation of the MLG or within the next 100 FC after August 31, 2017 (the effective date of this AD), whichever occurs later, and repetitively thereafter at intervals not to exceed 1,200 FC.
(2) If any cracks are found during any of the inspections required in paragraph (f)(1) of this AD, before further flight, replace the MLG with an airworthy part following British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32-JA960142, Revision No. 4, October 21, 2016.
(3) The compliance times in paragraphs (f)(1)(i) and (ii) of this AD are presented in FC (landings). If the total FC have not been kept, multiply the total number of airplane hours time-in-service (TIS) by 0.75 to calculate the FC. For the purposes of this AD:
(i) 100 hours TIS ×.75 = 75 FC; and
(ii) 1,000 hours TIS ×.75 = 750 FC.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
