Airworthiness directives › 2022-12-09
AD 2022-12-09 Airworthiness Directives; British Aerospace (Operations) Limited and British Aerospace Regional Aircraft Airplanes
Models named: HP.137 Jetstream Mk.1, Jetstream Series 200, Jetstream Model 3101, Jetstream Model 3201. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to British Aerospace (Operations) Limited Model HP.137 Jetstream Mk.1, Jetstream Series 200, and Jetstream Model 3101 airplanes and British Aerospace Regional Aircraft Model Jetstream Model 3201 airplanes, all serial numbers, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within the compliance times listed in paragraph (g)(1)(i) or (ii) of this AD, as applicable, inspect the MLG for cracks by following Appendix 1, sections A through G, of British Aerospace Jetstream Series 3100 & 3200 Service Bulletin 32-JA960142, Revision 5, dated December 13, 2019; or the Accomplishment Instructions, sections A through D(6), in Héroux Devtek Service Bulletin 32-56, Revision 4, dated August 16, 2016. (i) For airplanes that have been inspected in accordance with AD 2017-15-06: Before the MLG accumulates 900 flight cycles since the last inspection or within 150 flight cycles after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 900 flight cycles. (ii) For airplanes that have not been inspected in accordance with AD 2017-15-06: Before the MLG accumulates 8,000 flight cycles since first installation on an airplane or within 50 flight cycles after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 900 flight cycles. (2) If any crack is found during any inspection required by paragraph (g)(1) of this AD, before further flight, replace the MLG with an airworthy MLG and continue the inspections as required by paragraph (g)(1) of this AD. (3) The compliance times in paragraphs (g)(1)(i) and (ii) of this AD are presented in flight cycles (landings). If the number of total flight cycles is unknown, for purposes of this AD, the number of flight cycles is the hours time-in-service (TIS) accumulated on the airplane multiplied by 0.75. For example: (i) 100 hours TIS × 0.75 = 75 flight cycles. (ii) 1,000 hours TIS × 0.75 = 750 flight cycles.
Unsafe condition
This AD was prompted by cracks found on the main landing gear (MLG) main fitting at the pintle to cylinder interface. The FAA is issuing this AD to detect and correct cracks in the MLG. The unsafe condition, if not addressed, could cause failure of the MLG, which could result in loss of control of the airplane during takeoffs and landings.
Affected ADs
This AD replaces AD 2017-15-06, Amendment 39-18966 (82 FR 34846, July 27, 2017) (AD 2017-15-06).
Read the original on the Federal Register →
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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